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Shahrouzi P, Forouz F, Mathelier A, Kristensen VN, Duijf PHG. Copy number alterations: a catastrophic orchestration of the breast cancer genome. Trends Mol Med 2024; 30:750-764. [PMID: 38772764 DOI: 10.1016/j.molmed.2024.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/12/2024] [Accepted: 04/26/2024] [Indexed: 05/23/2024]
Abstract
Breast cancer (BCa) is a prevalent malignancy that predominantly affects women around the world. Somatic copy number alterations (CNAs) are tumor-specific amplifications or deletions of DNA segments that often drive BCa development and therapy resistance. Hence, the complex patterns of CNAs complement BCa classification systems. In addition, understanding the precise contributions of CNAs is essential for tailoring personalized treatment approaches. This review highlights how tumor evolution drives the acquisition of CNAs, which in turn shape the genomic landscapes of BCas. It also discusses advanced methodologies for identifying recurrent CNAs, studying CNAs in BCa and their clinical impact.
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Affiliation(s)
- Parastoo Shahrouzi
- Department of Medical Genetics, Institute of Basic Medical Science, Faculty of Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway.
| | - Farzaneh Forouz
- School of Pharmacy, University of Queensland, Woolloongabba, Brisbane, Australia
| | - Anthony Mathelier
- Centre for Molecular Medicine Norway (NCMM), Nordic EMBL Partnership, University of Oslo, 0318 Oslo, Norway; Center for Bioinformatics, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway; Department of Medical Genetics, Institute of Clinical Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Vessela N Kristensen
- Department of Medical Genetics, Institute of Clinical Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway; Division of Medicine, Department of Clinical Molecular Biology and Laboratory Science (EpiGen), Akershus University Hospital, Lørenskog, Norway; Department of Cancer Genetics, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Pascal H G Duijf
- Department of Medical Genetics, Institute of Clinical Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway; Centre for Cancer Biology, UniSA Clinical and Health Sciences, University of South Australia and SA Pathology, Adelaide, Australia.
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2
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Zhang Z, Ye S, Bernhardt SM, Nelson HD, Velie EM, Borges VF, Woodward ER, Evans DGR, Schedin PJ. Postpartum Breast Cancer and Survival in Women With Germline BRCA Pathogenic Variants. JAMA Netw Open 2024; 7:e247421. [PMID: 38639936 PMCID: PMC11031688 DOI: 10.1001/jamanetworkopen.2024.7421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/18/2024] [Indexed: 04/20/2024] Open
Abstract
Importance In young-onset breast cancer (YOBC), a diagnosis within 5 to 10 years of childbirth is associated with increased mortality. Women with germline BRCA1/2 pathogenic variants (PVs) are more likely to be diagnosed with BC at younger ages, but the impact of childbirth on mortality is unknown. Objective To determine whether time between most recent childbirth and BC diagnosis is associated with mortality among patients with YOBC and germline BRCA1/2 PVs. Design, Setting, and Participants This prospective cohort study included women with germline BRCA1/2 PVs diagnosed with stage I to III BC at age 45 years or younger between 1950 and 2021 in the United Kingdom, who were followed up until November 2021. Data were analyzed from December 3, 2021, to November 29, 2023. Exposure Time between most recent childbirth and subsequent BC diagnosis, with recent childbirth defined as 0 to less than 10 years, further delineated to 0 to less than 5 years and 5 to less than 10 years. Main Outcomes and Measures The primary outcome was all-cause mortality, censored at 20 years after YOBC diagnosis. Mortality of nulliparous women was compared with the recent post partum groups and the 10 or more years post partum group. Cox proportional hazards regression analyses were adjusted for age, tumor stage, and further stratified by tumor estrogen receptor (ER) and BRCA gene status. Results Among 903 women with BRCA PVs (mean [SD] age at diagnosis, 34.7 [6.1] years; mean [SD] follow-up, 10.8 [9.8] years), 419 received a BC diagnosis 0 to less than 10 years after childbirth, including 228 women diagnosed less than 5 years after childbirth and 191 women diagnosed 5 to less than 10 years after childbirth. Increased all-cause mortality was observed in women diagnosed within 5 to less than 10 years post partum (hazard ratio [HR], 1.56 [95% CI, 1.05-2.30]) compared with nulliparous women and women diagnosed 10 or more years after childbirth, suggesting a transient duration of postpartum risk. Risk of mortality was greater for women with ER-positive BC in the less than 5 years post partum group (HR, 2.35 [95% CI, 1.02-5.42]) and ER-negative BC in the 5 to less than 10 years post partum group (HR, 3.12 [95% CI, 1.22-7.97]) compared with the nulliparous group. Delineated by BRCA1 or BRCA2, mortality in the 5 to less than 10 years post partum group was significantly increased, but only for BRCA1 carriers (HR, 2.03 [95% CI, 1.15-3.58]). Conclusions and Relevance These findings suggest that YOBC with germline BRCA PVs was associated with increased risk for all-cause mortality if diagnosed within 10 years after last childbirth, with risk highest for ER-positive BC diagnosed less than 5 years post partum, and for ER-negative BC diagnosed 5 to less than 10 years post partum. BRCA1 carriers were at highest risk for poor prognosis when diagnosed at 5 to less than 10 years post partum. No such associations were observed for BRCA2 carriers. These results should inform genetic counseling, prevention, and treatment strategies for BRCA PV carriers.
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Affiliation(s)
- Zhenzhen Zhang
- Division of Oncological Sciences, Oregon Health & Science University, Portland
- Knight Cancer Institute, Oregon Health & Science University, Portland
| | - Shangyuan Ye
- Biostatistics Shared Resource, Knight Cancer Institute, Oregon Health & Science University, Portland
| | - Sarah M. Bernhardt
- Department of Cell, Developmental & Cancer Biology, Oregon Health & Science University, Portland
| | - Heidi D. Nelson
- Kaiser Permanente Bernard D. Tyson School of Medicine, Pasadena, California
| | - Ellen M. Velie
- Zilber College of Public Health, University of Wisconsin-Milwaukee, Milwaukee
- Departments of Medicine and Pathology, Medical College of Wisconsin, Milwaukee
| | - Virginia F. Borges
- Young Women’s Breast Cancer Translational Program, Division of Medical Oncology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora
| | - Emma R. Woodward
- Manchester Centre for Genomic Medicine, Manchester Academic Health Sciences Centre, Division of Evolution Infection and Genomic Science, St Mary’s Hospital, University of Manchester, Manchester, United Kingdom
- Prevent Breast Cancer Centre, University Hospital of South Manchester NHS Trust, Wythenshawe, Manchester, United Kingdom
- Manchester Centre for Genomic Medicine, St Mary’s Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
- Manchester Breast Centre, University of Manchester, Manchester, United Kingdom
| | - D. Gareth R. Evans
- Manchester Centre for Genomic Medicine, Manchester Academic Health Sciences Centre, Division of Evolution Infection and Genomic Science, St Mary’s Hospital, University of Manchester, Manchester, United Kingdom
- Prevent Breast Cancer Centre, University Hospital of South Manchester NHS Trust, Wythenshawe, Manchester, United Kingdom
- Manchester Centre for Genomic Medicine, St Mary’s Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
- Manchester Breast Centre, University of Manchester, Manchester, United Kingdom
| | - Pepper J. Schedin
- Knight Cancer Institute, Oregon Health & Science University, Portland
- Department of Cell, Developmental & Cancer Biology, Oregon Health & Science University, Portland
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Zeng J, Singh S, Zhou X, Jiang Y, Casarez E, Atkins KA, Janes KA, Zong H. A genetic mosaic mouse model illuminates the pre-malignant progression of basal-like breast cancer. Dis Model Mech 2023; 16:dmm050219. [PMID: 37815460 PMCID: PMC10668031 DOI: 10.1242/dmm.050219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 09/11/2023] [Indexed: 10/11/2023] Open
Abstract
Basal-like breast cancer (BLBC) is highly aggressive, and often characterized by BRCA1 and p53 deficiency. Although conventional mouse models enabled the investigation of BLBC at malignant stages, its initiation and pre-malignant progression remain understudied. Here, we leveraged a mouse genetic system known as mosaic analysis with double markers (MADM) to study BLBC initiation by generating rare GFP+Brca1, p53-deficient mammary cells alongside RFP+ wild-type sibling cells. After confirming the close resemblance of mammary tumors arising in this model to human BLBC at both transcriptomic and genomic levels, we focused our studies on the pre-malignant progression of BLBC. Initiated GFP+ mutant cells showed a stepwise pre-malignant progression trajectory from focal expansion to hyper-alveolarization and then to micro-invasion. Furthermore, despite morphological similarities to alveoli, hyper-alveolarized structures actually originate from ductal cells based on twin-spot analysis of GFP-RFP sibling cells. Finally, luminal-to-basal transition occurred exclusively in cells that have progressed to micro-invasive lesions. Our MADM model provides excellent spatiotemporal resolution to illuminate the pre-malignant progression of BLBC, and should enable future studies on early detection and prevention for this cancer.
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Affiliation(s)
- Jianhao Zeng
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Shambhavi Singh
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Xian Zhou
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Ying Jiang
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Eli Casarez
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Kristen A. Atkins
- Department of Pathology, University of Virginia Health System, Charlottesville, VA 22908, USA
- University of Virginia Comprehensive Cancer Center, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Kevin A. Janes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
- University of Virginia Comprehensive Cancer Center, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Hui Zong
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
- University of Virginia Comprehensive Cancer Center, University of Virginia Health System, Charlottesville, VA 22908, USA
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Vinod N, Hwang D, Fussell SC, Owens TC, Tofade OC, Copling S, Ramsey JD, Rädler PD, Atkins HM, Livingston EE, Ezzell JA, Sokolsky-Papkov M, Yuan H, Perou CM, Kabanov AV. Combination of Polymeric Micelle Formulation of TGFβ Receptor Inhibitors and Paclitaxel Produce Consistent Response Across Different Mouse Models of TNBC. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.14.544381. [PMID: 37398150 PMCID: PMC10312717 DOI: 10.1101/2023.06.14.544381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Triple-negative breast cancer (TNBC) is notoriously difficult to treat due to the lack of targetable receptors and sometimes poor response to chemotherapy. The transforming growth factor-beta (TGFβ) family of proteins and their receptors (TGFR) are highly expressed in TNBC and implicated in chemotherapy-induced cancer stemness. Here we evaluated combination treatments using experimental TGFR inhibitors (TGFβi), SB525334 (SB), and LY2109761 (LY) with Paclitaxel (PTX) chemotherapy. These TGFβi target TGFR-I (SB) or both TGFR-I&II (LY). Due to the poor water solubility of these drugs, we incorporated each of them in poly(2-oxazoline) (POx) high-capacity polymeric micelles (SB-POx and LY-POx). We assessed their anti-cancer effect as single agents and in combination with micellar Paclitaxel (PTX-POx) using multiple immunocompetent TNBC mouse models that mimic human subtypes (4T1, T11-Apobec and T11-UV). While either TGFβi or PTX showed a differential effect in each model as single agents, the combinations were consistently effective against all three models. Genetic profiling of the tumors revealed differences in the expression levels of genes associated with TGFβ, EMT, TLR-4, and Bcl2 signaling, alluding to the susceptibility to specific gene signatures to the treatment. Taken together, our study suggests that TGFβi and PTX combination therapy using high-capacity POx micelle delivery provides a robust anti-tumor response in multiple TNBC subtype mouse models.
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Affiliation(s)
- Natasha Vinod
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
- Joint UNC/NC State Department of Biomedical Engineering, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Duhyeong Hwang
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Sloane Christian Fussell
- Department of Biology, Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Tyler Cannon Owens
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Olaoluwa Christopher Tofade
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Sage Copling
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Jacob D. Ramsey
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Patrick D. Rädler
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, United States
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27514, United States
| | - Hannah M. Atkins
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, United States
- Pathology and Laboratory Medicine, School of Medicine, University of North Carolina, Chapel Hill, NC 27599, United States
- Department of Pathology and Laboratory Medicine, Division of Comparative Medicine, University of North Carolina, Chapel Hill, NC, 27599, USA
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27695, USA
| | - Eric E. Livingston
- Biomedical Research Imaging Center, Department of Radiology, and UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - J. Ashley Ezzell
- Histology Research Core, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Marina Sokolsky-Papkov
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Hong Yuan
- Biomedical Research Imaging Center, Department of Radiology, and UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Charles M. Perou
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, United States
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27514, United States
| | - Alexander V. Kabanov
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
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Shi Z, Chen B, Han X, Gu W, Liang S, Wu L. Genomic and molecular landscape of homologous recombination deficiency across multiple cancer types. Sci Rep 2023; 13:8899. [PMID: 37264024 DOI: 10.1038/s41598-023-35092-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 05/12/2023] [Indexed: 06/03/2023] Open
Abstract
Homologous recombination deficiency (HRD) causes faulty double-strand break repair and is a prevalent cause of tumorigenesis. However, the incidence of HRD and its clinical significance in pan-cancer patients remain unknown. Using computational analysis of Single-nucleotide polymorphism array data from 10,619 cancer patients, we demonstrate that HRD frequently occurs across multiple cancer types. Analysis of the pan-cancer cohort revealed that HRD is not only a biomarker for ovarian cancer and triple-negative breast cancer, but also has clinical prognostic value in numerous cancer types, including adrenocortical cancer and thymoma. We discovered that homologous recombination-related genes have a high mutation or deletion frequency. Pathway analysis shows HRD is positively correlated with the DNA damage response and the immune-related signaling pathways. Single cell RNA sequencing of tumor-infiltrating lymphocytes reveals a significantly higher proportion of exhausted T cells in HRD patients, indicating pre-existing immunity. Finally, HRD could be utilized to predict pan-cancer patients' responses to Programmed cell death protein 1 immunotherapy. In summary, our work establishes a comprehensive map of HRD in pan-cancer. The findings have significant implications for expanding the scope of Poly ADP-ribose polymerase inhibitor therapy and, possibly, immunotherapy.
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Affiliation(s)
- Zhiwen Shi
- Department of Translational Medicine Center, Chigene (Beijing) Translational Medical Research Center Co., Beijing, 100176, China
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation, Shanghai Institute of Planned Parenthood Research, State Key Laboratory of Genetic Engineering at School of Life Sciences, Institute of Reproduction and Development, Fudan University, Shanghai, 200032, China
| | - Bolin Chen
- Department of Thoracic Medical Oncology,Hunan Cancer Hospital/the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410000, China
| | - Xiao Han
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation, Shanghai Institute of Planned Parenthood Research, State Key Laboratory of Genetic Engineering at School of Life Sciences, Institute of Reproduction and Development, Fudan University, Shanghai, 200032, China
| | - Weiyue Gu
- Department of Translational Medicine Center, Chigene (Beijing) Translational Medical Research Center Co., Beijing, 100176, China
| | - Shuzhi Liang
- Department of Thoracic Medical Oncology,Hunan Cancer Hospital/the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410000, China
| | - Lin Wu
- Department of Thoracic Medical Oncology,Hunan Cancer Hospital/the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410000, China.
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Zeng J, Singh S, Jiang Y, Casarez E, Atkins KA, Janes KA, Zong H. A genetic mosaic mouse model illuminates the pre-malignant progression of basal-like breast cancer. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.25.538333. [PMID: 37163037 PMCID: PMC10168298 DOI: 10.1101/2023.04.25.538333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Basal-like breast cancer is an aggressive breast cancer subtype, often characterized by a deficiency in BRCA1 function and concomitant loss of p53 . While conventional mouse models enable the investigation of its malignant stages, one that reveals its initiation and pre-malignant progression is lacking. Here, we leveraged a mouse genetic system known as M osaic A nalysis with D ouble M arkers (MADM) to generate rare GFP-labeled Brca1 , p53 -deficient cells alongside RFP+ wildtype sibling cells in the mammary gland. The mosaicism resembles the sporadic initiation of human cancer and enables spatially resolved analysis of mutant cells in comparison to paired wildtype sibling cells. Mammary tumors arising in the model show transcriptomic and genomic characteristics similar to human basal-like breast cancer. Analysis of GFP+ mutant cells at interval time points before malignancy revealed a stepwise progression of lesions from focal expansion to hyper-alveolarization and then to micro-invasion. These stereotyped morphologies indicate the pre-malignant stage irrespective of the time point at which it is observed. Paired analysis of GFP-RFP siblings during focal expansion suggested that hyper-alveolarized structures originate from ductal rather than alveolar cells, despite their morphological similarities to alveoli. Evidence for luminal-to-basal transition at the pre-malignant stages was restricted to cells that had escaped hyper-alveoli and progressed to micro-invasive lesions. Our MADM-based mouse model presents a useful tool for studying the pre-malignancy of basal-like breast cancer. Summary statement A mouse model recapitulates the process of human basal-like breast tumorigenesis initiated from sporadic Brca1, p53 -deficient cells, empowering spatially-resolved analysis of mutant cells during pre-malignant progression.
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McClure MB, Kogure Y, Ansari-Pour N, Saito Y, Chao HH, Shepherd J, Tabata M, Olopade OI, Wedge DC, Hoadley KA, Perou CM, Kataoka K. Landscape of Genetic Alterations Underlying Hallmark Signature Changes in Cancer Reveals TP53 Aneuploidy-driven Metabolic Reprogramming. CANCER RESEARCH COMMUNICATIONS 2023; 3:281-296. [PMID: 36860655 PMCID: PMC9973382 DOI: 10.1158/2767-9764.crc-22-0073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 10/08/2022] [Accepted: 01/20/2023] [Indexed: 02/04/2023]
Abstract
The hallmark signatures based on gene expression capture core cancer processes. Through a pan-cancer analysis, we describe the overview of hallmark signatures across tumor types/subtypes and reveal significant relationships between these signatures and genetic alterations. TP53 mutation exerts diverse changes, including increased proliferation and glycolysis, which are closely mimicked by widespread copy-number alterations. Hallmark signature and copy-number clustering identify a cluster of squamous tumors and basal-like breast and bladder cancers with elevated proliferation signatures, frequent TP53 mutation, and high aneuploidy. In these basal-like/squamous TP53-mutated tumors, a specific and consistent spectrum of copy-number alterations is preferentially selected prior to whole-genome duplication. Within Trp53-null breast cancer mouse models, these copy-number alterations spontaneously occur and recapitulate the hallmark signature changes observed in the human condition. Together, our analysis reveals intertumor and intratumor heterogeneity of the hallmark signatures, uncovering an oncogenic program induced by TP53 mutation and select aneuploidy events to drive a worsened prognosis. Significance Our data demonstrate that TP53 mutation and a resultant selected pattern of aneuploidies cause an aggressive transcriptional program including upregulation of glycolysis signature with prognostic implications. Importantly, basal-like breast cancer demonstrates genetic and/or phenotypic changes closely related to squamous tumors including 5q deletion that reveal alterations that could offer therapeutic options across tumor types regardless of tissue of origin.
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Affiliation(s)
- Marni B. McClure
- Division of Molecular Oncology, National Cancer Center Research Institute, Tokyo, Japan
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Yasunori Kogure
- Division of Molecular Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Naser Ansari-Pour
- MRC Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Yuki Saito
- Division of Molecular Oncology, National Cancer Center Research Institute, Tokyo, Japan
- Department of Gastroenterology, Keio University School of Medicine, Tokyo, Japan
| | - Hann-Hsiang Chao
- Department of Radiation Oncology, Richmond VA Medical Center, Richmond, Virginia
- Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia
| | - Jonathan Shepherd
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Mariko Tabata
- Division of Molecular Oncology, National Cancer Center Research Institute, Tokyo, Japan
- Department of Urology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Olufunmilayo I. Olopade
- Center for Clinical Cancer Genetics & Global Health, University of Chicago School of Medicine, The University of Chicago, Chicago, Illinois
| | - David C. Wedge
- Manchester Cancer Research Centre, University of Manchester, Manchester, United Kingdom
| | - Katherine A. Hoadley
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Charles M. Perou
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Keisuke Kataoka
- Division of Molecular Oncology, National Cancer Center Research Institute, Tokyo, Japan
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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Szabova L, Gordon MB, Lu L, Pate N, Bassel L, Iacovelli AJ, Karim B, Homan PJ, Householder DB, Guerin TM, Burkett S, Day AM, Custer W, Weaver Ohler Z. Loss of Brca1 and Trp53 in adult mouse mammary ductal epithelium results in development of hormone receptor-positive or hormone receptor-negative tumors, depending on inactivation of Rb family proteins. Breast Cancer Res 2022; 24:75. [PMID: 36333737 PMCID: PMC9636824 DOI: 10.1186/s13058-022-01566-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 10/08/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Breast cancer is a heterogenous disease with several histological and molecular subtypes. Models that represent these subtypes are essential for translational research aimed at improving clinical strategy for targeted therapeutics. METHODS Different combinations of genetic aberrations (Brca1 and Trp53 loss, and inhibition of proteins of the Rb family) were induced in the mammary gland by injection of adenovirus expressing Cre recombinase into the mammary ducts of adult genetically engineered mice. Mammary tumors with different genetic aberrations were classified into molecular subtypes based on expression of molecular markers and RNAseq analysis. In vitro potency assays and Western blots were used to examine their drug sensitivities. RESULTS Induction of Brca1 and Trp53 loss in mammary ductal epithelium resulted in development of basal-like hormone receptor (HR)-negative mammary tumors. Inhibition of Rb and Trp53 loss or the combination of Rb, Trp53 and Brca1 aberrations resulted in development of luminal ductal carcinoma positive for ER, PR, and Her2 expression. HR positivity in tumors with Rb, Trp53 and Brca1 aberrations indicated that functionality of the Rb pathway rather than Brca1 status affected HR status in these models. Mammary tumor gene expression profiles recapitulated human basal-like or luminal B breast cancer signatures, but HR-positive luminal cancer models were endocrine resistant and exhibited upregulation of PI3K signaling and sensitivity to this pathway inhibition. Furthermore, both tumor subtypes were resistant to CDK4/6 inhibition. CONCLUSIONS Examination of molecular expression profiles and drug sensitivities of tumors indicate that these breast cancer models can be utilized as a translational platform for evaluation of targeted combinations to improve chemotherapeutic response in patients that no longer respond to hormone therapy or that are resistant to CDK4/6 inhibition.
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Affiliation(s)
- Ludmila Szabova
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA.
| | - Melanie B Gordon
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Lucy Lu
- Center for Advanced Preclinical Research, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Nathan Pate
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
- Sanofi,Global Discovery Pathology, Translational In Vivo Models Platform, Framingham, MA, USA
| | - Laura Bassel
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Anthony J Iacovelli
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
- Genentech, Inc., South San Francisco, CA, USA
| | - Baktiar Karim
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
- Molecular Histopathology Laboratory, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Philip J Homan
- CCR Collaborative Bioinformatics Resource, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Deborah B Householder
- Center for Advanced Preclinical Research, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Theresa M Guerin
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Sandra Burkett
- Molecular Cytogenetics Core Facility, Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Amanda M Day
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Wendi Custer
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Zoe Weaver Ohler
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA.
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Poly(ADP) ribose polymerase promotes DNA polymerase theta-mediated end joining by activation of end resection. Nat Commun 2022; 13:4547. [PMID: 35927262 PMCID: PMC9352658 DOI: 10.1038/s41467-022-32166-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 07/18/2022] [Indexed: 11/29/2022] Open
Abstract
The DNA polymerase theta (Polθ)-mediated end joining (TMEJ) pathway for repair of chromosomal double strand breaks (DSBs) is essential in cells deficient in other DSB repair pathways, including hereditary breast cancers defective in homologous recombination. Strand-break activated poly(ADP) ribose polymerase 1 (PARP1) has been implicated in TMEJ, but the modest specificity of existing TMEJ assays means the extent of effect and the mechanism behind it remain unclear. We describe here a series of TMEJ assays with improved specificity and show ablation of PARP activity reduces TMEJ activity 2-4-fold. The reduction in TMEJ is attributable to a reduction in the 5’ to 3’ resection of DSB ends that is essential for engagement of this pathway and is compensated by increased repair by the nonhomologous-end joining pathway. This limited role for PARP activity in TMEJ helps better rationalize the combined employment of inhibitors of PARP and Polθ in cancer therapy. Poly(ADP) ribose polymerase (PARP) activity promotes, but is not required for, chromosome break repair by polymerase theta-mediated end joining (TMEJ). PARP activity promotes TMEJ by stimulating resection, a process that controls pathway choice.
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10
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Morrissey RL, Thompson AM, Lozano G. Is loss of p53 a driver of ductal carcinoma in situ progression? Br J Cancer 2022; 127:1744-1754. [PMID: 35764786 DOI: 10.1038/s41416-022-01885-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 05/17/2022] [Accepted: 06/01/2022] [Indexed: 11/09/2022] Open
Abstract
Ductal carcinoma in situ (DCIS) is a non-obligate precursor of invasive carcinoma. Multiple studies have shown that DCIS lesions typically possess a driver mutation associated with cancer development. Mutation in the TP53 tumour suppressor gene is present in 15-30% of pure DCIS lesions and in ~30% of invasive breast cancers. Mutations in TP53 are significantly associated with high-grade DCIS, the most likely form of DCIS to progress to invasive carcinoma. In this review, we summarise published evidence on the prevalence of mutant TP53 in DCIS (including all DCIS subtypes), discuss the availability of mouse models for the study of DCIS and highlight the need for functional studies of the role of TP53 in the development of DCIS and progression from DCIS to invasive disease.
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Affiliation(s)
- Rhiannon L Morrissey
- Genetics and Epigenetics Program at The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA.,Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Alastair M Thompson
- Division of Surgical Oncology, Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Guillermina Lozano
- Genetics and Epigenetics Program at The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA. .,Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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11
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Loss of function of BRCA1 promotes EMT in mammary tumors through activation of TGFβR2 signaling pathway. Cell Death Dis 2022; 13:195. [PMID: 35236825 PMCID: PMC8891277 DOI: 10.1038/s41419-022-04646-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 01/25/2022] [Accepted: 02/09/2022] [Indexed: 12/15/2022]
Abstract
BRCA1 deficient breast cancers are aggressive and chemoresistant due, in part, to their enrichment of cancer stem cells that can be generated from carcinoma cells by an epithelial-mesenchymal transition (EMT). We previously discovered that BRCA1 deficiency activates EMT in mammary tumorigenesis. How BRCA1 controls EMT and how to effectively target BRCA1-deficient cancers remain elusive. We analyzed murine and human tumors and identified a role for Tgfβr2 in governing the molecular aspects of EMT that occur with Brca1 loss. We utilized CRISPR to delete Tgfβr2 and specific inhibitors to block Tgfβr2 activity and followed up with the molecular analysis of assays for tumor growth and metastasis. We discovered that heterozygous germline deletion, or epithelia-specific deletion of Brca1 in mice, activates Tgfβr2 signaling pathways in mammary tumors. BRCA1 depletion promotes TGFβ-mediated EMT activation in cancer cells. BRCA1 binds to the TGFβR2 locus to repress its transcription. Targeted deletion or pharmaceutical inhibition of Tgfβr2 in Brca1-deficient tumor cells reduces EMT and suppresses tumorigenesis and metastasis. BRCA1 and TGFβR2 expression levels are inversely related in human breast cancers. This study reveals for the first time that a targetable TGFβR signaling pathway is directly activated by BRCA1-deficiency in the induction of EMT in breast cancer progression.
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12
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When breaks get hot: inflammatory signaling in BRCA1/2-mutant cancers. Trends Cancer 2022; 8:174-189. [PMID: 35000881 DOI: 10.1016/j.trecan.2021.12.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 12/24/2022]
Abstract
Genomic instability and inflammation are intricately connected hallmark features of cancer. DNA repair defects due to BRCA1/2 mutation instigate immune signaling through the cGAS/STING pathway. The subsequent inflammatory signaling provides both tumor-suppressive as well as tumor-promoting traits. To prevent clearance by the immune system, genomically instable cancer cells need to adapt to escape immune surveillance. Currently, it is unclear how genomically unstable cancers, including BRCA1/2-mutant tumors, are rewired to escape immune clearance. Here, we summarize the mechanisms by which genomic instability triggers inflammatory signaling and describe adaptive mechanisms by which cancer cells can 'fly under the radar' of the immune system. Additionally, we discuss how therapeutic activation of the immune system may improve treatment of genomically instable cancers.
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13
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Lai SCA, Gundlapalli H, Ekiz HA, Jiang A, Fernandez E, Welm AL. Blocking Short-Form Ron Eliminates Breast Cancer Metastases through Accumulation of Stem-Like CD4+ T Cells That Subvert Immunosuppression. Cancer Discov 2021; 11:3178-3197. [PMID: 34330779 PMCID: PMC8800951 DOI: 10.1158/2159-8290.cd-20-1172] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 04/26/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022]
Abstract
Immunotherapy has potential to prevent and treat metastatic breast cancer, but strategies to enhance immune-mediated killing of metastatic tumors are urgently needed. We report that a ligand-independent isoform of Ron kinase (SF-Ron) is a key target to enhance immune infiltration and eradicate metastatic tumors. Host-specific deletion of SF-Ron caused recruitment of lymphocytes to micrometastases, augmented tumor-specific T-cell responses, and nearly eliminated breast cancer metastasis in mice. Lack of host SF-Ron caused stem-like TCF1+ CD4+ T cells with type I differentiation potential to accumulate in metastases and prevent metastatic outgrowth. There was a corresponding increase in tumor-specific CD8+ T cells, which were also required to eliminate lung metastases. Treatment of mice with a Ron kinase inhibitor increased tumor-specific CD8+ T cells and protected from metastatic outgrowth. These data provide a strong preclinical rationale to pursue small-molecule Ron kinase inhibitors for the prevention and treatment of metastatic breast cancer. SIGNIFICANCE The discovery that SF-Ron promotes antitumor immune responses has significant clinical implications. Therapeutic antibodies targeting full-length Ron may not be effective for immunotherapy; poor efficacy of such antibodies in trials may be due to their inability to block SF-Ron. Our data warrant trials with inhibitors targeting SF-Ron in combination with immunotherapy. This article is highlighted in the In This Issue feature, p. 2945.
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Affiliation(s)
- Shu-Chin Alicia Lai
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
| | - Harika Gundlapalli
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
| | - H. Atakan Ekiz
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
| | - Amanda Jiang
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
| | - Elvelyn Fernandez
- Genomics Summer Research for Minorities (GSRM) Program, University of Utah, Salt Lake City, Utah
| | - Alana L. Welm
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah.,Corresponding Author: Alana L. Welm, University of Utah, 2000 Circle of Hope, Room 2515, Salt Lake City, UT 84112. Phone: 801-587-4622; E-mail:
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14
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Aziz D, Portman N, Fernandez KJ, Lee C, Alexandrou S, Llop-Guevara A, Phan Z, Yong A, Wilkinson A, Sergio CM, Ferraro D, Etemadmoghadam D, Bowtell DD, Serra V, Waring P, Lim E, Caldon CE. Synergistic targeting of BRCA1 mutated breast cancers with PARP and CDK2 inhibition. NPJ Breast Cancer 2021; 7:111. [PMID: 34465787 PMCID: PMC8408175 DOI: 10.1038/s41523-021-00312-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 07/28/2021] [Indexed: 12/18/2022] Open
Abstract
Basal-like breast cancers (BLBC) are aggressive breast cancers that respond poorly to targeted therapies and chemotherapies. In order to define therapeutically targetable subsets of BLBC we examined two markers: cyclin E1 and BRCA1 loss. In high grade serous ovarian cancer (HGSOC) these markers are mutually exclusive, and define therapeutic subsets. We tested the same hypothesis for BLBC. Using a BLBC cohort enriched for BRCA1 loss, we identified convergence between BRCA1 loss and high cyclin E1 protein expression, in contrast to HGSOC in which CCNE1 amplification drives increased cyclin E1. In cell lines, BRCA1 loss was associated with stabilized cyclin E1 during the cell cycle, and BRCA1 siRNA led to increased cyclin E1 in association with reduced phospho-cyclin E1 T62. Mutation of cyclin E1 T62 to alanine increased cyclin E1 stability. We showed that tumors with high cyclin E1/BRCA1 mutation in the BLBC cohort also had decreased phospho-T62, supporting this hypothesis. Since cyclin E1/CDK2 protects cells from DNA damage and cyclin E1 is elevated in BRCA1 mutant cancers, we hypothesized that CDK2 inhibition would sensitize these cancers to PARP inhibition. CDK2 inhibition induced DNA damage and synergized with PARP inhibitors to reduce cell viability in cell lines with homologous recombination deficiency, including BRCA1 mutated cell lines. Treatment of BRCA1 mutant BLBC patient-derived xenograft models with combination PARP and CDK2 inhibition led to tumor regression and increased survival. We conclude that BRCA1 status and high cyclin E1 have potential as predictive biomarkers to dictate the therapeutic use of combination CDK inhibitors/PARP inhibitors in BLBC.
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Affiliation(s)
- Diar Aziz
- Centre for Translational Pathology, Department of Pathology and Department of Surgery, University of Melbourne, Parkville, VIC, Australia
- Peter MacCallum Cancer Institute, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia
- Department of Surgery, University of Melbourne, Parkville, VIC, Australia
- Pathology Department, College of Medicine, University of Mosul, Mosul, Iraq
| | - Neil Portman
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
- St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, NSW, Australia
| | - Kristine J Fernandez
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Christine Lee
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Sarah Alexandrou
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Alba Llop-Guevara
- Experimental Therapeutics Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Zoe Phan
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Aliza Yong
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Ashleigh Wilkinson
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - C Marcelo Sergio
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Danielle Ferraro
- Centre for Translational Pathology, Department of Pathology and Department of Surgery, University of Melbourne, Parkville, VIC, Australia
- Department of Surgery, University of Melbourne, Parkville, VIC, Australia
| | - Dariush Etemadmoghadam
- Peter MacCallum Cancer Institute, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia
| | - David D Bowtell
- Peter MacCallum Cancer Institute, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia
| | - Violeta Serra
- Experimental Therapeutics Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Paul Waring
- Centre for Translational Pathology, Department of Pathology and Department of Surgery, University of Melbourne, Parkville, VIC, Australia
- Department of Surgery, University of Melbourne, Parkville, VIC, Australia
| | - Elgene Lim
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
- St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, NSW, Australia
| | - C Elizabeth Caldon
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia.
- St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, NSW, Australia.
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15
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Regua AT, Arrigo A, Doheny D, Wong GL, Lo HW. Transgenic mouse models of breast cancer. Cancer Lett 2021; 516:73-83. [PMID: 34090924 DOI: 10.1016/j.canlet.2021.05.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 05/23/2021] [Accepted: 05/25/2021] [Indexed: 11/26/2022]
Abstract
Transgenic breast cancer mouse models are critical tools for preclinical studies of human breast cancer. Genetic editing of the murine mammary gland allows for modeling of abnormal genetic events frequently found in human breast cancers. Genetically engineered mouse models (GEMMs) of breast cancer employ tissue-specific genetic manipulation for tumorigenic induction within the mammary tissue. Under the transcriptional control of mammary-specific promoters, transgenic mouse models can simulate spontaneous mammary tumorigenesis by expressing one or more putative oncogenes, such as MYC, HRAS, and PIK3CA. Alternatively, the Cre-Lox system allows for tissue-specific deletion of tumor suppressors, such as p53, Rb1, and Brca1, or specific knock-in of putative oncogenes. Thus, GEMMs can be designed to implement one or more genetic events to induce mammary tumorigenesis. Features of GEMMs, such as age of transgene expression, breeding quality, tumor latency, histopathological characteristics, and propensity for local and distant metastasis, are variable and strain-dependent. This review aims to summarize currently available transgenic breast cancer mouse models that undergo spontaneous mammary tumorigenesis upon genetic manipulation, their varying characteristics, and their individual genetic manipulations that model aberrant signaling events observed in human breast cancers.
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Affiliation(s)
- Angelina T Regua
- Department of Cancer Biology, Wake Forest University School of Medicine, 1 Medical Center Blvd., Winston-Salem, NC, USA.
| | - Austin Arrigo
- Department of Cancer Biology, Wake Forest University School of Medicine, 1 Medical Center Blvd., Winston-Salem, NC, USA.
| | - Daniel Doheny
- Department of Cancer Biology, Wake Forest University School of Medicine, 1 Medical Center Blvd., Winston-Salem, NC, USA.
| | - Grace L Wong
- Department of Cancer Biology, Wake Forest University School of Medicine, 1 Medical Center Blvd., Winston-Salem, NC, USA.
| | - Hui-Wen Lo
- Department of Cancer Biology, Wake Forest University School of Medicine, 1 Medical Center Blvd., Winston-Salem, NC, USA; Breast Cancer Center of Excellence, Wake Forest University School of Medicine, 1 Medical Center Blvd., Winston-Salem, NC, USA; Wake Forest Baptist Comprehensive Cancer Center, Wake Forest University School of Medicine, 1 Medical Center Blvd., Winston-Salem, NC, USA.
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16
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Hollern DP, Xu N, Thennavan A, Glodowski C, Garcia-Recio S, Mott KR, He X, Garay JP, Carey-Ewend K, Marron D, Ford J, Liu S, Vick SC, Martin M, Parker JS, Vincent BG, Serody JS, Perou CM. B Cells and T Follicular Helper Cells Mediate Response to Checkpoint Inhibitors in High Mutation Burden Mouse Models of Breast Cancer. Cell 2020; 179:1191-1206.e21. [PMID: 31730857 DOI: 10.1016/j.cell.2019.10.028] [Citation(s) in RCA: 276] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 09/12/2019] [Accepted: 10/23/2019] [Indexed: 12/28/2022]
Abstract
This study identifies mechanisms mediating responses to immune checkpoint inhibitors using mouse models of triple-negative breast cancer. By creating new mammary tumor models, we find that tumor mutation burden and specific immune cells are associated with response. Further, we developed a rich resource of single-cell RNA-seq and bulk mRNA-seq data of immunotherapy-treated and non-treated tumors from sensitive and resistant murine models. Using this, we uncover that immune checkpoint therapy induces T follicular helper cell activation of B cells to facilitate the anti-tumor response in these models. We also show that B cell activation of T cells and the generation of antibody are key to immunotherapy response and propose a new biomarker for immune checkpoint therapy. In total, this work presents resources of new preclinical models of breast cancer with large mRNA-seq and single-cell RNA-seq datasets annotated for sensitivity to therapy and uncovers new components of response to immune checkpoint inhibitors.
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Affiliation(s)
- Daniel P Hollern
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Nuo Xu
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Aatish Thennavan
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA; Oral and Craniofacial Biomedicine Program, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - Cherise Glodowski
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Susana Garcia-Recio
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Kevin R Mott
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Xiaping He
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Joseph P Garay
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Kelly Carey-Ewend
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - David Marron
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - John Ford
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Siyao Liu
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Sarah C Vick
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Miguel Martin
- Instituto de Investigación Sanitaria Gregorio Marañon, CIBERONC, Universidad Complutense, Madrid, Spain
| | - Joel S Parker
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Benjamin G Vincent
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA; Curriculum in Bioinformatics and Computational Biology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Jonathan S Serody
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Charles M Perou
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA.
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17
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Hámori L, Kudlik G, Szebényi K, Kucsma N, Szeder B, Póti Á, Uher F, Várady G, Szüts D, Tóvári J, Füredi A, Szakács G. Establishment and Characterization of a Brca1 -/-, p53 -/- Mouse Mammary Tumor Cell Line. Int J Mol Sci 2020; 21:ijms21041185. [PMID: 32053991 PMCID: PMC7072850 DOI: 10.3390/ijms21041185] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/25/2020] [Accepted: 02/01/2020] [Indexed: 12/15/2022] Open
Abstract
Breast cancer is the most commonly occurring cancer in women and the second most common cancer overall. By the age of 80, the estimated risk for breast cancer for women with germline BRCA1 or BRCA2 mutations is around 80%. Genetically engineered BRCA1-deficient mouse models offer a unique opportunity to study the pathogenesis and therapy of triple negative breast cancer. Here we present a newly established Brca1−/−, p53−/− mouse mammary tumor cell line, designated as CST. CST shows prominent features of BRCA1-mutated triple-negative breast cancers including increased motility, high proliferation rate, genome instability and sensitivity to platinum chemotherapy and PARP inhibitors (olaparib, veliparib, rucaparib and talazoparib). Genomic instability of CST cells was confirmed by whole genome sequencing, which also revealed the presence of COSMIC (Catalogue of Somatic Mutations in Cancer) mutation signatures 3 and 8 associated with homologous recombination (HR) deficiency. In vitro sensitivity of CST cells was tested against 11 chemotherapy agents. Tumors derived from orthotopically injected CST-mCherry cells in FVB-GFP mice showed sensitivity to cisplatin, providing a new model to study the cooperation of BRCA1-KO, mCherry-positive tumor cells and the GFP-expressing stromal compartment in therapy resistance and metastasis formation. In summary, we have established CST cells as a new model recapitulating major characteristics of BRCA1-negative breast cancers.
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Affiliation(s)
- Lilla Hámori
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
| | - Gyöngyi Kudlik
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
| | - Kornélia Szebényi
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
- Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria
| | - Nóra Kucsma
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
| | - Bálint Szeder
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
| | - Ádám Póti
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
| | - Ferenc Uher
- Central Hospital of Southern Pest—National Institute of Hematology and Infectious Diseases, 1097 Budapest, Hungary;
| | - György Várady
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
| | - Dávid Szüts
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
| | - József Tóvári
- Department of Experimental Pharmacology, National Institute of Oncology, 1122, Budapest, Hungary;
| | - András Füredi
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
- Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria
- Correspondence: (A.F.); (G.S.)
| | - Gergely Szakács
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (L.H.); (G.K.); (K.S.); (N.K.); (B.S.); (Á.P.); (G.V.); (D.S.)
- Institute of Cancer Research, Medical University of Vienna, 1090 Vienna, Austria
- Correspondence: (A.F.); (G.S.)
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