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Rosestedt, Maria
Publications (10 of 19) Show all publications
Rosestedt, M., Andersson, K. G., Mitran, B., Rinne, S. S., Tolmachev, V., Löfblom, J., . . . Ståhl, S. (2017). Evaluation of radiocobalt-labelled affibody molecule for imaging of human epidermal growth factor receptor 3 expression. International Journal of Oncology, 51(6), 1765-1774
Open this publication in new window or tab >>Evaluation of radiocobalt-labelled affibody molecule for imaging of human epidermal growth factor receptor 3 expression
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2017 (English)In: International Journal of Oncology, ISSN 1019-6439, Vol. 51, no 6, p. 1765-1774Article in journal (Refereed) Published
Abstract [en]

The human epidermal growth factor receptor 3 (HER3) is involved in the development of cancer resistance towards tyrosine kinase-targeted therapies. Several HER3‑targeting therapeutics are currently under clinical evaluation. Non-invasive imaging of HER3 expression could improve patient management. Affibody molecules are small engineered scaffold proteins demonstrating superior properties as targeting probes for molecular imaging compared with monoclonal antibodies. Feasibility of in vivo HER3 imaging using affibody molecules has been previously demonstrated. Preclinical studies have shown that the contrast when imaging using anti-HER3 affibody molecules can be improved over time. We aim to develop an agent for PET imaging of HER3 expression using the long-lived positron-emitting radionuclide cobalt-55 (55Co) (T1/2=17.5 h). A long-lived cobalt isotope 57Co was used as a surrogate for 55Co in this study. The anti-HER3 affibody molecule HEHEHE-ZHER3-NOTA was labelled with radiocobalt with high yield, purity and stability. Biodistribution of 57Co-HEHEHE-ZHER3-NOTA was measured in mice bearing DU145 (prostate carcinoma) and LS174T (colorectal carcinoma) xenografts at 3 and 24 h post injection (p.i.). Tumour-to-blood ratios significantly increased between 3 and 24 h p.i. (p<0.05). At 24 h p.i., tumour-to-blood ratios were 6 for DU145 and 8 for LS174T xenografts, respectively. HER3‑expressing xenografts were clearly visualized in a preclinical imaging setting already 3 h p.i., and contrast further improved at 24 h p.i. In conclusion, the radiocobalt-labelled anti-HER3 affibody molecule, HEHEHE-ZHER3-NOTA, is a promising tracer for imaging of HER3 expression in tumours.

Keywords
HER3, affibody, PET imaging, Cobalt-55/57, NOTA-chelator
National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
urn:nbn:se:uu:diva-343404 (URN)10.3892/ijo.2017.4152 (DOI)000416685600014 ()
Funder
Knut and Alice Wallenberg FoundationSwedish Cancer Society, CAN2014/474Swedish Research Council, 2015-02509Swedish Research Council, 2015-02353Swedish Research Council, 2012-05236Swedish Cancer Society, CAN2015/350Swedish Cancer Society, CAN2016/463VINNOVA, 2016-04060
Available from: 2018-02-27 Created: 2018-02-27 Last updated: 2018-05-29Bibliographically approved
Bass, T. Z., Rosestedt, M., Mitran, B., Frejd, F. Y., Löfblom, J., Tolmachev, V., . . . Orlova, A. (2017). In vivo evaluation of a novel format of a bivalent HER3-targeting and albumin- binding therapeutic affibody construct. Scientific Reports, 7, Article ID 43118.
Open this publication in new window or tab >>In vivo evaluation of a novel format of a bivalent HER3-targeting and albumin- binding therapeutic affibody construct
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2017 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 7, article id 43118Article in journal (Refereed) Published
Abstract [en]

Overexpression of human epidermal growth factor receptor 3 (HER3) is involved in resistance to several therapies for malignant tumours. Currently, several anti-HER3 monoclonal antibodies are under clinical development. We introduce an alternative approach to HER3-targeted therapy based on engineered scaffold proteins, i.e. affibody molecules. We designed a small construct (22.5 kDa, denoted 3A3), consisting of two high-affinity anti-HER3 affibody molecules flanking an albumin-binding domain ABD, which was introduced for prolonged residence in circulation. In vitro, 3A3 efficiently inhibited growth of HER3-expressing BxPC-3 cells. Biodistribution in mice was measured using 3A3 that was site-specifically labelled with In-111 via a DOTA chelator. The residence time of In-111-DOTA-3A3 in blood was extended when compared with the monomeric affibody molecule. In-111-DOTA-3A3 accumulated specifically in HER3-expressing BxPC-3 xenografts in mice. However, In-111-DOTA-3A3 cleared more rapidly from blood than a size-matched control construct In-111-DOTA-TAT, most likely due to sequestering of 3A3 by mErbB3, the murine counterpart of HER3. Repeated dosing and increase of injected protein dose decreased uptake of In-111-DOTA-3A3 in mErbB3-expressing tissues. Encouragingly, growth of BxPC-3 xenografts in mice was delayed in an experimental (pilot-scale) therapy study using 3A3. We conclude that the 3A3 affibody format seems promising for treatment of HER3-overexpressing tumours.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-318958 (URN)10.1038/srep43118 (DOI)000394748000001 ()28230065 (PubMedID)
Funder
Swedish Cancer Society, CAN2013-586, CAN 2016/463, CAN2014-474, CAN2015/350Swedish Research Council, Swedish Research Council 621-2012-5236, 2015-02509, 2015-02353VINNOVA, 2016-04060
Available from: 2017-03-30 Created: 2017-03-30 Last updated: 2017-11-29Bibliographically approved
Rosestedt, M., Mitran, B., Andersson, K. G., Löfblom, J., Ståhl, S., Tolmachev, V. & Orlova, A. (2016). Development and Evaluation of Radiocobalt-labelled Affibody Molecule for Next Day PET Imaging of HER3 Expression. Paper presented at Annual Congress of the European-Association-of-Nuclear-Medicine (EANM), OCT 15-19, 2016, Barcelona, SPAIN. European Journal of Nuclear Medicine and Molecular Imaging, 43, S37-S38
Open this publication in new window or tab >>Development and Evaluation of Radiocobalt-labelled Affibody Molecule for Next Day PET Imaging of HER3 Expression
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2016 (English)In: European Journal of Nuclear Medicine and Molecular Imaging, ISSN 1619-7070, E-ISSN 1619-7089, Vol. 43, p. S37-S38Article in journal, Meeting abstract (Refereed) Published
National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
urn:nbn:se:uu:diva-316223 (URN)000391801600070 ()
Conference
Annual Congress of the European-Association-of-Nuclear-Medicine (EANM), OCT 15-19, 2016, Barcelona, SPAIN
Available from: 2017-02-27 Created: 2017-02-27 Last updated: 2017-11-29Bibliographically approved
Orlova, A., Rosestedt, M., Mitran, B., Bass, T., Frejd, F. Y., Löfblom, J., . . . Ståhl, S. (2016). In vivo evaluation of pharmacokinetics, tumors targeting and therapeutic efficacy of a novel format of HER3-targeting affibody molecule with prolonged blood circulation. Paper presented at Annual Congress of the European-Association-of-Nuclear-Medicine (EANM), OCT 15-19, 2016, Barcelona, SPAIN. European Journal of Nuclear Medicine and Molecular Imaging, 43, S237-S237
Open this publication in new window or tab >>In vivo evaluation of pharmacokinetics, tumors targeting and therapeutic efficacy of a novel format of HER3-targeting affibody molecule with prolonged blood circulation
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2016 (English)In: European Journal of Nuclear Medicine and Molecular Imaging, ISSN 1619-7070, E-ISSN 1619-7089, Vol. 43, p. S237-S237Article in journal (Refereed) Published
National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
urn:nbn:se:uu:diva-316221 (URN)000391801600595 ()
Conference
Annual Congress of the European-Association-of-Nuclear-Medicine (EANM), OCT 15-19, 2016, Barcelona, SPAIN
Available from: 2017-02-27 Created: 2017-02-27 Last updated: 2017-11-29Bibliographically approved
Rosestedt, M., Andersson, K. G., Mitran, B., Tolmachev, V., Lofblom, J., Orlova, A. & Stahl, S. (2015). Affibody-mediated PET imaging of HER3 expression in malignant tumours. Scientific Reports, 5, Article ID 15226.
Open this publication in new window or tab >>Affibody-mediated PET imaging of HER3 expression in malignant tumours
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2015 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 5, article id 15226Article in journal (Refereed) Published
Abstract [en]

Human epidermal growth factor receptor 3 (HER3) is involved in the progression of various cancers and in resistance to therapies targeting the HER family. In vivo imaging of HER3 expression would enable patient stratification for anti-HER3 immunotherapy. Key challenges with HER3-targeting are the relatively low expression in HER3-positive tumours and HER3 expression in normal tissues. The use of positron-emission tomography (PET) provides advantages of high resolution, sensitivity and quantification accuracy compared to SPECT. Affibody molecules, imaging probes based on a non-immunoglobulin scaffold, provide high imaging contrast shortly after injection. The aim of this study was to evaluate feasibility of PET imaging of HER3 expression using Ga-68-labeled affibody molecules. The anti-HER3 affibody molecule HEHEHE-Z08698-NOTA was successfully labelled with Ga-68 with high yield, purity and stability. The agent bound specifically to HER3-expressing cancer cells in vitro and in vivo. At 3 h pi, uptake of Ga-68-HEHEHE-Z08698-NOTA was significantly higher in xenografts with high HER3 expression (BT474, BxPC-3) than in xenografts with low HER3 expression (A431). In xenografts with high expression, tumour-to-blood ratios were >20, tumour-to-muscle >15, and tumour-to-bone >7. HER3-positive xenografts were visualised using microPET 3 h pi. In conclusion, PET imaging of HER3 expression is feasible using Ga-68-HEHEHE-Z08698-NOTA shortly after administration.

National Category
Medical Image Processing Cancer and Oncology
Identifiers
urn:nbn:se:uu:diva-266695 (URN)10.1038/srep15226 (DOI)000362985400001 ()26477646 (PubMedID)
Funder
Swedish Cancer SocietySwedish Research Council
Available from: 2015-11-12 Created: 2015-11-10 Last updated: 2017-12-01Bibliographically approved
Andersson, K. G., Rosestedt, M., Varasteh, Z., Malm, M., Sandström, M., Tolmachev, V., . . . Orlova, A. (2015). Comparative evaluation of 111In-labeled NOTA‑conjugated affibody molecules for visualization of HER3 expression in malignant tumors. Oncology Reports, 34(2), 1042-1048
Open this publication in new window or tab >>Comparative evaluation of 111In-labeled NOTA‑conjugated affibody molecules for visualization of HER3 expression in malignant tumors
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2015 (English)In: Oncology Reports, ISSN 1021-335X, E-ISSN 1791-2431, Vol. 34, no 2, p. 1042-1048Article in journal (Refereed) Published
Abstract [en]

Expression of human epidermal growth factor receptor type 3 (HER3) in malignant tumors has been associated with resistance to a variety of anticancer therapies. Several anti-HER3 monoclonal antibodies are currently under pre-clinical and clinical development aiming to overcome HER3-mediated resistance. Radionuclide molecular imaging of HER3 expression may improve treatment by allowing the selection of suitable patients for HER3-targeted therapy. Affibody molecules are a class of small (7 kDa) high-affinity targeting proteins with appreciable potential as molecular imaging probes. In a recent study, we selected affibody molecules with affinity to HER3 at a low picomolar range. The aim of the present study was to develop an anti-HER3 affibody molecule suitable for labeling with radiometals. The HEHEHE-Z08698-NOTA and HEHEHE-Z08699-NOTA HER3-specific affibody molecules were labeled with indium-111 (In-111) and assessed in vitro and in vivo for imaging properties using single photon emission computed tomography (SPECT). Labeling of HEHEHE-Z08698-NOTA and HEHEHE-Z08699-NOTA with In-111 provided stable conjugates. In vitro cell tests demonstrated specific binding of the two conjugates to HER3-expressing BT-474 breast carcinoma cells. In mice bearing BT-474 xenografts, the tumor uptake of the two conjugates was receptor-specific. Direct in vivo comparison of In-111-HEHEHE-Z08698-NOTA and In-111-HEHEHE-Z08699-NOTA demonstrated that the two conjugates provided equal radioactivity uptake in tumors, although the tumor-to-blood ratio was improved for In-111-HEHEHE-Z08698-NOTA [12 +/- 3 vs. 8 +/- 1,4 h post injection (p.i)] due to more efficient blood clearance. In-111-HEHEHE-Z08698-NOTA is a promising candidate for imaging of HER3-expression in malignant tumors using SPECT. Results of the present study indicate that this conjugate could be used for patient stratification for anti-HER3 therapy.

Keywords
NOTA, indium-111, affibody molecules, HER3, molecular imaging
National Category
Cancer and Oncology
Identifiers
urn:nbn:se:uu:diva-260279 (URN)10.3892/or.2015.4046 (DOI)000357965600060 ()26059265 (PubMedID)
Funder
Swedish Cancer SocietySwedish Research Council
Available from: 2015-08-21 Created: 2015-08-18 Last updated: 2018-05-24Bibliographically approved
Andersson, J., Rosestedt, M. & Orlova, A. (2015). Imaging of HER2 may improve the outcome of external irradiation therapy for prostate cancer patients. Oncology Letters, 9(2), 950-954
Open this publication in new window or tab >>Imaging of HER2 may improve the outcome of external irradiation therapy for prostate cancer patients
2015 (English)In: Oncology Letters, ISSN 1792-1074, E-ISSN 1792-1082, Vol. 9, no 2, p. 950-954Article in journal (Refereed) Published
Abstract [en]

Prostate cancer (PCa) is the most common type of cancer among males. Human epidermal growth factor receptor type 2 (HER2) expression in PCa has been reported by several studies and its involvement in the progression towards androgen-independent PCa has been discussed. External irradiation is one of the existing therapies, which has been demonstrated to be efficient in combination with androgen deprivation therapy for the treatment of advanced PCa. However, 20-40% of patients develop recurrent and more aggressive PCa within 10 years. The current study investigates the involvement of HER2 in survival and radioresistance in PCa cells and we hypothesized that, by monitoring HER2 expression, treatment may be personalized. The PCa cell lines, LNCap, PC3 and DU-145, received a 6 Gy single dose of external irradiation. The number of PC3 cells was not affected by a single dose of radiation, whereas a 5-fold decrease in cell number was detected in LNCap (P<0.00001) and DU-145 (P<0.0001) cells. The HER2 expression in PC3 exhibited a significant increase post irradiation, however, the expression was stable in the remaining cell lines. The administration of trastuzumab post-irradiation resulted in a 2-fold decrease in the PC3 cell number, while the drug did not demonstrate additional effects in LNCap and DU-145 cells, when compared with that of irradiation treatment alone. The results of the present study demonstrated that an increase in membranous HER2 expression in response to external irradiation may indicate cell radioresistance. Furthermore, imaging of HER2 expression prior to and following external irradiation may present a step towards personalized therapy in PCa.

Keywords
prostate cancer, external irradiation, molecular imaging, human epidermal growth factor receptor type 2
National Category
Cancer and Oncology
Identifiers
urn:nbn:se:uu:diva-247408 (URN)10.3892/ol.2014.2760 (DOI)000349506300086 ()
Note

De 2 första författarna delar förstaförfattarskapet

Available from: 2015-03-20 Created: 2015-03-18 Last updated: 2017-12-04Bibliographically approved
Orlova, A., Varasteh, Z., Mitran, B., Rosestedt, M., Velikyan, I., Rosenström, U., . . . Tolmachev, V. (2015). Influence of chelators on targeting properties of In-111 and Ga-68 labeled GRPR antagonist. Journal of labelled compounds & radiopharmaceuticals, 58, S88-S88
Open this publication in new window or tab >>Influence of chelators on targeting properties of In-111 and Ga-68 labeled GRPR antagonist
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2015 (English)In: Journal of labelled compounds & radiopharmaceuticals, ISSN 0362-4803, E-ISSN 1099-1344, Vol. 58, p. S88-S88Article in journal, Meeting abstract (Other academic) Published
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
urn:nbn:se:uu:diva-284894 (URN)000369950200089 ()
Available from: 2016-04-19 Created: 2016-04-19 Last updated: 2017-11-30Bibliographically approved
Varasteh, Z., Mitran, B., Rosenström, U., Velikyan, I., Rosestedt, M., Lindeberg, G., . . . Orlova, A. (2015). The effect of macrocyclic chelators on the targeting properties of the 68Ga-labeled gastrin releasing peptide receptor antagonist PEG2-RM26. Nuclear Medicine and Biology, 42(5), 446-454
Open this publication in new window or tab >>The effect of macrocyclic chelators on the targeting properties of the 68Ga-labeled gastrin releasing peptide receptor antagonist PEG2-RM26
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2015 (English)In: Nuclear Medicine and Biology, ISSN 0969-8051, E-ISSN 1872-9614, Vol. 42, no 5, p. 446-454Article in journal (Refereed) Published
Abstract [en]

Introduction

Overexpression of gastrin-releasing peptide receptors (GRPR) has been reported in several cancers. Bombesin (BN) analogs are short peptides with a high affinity for GRPR. Different BN analogs were evaluated for radionuclide imaging and therapy of GRPR-expressing tumors. We have previously investigated an antagonistic analog of BN (D-Phe-Gln-Trp-Ala-Val-Gly-His-Sta-Leu-NH2, RM26) conjugated to NOTA via a PEG2 spacer (NOTA-PEG2-RM26) labeled with 68Ga, 111In and Al18F. 68Ga-labeled NOTA-PEG2-RM26 showed high tumor-to-organ ratios.

Methods

The influence of different macrocyclic chelators (NOTA, NODAGA, DOTA and DOTAGA) on the targeting properties of 68Ga-labeled PEG2-RM26 was studied in vitro and in vivo.

Results

All conjugates were labeled with generator-produced 68Ga with high yields and demonstrated high stability and specific binding to GRPR. The IC50 values of natGa-X-PEG2-RM26 (X = NOTA, DOTA, NODAGA, DOTAGA) were 2.3 ± 0.2, 3.0 ± 0.3, 2.9 ± 0.3 and 10.0 ± 0.6 nM, respectively. The internalization of the conjugates by PC-3 cells was low. However, the DOTA-conjugated analog demonstrated a higher internalization rate compared to other analogs. GRPR-specific uptake was found in receptor-positive normal tissues and PC-3 xenografts for all conjugates. The biodistribution of the conjugates was influenced by the choice of the chelator moiety. Although all radiotracers cleared rapidly from the blood, [68Ga]Ga-NOTA-PEG2-RM26 showed significantly lower uptake in lung, muscle and bone compared to the other analogs. The uptake in tumors (5.40 ± 1.04 %ID/g at 2 h p.i.) and the tumor-to-organ ratios (25 ± 3, 157 ± 23 and 39 ± 4 for blood, muscle and bone, respectively) were significantly higher for the NOTA-conjugate than the other analogs.

Conclusions

Chelators had a clear influence on the biodistribution and targeting properties of 68Ga-labeled antagonistic BN analogs. Positively charged [68Ga]Ga-NOTA-PEG2-RM26 provided a low kidney radioactivity uptake, high affinity, high tumor uptake and high image contrast.

National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
urn:nbn:se:uu:diva-232120 (URN)10.1016/j.nucmedbio.2014.12.009 (DOI)000353369000005 ()25684649 (PubMedID)
Funder
Swedish Cancer SocietySwedish Research Council
Available from: 2014-09-12 Created: 2014-09-12 Last updated: 2017-12-05Bibliographically approved
Andersson, K. G., Varasteh, Z., Rosestedt, M., Malm, M., Sandström, M., Tolmachev, V., . . . Orlova, A. (2014). 111In-labeled NOTA-conjugated Affibody molecules for visualization of HER3 expression in malignant tumors. Paper presented at Annual Congress of the European-Association-of-Nuclear-Medicine (EANM), OCT 18-22, 2014, Gothenburg, SWEDEN. European Journal of Nuclear Medicine and Molecular Imaging, 41(S2), S311-S311, Article ID OP681.
Open this publication in new window or tab >>111In-labeled NOTA-conjugated Affibody molecules for visualization of HER3 expression in malignant tumors
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2014 (English)In: European Journal of Nuclear Medicine and Molecular Imaging, ISSN 1619-7070, E-ISSN 1619-7089, Vol. 41, no S2, p. S311-S311, article id OP681Article in journal, Meeting abstract (Other academic) Published
National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
urn:nbn:se:uu:diva-247687 (URN)000348841900497 ()
Conference
Annual Congress of the European-Association-of-Nuclear-Medicine (EANM), OCT 18-22, 2014, Gothenburg, SWEDEN
Available from: 2015-03-24 Created: 2015-03-23 Last updated: 2017-12-04Bibliographically approved
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