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DiLorenzo, SebastianORCID iD iconorcid.org/0000-0002-9759-2211
Publications (6 of 6) Show all publications
De Marchi, T., Pyl, P. T., Sjöström, M., Reinsbach, S. E., DiLorenzo, S., Nystedt, B., . . . Niméus, E. (2023). Proteogenomics decodes the evolution of human ipsilateral breast cancer. Communications Biology, 6(1), Article ID 139.
Open this publication in new window or tab >>Proteogenomics decodes the evolution of human ipsilateral breast cancer
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2023 (English)In: Communications Biology, E-ISSN 2399-3642, Vol. 6, no 1, article id 139Article in journal (Refereed) Published
Abstract [en]

Ipsilateral breast tumor recurrence (IBTR) is a clinically important event, where an isolated in-breast recurrence is a potentially curable event but associated with an increased risk of distant metastasis and breast cancer death. It remains unclear if IBTRs are associated with molecular changes that can be explored as a resource for precision medicine strategies. Here, we employed proteogenomics to analyze a cohort of 27 primary breast cancers and their matched IBTRs to define proteogenomic determinants of molecular tumor evolution. Our analyses revealed a relationship between hormonal receptors status and proliferation levels resulting in the gain of somatic mutations and copy number. This in turn re-programmed the transcriptome and proteome towards a highly replicating and genomically unstable IBTRs, possibly enhanced by APOBEC3B. In order to investigate the origins of IBTRs, a second analysis that included primaries with no recurrence pinpointed proliferation and immune infiltration as predictive of IBTR. In conclusion, our study shows that breast tumors evolve into different IBTRs depending on hormonal status and proliferation and that immune cell infiltration and Ki-67 are significantly elevated in primary tumors that develop IBTR. These results can serve as a starting point to explore markers to predict IBTR formation and stratify patients for adjuvant therapy.

Place, publisher, year, edition, pages
Springer Nature, 2023
National Category
Cancer and Oncology
Identifiers
urn:nbn:se:uu:diva-498451 (URN)10.1038/s42003-023-04526-6 (DOI)000925802900001 ()36732562 (PubMedID)
Funder
Lund University
Available from: 2023-03-16 Created: 2023-03-16 Last updated: 2023-03-16Bibliographically approved
Paulsson, J. O., Rafati, N., DiLorenzo, S., Chen, Y., Haglund, F., Zedenius, J. & Juhlin, C. C. (2021). Whole-genome Sequencing of Follicular Thyroid Carcinomas Reveal Recurrent Mutations in MicroRNA Processing Subunit DGCR8. Journal of Clinical Endocrinology and Metabolism, 106(11), 3265-3282
Open this publication in new window or tab >>Whole-genome Sequencing of Follicular Thyroid Carcinomas Reveal Recurrent Mutations in MicroRNA Processing Subunit DGCR8
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2021 (English)In: Journal of Clinical Endocrinology and Metabolism, ISSN 0021-972X, E-ISSN 1945-7197, Vol. 106, no 11, p. 3265-3282Article in journal (Refereed) Published
Abstract [en]

Background: The genomic and transcriptomic landscape of widely invasive follicular thyroid carcinomas (wiFTCs) and Hurthle cell carcinoma (HCC) are poorly characterized, and subsets of these tumors lack information on genetic driver events.

Objective: The aim of this study was to bridge this gap.

Methods: We performed whole-genome and RNA sequencing and subsequent bioinformatic analyses of 11 wiFTCs and 2 HCCs with a particularly poor prognosis, and matched normal tissue.

Results: All wiFTCs exhibited one or several mutations in established thyroid cancer genes, including TERT (n=4), NRAS (n=3), HRAS, KRAS, AKT, PTEN, PIK3CA, MUTYH, TSHR, and MEN1 (n=1 each). MutSig2CV analysis revealed recurrent somatic mutations in FAM72D (n=3, in 2 wiFTCs and in a single HCC), TP53 (n=3, in 2 wiFTCs and a single HCC), and EIF1AX (n=3), with DGCR8 (n=2) as borderline significant. The DGCR8 mutations were recurrent p.E518K missense alterations, known to cause familial multinodular goiter via disruption of microRNA (miRNA) processing. Expression analyses showed reduced DGCR8 messenger RNA expression in FTCs in general, and the 2 DGCR8 mutants displayed a distinct miRNA profile compared to DGCR8 wild-types. Copy number analyses revealed recurrent gains on chromosomes 4, 6, and 10, and fusion gene analyses revealed 27 high-quality events. Both HCCs displayed hyperploidy, which was fairly unusual in the FTC cohort. Based on the transcriptome data, tumors amassed in 2 principal clusters.

Conclusion: We describe the genomic and transcriptomic landscape in wiFTCs and HCCs and identify novel recurrent mutations and copy number alterations with possible driver properties and lay the foundation for future studies.

Place, publisher, year, edition, pages
Endocrine SocietyThe Endocrine Society, 2021
Keywords
follicular, thyroid, carcinoma, cancer, mutation, whole-genome
National Category
Cancer and Oncology
Identifiers
urn:nbn:se:uu:diva-459861 (URN)10.1210/clinem/dgab471 (DOI)000715561700014 ()34171097 (PubMedID)
Funder
Swedish Cancer Society, CAN 2016/1126Swedish Society for Medical Research (SSMF)The Cancer Research Funds of RadiumhemmetSwedish Society of Medicine
Available from: 2021-12-13 Created: 2021-12-13 Last updated: 2024-01-15Bibliographically approved
Mesmar, F., Dai, B., Ibrahim, A., Hases, L., Jafferali, M. H., Augustine, J. J., . . . Williams, C. (2019). Clinical candidate and genistein analogue AXP107-11 has chemoenhancing functions in pancreatic adenocarcinoma through G protein-coupled estrogen receptor signaling. Cancer Medicine, 8(18), 7705-7719
Open this publication in new window or tab >>Clinical candidate and genistein analogue AXP107-11 has chemoenhancing functions in pancreatic adenocarcinoma through G protein-coupled estrogen receptor signaling
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2019 (English)In: Cancer Medicine, E-ISSN 2045-7634, Vol. 8, no 18, p. 7705-7719Article in journal (Refereed) Published
Abstract [en]

Despite advances in cancer therapeutics, pancreatic cancer remains difficult to treat and often develops resistance to chemotherapies. We have evaluated a bioavailable genistein analogue, AXP107-11 which has completed phase Ib clinical trial, as an approach to sensitize tumor cells to chemotherapy. Using organotypic cultures of 14 patient-derived xenografts (PDX) of pancreatic ductal adenocarcinoma, we found that addition of AXP107-11 indeed sensitized 57% of cases to gemcitabine treatment. Results were validated using PDX models in vivo. Further, RNA-Seq from responsive and unresponsive tumors proposed a 41-gene treatment-predictive signature. Functional and molecular assays were performed in cell lines and demonstrated that the effect was synergistic. Transcriptome analysis indicated activation of G-protein-coupled estrogen receptor (GPER1) as the main underlying mechanism of action, which was corroborated using GPER1-selective agonists and antagonists. GPER1 expression in pancreatic tumors was indicative of survival, and our study proposes that activation of GPER1 may constitute a new avenue for pancreatic cancer therapeutics.

Place, publisher, year, edition, pages
John Wiley & Sons, 2019
Keywords
AXP107-11, chemoresistance, genistein, GPER1, pancreatic ductal adenocarcinoma
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy) Cancer and Oncology
Identifiers
urn:nbn:se:uu:diva-407436 (URN)10.1002/cam4.2581 (DOI)000490096700001 ()31568691 (PubMedID)
Funder
EU, FP7, Seventh Framework Programme, 291795Swedish Cancer Society, CAN2015/591Swedish Cancer Society, CAN2018/596Swedish Research Council, 2017-01658VinnovaStockholm County Council, 2017-0587
Available from: 2020-03-26 Created: 2020-03-26 Last updated: 2024-01-17Bibliographically approved
Gunnarsson, R., DiLorenzo, S., Lundin-Ström, K. B., Olsson, L., Biloglav, A., Lilljebjörn, H., . . . Johansson, B. (2018). Mutation, methylation, and gene expression profiles in dup(1q)-positive pediatric B-cell precursor acute lymphoblastic leukemia. Leukemia, 32(10), 2117-2125
Open this publication in new window or tab >>Mutation, methylation, and gene expression profiles in dup(1q)-positive pediatric B-cell precursor acute lymphoblastic leukemia
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2018 (English)In: Leukemia, ISSN 0887-6924, E-ISSN 1476-5551, Vol. 32, no 10, p. 2117-2125Article in journal (Refereed) Published
Abstract [en]

High-throughput sequencing was applied to investigate the mutation/methylation patterns on 1q and gene expression profiles in pediatric B-cell precursor acute lymphoblastic leukemia (BCP ALL) with/without (w/wo) dup(1q). Sequencing of the breakpoint regions and all exons on 1q in seven dup(1q)-positive cases revealed non-synonymous somatic single nucleotide variants (SNVs) in BLZF1, FMN2, KCNT2, LCE1C, NES, and PARP1. Deep sequencing of these in a validation cohort w (n = 17)/wo (n = 94) dup(1q) revealed similar SNV frequencies in the two groups (47% vs. 35%; P = 0.42). Only 0.6% of the 36,259 CpGs on 1q were differentially methylated between cases w (n = 14)/wo (n = 13) dup(1q). RNA sequencing of high hyperdiploid (HeH) and t(1;19)(q23;p13)-positive cases w (n = 14)/wo (n = 52) dup(1q) identified 252 and 424 differentially expressed genes, respectively; only seven overlapped. Of the overexpressed genes in the HeH and t(1;19) groups, 23 and 31%, respectively, mapped to 1q; 60-80% of these encode nucleic acid/protein binding factors or proteins with catalytic activity. We conclude that the pathogenetically important consequence of dup(1q) in BCP ALL is a gene-dosage effect, with the deregulated genes differing between genetic subtypes, but involving similar molecular functions, biological processes, and protein classes.

Place, publisher, year, edition, pages
Nature Publishing Group, 2018
National Category
Medical Genetics
Identifiers
urn:nbn:se:uu:diva-367402 (URN)10.1038/s41375-018-0092-2 (DOI)000446171800003 ()29626196 (PubMedID)
Funder
Swedish Research Council, 2016-01084Swedish Cancer Society, CAN 2017/291Swedish Childhood Cancer Foundation, PR2015-0006
Available from: 2018-12-03 Created: 2018-12-03 Last updated: 2018-12-03Bibliographically approved
Bersani, C., Sivars, L., Haeggblom, L., DiLorenzo, S., Mints, M., Ährlund-Richter, A., . . . Dalianis, T. (2017). Targeted sequencing of tonsillar and base of tongue cancer and human papillomavirus positive unknown primary of the head and neck reveals prognostic effects of mutated FGFR3. Oncotarget, 8(21), 35339-35350
Open this publication in new window or tab >>Targeted sequencing of tonsillar and base of tongue cancer and human papillomavirus positive unknown primary of the head and neck reveals prognostic effects of mutated FGFR3
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2017 (English)In: Oncotarget, E-ISSN 1949-2553, Vol. 8, no 21, p. 35339-35350Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Human papillomavirus positive (HPV+) tonsillar cancer (TSCC), base of tongue cancer (BOTSCC) and unknown primary cancer of the head and neck (HNCUP) have better outcome than corresponding HPV- cancers. To find predictive markers for response to treatment, and correlations and differences in mutated oncogenes and suppressor genes between HPV+ TSCC/BOTSSCC and HPV+ HNCUP and HPV- TSCC/BOTSCC targeted next-generation sequencing was performed of frequently mutated regions in 50 cancer related genes.

PATIENTS AND METHODS: DNA from 348 TSCC/BOTSCC and 20 HNCUP from patients diagnosed 2000-2011, was sequenced by the Ion Proton sequencing platform using the Ion AmpliSeq Cancer Hotspot Panel v2 to identify frequently mutated regions in 50 cancer related genes. Ion Torrent Variant Caller software was used to call variants.

RESULTS: 279 HPV+ TSCC/BOTSCC, 46 HPV- TSCC/BOTSCC and 19 HPV+ HNCUP samples qualified for further analysis. Mutations/tumor were fewer in HPV+ TSCC/BOTSCC and HNCUP, compared to HPV- tumors (0.92 vs. 1.32 vs. 1.68). Differences in mutation frequency of TP53 and PIK3CA were found between HPV+ TSCC/BOTSCC and HNCUP and HPV- TSCC/BOTSCC. In HPV+ TSCC/BOTSCC presence of FGFR3 mutations correlated to worse prognosis. Other correlations to survival within the groups were not disclosed.

CONCLUSIONS: In HPV+ TSCC/BOTSCC mutation of PIK3CA was most frequently observed, while TP53 mutations dominated in HPV- TSCC/BOTSCC. In HPV+ TSCC/ BOTSCC and HNCUP, mutations/tumor were similar in frequency and fewer compared to that in HPV- TSCC/BOTSCC. Notably, FGFR3 mutations in HPV+ TSCC/BOTSCC indicated worse prognosis.

Place, publisher, year, edition, pages
IMPACT JOURNALS LLC, 2017
Keywords
HPV, tonsillar cancer, base of tongue cancer, cancer of unknown primary of the head and neck region, FGFR3 mutation
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-326237 (URN)10.18632/oncotarget.15240 (DOI)000402051700117 ()28525363 (PubMedID)
Funder
Swedish Cancer SocietyCancer and Allergy FoundationStockholm County CouncilSwedish National Infrastructure for Computing (SNIC), b2015372
Available from: 2017-07-05 Created: 2017-07-05 Last updated: 2024-01-17Bibliographically approved
Mayrhofer, M., DiLorenzo, S. & Isaksson, A. (2013). Patchwork: allele-specific copy number analysis of whole-genome sequenced tumor tissue. Genome Biology, 14(3), R24
Open this publication in new window or tab >>Patchwork: allele-specific copy number analysis of whole-genome sequenced tumor tissue
2013 (English)In: Genome Biology, ISSN 1465-6906, E-ISSN 1474-760X, Vol. 14, no 3, p. R24-Article in journal (Refereed) Published
Abstract [en]

Whole-genome sequencing of tumor tissue has the potential to provide comprehensive characterization of genomic alterations in tumor samples. We present Patchwork, a new bioinformatic tool for allele-specific copy number analysis using whole-genome sequencing data. Patchwork can be used to determine the copy number of homologous sequences throughout the genome, even in aneuploid samples with moderate sequence coverage and tumor cell content. No prior knowledge of average ploidy or tumor cell content is required. Patchwork is freely available as an R package, installable via R-Forge (http://patchwork.r-forge.r-project.org/).

Keywords
Cancer, allele-specific copy number analysis, whole-genome sequencing, aneuploidy, tumor heterogeneity, chromothripsis
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-215306 (URN)10.1186/gb-2013-14-3-r24 (DOI)000328193700004 ()
Available from: 2014-01-13 Created: 2014-01-13 Last updated: 2017-12-06Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0002-9759-2211

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