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  • 1.
    Backman, Max
    et al.
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    La Fleur, Linnea
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Kurppa, Pinja
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Djureinovic, Dijana
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Elfving, Hedvig
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Brunnström, Hans
    Division of Pathology, Lund University, Skåne University Hospital, Lund, Sweden.
    Mattsson, Johanna Sofia Margareta
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Pontén, Victor
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Eltahir, Mohamed
    Department of Pharmaceutical Bioscience, Uppsala University, Uppsala, Sweden.
    Mangsbo, Sara
    Department of Pharmaceutical Bioscience, Uppsala University, Uppsala, Sweden.
    Isaksson, Johan
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden; Dept. of Respiratory Medicine, Gävle Hospital, Gävle, Sweden..
    Jirström, Karin
    Division of Pathology, Lund University, Skåne University Hospital, Lund, Sweden.
    Kärre, Klas
    Department of Microbiology, Cell and Tumor Biology (MTC), Karolinska Institutet, Stockholm, Sweden..
    Carbone, Ennio
    Department of Microbiology, Cell and Tumor Biology (MTC), Karolinska Institutet, Stockholm, Sweden; Tumor Immunology and Immunopathology Laboratory, Dept. of Experimental and Clinical Medicine, University Magna Graecia of Catanzaro, Catanzaro, Italy..
    Leandersson, Karin
    Cancer Immunology, Dept. of Translational Medicine, Lund University, Skånes University Hospital, Malmö, Sweden.
    Mezheyeuski, Artur
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Pontén, Fredrik
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Lindskog, Cecilia
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Botling, Johan
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Micke, Patrick
    Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
    Extending the immune phenotypes of lung cancer: Oasis in the desertManuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    Introduction: Tumor infiltrating immune cells are key elements of the tumor microenvironment and mediate the anti-tumor effects of immunotherapy. The aim of the study was to characterize patterns of immune cell infiltration in non-small cell lung cancer (NSCLC) in relation to tumor mutations and clinicopathological parameters. 

    Methods: Lymphocytes (CD4+, CD8+, CD20+, FOXP3+, CD45RO+), macrophages (CD163+), plasma cells (CD138+), NK cells (NKp46+) and PD-L1+ were annotated on a tissue microarray including 357 operated NSCLC cases. Somatic mutations and tumor mutational burden were analyzed by targeted sequencing for 82 genes, and transcriptomic immune patterns were established in 197 patients based on RNAseq data. 

    Results: We identified somatic mutations (TP53, NF1, KEAP1, CSMD3, LRP1B) that correlated with specific immune cell infiltrates. Hierarchical clustering revealed four immune classes: with (1) high immune cell infiltration (“inflamed”), (2) low immune cell infiltration (“desert”), (3) a mixed phenotype, and (4) a new phenotype with an overall muted inflammatory cell pattern but with an imprint of NK and plasma cells. This latter class exhibited low expression of immune response-related genes (e.g. CXCL9, GZMB, INFG, TGFB1), but was linked to better survival and therefore designated “oasis”. Otherwise, the four immune classes were not related to the presence of specific mutations (EGFR, KRAS, TP53) or histologic subtypes. 

    Conclusion: We present a compartment-specific immune cell analysis in the context of the molecular and clinical background of NSCLC and identified the novel immune class “oasis”. The immune classification helps to better define the immunogenic potency of NSCLC in the era of immunotherapy. 

  • 2.
    Burman, Joachim
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Neurologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Fransson, Moa
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Tötterman, Thomas H.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Fagius, Jan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Neurologi.
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Loskog, Angelica S. I.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    T-cell responses after haematopoietic stem cell transplantation for aggressive relapsing-remitting multiple sclerosis2013Inngår i: Immunology, ISSN 0019-2805, E-ISSN 1365-2567, Vol. 140, nr 2, s. 211-219Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Autologous haematopoietic stem cell transplantation (HSCT) for relapsing-remitting multiple sclerosis is a potentially curative treatment, which can give rise to long-term disease remission. However, the mode of action is not yet fully understood. The aim of the study was to evaluate similarities and differences of the CD4(+) T-cell populations between HSCT-treated patients (n = 12) and healthy controls (n = 9). Phenotyping of memory T cells, regulatory T (Treg) cells and T helper type 1 (Th1) and type 17 (Th17) cells was performed. Further, T-cell reactivity to a tentative antigen, myelin oligodendrocyte glycoprotein, was investigated in these patient populations. Patients treated with natalizumab (n = 15) were included as a comparative group. White blood cells were analysed with flow cytometry and T-cell culture supernatants were analysed with magnetic bead panel immunoassays. HSCT-treated patients had similar levels of Treg cells and of Th1 and Th17 cells as healthy subjects, whereas natalizumab-treated patients had lower frequencies of Treg cells, and higher frequencies of Th1 and Th17 cells. Cells from HSCT-treated patients cultured with overlapping peptides from myelin oligodendrocyte glycoprotein produced more transforming growth factor-beta(1) than natalizumab-treated patients, which suggests a suppressive response. Conversely, T cells from natalizumab-treated patients cultured with those peptides produced more interleukin-17 (IL-17), IL-1 and IL-10, indicating a Th17 response. In conclusion, we demonstrate circumstantial evidence for the removal of autoreactive T-cell clones as well as development of tolerance after HSCT. These results parallel the long-term disease remission seen after HSCT.

  • 3.
    Burman, Joachim
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Neurologi.
    Svensson, Emma
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Fransson, Moa
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Loskog, Angelica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Tim-3 and PD-1: Regulators of adaptive immunity in multiple sclerosis2014Inngår i: Journal of Neuroimmunology, ISSN 0165-5728, E-ISSN 1872-8421, Vol. 275, nr 1-2, s. 141-141Artikkel i tidsskrift (Annet vitenskapelig)
  • 4.
    Burman, Joachim
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Neurologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Svensson, Emma
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Fransson, Moa
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Loskog, Angelica S I
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Zetterberg, Henrik
    Raininko, Raili
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för radiologi.
    Svenningsson, Anders
    Fagius, Jan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Neurologi.
    Mangsbo, Sara M
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    The cerebrospinal fluid cytokine signature of multiple sclerosis: A homogenous response that does not conform to the Th1/Th2/Th17 convention2014Inngår i: Journal of Neuroimmunology, ISSN 0165-5728, E-ISSN 1872-8421, Vol. 277, nr 1-2, s. 153-159Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this cross-sectional study, we wanted to identify key cytokines characteristic of different stages of multiple sclerosis (MS). To this end, cerebrospinal fluid from patients with MS was investigated with a multiplexed fluorescent bead-based immunoassay. In total 43 cytokines were assessed and related to clinical and imaging data. Increased levels of CCL22, CXCL10 and sCD40L characterized relapsing-remitting MS patients with the presence of gadolinium-enhancing lesions; decreased CCL2 and increased CXCL1 and CCL5 were typical of relapsing-remitting MS patients irrespectively of the presence of gadolinium-enhancing lesions. These homogenous patterns of cytokine activation do not conform to conventional Th1/Th2/Th17 responses.

  • 5.
    Christiansson, Lisa
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Mustjoki, Satu
    Simonsson, Bengt
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Hematologi.
    Olsson-Strömberg, Ulla
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Hematologi.
    Loskog, Angelica S.I.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    The use of multiplex platforms for absolute and relative protein quantification of clinical material2014Inngår i: EuPA Open Proteomics, ISSN 2212-9685, Vol. 3, s. 37-47Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    When introducing multiplex platforms to measure protein content in precious clinical material there is an increased risk of cross reactivity, loss of sensitivity as well as accuracy. In this paper, four multiplex platforms and one singleplex platform were compared by running pre- and post-treatment plasma samples from CML patients. We found a variation of absolute protein concentrations between platforms. For some of the analytes and platforms, relative differences between pre- and post-treatment samples correlated. We conclude that absolute concentrations measured by different platforms should be compared with caution and comparing relative differences could be more accurate.

  • 6.
    Ellmark, Peter
    et al.
    Alligator Biosci AB, S-22363 Lund, Sweden.;Lund Univ, Dept Immunotechnol, Lund, Sweden..
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Furebring, Christina
    Alligator Biosci AB, S-22363 Lund, Sweden..
    Norlén, Per
    Alligator Biosci AB, S-22363 Lund, Sweden..
    Tötterman, Thomas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Tumor-directed immunotherapy can generate tumor-specific T cell responses through localized co-stimulation2017Inngår i: Cancer Immunology and Immunotherapy, ISSN 0340-7004, E-ISSN 1432-0851, Vol. 66, nr 1, s. 1-7Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    The most important goals for the field of immuno-oncology are to improve the response rate and increase the number of tumor indications that respond to immunotherapy, without increasing adverse side effects. One approach to achieve these goals is to use tumor-directed immunotherapy, i.e., to focus the immune activation to the most relevant part of the immune system. This may improve anti-tumor efficacy as well as reduce immune-related adverse events. Tumor-directed immune activation can be achieved by local injections of immune modulators in the tumor area or by directing the immune modulator to the tumor using bispecific antibodies. In this review, we focus on therapies targeting checkpoint inhibitors and co-stimulatory receptors that can generate tumor-specific T cell responses through localized immune activation.

  • 7.
    Ellmark, Peter
    et al.
    Alligator Biosci AB, Lund, Sweden..
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala Univ, Dept Immunol Genet & Pathol, Uppsala, Sweden..
    Lindstedt, Malin
    Lund Univ, Dept Immunotechnol, Lund, Sweden..
    Selective Fc gamma R engagement by human agonistic anti-CD40 antibodies2016Inngår i: Translational Cancer Research, ISSN 2218-676X, Vol. 5, s. S839-S841Artikkel i tidsskrift (Fagfellevurdert)
  • 8.
    Eriksson, Emma
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Moreno, R
    Milenova, I. Yoanna
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Liljenfeldt, L
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Dieterich, L C
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Christiansson, Lisa
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Karlsson, H
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Ullenhag, Gustav
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Dimberg, Anna
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Vaskulärbiologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Alemany, R
    Loskog, Angelica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Activation of myeloid and endothelial cells by CD40L gene therapy supports T-cell expansion and migration into the tumor microenvironment2017Inngår i: Gene Therapy, ISSN 0969-7128, E-ISSN 1476-5462, Vol. 24, nr 2, s. 92-103Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    CD40 is an interesting target in cancer immunotherapy due to its ability to stimulate T-helper 1 immunity via maturation of dendritic cells and to drive M2 to M1 macrophage differentiation. Pancreatic cancer has a high M2 content that has shown responsive to anti-CD40 agonist therapy and CD40 may thus be a suitable target for immune activation in these patients. In this study, a novel oncolytic adenovirus armed with a trimerized membrane-bound extracellular CD40L (TMZ-CD40L) was evaluated as a treatment of pancreatic cancer. Further, the CD40L mechanisms of action were elucidated in cancer models. The results demonstrated that the virus transferring TMZ-CD40L had oncolytic capacity in pancreatic cancer cells and could control tumor progression. TMZ-CD40L was a potent stimulator of human myeloid cells and T-cell responses. Further, CD40L-mediated stimulation increased tumor-infiltrating T cells in vivo, which may be due to a direct activation of endothelial cells to upregulate receptors for lymphocyte attachment and transmigration. In conclusion, CD40L-mediated gene therapy is an interesting concept for the treatment of tumors with high levels of M2 macrophages, such as pancreatic cancer, and an oncolytic virus as carrier of CD40L may further boost tumor killing and immune activation.

  • 9.
    Fletcher, Erika A. K.
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab. Immuneed AB, Uppsala.
    Eltahir, Mohamed
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Lindqvist, Frida
    Immuneed AB, Uppsala.
    Rieth, Jonas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Törnqvist, Gunilla
    Immuneed AB, Uppsala.
    Leja-Jarblad, Justyna
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab. Immuneed AB, Uppsala.
    Mangsbo, Sara
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för farmaceutisk biovetenskap. Immuneed AB, Uppsala.
    Extracorporeal human whole blood in motion, as a tool to predict first-infusion reactions and mechanism-of-action of immunotherapeutics2018Inngår i: International Immunopharmacology, ISSN 1567-5769, E-ISSN 1878-1705, Vol. 54, s. 1-11Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    First infusion reactions along with severe anaphylactic responses can occur as a result of systemic administration of therapeutic antibodies. The underlying mechanisms by which monoclonal antibodies induce cytokine release syndrome (CRS) can involve direct agonistic effects via the drug target, or a combination of target-engagement along with innate receptor interactions. Despite the wide variety of pathways and cells that can play a role in CRS, many currently used assays are devoid of one or more components that must be present for these responses to occur. One assay that has not been assessed for its capacity to predict CRS is the modified Chandler loop model. Herein we evaluate a plethora of commercially available monoclonal antibodies to evaluate the modified Chandler loop model's potential in CRS prediction. We demonstrate that in a 4-hour loop assay, both the superagonistic antibodies, anti-CD3 (OKT3) and anti-CD28 (ANC28.1), display a clear cytokine response with a mixed adaptive/innate cytokine source. OKT3 induce TNFα and IFN-γ release in 20 out of 23 donors tested, whereas ANC28.1 induce TNF-α, IL-2 and IFN-γ release in all donors tested (n = 18–22). On the other hand, non-agonistic antibodies associated with no or low infusion reactions in the clinic, namely cetuximab and natalizumab, neither induce cytokine release nor cause false positive responses. A TGN1412-like antibody also display a clear cytokine release with an adaptive cytokine profile (IFN-γ and IL-2) and all donors (n = 9) induce a distinct IL-2 response. Additionally, the value of an intact complement system in the assay is highlighted by the possibility to dissect out the mechanism-of-action of alemtuzumab and rituximab. The loop assay can either complement lymph node-like assays or stand-alone to investigate drug/blood interactions during preclinical development, or for individual safety screening prior to first-in-man clinical trial.

  • 10.
    Fletcher, Erika
    et al.
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för farmaceutisk biovetenskap. Immuneed AB, S-75237 Uppsala, Sweden.
    van Maren, Wendy
    Leiden Univ, Med Ctr, Dept Immunohematol & Blood Transfus, NL-2300 RC Leiden, Netherlands.
    Cordfunke, Robert
    Leiden Univ, Med Ctr, Dept Immunohematol & Blood Transfus, NL-2300 RC Leiden, Netherlands.
    Dinkelaar, Jasper
    Leiden Univ, Leiden Inst Chem, Dept Bioorgan Synth, NL-2300 RA Leiden, Netherlands.
    Codee, Jeroen D. C.
    Leiden Univ, Leiden Inst Chem, Dept Bioorgan Synth, NL-2300 RA Leiden, Netherlands.
    van der Marel, Gijs
    Leiden Univ, Leiden Inst Chem, Dept Bioorgan Synth, NL-2300 RA Leiden, Netherlands.
    Melief, Cornelis J. M.
    Leiden Univ, Med Ctr, Dept Immunohematol & Blood Transfus, NL-2300 RC Leiden, Netherlands.
    Ossendorp, Ferry
    Leiden Univ, Med Ctr, Dept Immunohematol & Blood Transfus, NL-2300 RC Leiden, Netherlands.
    Drijfhout, Jan Wouter
    Leiden Univ, Med Ctr, Dept Immunohematol & Blood Transfus, NL-2300 RC Leiden, Netherlands.
    Mangsbo, Sara
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för farmaceutisk biovetenskap. Immuneed AB, S-75237 Uppsala, Sweden.
    Formation of Immune Complexes with a Tetanus-Derived B Cell Epitope Boosts Human T Cell Responses to Covalently Linked Peptides in an Ex Vivo Blood Loop System2018Inngår i: Journal of Immunology, ISSN 0022-1767, E-ISSN 1550-6606, Vol. 201, nr 1, s. 87-97Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Enhancing T cell responses against both viral and tumor Ags requires efficient costimulation and directed delivery of peptide Ags into APCs. Long peptide vaccines are considered favorable vaccine moieties from a clinical perspective, as they can harbor more than one immunogenic epitope enabling treatment of a broader target population. In addition, longer peptides are not extracellularly loaded on MHC class I; rather, they require intracellular processing and will thereby be presented to T cells mainly by professional APCs, thereby avoiding the risk of tolerance induction. The drawback of peptide vaccines regardless of peptide length is that naked peptides are not actively targeted to and taken up by APCs, and the standard nonconjugated adjuvant-peptide mixtures do not ensure cotargeting of the two to the same APC. We have identified a tetanus toxin-derived B cell epitope that can mediate the formation of immune complexes in the presence of circulating Abs. In this study, we show that these immune complexes improve both Ag uptake by APCs (blood monocytes and CD1c(+) dendritic cells) and consequently improve CD8(+) T cell recall responses in a human ex vivo blood loop system. The uptake of the peptide conjugate by blood monocytes is dependent on Abs and the complement component C1q. We envision that this strategy can be used to facilitate active uptake of Ags into APCs to improve T cell responses against pathogens or cancer.

  • 11.
    Ibarra, Cristian
    et al.
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden.
    Karlsson, Marie
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden.
    Codeluppi, Simone
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden;Karolinska Inst, Dept Physiol & Pharmacol, Stockholm, Sweden.
    Varas-Godoy, Manuel
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden;Univ Los Andes, Ctr Invest Biomed, Fac Med, Santiago, Chile.
    Zhang, Songbai
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden.
    Louhivuori, Lauri
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden.
    Mangsbo, Sara
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för farmaceutisk biovetenskap.
    Hosseini, Arad
    Karolinska Univ Hosp, Dept Mol Med & Surg, Stockholm, Sweden.
    Soltani, Navid
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden.
    Kaba, Rahim
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden.
    Lundgren, T. Kalle
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden.
    Hosseini, Abolfazl
    Karolinska Univ Hosp, Dept Mol Med & Surg, Stockholm, Sweden.
    Tanaka, Nobuyuki
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden;Keio Univ, Sch Med, Dept Urol, Tokyo, Japan.
    Oya, Mototsugu
    Keio Univ, Sch Med, Dept Urol, Tokyo, Japan.
    Wiklund, Peter
    Karolinska Univ Hosp, Dept Mol Med & Surg, Stockholm, Sweden.
    Miyakawa, Ayako
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden;Karolinska Univ Hosp, Dept Mol Med & Surg, Stockholm, Sweden.
    Uhlen, Per
    Karolinska Inst, Dept Med Biochem & Biophys, SE-17177 Stockholm, Sweden;Keio Univ, Grad Sch Med, Tokyo, Japan.
    BCG-induced cytokine release in bladder cancer cells is regulated by Ca2+ signaling2019Inngår i: Molecular Oncology, ISSN 1574-7891, E-ISSN 1878-0261, Vol. 13, nr 2, s. 202-211Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Bacillus Calmette-Guerin (BCG) is widely used in the clinic to effectively treat superficial urinary bladder cancer. However, a significant proportion of patients who fail to respond to BCG risk cystectomy or death. Though more than 3 million cancer treatments with BCG occur annually, surprisingly little is known about the initial signaling cascades activated by BCG. Here, we report that BCG induces a rapid intracellular Ca2+ (calcium ion) signal in bladder cancer cells that is essential for activating the transcription factor nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kappa B) and for synthesizing and secreting proinflammatory cytokines, including interleukin 8 (IL-8). A similar Ca2+ response was observed when cells were exposed to the supernatant of BCG. Studying cellular molecular mechanisms involved in the BCG signaling event, we found pivotal roles for phospholipase C and the Toll-like receptor 4. Further assessment revealed that this signaling pathway induces synthesis of IL-8, whereas exocytosis appeared to be controlled by global Ca2+ signaling. These results shed new light on the molecular mechanisms underlying BCG treatment of bladder cancer, which can help in improving therapeutic efficacy and reducing adverse side effects.

  • 12.
    Irenaeus, Sandra
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Schiza, Aglaia
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Wenthe, Jessica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Svensson, Emma
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Krause, Johan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Sundin, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Ahlström, Håkan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Tötterman, Thomas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Loskog, Angelica S.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Ullenhag, Gustav
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Local irradiation does not enhance the effect of immunostimulatory AdCD40L gene therapy combined with low dose cyclophosphamide in melanoma patients2017Inngår i: OncoTarget, ISSN 1949-2553, E-ISSN 1949-2553, Vol. 8, nr 45, s. 78573-78587Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: AdCD40L is an immunostimulatory gene therapy under evaluation for advanced melanoma, including ocular melanoma. Herein, we present the final data of a Phase I/IIa trial using AdCD40L alone or in combination with low dose cyclophosphamide +/- radiation therapy.

    Methods: AdCD40L is a replication-deficient adenovirus carrying the gene for CD40 ligand (CD40L). Twenty-four patients with advanced melanoma were enrolled and treated with AdCD40L monotherapy, or combined with cyclophosphamide +/- single fraction radiotherapy. The patients were monitored for 10 weeks using immunological and radiological evaluations and thereafter for survival.

    Results: AdCD40L treatment was safe and well tolerated both alone and in combination with cyclophosphamide as well as local radiotherapy. Four out of twenty-four patients had >1 year survival. Addition of cyclophosphamide was beneficial but adding radiotherapy did not further extend survival. High initial plasma levels of IL12 and MIP3b correlated to overall survival, whereas IL8 responses post-treatment correlated negatively with survival. Interestingly, antibody reactions to the virus correlated negatively with post IL6 and pre IL1b levels in blood.

    Conclusions: AdCD40L was safely administered to patients and effect was improved by cyclophosphamide but not by radiotherapy. Immune activation profile at baseline may predict responders better than shortly after treatment.

  • 13.
    Liljenfeldt, Lina
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Dieterich, Lothar C.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Dimberg, Anna
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Cancer och vaskulärbiologi.
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Loskog, Angelica S. I.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    CD40L gene therapy tilts the myeloid cell profile and promotes infiltration of activated T lymphocytes2014Inngår i: Cancer Gene Therapy, ISSN 0929-1903, E-ISSN 1476-5500, Vol. 21, nr 3, s. 95-102Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    CD40 ligand (CD40L) is a potent stimulator of tumor immunity via its activation of dendritic cells, which in turn initiate T-cell activation. However, T cells are inhibited by suppressive myeloid cells, which constitute an important part of immune evasion. We hypothesized that CD40L may revert the function of suppressive myeloid cells to generate a T-cell stimulatory environment, and this was investigated in the murine bladder cancer model MB49/C57BL/6. Upon intratumoral adenoviral CD40L (AdCD40L) gene therapy, the infiltration of CD11b(+)Gr-1(+) cells was significantly reduced, whereas activated T cells were increased. In vitro, CD40L-expressing MB49 cells tilted the myeloid subpopulations in favor of granulocytic CD11b(+)Gr-1(high) myeloid cells instead of monocytic CD11b(+)Gr-1(int/low) myeloid cells. Further, the level of macrophages in splenocyte co-cultures with MB49 cells was evaluated. In cultures with MB49 cells expressing CD40L, the overall level of macrophages was reduced and the remaining cells were differentiated into M1-like cells. Hence, these data support that CD40L tilts myeloid immune cell populations in favor of anti-tumor immunity (M1) instead of immunosuppression (CD11b(+)Gr-1(int/low) and M2), and this was accompanied by an increased level of activated T cells in the tumor tissue.

  • 14.
    Liljenfeldt, Lina
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Svensson, E.
    Huang, H.
    Dieterich, L.
    Ullenhag, Gustav
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för onkologi.
    Dimberg, A.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Loskog, Angelica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    AdCD40L immunostimulatory gene therapy shifts the MDSC- and macrophage profiles and promotes T cell infiltration in the tumor microenvironment2013Inngår i: Human Gene Therapy, ISSN 1043-0342, E-ISSN 1557-7422, Vol. 24, nr 12, s. A169-A169Artikkel i tidsskrift (Annet vitenskapelig)
  • 15.
    Liljenfeldt, Lina
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Yu, Di
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Chen, Liye
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Essand, Magnus
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    A Hexon and Fiber-modified Adenovirus Expressing CD40L Improves the Antigen Presentation Capacity of Dendritic Cells2014Inngår i: Journal of immunotherapy (1997), ISSN 1524-9557, E-ISSN 1537-4513, Vol. 37, nr 3, s. 155-162Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    CD40 ligand (CD40L), a strong stimulator of Th1 immune responses, acts via dendritic cells to trigger T-cell activation. AdCD40L therapy introduces the CD40L gene into the tumor microenvironment with an adenoviral vector and has shown promising results in experimental tumor models, dogs, and patients (phase I-II trials). The transduction efficiency of AdCD40L is dependent on the expression of CAR (coxsackie/adenovirus adhesion receptor), which is commonly downregulated on tumor cells. To enhance transduction efficiency, and therefore the therapeutic efficacy, a double-modified adenovirus was developed. The double-modified Ad5PTDf35(mCD40L) had a protein transduction domain (PTD) inserted into the hexon protein and the virus fiber is switched from serotype 5 to serotype 35. These modifications enable transduction of a wider range of cell types. In comparison with Ad5(mCD40L), Ad5PTDf35(mCD40L) showed increased transduction capacity on a variety of murine cells. Furthermore, antigen presentation was improved after transduction with Ad5PTDf35(mCD40L). This was demonstrated in an antigen presentation assay, both in vitro and in vivo, in which transduced dendritic cells were loaded with suboptimal concentrations of the human gp100 peptide and allowed to interact with gp100-specific transgenic T cells (pmel). Finally, Ad5PTDf35(mCD40L) could delay tumor growth in a murine cancer model at a particle load, wherein therapeutic efficacy of the Ad5(mCD40L) vector was lost. Hence, the Ad5PTDf35(CD40L) vector holds great promise as a second-generation immune stimulatory therapy, as it not only targets tumor cells but also antigen-presenting cells that are, among other cells, present in the tumor microenvironment.

  • 16.
    Lindqvist, Camilla
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Christiansson, Lisa
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Thörn, Ingrid
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Molekylär och morfologisk patologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Paul-Wetterberg, Gabriella
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Sundström, Christer
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Molekylär och morfologisk patologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Tötterman, Thomas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Simonsson, Bengt
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Medicin. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Hematologi.
    Enblad, Gunilla
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för onkologi.
    Frisk, Per
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för onkologi.
    Olsson Strömberg, Ulla
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Medicin. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Hematologi.
    Loskog, Angelica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Both CD4(+) FoxP3(+) and CD4(+) FoxP3(-) T cells from patients with B-cell malignancy express cytolytic markers and kill autologous leukaemic B cells in vitro.2011Inngår i: Immunology, ISSN 0019-2805, E-ISSN 1365-2567, Vol. 133, nr 3, s. 296-306Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    P>Cytotoxic CD4+ T cells have been found in patients with chronic lymphocytic leukaemia (CLL) and seem to be involved in the regulation of malignant B cells. The CD4+ T regulatory cells (Tregs) can regulate various immune cells, including B cells, by inducing their apoptosis. Hence, different subgroups of CD4+ T cells may be involved in the regulation of malignant B cells. In this study, the cytotoxic phenotype and function of various CD4+ T-cell subgroups were investigated in patients with B-cell malignancies. Peripheral blood was collected from patients with CLL, various B-cell lymphomas, healthy adult donors, children with precursor B-cell acute lymphoblastic leukaemia (pre-B ALL) and from healthy children. CD4+ T cells (CD3+ CD4+ FoxP3-), Tregs (CD3+ CD4+ CD127low FoxP3+) and CD127high FoxP3+ T cells (CD3+ CD4+ CD127high FoxP3+) were analysed for their expression of the cytolytic markers CD107a and Fas ligand. Patients with CLL had increased CD107a expression on all tested T-cell subgroups compared with healthy donors. Similar results were found in patients with B-cell lymphomas whereas the CD107a expression in children with pre-B ALL was no different from that in healthy controls. Fas ligand expression was similar between patient cells and cells of healthy donors. CD4+ T cells and Tregs from patients with CLL and healthy donors were subsequently purified and cultured in vitro with autologous B cells. Both subgroups lysed B cells and killing was confirmed by granzyme ELISAs. In conclusion, cytotoxic populations of CD4+ T cells, including Tregs, are present in patients with B-cell malignancy and may be an important factor in immune-related disease control.

  • 17.
    Loskog, Angelica
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Maleka, Aglaia
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för onkologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Svensson, Emma
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Krause, Johan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för radiologi.
    Agnarsdottir, Margret
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Ahlström, Håkan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för radiologi.
    Tötterman, Thomas H.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Ullenhag, Gustav
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för onkologi.
    AdCD40L Immunostimulatory Gene Therapy in Combination with Cyclophosphamide Prolongs 6-Months Survival in a Phase I/II Trial for Malignant Melanoma2014Inngår i: Molecular Therapy, ISSN 1525-0016, E-ISSN 1525-0024, Vol. 22, s. S247-S247Artikkel i tidsskrift (Annet vitenskapelig)
  • 18.
    Loskog, Angelica
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Maleka, Aglaia
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Svensson, Emma
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för organismbiologi, Evolution och utvecklingsbiologi.
    Lundberg, Christina
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Nilsson, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Krause, Johan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Agnarsdóttir, Margrét
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Sundin, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Ahlström, Håkan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Tötterman, Thomas H
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Ullenhag, Gustav
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi.
    Immunostimulatory AdCD40L gene therapy combined with low-dose cyclophosphamide in metastatic melanoma patients2016Inngår i: British Journal of Cancer, ISSN 0007-0920, E-ISSN 1532-1827, Vol. 114, nr 8, s. 872-880Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    BACKGROUND: Current approaches for treating metastatic malignant melanoma (MM) are not effective enough and are associated with serious adverse events. Due to its immunogenicity, melanoma is an attractive target for immunostimulating therapy. In this phase I/IIa study, local AdCD40L immunostimulatory gene therapy was evaluated in patients with MM.

    METHODS: AdCD40L is an adenovirus carrying the gene for CD40 ligand. Patients that failed standard treatments were enrolled. Six patients received four weekly intratumoral AdCD40L injections. Next, nine patients received low-dose cyclophosphamide conditioning before the first and fourth AdCD40L injection. The blood samples were collected at multiple time points for chemistry, haematology and immunology evaluations. Radiology was performed at enrolment and repeated twice after the treatment.

    RESULTS: AdCD40L was safe with mild transient reactions. No objective responses were recorded by MRI, however, local and distant responses were seen on FDG-PET. The overall survival at 6 months was significantly better when cyclophosphamide was added to AdCD40L. The patients with the best survival developed the highest levels of activated T cells and experienced a pronounced decrease of intratumoral IL8.

    CONCLUSIONS: AdCD40L therapy for MM was well tolerated. Local and distant responses along with better survival in the low-dose cyclophosphamide group are encouraging.

  • 19. Lund, T.
    et al.
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Scholz, H.
    Gjorstrup, P.
    Tötterman, Thomas H.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Korsgren, Olle
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Foss, A.
    Resolvin E1 Reduces Proinflammatory Markers in Human Pancreatic Islets in vitro2010Inngår i: Experimental and clinical endocrinology & diabetes, ISSN 0947-7349, E-ISSN 1439-3646, Vol. 118, nr 4, s. 237-244Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In clinical islet transplantation, inflammatory responses initiated by the transplanted islets and by the host immune system cause acute and chronic graft loss. The resolution of acute inflammation is an active process mediated by specific signals and mediators such as resolvin E1 (RvE1). We investigated the effect of RvE1 on i) the inflammatory status of human pancreatic islets, ii) islet viability and apoptosis, and iii) the instant blood-mediated inflammatory reaction (IBMIR) in vitro. Pro-inflammatory cytokines and tissue factor (TF) in isolated human islets were determined by real-time RT-qPCR (mRNA levels), CBA and Gyrolab bioaffy (protein levels) after lipopolysaccaride (LPS) stimulation. Islet viability was measured using insulin secretion in a dynamic model, ADP/ATP ratio and total ATP content. Apoptosis was measured using commercial kits after stimulation with proinflammatory cytokines. To assess effect on IBMIR, human islets were mixed with non-anticoagulated, RvE1 or vehicle pretreated ABO-compatible blood in heparin-coated tubing loops. Treatment of human islets with RvE1 (500nM) for 24 h reduced LPS-induced increase in mRNA and protein levels of selected pro-inflammatory markers (IL-8, MCP-1, and TF). RvE1 lowered the ADP/ATP ratio, but had no effect on insulin secretion. RvE1 reduced the apoptotic effect of proinflammatory cytokines. Additionally, RvE1 reduced platelet consumption and TAT complex formation during the first 5 min after islet-blood contact. RvE1 suppresses proinflammatory markers and lowers the ADP/ATP ratio in human islets in vitro. RvE1 demonstrates antiapoptotic effects in a proinflammatory milieu. Additionally, RvE1 has modest dampening effects on IBMIR. We conclude that RvE1 may have potential in clinical islet transplantation.

  • 20.
    Mangsbo, Sara
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för farmaceutisk biovetenskap. Uppsala universitet, Science for Life Laboratory, SciLifeLab. Immuneed AB, Uppsala, Sweden.
    Fletcher, Erika
    Uppsala universitet, Science for Life Laboratory, SciLifeLab. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för farmaceutisk biovetenskap.
    van Maren, Wendy
    Department of Immunohematology & Blood Transfusion, Leiden University Medical Center, Leiden.
    Redeker, Anke
    Department of Immunohematology & Blood Transfusion, Leiden University Medical Center, Leiden.
    Cordfunke, Robert
    Department of Immunohematology & Blood Transfusion, Leiden University Medical Center, Leiden.
    Dillmann, Inken
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi. Uppsala universitet, Science for Life Laboratory, SciLifeLab.
    Dinkelaar, Jasper
    Department of Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Leiden.
    Ouchaou, Kahina
    Department of Immunohematology & Blood Transfusion, Leiden University Medical Center, Leiden.
    Codee, Jeroen
    Department of Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Leiden.
    van der Marel, Gijs
    Department of Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Leiden.
    Hoogerhout, Peter
    Institute for Translational Vaccinology Intravacc, Bilthoven, The Netherlands.
    Melief, Cornelis
    Department of Immunohematology & Blood Transfusion, Leiden University Medical Center, Leiden.
    Ossendorp, Ferry
    Department of Immunohematology & Blood Transfusion, Leiden University Medical Center, Leiden.
    Drijfhout, Jan Wouter
    Department of Immunohematology & Blood Transfusion, Leiden University Medical Center, Leiden.
    Linking T cell epitopes to a common linear B cell epitope: A targeting and adjuvant strategy to improve T cell responses2018Inngår i: Molecular Immunology, ISSN 0161-5890, E-ISSN 1872-9142, Vol. 93, s. 115-124Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Immune complexes are potent mediators of cellular immunity and have been extensively studied for their disease mediating properties in humans and for their role in anti-cancer immunity. However, a viable approach to use antibody-complexed antigen as vehicle for specific immunotherapy has not yet reached clinical use. Since virtually all people have endogenous antibodies against tetanus toxoid (TTd), such commonly occurring antibodies are promising candidates to utilize for immune modulation. As an initial proof-of-concept we investigated if anti tetanus IgG could induce potent cross-presentation of a conjugate with SIINFEKL, a MHC class I presented epitope of ovalbumin (OVA), to TTd. This protein conjugate enhanced OVA-specific CD8 + T cell responses when administrated to seropositive mice. Since TTd is poorly defined, we next investigated whether a synthetic peptide peptide conjugate, with a chemically defined linear B cell epitope of tetanus toxin (TTx) origin, could improve cellular immune responses. Herein we identify one linear B cell epitope, here after named MTTE thru a screening of overlapping peptides from the alpha and beta region of TTx, and by assessment of the binding of pooled IgG, or individual human IgG from high-titer TTd vaccinated donors, to these peptides. Subsequently, we developed a chemical protocol to synthesize defined conjugates containing multiple copies of MITE covalently attached to one or more T cell epitopes of choice. To demonstrate the potential of the above approach we showed that immune complexes of anti-MITE antibodies with KM-containing conjugates are able to induce DC and T cell activation using model antigens.

  • 21.
    Mangsbo, Sara M
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Broos, Sissela
    Fletcher, Erika
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Veitonmäki, Niina
    Furebring, Christina
    Dahlén, Eva
    Norlén, Per
    Lindstedt, Malin
    Tötterman, Thomas H
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Ellmark, Peter
    The human agonistic CD40 antibody ADC-1013 eradicates bladder tumors and generates T cell dependent tumor immunity2015Inngår i: Clinical Cancer Research, ISSN 1078-0432, E-ISSN 1557-3265, Vol. 21, nr 5, s. 1115-1126Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose: Local administration of immune-activating antibodies may increase the efficacy and reduce the immune-related adverse events associated with systemic immunotherapy of cancer. Here we report the development and affinity maturation of a fully human agonistic CD40 antibody (IgG1), ADC-1013. Experimental Design: We have used molecular engineering to generate an agonistic antibody with high affinity for CD40. The functional activity of ADC-1013 has been investigated in human and murine in vitro models. The in vivo effect has been investigated in two separate bladder cancer models, both using human xenograft tumors in immune deficient NSG mice and using a syngeneic bladder cancer model in a novel human CD40 transgenic mouse. Results: Activation of dendritic cells (DCs) by ADC-1013 results in up-regulation of the co-stimulatory molecules CD80 and CD86, and secretion of IL-12. ADC-1013 also activates dendritic cells from human CD40 transgenic mice, and peptide-pulsed and ADC-1013-stimulated dendritic cells induce antigen-specific T cell proliferation in vitro. In vivo, treatment with ADC-1013 in a syngeneic bladder cancer model, negative for hCD40, induces significant anti-tumor effects and long-term tumor-specific immunity. Further, ADC-1013 demonstrates significant anti-tumor effects in a human bladder cancer transplanted into immunodeficient NSG mice. Conclusions: Our data demonstrate that ADC-1013 induces long-lasting anti-tumor responses and immunological memory mediated by CD40 stimulation. To the best of our knowledge, ADC-1013 represents the first immunomodulatory antibody developed for local immunotherapy of cancer.

  • 22.
    Mangsbo, Sara M
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Ninalga, Christina
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Essand, Magnus
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Loskog, Angelica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Tötterman, Thomas H
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    CpG Therapy is Superior to BCG in an Orthotopic Bladder Cancer Model and Generates CD4+ T-cell Immunity2008Inngår i: Journal of immunotherapy (1997), ISSN 1524-9557, E-ISSN 1537-4513, Vol. 31, nr 1, s. 34-42Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Bacillus Calmette Guérin (BCG) immunotherapy has been successful in extending tumor remission in bladder cancer, the fifth most common cancer in men. However, relapses are frequent and some patients develop resistance to BCG. CpGs were previously demonstrated to be effective in the murine MB49 model. In this paper, we modeled a more aggressive orthotopic bladder cancer than previously studied. Moreover, we compared standard BCG immunotherapy side-by-side with the Toll-like receptor-9 agonist CpG. MB49 tumor-bearing mice were treated with BCG or CpG and survival as well as tumor progression were observed over time. Urine, blood, and tumors were collected and analyzed. Mice were rechallenged and evaluated for tumor-specific immunity. In this study, CpGs induced a complete response of large aggressive orthotopic MB49 bladder tumors, resulting in tumor-specific systemic immunity. Further, data indicated that this potent antitumor effect required T cells. A comparison of CpGs and BCG in both a highly and less aggressive orthotopic tumor model, and in a subcutaneous tumor model, demonstrated that CpGs were superior to BCG. In the orthotopic model, BCG induced a local cytokine storm during treatment initiation whereas CpG affected a more refined cytokine pattern over time. Increased levels of cytokines in serum correlated with enhanced survival in the subcutaneous model. Further, immune cell depletion studies demonstrated that CpG-induced protective immunity was CD4 T-cell dependent. Taken together, our data suggest that CpGs are superior to BCG for bladder cancer immunotherapy. Thus, this potent new drug may be an attractive therapeutic alternative and should be evaluated in bladder cancer patients.

  • 23.
    Mangsbo, Sara M
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Sanchez, Javier
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Anger, Kerstin
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Lambris, John D
    Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia.
    Ekdahl, Kristina Nilsson
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Loskog, Angelica S
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Nilsson, Bo
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Tötterman, Thomas H
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Complement Activation by CpG in a Human Whole Blood Loop System: Mechanisms and Immunomodulatory Effects2009Inngår i: Journal of Immunology, ISSN 0022-1767, E-ISSN 1550-6606, Vol. 183, nr 10, s. 6724-6732Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Phosphorothioate oligodeoxynucleotides can activate complement, and experimental murine studies have revealed differential effects upon simultaneous TLR stimulation and complement activation compared with either event alone. We set out to investigate the immune stimulatory effects of CpG 2006 in fresh non-anticoagulated human blood with or without presence of active complement. We also sought to elucidate the mechanism behind complement activation upon stimulation with phosphorothioate CpG 2006. In a human blood loop system, both backbone and sequence-specific effects by CpG were counteracted by selective inhibition of C3. Furthermore, DNA backbone-mediated CD40 and CD83 expression on monocytes and sequence-specific IL-6 and TNF production were reduced by complement inhibition. CpG-induced complement activation occurred via either the classical or the alternative pathway and deposits of both IgM and properdin, two activators of complement, were detected on CpG after incubation with EDTA plasma. Quartz crystal microbalance with dissipation monitoring demonstrated alternative pathway convertase build-up onto CpG as a likely pathway to initiate and sustain complement activation. Specific inhibition of C3 suppressed CpG 2006 uptake into monocytes indicating that C3 fragments are involved in CpG internalization. The interplay between complement and TLR9 signaling demonstrated herein warrants further investigation.

  • 24.
    Mangsbo, Sara
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Sandin, Linda
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Anger, Kerstin
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Korman, Alan
    Loskog, Angelica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Tötterman, Thomas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Enhanced tumor eradication by combining CTLA-4 or PD-1 blockade with CpG therapy2010Inngår i: Journal of immunotherapy (1997), ISSN 1524-9557, E-ISSN 1537-4513, Vol. 33, nr 3, s. 225-235Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Tumor immunotherapy aims to break effector T cell anergy and to block suppressive cell types and ligands allowing effector cells to exert tumor eradication. Previous reports demonstrate that cytotoxic T lymphocyte antigen-4 (CTLA-4)-blocking antibodies promote T cell activation and render T effector cells resistant to T regulatory cells (Tregs) whereas programmed death receptor-1 (PD-1)/ PD-L1 blockade results in loss of peripheral tolerance. Herein, we explored single or combined antibody blockade of CTLA-4 and PD-1 alone or combined with the TLR agonists CpG or bacillus Calmette-Guerin (BCG) for treatment of murine experimental bladder cancer. In therapeutic studies, tumors were rejected by anti-CTLA4 (aCTLA4) while aPD-1 suppressed tumor growth. The combination had no additive effect compared with aCTLA-4 alone. However, elevated levels of circulating CD107a expressing CD8+ T cells were found in the aCTLA-4 plus aPD-1 group. In addition, levels of antinuclear antibodies (ANA) correlated inversely with tumor size. Next, we combined CpG or BCG with aCTLA-4, aPD-1 or aPD-L1 and found that CpG in combination with aCTLA-4 or aPD-1 increased the survival of mice, with aPD-1 plus CpG being superior to either agent alone. CpG plus aCTLA-4 or aPD-1 increased the numbers of circulating tumor-specific CD107a expressing CD8+ T cells as well as activated (CD25+ FoxP3-) CD4+ splenocytes. Further, we investigated the numbers of Tregs in the tumor area of treated animals and detected decreased levels after aCTLA-4 or aPD-1 plus CpG therapy. Thus, the combination of CpG with CTLA-4 or PD-1 blockade improved long-term survival and led to increased levels of tumor-reactive T cells and reduced numbers of Tregs at the tumor site.

  • 25.
    Ninalga, Christina
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för klinisk immunologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Loskog, Angelica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Essand, Magnus
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Tötterman, Thomas H.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    CpG oligonucleotides demonstrate increased therapeutic efficacy compared to BCG in an aggressive orthotopic bladder cancer model2008Inngår i: Journal of immunotherapy (1997), ISSN 1524-9557, E-ISSN 1537-4513, Vol. 31, nr 1, s. 34-42Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Bacillus Calmette Guérin (BCG) immunotherapy has been successful in extending tumor remission in bladder cancer, the fifth most common cancer in men. However, relapses are frequent and some patients develop resistance to BCG. CpGs were previously demonstrated to be effective in the murine MB49 model. In this paper, we modeled a more aggressive orthotopic bladder cancer than previously studied. Moreover, we compared standard BCG immunotherapy side-by-side with the Toll-like receptor-9 agonist CpG. MB49 tumor-bearing mice were treated with BCG or CpG and survival as well as tumor progression were observed over time. Urine, blood, and tumors were collected and analyzed. Mice were rechallenged and evaluated for tumor-specific immunity. In this study, CpGs induced a complete response of large aggressive orthotopic MB49 bladder tumors, resulting in tumor-specific systemic immunity. Further, data indicated that this potent antitumor effect required T cells. A comparison of CpGs and BCG in both a highly and less aggressive orthotopic tumor model, and in a subcutaneous tumor model, demonstrated that CpGs were superior to BCG. In the orthotopic model, BCG induced a local cytokine storm during treatment initiation whereas CpG affected a more refined cytokine pattern over time. Increased levels of cytokines in serum correlated with enhanced survival in the subcutaneous model. Further, immune cell depletion studies demonstrated that CpG-induced protective immunity was CD4+ T-cell dependent. Taken together, our data suggest that CpGs are superior to BCG for bladder cancer immunotherapy. Thus, this potent new drug may be an attractive therapeutic alternative and should be evaluated in bladder cancer patients.

  • 26.
    Sandin, Linda C.
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Eriksson, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Ellmark, Peter
    Loskog, Angelica S. I.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Tötterman, Thomas H.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Local CTLA4 blockade effectively restrains experimental pancreatic adenocarcinoma growth in vivo2014Inngår i: Oncoimmunology, ISSN 2162-4011, E-ISSN 2162-402X, Vol. 3, nr 1, s. e2761-, artikkel-id e27614Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Antibody-mediated blockade of CTLA4 has been shown to be effective in treating a select group of patients with late-stage melanoma. The precise mechanism underlying the clinical activity of CTLA4 immunotherapy is poorly understood, although recent experimental findings indicate that antibody-mediated depletion of regulatory T cells (Tregs) in the tumor microenvironment plays a key role in efficacious antitumor responses. In the current study, we used an experimental model of pancreatic adenocarcinoma to compare the antitumor efficacy of peritumoral low-dose anti-CTLA4 monoclonal antibody (mAb) administration to that of a commonly utilized systemic high-dose anti-CTLA4 regimen. We selected pancreatic adenocarcinoma as it presents a particular challenge to clinicians due to its aggressive behavior, metastatic spread and limited treatment options. Furthermore, Fc gamma receptor (Fc gamma R)-dense myeloid cells commonly infiltrate pancreatic tumors, such that these tumor types exhibit increased susceptibility to CTLA4 antibody-targeted Treg depletion via antibody-dependent cell-mediated cytotoxicity (ADCC). Locally administered anti-CTLA4 mAb effectively reduced tumor growth at a low dose and no additional anti-tumor effects were apparent when increasing the dose or number of injections. No significant difference in overall survival was seen when comparing locally administered low-dose with standard systemic high-dose CTLA4 blockade therapy, and both delivery routes led to increased tumor-infiltrating effector T cells and reduced Treg cells. As opposed to low-dose peritumoral treatment, high-dose systemic therapy stimulated the accumulation of Tregs in secondary lymphoid organs, an effect that could potentially counteract the antitumor immunotherapeutic benefit of CTLA4 blockade. Our study confirms previous findings that local administration of low-dose anti-CTLA4 antibody generates sustained antitumor effects and provides rationale to devise ultrasound-guided intratumoral anti-CTLA4 antibody injection regimens to treat patients with pancreatic adenocarcinoma and other types of solid tumors. In support, clinical relevancy could include reduced immune-related adverse events by limiting systemic antibody spread to immune cell-dense organs.

  • 27.
    Sandin, Linda C.
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Tötterman, Thomas H.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Mangsbo, Sara M.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Local immunotherapy based on agonistic CD40 antibodies effectively inhibits experimental bladder cancer2014Inngår i: Oncoimmunology, ISSN 2162-4011, E-ISSN 2162-402X, Vol. 3, nr 2, artikkel-id e27400Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [en]

    Local immunotherapy resurfaces in the field of cancer as a potential way to cure localized and metastatic disease with limited toxic effects. We have recently demonstrated that local administration of agonistic CD40 antibodies can cure localized as well as disseminated bladder neoplasms. This approach reduces the circulating concentrations of antibodies that would result from systemic delivery, hence resulting in limited toxicity.

  • 28.
    Sandin, Linda
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Orlova, Anna
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för läkemedelskemi, Plattformen för preklinisk PET.
    Gustafsson, Erika
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
    Ellmark, Peter
    Alligator Bioscience AB, Lund, Sweden.
    Tolmachev, Vladimir
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för biomedicinsk strålningsvetenskap.
    Tötterman, Thomas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Locally delivered CD40 agonist antibody accumulates in secondary lymphoid organs and eradicates experimental disseminated bladder cancer2014Inngår i: Cancer Immunology Research, ISSN 2326-6066, Vol. 2, nr 1, s. 80-90Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Immunotherapy with intratumoral injection of adenoviral vectors expressing CD40L has yielded positive results in experimental and clinical bladder cancer. We therefore hypothesized that anti-CD40 antibody would be effective in this setting. Agonistic CD40 antibodies were developed as vaccine adjuvants but have later been used as treatment for advanced solid tumors and hematological cancers. Systemic anti-CD40 therapy has been associated with immune-related adverse events such as cytokine release syndrome and liver toxicity and local delivery is an attractive approach that could reduce toxicity. Herein, we compared local and systemic anti-CD40 antibody delivery to evaluate efficacy, toxicity and biodistribution in the experimental MB49 bladder cancer model. Anti-tumor effects were confirmed in the B16 model. In terms of anti-tumor efficacy, local anti-CD40 antibody stimulation was superior to systemic therapy at an equivalent dose and CD8 T-cells were crucial for tumor growth inhibition. Both administration routes were dependent on host CD40 expression for therapeutic efficacy. In vivo biodistribution studies revealed CD40-specific antibody accumulation in tumor-draining lymph nodes and spleen, most likely reflecting organs with frequent target antigen-expressing immune cells. Systemic administration led to higher antibody concentrations in liver and blood compared to local delivery, and was associated with elevated levels of serum haptoglobin. Despite the lack of a slow-release system, local anti-CD40 therapy was dependent on tumor antigen at the injection site for clearance of distant tumors. To summarize, local low-dose administration of anti-CD40 antibody mediates anti-tumor effects in murine models with reduced toxicity and may represent an attractive treatment alternative in the clinic.

  • 29.
    Schiza, Aglaia
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi.
    Wenthe, Jessica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Eriksson, Emma
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Nilsson, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Radiologi.
    Tötterman, Thomas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Loskog, Angelica S.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Ullenhag, Gustav
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi.
    Adenovirus-mediated CD40L gene transfer increases teffector/tregulatory cell ratio and upregulates death receptors in metastatic melanoma patients2017Inngår i: Scandinavian Journal of Immunology, ISSN 0300-9475, E-ISSN 1365-3083, Vol. 86, nr 4, s. 337-337Artikkel i tidsskrift (Annet vitenskapelig)
  • 30.
    Schiza, Aglaia
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi. Uppsala Univ Hosp, Dept Oncol, Entrance 78, S-75185 Uppsala, Sweden.
    Wenthe, Jessica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Svensson, Emma
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Nilsson, Anders
    Uppsala Univ Hosp, Div Radiol, Uppsala, Sweden.
    Tötterman, Thomas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Loskog, Angelica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Ullenhag, Gustav
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Experimentell och klinisk onkologi. Uppsala Univ Hosp, Dept Oncol, Entrance 78, S-75185 Uppsala, Sweden.
    Adenovirus-mediated CD40L gene transfer increases Teffector/Tregulatory cell ratio and upregulates death receptors in metastatic melanoma patients2017Inngår i: Journal of Translational Medicine, ISSN 1479-5876, E-ISSN 1479-5876, Vol. 15, nr 79Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background and aims: Malignant melanoma is an aggressive tumor sensitive for immunotherapy such as checkpoint blockade antibodies. Still, most patients with late stage disease do not respond, and the side effects can be severe. Stimulation of the CD40 pathway to initiate anti-tumor immunity is a promising alternative. Herein, we demonstrate immune profiling data from melanoma patients treated with an adenovirus-based CD40 ligand gene therapy (AdCD40L). Methods: Peripheral blood mononuclear cells and plasma were collected from malignant melanoma patients (n = 15) enrolled in a phase I/IIa study investigating intratumoral delivery of AdCD40L with or without low dose cyclophosphamide. Cells were analyzed by flow cytometry while plasma samples were analyzed by a multi-array proteomics. Results: All patients had an increased Teffector/Tregulatory cell ratio post therapy. Simultaneously, the death receptors TNFR1 and TRAIL-R2 were significantly up-regulated post treatment. Stem cell factor (SCF), E-selectin, and CD6 correlated to enhanced overall survival while a high level of granulocytic myeloid-derived suppressor cells (gMDSCs), IL8, IL10, TGFb1, CCL4, PlGF and Fl3t ligand was highest in patients with short survival. Conclusions: AdCD40L intratumoral injection induced desirable systemic immune effects that correlated to prolonged survival. Further studies using CD40 stimulation in malignant melanoma are warranted.

  • 31. Sharp, Phoebe E H
    et al.
    Martin-Ramirez, Javier
    Boross, Peter
    Mangsbo, Sara M
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi. Department of Human Genetics, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands.
    Reynolds, John
    Moss, Jill
    Pusey, Charles D
    Cook, H Terence
    Tarzi, Ruth M
    Verbeek, J Sjef
    Increased incidence of anti-GBM disease in Fcgamma receptor 2b deficient mice, but not mice with conditional deletion of Fcgr2b on either B cells or myeloid cells alone2012Inngår i: Molecular Immunology, ISSN 0161-5890, E-ISSN 1872-9142, Vol. 50, nr 1-2, s. 49-56Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Fcgamma receptor 2b (Fcgr2b) is the only inhibitory Fcgamma receptor in both humans and mice, and is implicated in both antibody production and effector responses to antibody complexes. Reduced function of Fcgr2b has previously been associated with anti-glomerular basement membrane antibody (anti-GBM) disease in mice. However, the mice used had 129 genetic elements flanking the deleted Fcgr2b gene, which are known to increase susceptibility to autoimmunity. In order to confirm a role for Fcgr2b in protection from anti-GBM disease, wild type (WT) mice, mice lacking Fcgr2b on a pure C57BL/6 background, or mice lacking Fcgr2b on a C57BL/6 background with 129 flanking sequences, were immunized with the recombinant NC1 domain of alpha 3 Type IV collagen. Twenty two weeks after immunization, there was a higher incidence of crescentic glomerulonephritis, macrophage infiltration and renal dysfunction in both groups of Fcgr2b-/- mice, indicating an important role of Fcgr2b in regulating the development of anti-GBM disease, on both genetic backgrounds. In order to determine the cellular origin of the Fcgr2b-associated effect, disease was induced in mice with deficiency of Fcgr2b on either B cells alone (CD19Cre), or a subset of myeloid cells (LysozymeMCre). Neither B cell nor myeloid specific knockout mice developed crescentic glomeruonephritis with higher incidence than WT mice indicating that Fcgr2b deficiency on either B cells or a subset of myeloid cells alone is not sufficient to increase susceptibility to anti-GBM disease, but that a combination of cell types, or deficiency of Fcgr2b in a different cell type, is also required.

  • 32. Sharp, Phoebe E H
    et al.
    Martin-Ramirez, Javier
    Mangsbo, Sara M
    Department of Human Genetics, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands.
    Boross, Peter
    Pusey, Charles D
    Touw, Ivo P
    Cook, H Terence
    Verbeek, J Sjef
    Tarzi, Ruth M
    FcγRIIb on Myeloid Cells and Intrinsic Renal Cells Rather than B Cells Protects from Nephrotoxic Nephritis2013Inngår i: Journal of Immunology, ISSN 0022-1767, E-ISSN 1550-6606, Vol. 190, nr 1, s. 340-348Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    FcγRIIb is the sole inhibitory FcR for IgG in humans and mice, where it is involved in the negative regulation of Ab production and cellular activation. FcγRIIb-deficient mice show exacerbated disease following the induction of nephrotoxic nephritis (NTN). In this study, we determined the cellular origin of the FcγRIIb-knockout phenotype by inducing NTN in mice with a deficiency of FcγRIIb on either B cells alone (FcγRIIBfl/fl/CD19Cre+) or myeloid cells (FcγRIIBfl/fl/CEBPαCre+). Deletion of FcγRIIb from B cells did not increase susceptibility to NTN, compared with wild-type (WT) mice, despite higher Ab titers in the FcγRIIBfl/fl/CD19Cre+ mice compared with the WT littermate controls. In contrast, mice lacking FcγRIIb on myeloid cells had exacerbated disease as measured by increased glomerular thrombosis, glomerular crescents, albuminuria, serum urea, and glomerular neutrophil infiltration when compared with WT littermate controls. The role for FcγRIIb expression on radioresistant intrinsic renal cells in the protection from NTN was then investigated using bone marrow chimeric mice. FcγRIIb−/− mice transplanted with FcγRIIb−/− bone marrow were more susceptible to NTN than WT mice transplanted with FcγRIIb−/− bone marrow, indicating that the presence of WT intrinsic renal cells protects from NTN. These results demonstrate that FcγRIIb on myeloid cells plays a major role in protection from NTN, and therefore, augmentation of FcγRIIb on these cells could be a therapeutic target in human Ab-mediated glomerulonephritis. Where there was a lack of FcγRIIb on circulating myeloid cells, expression of FcγRIIb on intrinsic renal cells provided an additional level of protection from Ab-mediated glomerulonephritis.

  • 33.
    van Hooren, Luuk
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Vaskulärbiologi.
    Sandin, Linda C.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Moskalev, Igor
    Vancouver Prostate Centre, University of British Columbia, Vancouver, Canada.
    Ellmark, Peter
    Alligator Bioscience AB, Lund, Sweden; Department of Immunotechnology, Lund University, Lund, Sweden.
    Dimberg, Anna
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Vaskulärbiologi.
    Black, Peter
    Alligator Bioscience AB, Lund, Sweden.
    Tötterman, Thomas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Mangsbo, Sara
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Klinisk immunologi.
    Local checkpoint inhibition of CTLA-4 as a monotherapy or in combination with anti-PD1 prevents the growth of murine bladder cancer2017Inngår i: European Journal of Immunology, ISSN 0014-2980, E-ISSN 1521-4141, Vol. 47, nr 2, s. 385-393Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Checkpoint blockade of CTLA-4 results in long-lasting survival benefits in metastatic cancer patients. However, patients treated with CTLA-4 blockade have suffered from immune-related adverse events, most likely due to the breadth of the induced T-cell activation. Here, we investigated the efficacy of a local low-dose anti-CTLA-4 administration for treatment of subcutaneous or orthotopic murine bladder 49 (MB49) bladder carcinoma in C57BL/6 mice. When MB49 tumors were grown s.c., peritumoral (p.t.) injection of anti-CTLA-4 treatment was equally effective as intravenous or s.c. (nontumor bearing flank) administration. Notably, p.t. injection was associated with lower circulating antibody levels and decreased IL-6 serum levels as compared to systemic treatment. Ultrasound-guided intratumoral anti-CTLA-4 antibody treatment of orthotopically growing MB49 tumors resulted in tumor regression, with more than tenfold reduction in systemic antibody levels as compared to i.v. or s.c. administration, in line with the compartmentally restrained nature of the bladder. Local anti-CTLA-4 therapy in combination with anti-PD-1 therapy resulted in complete responses, superior to each therapy alone. In addition, p.t. anti-CTLA-4 therapy was potentiated by depletion of regulatory T cells. Our results demonstrate that local anti-CTLA-4 antibody therapy is equally effective as systemic administration, but reduces systemic antibody levels and cytokine release, and enhances the response to anti-PD1 therapy.

  • 34. van Montfoort, Nadine
    et al.
    Mangsbo, Sara M
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi. Department of Immunohematology & Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
    Camps, Marcel G M
    van Maren, Wendy W C
    Verhaart, Ingrid E C
    Waisman, Ari
    Drijfhout, Jan Wouter
    Melief, Cornelis J M
    Verbeek, J Sjef
    Ossendorp, Ferry
    Circulating specific antibodies enhance systemic cross-priming by delivery of complexed antigen to dendritic cells in vivo2012Inngår i: European Journal of Immunology, ISSN 0014-2980, E-ISSN 1521-4141, Vol. 42, nr 3, s. 598-606Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Increasing evidence suggests that antibodies can have stimulatory effects on T-cell immunity. However, the contribution of circulating antigen-specific antibodies on MHC class I cross-priming in vivo has not been conclusively established. Here, we defined the role of circulating antibodies in cross-presentation of antigen to CD8+ T cells. Mice with hapten-specific circulating antibodies, but naϊve for the T-cell antigen, were infused with haptenated antigen and CD8+ T-cell induction was measured. Mice with circulating hapten-specific antibodies showed significantly enhanced cross-presentation of the injected antigen compared with mice that lacked these antibodies. The enhanced cross-presentation in mice with circulating antigen-specific antibodies was associated with improved antigen capture by APCs. Importantly, CD11c+ APCs were responsible for the enhanced and sustained cross-presentation, although CD11c APCs had initially captured a significant amount of the injected antigen. Thus, in vivo formation of antigen-antibody immune complexes improves MHC class I cross-presentation, and CD8+ T-cell activation, demonstrating that humoral immunity can aid the initiation of systemic cellular immunity. These findings have important implications for the understanding of the action of therapeutic antibodies against tumor-associated antigens intensively used in the clinic nowadays.

  • 35. van Montfoort, Nadine
    et al.
    't Hoen, Peter A C
    Mangsbo, Sara M
    Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden 2333 ZA, The Netherlands.
    Camps, Marcel G M
    Boross, Peter
    Melief, Cornelis J M
    Ossendorp, Ferry
    Verbeek, J Sjef
    Fcγ receptor IIb strongly regulates Fcγ receptor-facilitated T cell activation by dendritic cells2012Inngår i: Journal of Immunology, ISSN 0022-1767, E-ISSN 1550-6606, Vol. 189, nr 1, s. 92-101Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    FcγR ligation by Ag-Ab immune complexes (IC) not only mediates effective Ag uptake, but also strongly initiates dendritic cell (DC) maturation, a requirement for effective T cell activation. Besides the activating FcγRI, FcγRIII, and FcγRIV, the inhibitory FcγRIIb is expressed on DCs. It is unclear how the ratio between signals from the activating FcγR and the inhibitory FcγRIIb determines the outcome of FcγR ligation on DCs. By microarray analysis, we compared the transcriptomes of steady state and IC-activated bone marrow-derived wild-type (WT) DCs expressing all FcγR or DCs expressing only activating FcγR (FcγRIIb knockout [KO]) or only the inhibitory FcγRIIb (FcR γ-chain KO). In WT DCs, we observed a gene expression profile associated with effective T cell activation, which was absent in FcR γ-chain KO, but strikingly more pronounced in FcγRIIb KO bone marrow-derived DCs. These microarray results, confirmed at the protein level for many cytokines and other immunological relevant genes, demonstrate that the transcriptome of IC-activated DCs is dependent on the presence of the activating FcγR and that the modulation of the expression of the majority of the genes was strongly regulated by FcγRIIb. Our data suggest that FcγRIIb-deficient DCs have an improved capacity to activate naive T lymphocytes. This was confirmed by their enhanced FcγR-dependent Ag presentation and in vivo induction of CD8(+) T cell expansion compared with WT DCs. Our findings underscore the potency of FcγR ligation on DCs for the effective induction of T cell immunity by ICs and the strong regulatory role of FcγRIIb.

  • 36. Yilmaz-Elis, A Seda
    et al.
    Ramirez, Javier Martin
    Asmawidjaja, Patrick
    van der Kaa, Jos
    Mus, Anne-Marie
    Brem, Maarten D
    Claassens, Jill W C
    Breukel, Cor
    Brouwers, Conny
    Mangsbo, Sara M
    Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands .
    Boross, Peter
    Lubberts, Erik
    Verbeek, J Sjef
    FcγRIIb on myeloid cells rather than on B cells protects from collagen-induced arthritis2014Inngår i: Journal of Immunology, ISSN 0022-1767, E-ISSN 1550-6606, Vol. 192, nr 12, s. 5540-5547Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Extensive analysis of a variety of arthritis models in germline KO mice has revealed that all four receptors for the Fc part of IgG (FcγR) play a role in the disease process. However, their precise cell type-specific contribution is still unclear. In this study, we analyzed the specific role of the inhibiting FcγRIIb on B lymphocytes (using CD19Cre mice) and in the myeloid cell compartment (using C/EBPαCre mice) in the development of arthritis induced by immunization with either bovine or chicken collagen type II. Despite their comparable anti-mouse collagen autoantibody titers, full FcγRIIb knockout (KO), but not B cell-specific FcγRIIb KO, mice showed a significantly increased incidence and severity of disease compared with wild-type control mice when immunized with bovine collagen. When immunized with chicken collagen, disease incidence was significantly increased in pan-myeloid and full FcγRIIb KO mice, but not in B cell-specific KO mice, whereas disease severity was only significantly increased in full FcγRIIb KO mice compared with incidence and severity in wild-type control mice. We conclude that, although anti-mouse collagen autoantibodies are a prerequisite for the development of collagen-induced arthritis, their presence is insufficient for disease development. FcγRIIb on myeloid effector cells, as a modulator of the threshold for downstream Ab effector pathways, plays a dominant role in the susceptibility to collagen-induced arthritis, whereas FcγRIIb on B cells, as a regulator of Ab production, has a minor effect on disease susceptibility.

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