1
|
Thapa I, Sellin Jeffries MK, Stewart MD. One of these strains is not like the others: C. elegans DW102 has an altered dependence on brc-1 and brd-1 for regulation of cyp gene transcription. MICROPUBLICATION BIOLOGY 2024; 2024:10.17912/micropub.biology.001152. [PMID: 38894809 PMCID: PMC11184413 DOI: 10.17912/micropub.biology.001152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/23/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024]
Abstract
Several strains of Caenorhabditis elegans with mutations in brc-1 or brd-1 are readily available to aid in elucidating the functions of these two genes in DNA damage repair, meiosis, and gene repression. DW102 is the only C. elegans strain to our knowledge with mutations in both brc-1 and brd-1 . However, several groups have reported the DW102 strain is indistinguishable from wild-type when observing levels of embryonic lethality, sensitivity to radiation, and rates of male progeny, while strains with mutations in either brc-1 or brd-1 display increased occurrence of these phenotypes. Here, RT-qPCR analysis of the cyp-13A gene family, reveals distinctive and aberrant expression patterns in DW102 compared to other brc-1 or brd-1 mutant strains underscoring the need for caution in choosing this strain to draw conclusions about brc-1 and brd-1 functions.
Collapse
Affiliation(s)
- Ishor Thapa
- Biology Department, Texas Christian University, Fort Worth, Texas, United States
| | | | - Mikaela D. Stewart
- Biology Department, Texas Christian University, Fort Worth, Texas, United States
| |
Collapse
|
2
|
Wang X, Bai F, Liu X, Peng B, Xu X, Zhang H, Fu L, Zhu WG, Wang B, Pei XH. GATA3 functions downstream of BRCA1 to promote DNA damage repair and suppress dedifferentiation in breast cancer. BMC Biol 2024; 22:85. [PMID: 38627785 PMCID: PMC11020915 DOI: 10.1186/s12915-024-01881-6] [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: 03/30/2023] [Accepted: 04/04/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Inadequate DNA damage repair promotes aberrant differentiation of mammary epithelial cells. Mammary luminal cell fate is mainly determined by a few transcription factors including GATA3. We previously reported that GATA3 functions downstream of BRCA1 to suppress aberrant differentiation in breast cancer. How GATA3 impacts DNA damage repair preventing aberrant cell differentiation in breast cancer remains elusive. We previously demonstrated that loss of p18, a cell cycle inhibitor, in mice induces luminal-type mammary tumors, whereas depletion of either Brca1 or Gata3 in p18 null mice leads to basal-like breast cancers (BLBCs) with activation of epithelial-mesenchymal transition (EMT). We took advantage of these mutant mice to examine the role of Gata3 as well as the interaction of Gata3 and Brca1 in DNA damage repair in mammary tumorigenesis. RESULTS Depletion of Gata3, like that of Brca1, promoted DNA damage accumulation in breast cancer cells in vitro and in basal-like breast cancers in vivo. Reconstitution of Gata3 improved DNA damage repair in Brca1-deficient mammary tumorigenesis. Overexpression of GATA3 promoted homologous recombination (HR)-mediated DNA damage repair and restored HR efficiency of BRCA1-deficient cells. Depletion of Gata3 sensitized tumor cells to PARP inhibitor (PARPi), and reconstitution of Gata3 enhanced resistance of Brca1-deficient tumor cells to PARP inhibitor. CONCLUSIONS These results demonstrate that Gata3 functions downstream of BRCA1 to promote DNA damage repair and suppress dedifferentiation in mammary tumorigenesis and progression. Our findings suggest that PARP inhibitors are effective for the treatment of GATA3-deficient BLBCs.
Collapse
Affiliation(s)
- Xuejie Wang
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Marshall Laboratory of Biomedical Engineering, The First Affiliated Hospital, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Feng Bai
- Department of Pathology, Shenzhen University Medical School, Shenzhen, 518060, China
- Dewitt Daughtry Family Department of Surgery, University of Miami, Miami, FL, 33136, USA
| | - Xiong Liu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Marshall Laboratory of Biomedical Engineering, The First Affiliated Hospital, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Bin Peng
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and International Cancer Center and Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Xingzhi Xu
- Guangdong Key Laboratory for Genome Stability & Disease Prevention and International Cancer Center and Marshall Laboratory of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Hongquan Zhang
- Program for Cancer and Cell Biology, Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Li Fu
- Department of Pharmacology, Shenzhen University Medical School, Shenzhen, 518039, China
| | - Wei-Guo Zhu
- Department of Biochemistry and Molecular Biology, International Cancer Center, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Bin Wang
- Department of General Surgery, Shenzhen Children's Hospital, Shenzhen, 518038, China.
| | - Xin-Hai Pei
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Marshall Laboratory of Biomedical Engineering, The First Affiliated Hospital, Shenzhen University Medical School, Shenzhen, 518060, China.
- Dewitt Daughtry Family Department of Surgery, University of Miami, Miami, FL, 33136, USA.
- Department of Anatomy and Histology, Shenzhen University Medical School, Shenzhen, 518060, China.
| |
Collapse
|
3
|
Xu J, Zhou Y, He S, Wang Y, Ma J, Li C, Liu Z, Zhou X. Activation of the YY1-UGT2B7 Axis Promotes Mammary Estrogen Homeostasis Dysregulation and Exacerbates Breast Tumor Metastasis. Drug Metab Dispos 2024; 52:408-421. [PMID: 38575184 DOI: 10.1124/dmd.124.001640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/03/2024] [Accepted: 03/07/2024] [Indexed: 04/06/2024] Open
Abstract
Metastasis is the most common pathway of cancer death. The lack of effective predictors of breast cancer metastasis is a pressing issue in clinical practice. Therefore, exploring the mechanism of breast cancer metastasis to uncover reliable predictors is very important for the clinical treatment of breast cancer patients. In this study, tandem mass tag quantitative proteomics technology was used to detect protein content in primary breast tumor tissue samples from patients with metastatic and nonmetastatic breast cancer at diagnosis. We found that the high expression of yin-yang 1(YY1) is strongly associated with poor prognosis in high-grade breast cancer. YY1 expression was detected in both clinical tumor tissue samples and tumor tissue samples from mammary-specific polyomavirus middle T antigen overexpression mouse model mice. We demonstrated that upregulation of YY1 expression was closely associated with breast cancer metastasis and that high YY1 expression could promote the migratory invasive ability of breast cancer cells. Mechanistically, YY1 directly binds to the UGT2B7 mRNA initiation sequence ATTCAT, thereby transcriptionally regulating the inhibition of UGT2B7 expression. UGT2B7 can regulate the development of breast cancer by regulating estrogen homeostasis in the breast, and the abnormal accumulation of estrogen, especially 4-OHE2, promotes the migration and invasion of breast cancer cells, ultimately causing the development of breast cancer metastasis. In conclusion, YY1 can regulate the UGT2B7-estrogen metabolic axis and induce disturbances in estrogen metabolism in breast tumors, ultimately leading to breast cancer metastasis. Disturbances in estrogen metabolism in the breast tissue may be an important risk factor for breast tumor progression and metastasis SIGNIFICANCE STATEMENT: In this study, we propose for the first time a regulatory relationship between YY1 and the UGT2B7/estrogen metabolism axis and explore the molecular mechanism. Our study shows that the YY1/UGT2B7/estrogen axis plays an important role in the development and metastasis of breast cancer. This study further elucidates the potential mechanisms of YY1-mediated breast cancer metastasis and the possibility and promise of YY1 as a predictor of cancer metastasis.
Collapse
Affiliation(s)
- Jiahao Xu
- 1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China (J.X., Y.Z., S.H., Y.W., J.M., X.Z.); The First People's Hospital of Changzhou, Changzhou, China (J.X.); Department of Thyroid and Breast Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China (Z.L.); and Department of Breast Surgery, Xuzhou Central Hospital XuZhou Clinical School of Xuzhou Medical University, Xuzhou, China (C.L.)
| | - Ying Zhou
- 1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China (J.X., Y.Z., S.H., Y.W., J.M., X.Z.); The First People's Hospital of Changzhou, Changzhou, China (J.X.); Department of Thyroid and Breast Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China (Z.L.); and Department of Breast Surgery, Xuzhou Central Hospital XuZhou Clinical School of Xuzhou Medical University, Xuzhou, China (C.L.)
| | - Shiqing He
- 1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China (J.X., Y.Z., S.H., Y.W., J.M., X.Z.); The First People's Hospital of Changzhou, Changzhou, China (J.X.); Department of Thyroid and Breast Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China (Z.L.); and Department of Breast Surgery, Xuzhou Central Hospital XuZhou Clinical School of Xuzhou Medical University, Xuzhou, China (C.L.)
| | - Yinghao Wang
- 1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China (J.X., Y.Z., S.H., Y.W., J.M., X.Z.); The First People's Hospital of Changzhou, Changzhou, China (J.X.); Department of Thyroid and Breast Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China (Z.L.); and Department of Breast Surgery, Xuzhou Central Hospital XuZhou Clinical School of Xuzhou Medical University, Xuzhou, China (C.L.)
| | - Jiachen Ma
- 1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China (J.X., Y.Z., S.H., Y.W., J.M., X.Z.); The First People's Hospital of Changzhou, Changzhou, China (J.X.); Department of Thyroid and Breast Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China (Z.L.); and Department of Breast Surgery, Xuzhou Central Hospital XuZhou Clinical School of Xuzhou Medical University, Xuzhou, China (C.L.)
| | - Changwen Li
- 1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China (J.X., Y.Z., S.H., Y.W., J.M., X.Z.); The First People's Hospital of Changzhou, Changzhou, China (J.X.); Department of Thyroid and Breast Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China (Z.L.); and Department of Breast Surgery, Xuzhou Central Hospital XuZhou Clinical School of Xuzhou Medical University, Xuzhou, China (C.L.)
| | - Zhao Liu
- 1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China (J.X., Y.Z., S.H., Y.W., J.M., X.Z.); The First People's Hospital of Changzhou, Changzhou, China (J.X.); Department of Thyroid and Breast Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China (Z.L.); and Department of Breast Surgery, Xuzhou Central Hospital XuZhou Clinical School of Xuzhou Medical University, Xuzhou, China (C.L.)
| | - Xueyan Zhou
- 1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China (J.X., Y.Z., S.H., Y.W., J.M., X.Z.); The First People's Hospital of Changzhou, Changzhou, China (J.X.); Department of Thyroid and Breast Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China (Z.L.); and Department of Breast Surgery, Xuzhou Central Hospital XuZhou Clinical School of Xuzhou Medical University, Xuzhou, China (C.L.)
| |
Collapse
|
4
|
Ponomarenko I, Pasenov K, Churnosova M, Sorokina I, Aristova I, Churnosov V, Ponomarenko M, Reshetnikov E, Churnosov M. Sex-Hormone-Binding Globulin Gene Polymorphisms and Breast Cancer Risk in Caucasian Women of Russia. Int J Mol Sci 2024; 25:2182. [PMID: 38396861 PMCID: PMC10888713 DOI: 10.3390/ijms25042182] [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: 01/21/2024] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
In our work, the associations of GWAS (genome-wide associative studies) impact for sex-hormone-binding globulin (SHBG)-level SNPs with the risk of breast cancer (BC) in the cohort of Caucasian women of Russia were assessed. The work was performed on a sample of 1498 women (358 BC patients and 1140 control (non BC) subjects). SHBG correlated in previously GWAS nine polymorphisms such as rs780093 GCKR, rs17496332 PRMT6, rs3779195 BAIAP2L1, rs10454142 PPP1R21, rs7910927 JMJD1C, rs4149056 SLCO1B1, rs440837 ZBTB10, rs12150660 SHBG, and rs8023580 NR2F2 have been genotyped. BC risk effects of allelic and non-allelic SHBG-linked gene SNPs interactions were detected by regression analysis. The risk genetic factor for BC developing is an SHBG-lowering allele variant C rs10454142 PPP1R21 ([additive genetic model] OR = 1.31; 95%CI = 1.08-1.65; pperm = 0.024; power = 85.26%), which determines 0.32% of the cancer variance. Eight of the nine studied SHBG-related SNPs have been involved in cancer susceptibility as part of nine different non-allelic gene interaction models, the greatest contribution to which is made by rs10454142 PPP1R21 (included in all nine models, 100%) and four more SNPs-rs7910927 JMJD1C (five models, 55.56%), rs17496332 PRMT6 (four models, 44.44%), rs780093 GCKR (four models, 44.44%), and rs440837 ZBTB10 (four models, 44.44%). For SHBG-related loci, pronounced functionality in the organism (including breast, liver, fibroblasts, etc.) was predicted in silico, having a direct relationship through many pathways with cancer pathophysiology. In conclusion, our results demonstrated the involvement of SHBG-correlated genes polymorphisms in BC risk in Caucasian women in Russia.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Mikhail Churnosov
- Department of Medical Biological Disciplines, Belgorod State National Research University, 308015 Belgorod, Russia; (I.P.); (K.P.); (M.C.); (I.S.); (I.A.); (V.C.); (M.P.); (E.R.)
| |
Collapse
|
5
|
Minello A, Carreira A. BRCA1/2 Haploinsufficiency: Exploring the Impact of Losing one Allele. J Mol Biol 2024; 436:168277. [PMID: 37714298 DOI: 10.1016/j.jmb.2023.168277] [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: 07/04/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/17/2023]
Abstract
Since their discovery in the late 20th century, significant progress has been made in elucidating the functions of the tumor suppressor proteins BRCA1 and BRCA2. These proteins play vital roles in maintaining genome integrity, including DNA repair, replication fork protection, and chromosome maintenance. It is well-established that germline mutations in BRCA1 and BRCA2 increase the risk of breast and ovarian cancer; however, the precise mechanism underlying tumor formation in this context is not fully understood. Contrary to the long-standing belief that the loss of the second wild-type allele is necessary for tumor development, a growing body of evidence suggests that tumorigenesis can occur despite the presence of a single functional allele. This entails that heterozygosity in BRCA1/2 confers haploinsufficiency, where a single copy of the gene is not sufficient to fully suppress tumor formation. Here we provide an overview of the findings and the ongoing debate regarding BRCA haploinsufficiency. We further put out the challenges in studying this topic and discuss its potential relevance in the prevention and treatment of BRCA-related cancers.
Collapse
Affiliation(s)
- Anna Minello
- Institut Curie, PSL Research University, CNRS, UMR3348, F-91405 Orsay, France; Paris-Saclay University CNRS, UMR3348, F-91405 Orsay, France
| | - Aura Carreira
- Institut Curie, PSL Research University, CNRS, UMR3348, F-91405 Orsay, France; Paris-Saclay University CNRS, UMR3348, F-91405 Orsay, France; Genome Instability and Cancer Predisposition Lab, Department of Genome Dynamics and Function, Centro de Biologia Molecular Severo Ochoa (CBMSO, CSIC-UAM), Madrid 28049, Spain.
| |
Collapse
|
6
|
Pacheco JHL, Elizondo G. Interplay between Estrogen, Kynurenine, and AHR Pathways: An immunosuppressive axis with therapeutic potential for breast cancer treatment. Biochem Pharmacol 2023; 217:115804. [PMID: 37716620 DOI: 10.1016/j.bcp.2023.115804] [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: 06/09/2023] [Revised: 09/11/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
Breast cancer is one of the most common malignancies among women worldwide. Estrogen exposure via endogenous and exogenous sources during a lifetime, together with environmental exposure to estrogenic compounds, represent the most significant risk factor for breast cancer development. As breast tumors establish, multiple pathways are deregulated. Among them is the aryl hydrocarbon receptor (AHR) signaling pathway. AHR, a ligand-activated transcription factor associated with the metabolism of polycyclic aromatic hydrocarbons and estrogens, is overexpressed in breast cancer. Furthermore, AHR and estrogen receptor (ER) cross-talk pathways have been observed. Additionally, the Tryptophan (Trp) catabolizing enzymes indolamine-2,3-dioxygenase (IDO) and tryptophan-2,3-dioxygenase (TDO) are overexpressed in breast cancer. IDO/TDO catalyzes the formation of Kynurenine (KYN) and other tryptophan-derived metabolites, which are ligands of AHR. Once KYN activates AHR, it stimulates the expression of the IDO enzyme, increases the level of KYN, and activates non-canonical pathways to control inflammation and immunosuppression in breast tumors. The interplay between E2, AHR, and IDO/TDO/KYN pathways and their impact on the immune system represents an immunosuppressive axis on breast cancer. The potential modulation of the immunosuppressive E2-AHR-IDO/TDO/KYN axis has aroused great expectations in oncotherapy. The present article will review the mechanisms implicated in generating the immunosuppressive axis E2-AHR-IDO/TDO/KYN in breast cancer and the current state of knowledge as a potential therapeutic target.
Collapse
Affiliation(s)
| | - Guillermo Elizondo
- Departamento de Biología Celular, CINVESTAV-IPN, Av. IPN 2508, C.P. 07360 Ciudad de México, México.
| |
Collapse
|
7
|
Traphagen NA, Schwartz GN, Tau S, Roberts AM, Jiang A, Hosford SR, Marotti JD, Goen AE, Romo BA, Johnson AL, Duffy ECK, Demidenko E, Heverly P, Mosesson Y, Soucy SM, Kolling F, Miller TW. Estrogen Therapy Induces Receptor-Dependent DNA Damage Enhanced by PARP Inhibition in ER+ Breast Cancer. Clin Cancer Res 2023; 29:3717-3728. [PMID: 37439680 PMCID: PMC10528687 DOI: 10.1158/1078-0432.ccr-23-0488] [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: 02/27/2023] [Revised: 05/15/2023] [Accepted: 07/07/2023] [Indexed: 07/14/2023]
Abstract
PURPOSE Clinical evidence indicates that treatment with estrogens elicits anticancer effects in ∼30% of patients with advanced endocrine-resistant estrogen receptor α (ER)-positive breast cancer. Despite the proven efficacy of estrogen therapy, its mechanism of action is unclear and this treatment remains underused. Mechanistic understanding may offer strategies to enhance therapeutic efficacy. EXPERIMENTAL DESIGN We performed genome-wide CRISPR/Cas9 screening and transcriptomic profiling in long-term estrogen-deprived ER+ breast cancer cells to identify pathways required for therapeutic response to the estrogen 17β-estradiol (E2). We validated findings in cell lines, patient-derived xenografts (PDX), and patient samples, and developed a novel combination treatment through testing in cell lines and PDX models. RESULTS Cells treated with E2 exhibited replication-dependent markers of DNA damage and the DNA damage response prior to apoptosis. Such DNA damage was partially driven by the formation of DNA:RNA hybrids (R-loops). Pharmacologic suppression of the DNA damage response via PARP inhibition with olaparib enhanced E2-induced DNA damage. PARP inhibition synergized with E2 to suppress growth and prevent tumor recurrence in BRCA1/2-mutant and BRCA1/2-wild-type cell line and PDX models. CONCLUSIONS E2-induced ER activity drives DNA damage and growth inhibition in endocrine-resistant breast cancer cells. Inhibition of the DNA damage response using drugs such as PARP inhibitors can enhance therapeutic response to E2. These findings warrant clinical exploration of the combination of E2 with DNA damage response inhibitors in advanced ER+ breast cancer, and suggest that PARP inhibitors may synergize with therapeutics that exacerbate transcriptional stress.
Collapse
Affiliation(s)
- Nicole A. Traphagen
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Gary N. Schwartz
- Department of Medicine, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Steven Tau
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Alyssa M. Roberts
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Amanda Jiang
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Sarah R. Hosford
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Jonathan D. Marotti
- Department of Pathology and Laboratory Medicine, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Abigail E. Goen
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Bianca A. Romo
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Anneka L. Johnson
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Emily-Claire K. Duffy
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Eugene Demidenko
- Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | | | | | - Shannon M. Soucy
- Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
- Center for Quantitative Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Fred Kolling
- Center for Quantitative Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Todd W. Miller
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| |
Collapse
|
8
|
Kiewa J, Mortlock S, Meltzer-Brody S, Middeldorp C, Wray NR, Byrne EM. A Common Genetic Factor Underlies Genetic Risk for Gynaecological and Reproductive Disorders and Is Correlated with Risk to Depression. Neuroendocrinology 2023; 113:1059-1075. [PMID: 37544299 PMCID: PMC10614513 DOI: 10.1159/000533413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 07/24/2023] [Indexed: 08/08/2023]
Abstract
INTRODUCTION Sex steroid hormone fluctuations may underlie both reproductive disorders and sex differences in lifetime depression prevalence. Previous studies report high comorbidity among reproductive disorders and between reproductive disorders and depression. This study sought to assess the multivariate genetic architecture of reproductive disorders and their loading onto a common genetic factor and investigated whether this latent factor shares a common genetic architecture with female depression, including perinatal depression (PND). METHOD Using UK Biobank and FinnGen data, genome-wide association meta-analyses were conducted for nine reproductive disorders, and genetic correlation between disorders was estimated. Genomic Structural Equation Modelling identified a latent genetic factor underlying disorders, accounting for their significant genetic correlations. SNPs significantly associated with both latent factor and depression were identified. RESULTS Excellent model fit existed between a latent factor underlying five reproductive disorders (χ2 (5) = 6.4; AIC = 26.4; CFI = 1.00; SRMR = 0.03) with high standardised loadings for menorrhagia (0.96, SE = 0.05); ovarian cysts (0.94, SE = 0.05); endometriosis (0.83, SE = 0.05); menopausal symptoms (0.77, SE = 0.10); and uterine fibroids (0.65, SE = 0.05). This latent factor was genetically correlated with PND (rG = 0.37, SE = 0.15, p = 1.4e-03), depression in females only (rG = 0.48, SE = 0.06, p = 7.2e-11), and depression in both males and females (MD) (rG = 0.35, SE = 0.03, p = 1.8e-30), with its top locus associated with FSHB/ARL14EP (rs11031006; p = 9.1e-33). SNPs intronic to ESR1, significantly associated with the latent factor, were also associated with PND, female depression, and MD. CONCLUSION A common genetic factor, correlated with depression, underlies risk of reproductive disorders, with implications for aetiology and treatment. Genetic variation in ESR1 is associated with reproductive disorders and depression, highlighting the importance of oestrogen signalling for both reproductive and mental health.
Collapse
Affiliation(s)
- Jacqueline Kiewa
- Child Health Research Centre, University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Sally Mortlock
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | | | - Christel Middeldorp
- Child Health Research Centre, University of Queensland, Brisbane, QLD, Australia
- Child and Youth Mental Health Service, Children’s Health Queensland Hospital and Health Service, Brisbane, QLD, Australia
- Department of Child and Adolescent Psychiatry and Psychology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Department of Youth and Family and Department of Research, Arkin Institute for Mental Health, Amsterdam, The Netherlands
- Levvel, Academic Centre for Child and Adolescent Psychiatry, Amsterdam, The Netherlands
| | - Naomi R. Wray
- Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD, Australia
| | - Enda M. Byrne
- Child Health Research Centre, University of Queensland, Brisbane, QLD, Australia
| |
Collapse
|
9
|
Hu-Heimgartner K, Lang N, Ayme A, Ming C, Combes JD, Chappuis VN, Vazquez C, Friedlaender A, Vuilleumier A, Bodmer A, Viassolo V, Sandoval JL, Chappuis PO, Labidi-Galy SI. Hematologic toxicities of chemotherapy in breast and ovarian cancer patients carrying BRCA1/BRCA2 germline pathogenic variants. A single center experience and review of the literature. Fam Cancer 2023; 22:283-289. [PMID: 37119509 PMCID: PMC10276105 DOI: 10.1007/s10689-023-00331-6] [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: 10/22/2021] [Accepted: 04/05/2023] [Indexed: 05/01/2023]
Abstract
BRCA1 and BRCA2 play a central role in DNA repair and their germline pathogenic variants (gBRCA) confer a high risk for developing breast and ovarian cancer. Standard chemotherapy regimens for these cancers include DNA-damaging agents. We hypothesized that gBRCA carriers might be at higher risk of developing chemotherapy-related hematologic toxicity and therapy-related myeloid neoplasms (t-MN). We conducted a retrospective study of women newly diagnosed with invasive breast or ovarian cancer who were screened for gBRCA1/gBRCA2 at Geneva University Hospitals. All patients were treated with (neo-)adjuvant chemotherapy. We evaluated acute hematologic toxicities by analyzing the occurrence of febrile neutropenia and severe neutropenia (grade 4) at day 7-14 of the first cycle of chemotherapy and G-CSF use during the entire chemotherapy regimen. Characteristics of t-MN were collected. We reviewed medical records from 447 patients: 58 gBRCA1 and 40 gBRCA2 carriers and 349 non-carriers. gBRCA1 carriers were at higher risk of developing severe neutropenia (32% vs. 14.5%, p = 0.007; OR = 3.3, 95% CI [1.6-7], p = 0.001) and of requiring G-CSF for secondary prophylaxis (58.3% vs. 38.2%, p = 0.011; OR = 2.5, 95% CI [1.4-4.8], p = 0.004). gBRCA2 carriers did not show increased acute hematologic toxicities. t-MN were observed in 2 patients (1 gBRCA1 and one non-carrier). Our results suggested an increased acute hematologic toxicity upon exposure to chemotherapy for breast and ovarian cancer among gBRCA1 but not gBRCA2 carriers. A deeper characterization of t-MN is warranted with the recent development of PARP inhibitors in frontline therapy in gBRCA breast and ovarian cancer.
Collapse
Affiliation(s)
- Ketty Hu-Heimgartner
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - Noémie Lang
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - Aurélie Ayme
- Department of Diagnostics, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - Chang Ming
- Department of Clinical Research, Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Jean-Damien Combes
- Infections and Cancer Epidemiology Group, International Agency for Research on Cancer, Lyon, France
| | - Victor N Chappuis
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - Carla Vazquez
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - Alex Friedlaender
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - Aurélie Vuilleumier
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - Alexandre Bodmer
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - Valeria Viassolo
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - José L Sandoval
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
| | - Pierre O Chappuis
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland
- Department of Diagnostics, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - S Intidhar Labidi-Galy
- Department of Oncology, Hôpitaux Universitaires de Genève, 4, Rue Gabrielle Perret-Gentil, Geneva, 1205, Switzerland.
- Center of Translational Research in Onco-Hematology, Faculty of Medicine, University of Geneva, Swiss Cancer Center Leman, Genève, Switzerland.
| |
Collapse
|
10
|
Ashraf S, Deshpande N, Vasanth S, Melangath G, Wong RJ, Zhao Y, Price MO, Price FW, Jurkunas UV. Dysregulation of DNA repair genes in Fuchs endothelial corneal dystrophy. Exp Eye Res 2023; 231:109499. [PMID: 37169279 PMCID: PMC10246500 DOI: 10.1016/j.exer.2023.109499] [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: 12/01/2022] [Revised: 03/27/2023] [Accepted: 05/08/2023] [Indexed: 05/13/2023]
Abstract
Fuchs Endothelial Corneal Dystrophy (FECD), a late-onset oxidative stress disorder, is the most common cause of corneal endothelial degeneration and is genetically associated with CTG repeat expansion in Transcription Factor 4 (TCF4). We previously reported accumulation of nuclear (nDNA) and mitochondrial (mtDNA) damage in FECD. Specifically, mtDNA damage was a prominent finding in development of disease in the ultraviolet-A (UVA) induced FECD mouse model. We hypothesize that an aberrant DNA repair may contribute to the increased DNA damage seen in FECD. We analyzed differential expression profiles of 84 DNA repair genes by real-time PCR arrays using Human DNA Repair RT-Profiler plates using cDNA extracted from Descemet's membrane-corneal endothelium (DM-CE) obtained from FECD patients with expanded (>40) or non-expanded (<40) intronic CTG repeats in TCF4 gene and from age-matched normal donors. Change in mRNA expression of <0.5- or >2.0-fold in FECD relative to normal was set as cutoff for down- or upregulation. Downregulated mitochondrial genes were further validated using the UVA-based mouse model of FECD. FECD specimens exhibited downregulation of 9 genes and upregulation of 8 genes belonging to the four major DNA repair pathways, namely, base excision repair (BER), nucleotide excision repair (NER), mismatch repair (MMR), and double strand break (DSB) repair, compared to normal donors. MMR gene MSH2 and BER gene POLB were preferentially upregulated in expanded FECD. BER genes LIG3 and NEIL2, DSB repair genes PARP3 and TOP3A, NER gene XPC, and unclassified pathway gene TREX1, were downregulated in both expanded and non-expanded FECD. MtDNA repair genes, Lig3, Neil2, and Top3a, were also downregulated in the UVA-based mouse model of FECD. Our findings identify impaired DNA repair pathways that may play an important role in DNA damage due to oxidative stress as well as genetic predisposition noted in FECD.
Collapse
Affiliation(s)
- Shazia Ashraf
- Schepens Eye Research Institute, Boston, MA, 02114, United States; Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, 02114, United States; Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, United States
| | - Neha Deshpande
- Schepens Eye Research Institute, Boston, MA, 02114, United States; Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, 02114, United States; Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, United States
| | - Shivakumar Vasanth
- Schepens Eye Research Institute, Boston, MA, 02114, United States; Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, 02114, United States; Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, United States
| | - Geetha Melangath
- Schepens Eye Research Institute, Boston, MA, 02114, United States; Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, 02114, United States; Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, United States
| | - Raymond J Wong
- Schepens Eye Research Institute, Boston, MA, 02114, United States; Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, 02114, United States; Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, United States
| | - Yan Zhao
- Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, 02114, United States; Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, United States
| | - Marianne O Price
- Price Vision Group and Cornea Research Foundation of America, Indianapolis, IN, 46260, United States
| | - Francis W Price
- Price Vision Group and Cornea Research Foundation of America, Indianapolis, IN, 46260, United States
| | - Ula V Jurkunas
- Schepens Eye Research Institute, Boston, MA, 02114, United States; Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, 02114, United States; Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, United States.
| |
Collapse
|
11
|
Thapa I, Vahrenkamp R, Witus SR, Lightle C, Falkenberg O, Sellin Jeffries M, Klevit R, Stewart MD. Conservation of transcriptional regulation by BRCA1 and BARD1 in Caenorhabditis elegans. Nucleic Acids Res 2023; 51:2108-2116. [PMID: 36250637 PMCID: PMC10018340 DOI: 10.1093/nar/gkac877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/22/2022] [Accepted: 09/29/2022] [Indexed: 01/27/2023] Open
Abstract
The tumor-suppressor proteins BRCA1 and BARD1 function as an E3 ubiquitin ligase to facilitate transcriptional repression and DNA damage repair. This is mediated in-part through its ability to mono-ubiquitylate histone H2A in nucleosomes. Studies in Caenorhabditis elegans have been used to elucidate numerous functions of BRCA1 and BARD1; however, it has not been established that the C. elegans orthologs, BRC-1 and BRD-1, retain all the functions of their human counterparts. Here we explore the conservation of enzymatic activity toward nucleosomes which leads to repression of estrogen-metabolizing cytochrome P450 (cyp) genes in humans. Biochemical assays establish that BRC-1 and BRD-1 contribute to ubiquitylation of histone H2A in the nucleosome. Mutational analysis shows that while BRC-1 likely binds the nucleosome using a conserved interface, BRD-1 and BARD1 have evolved different modes of binding, resulting in a difference in the placement of ubiquitin on H2A. Gene expression analysis reveals that in spite of this difference, BRC-1 and BRD-1 also contribute to cyp gene repression in C. elegans. Establishing conservation of these functions in C. elegans allows for use of this powerful model organism to address remaining questions regarding regulation of gene expression by BRCA1 and BARD1.
Collapse
Affiliation(s)
| | | | - Samuel R Witus
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Caitlin Lightle
- Department of Biology, Texas Christian University, Fort Worth, TX 76129, USA
| | - Owen Falkenberg
- Department of Biology, Texas Christian University, Fort Worth, TX 76129, USA
| | | | - Rachel E Klevit
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | | |
Collapse
|
12
|
Traphagen NA, Schwartz GN, Tau S, Jiang A, Hosford SR, Goen AE, Roberts AM, Romo BA, Johnson AL, Duffy ECK, Demidenko E, Heverly P, Mosesson Y, Soucy SM, Kolling F, Miller TW. Estrogen therapy induces receptor-dependent DNA damage enhanced by PARP inhibition in ER+ breast cancer. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.16.532956. [PMID: 36993590 PMCID: PMC10055145 DOI: 10.1101/2023.03.16.532956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Purpose Clinical evidence indicates that treatment with estrogens elicits anti-cancer effects in ∼30% of patients with advanced endocrine-resistant estrogen receptor alpha (ER)-positive breast cancer. Despite the proven efficacy of estrogen therapy, its mechanism of action is unclear and this treatment remains under-utilized. Mechanistic understanding may offer strategies to enhance therapeutic efficacy. Experimental Design We performed genome-wide CRISPR/Cas9 screening and transcriptomic profiling in long-term estrogen-deprived (LTED) ER+ breast cancer cells to identify pathways required for therapeutic response to the estrogen 17β-estradiol (E2). We validated findings in cell lines, patient-derived xenografts (PDXs), and patient samples, and developed a novel combination treatment through testing in cell lines and PDX models. Results Cells treated with E2 exhibited replication-dependent markers of DNA damage and the DNA damage response prior to apoptosis. Such DNA damage was partially driven by the formation of DNA:RNA hybrids (R-loops). Pharmacological suppression of the DNA damage response via poly(ADP-ribose) polymerase (PARP) inhibition with olaparib enhanced E2-induced DNA damage. PARP inhibition synergized with E2 to suppress growth and prevent tumor recurrence in BRCA1/2 -mutant and BRCA1 /2-wild-type cell line and PDX models. Conclusions E2-induced ER activity drives DNA damage and growth inhibition in endocrine-resistant breast cancer cells. Inhibition of the DNA damage response using drugs such as PARP inhibitors can enhance therapeutic response to E2. These findings warrant clinical exploration of the combination of E2 with DNA damage response inhibitors in advanced ER+ breast cancer, and suggest that PARP inhibitors may synergize with therapeutics that exacerbate transcriptional stress.
Collapse
|
13
|
Bhardwaj P, Iyengar NM, Zahid H, Carter KM, Byun DJ, Choi MH, Sun Q, Savenkov O, Louka C, Liu C, Piloco P, Acosta M, Bareja R, Elemento O, Foronda M, Dow LE, Oshchepkova S, Giri DD, Pollak M, Zhou XK, Hopkins BD, Laughney AM, Frey MK, Ellenson LH, Morrow M, Spector JA, Cantley LC, Brown KA. Obesity promotes breast epithelium DNA damage in women carrying a germline mutation in BRCA1 or BRCA2. Sci Transl Med 2023; 15:eade1857. [PMID: 36812344 PMCID: PMC10557057 DOI: 10.1126/scitranslmed.ade1857] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 01/23/2023] [Indexed: 02/24/2023]
Abstract
Obesity, defined as a body mass index (BMI) ≥ 30, is an established risk factor for breast cancer among women in the general population after menopause. Whether elevated BMI is a risk factor for women with a germline mutation in BRCA1 or BRCA2 is less clear because of inconsistent findings from epidemiological studies and a lack of mechanistic studies in this population. Here, we show that DNA damage in normal breast epithelia of women carrying a BRCA mutation is positively correlated with BMI and with biomarkers of metabolic dysfunction. In addition, RNA sequencing showed obesity-associated alterations to the breast adipose microenvironment of BRCA mutation carriers, including activation of estrogen biosynthesis, which affected neighboring breast epithelial cells. In breast tissue explants cultured from women carrying a BRCA mutation, we found that blockade of estrogen biosynthesis or estrogen receptor activity decreased DNA damage. Additional obesity-associated factors, including leptin and insulin, increased DNA damage in human BRCA heterozygous epithelial cells, and inhibiting the signaling of these factors with a leptin-neutralizing antibody or PI3K inhibitor, respectively, decreased DNA damage. Furthermore, we show that increased adiposity was associated with mammary gland DNA damage and increased penetrance of mammary tumors in Brca1+/- mice. Overall, our results provide mechanistic evidence in support of a link between elevated BMI and breast cancer development in BRCA mutation carriers. This suggests that maintaining a lower body weight or pharmacologically targeting estrogen or metabolic dysfunction may reduce the risk of breast cancer in this population.
Collapse
Affiliation(s)
- Priya Bhardwaj
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Neil M. Iyengar
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Heba Zahid
- Department of Medical Laboratory Technology, College of Applied Medical Science, Taibah University, Medina 42353, Saudi Arabia
| | | | - Dong Jun Byun
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Korea
| | - Man Ho Choi
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Korea
| | - Qi Sun
- Computational Biology Service Unit of Life Sciences Core Laboratories Center, Cornell University, Ithaca, NY 14853, USA
| | - Oleksandr Savenkov
- Department of Population Health Sciences, Weill Cornell Medicine, New York, NY 10065, USA
| | - Charalambia Louka
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Catherine Liu
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Phoebe Piloco
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Monica Acosta
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Rohan Bareja
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Olivier Elemento
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Miguel Foronda
- Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Lukas E. Dow
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY 10065, USA
| | - Sofya Oshchepkova
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Dilip D. Giri
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Michael Pollak
- Departments of Medicine and Oncology, McGill University, Montreal, Canada
| | - Xi Kathy Zhou
- Department of Population Health Sciences, Weill Cornell Medicine, New York, NY 10065, USA
| | - Benjamin D. Hopkins
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Ashley M. Laughney
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY 10065, USA
| | - Melissa K. Frey
- Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Lora Hedrick Ellenson
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Monica Morrow
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Jason A. Spector
- Laboratory of Bioregenerative Medicine and Surgery, Weill Cornell Medicine, New York, NY 10065, USA
| | - Lewis C. Cantley
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY 10065, USA
| | - Kristy A. Brown
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY 10065, USA
| |
Collapse
|
14
|
Wu X, Guo M, Cui J, Cai H, Wang SM. Heterozygotic Brca1 mutation initiates mouse genome instability at embryonic stage. Oncogenesis 2022; 11:41. [PMID: 35869059 PMCID: PMC9307611 DOI: 10.1038/s41389-022-00417-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 07/07/2022] [Accepted: 07/11/2022] [Indexed: 12/12/2022] Open
Abstract
BRCA1 mutation is the genetic predisposition in causing genome instability towards cancer. BRCA1 mutation is predominantly germline inherited at the fertilization. However, when the inherited mutation initiates genome instability in the mutation carriers remains largely elusive. We used a heterozygotic Brca1-knockout mouse as a model to investigate the issue. Through whole-genome sequencing and bioinformatics analysis, we monitored genome status across the developmental stages from embryo to adulthood in the mouse model. We observed that genome instability as reflected by structural variation, indel and copy number variation already appeared at 10.5-day embryo and progressively towards adulthood. We also observed that the genome instability was not linearly accumulated but dynamically changed along the developmental process, affecting many oncogenic genes and pathways including DNA damage repair, estrogen signaling, and oncogenesis. We further observed that many genome abnormalities in the cancer caused by Brca1 mutation were originated at embryonic stage, and Trp53 (TP53) mutation was not essential for the Brca1 mutation-caused genome instability in the non-cancer cells. Our study revealed that heterozygotic Brca1 mutation alone can cause genome instability at embryonic stage, highlighting that prevention of BRCA1 mutation-related cancer in humans may need to start earlier than currently considered.
Collapse
|
15
|
Hakkaart C, Pearson JF, Marquart L, Dennis J, Wiggins GAR, Barnes DR, Robinson BA, Mace PD, Aittomäki K, Andrulis IL, Arun BK, Azzollini J, Balmaña J, Barkardottir RB, Belhadj S, Berger L, Blok MJ, Boonen SE, Borde J, Bradbury AR, Brunet J, Buys SS, Caligo MA, Campbell I, Chung WK, Claes KBM, Collonge-Rame MA, Cook J, Cosgrove C, Couch FJ, Daly MB, Dandiker S, Davidson R, de la Hoya M, de Putter R, Delnatte C, Dhawan M, Diez O, Ding YC, Domchek SM, Donaldson A, Eason J, Easton DF, Ehrencrona H, Engel C, Evans DG, Faust U, Feliubadaló L, Fostira F, Friedman E, Frone M, Frost D, Garber J, Gayther SA, Gehrig A, Gesta P, Godwin AK, Goldgar DE, Greene MH, Hahnen E, Hake CR, Hamann U, Hansen TVO, Hauke J, Hentschel J, Herold N, Honisch E, Hulick PJ, Imyanitov EN, Isaacs C, Izatt L, Izquierdo A, Jakubowska A, James PA, Janavicius R, John EM, Joseph V, Karlan BY, Kemp Z, Kirk J, Konstantopoulou I, Koudijs M, Kwong A, Laitman Y, Lalloo F, Lasset C, Lautrup C, Lazaro C, Legrand C, Leslie G, Lesueur F, Mai PL, Manoukian S, Mari V, Martens JWM, McGuffog L, Mebirouk N, Meindl A, Miller A, Montagna M, Moserle L, Mouret-Fourme E, Musgrave H, Nambot S, Nathanson KL, Neuhausen SL, Nevanlinna H, Yie JNY, Nguyen-Dumont T, Nikitina-Zake L, Offit K, Olah E, Olopade OI, Osorio A, Ott CE, Park SK, Parsons MT, Pedersen IS, Peixoto A, Perez-Segura P, Peterlongo P, Pocza T, Radice P, Ramser J, Rantala J, Rodriguez GC, Rønlund K, Rosenberg EH, Rossing M, Schmutzler RK, Shah PD, Sharif S, Sharma P, Side LE, Simard J, Singer CF, Snape K, Steinemann D, Stoppa-Lyonnet D, Sutter C, Tan YY, Teixeira MR, Teo SH, Thomassen M, Thull DL, Tischkowitz M, Toland AE, Trainer AH, Tripathi V, Tung N, van Engelen K, van Rensburg EJ, Vega A, Viel A, Walker L, Weitzel JN, Wevers MR, Chenevix-Trench G, Spurdle AB, Antoniou AC, Walker LC. Copy number variants as modifiers of breast cancer risk for BRCA1/BRCA2 pathogenic variant carriers. Commun Biol 2022; 5:1061. [PMID: 36203093 PMCID: PMC9537519 DOI: 10.1038/s42003-022-03978-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 09/12/2022] [Indexed: 11/23/2022] Open
Abstract
The contribution of germline copy number variants (CNVs) to risk of developing cancer in individuals with pathogenic BRCA1 or BRCA2 variants remains relatively unknown. We conducted the largest genome-wide analysis of CNVs in 15,342 BRCA1 and 10,740 BRCA2 pathogenic variant carriers. We used these results to prioritise a candidate breast cancer risk-modifier gene for laboratory analysis and biological validation. Notably, the HR for deletions in BRCA1 suggested an elevated breast cancer risk estimate (hazard ratio (HR) = 1.21), 95% confidence interval (95% CI = 1.09-1.35) compared with non-CNV pathogenic variants. In contrast, deletions overlapping SULT1A1 suggested a decreased breast cancer risk (HR = 0.73, 95% CI 0.59-0.91) in BRCA1 pathogenic variant carriers. Functional analyses of SULT1A1 showed that reduced mRNA expression in pathogenic BRCA1 variant cells was associated with reduced cellular proliferation and reduced DNA damage after treatment with DNA damaging agents. These data provide evidence that deleterious variants in BRCA1 plus SULT1A1 deletions contribute to variable breast cancer risk in BRCA1 carriers.
Collapse
Affiliation(s)
- Christopher Hakkaart
- Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - John F Pearson
- Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Louise Marquart
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- School of Public Health, University of Queensland, Brisbane, Australia
| | - Joe Dennis
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - George A R Wiggins
- Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Daniel R Barnes
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Bridget A Robinson
- Department of Medicine, University of Otago, Christchurch, New Zealand
- Canterbury Regional Cancer and Haematology Service, Canterbury District Health Board, Christchurch Hospital, Christchurch, New Zealand
| | - Peter D Mace
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Kristiina Aittomäki
- Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
| | - Irene L Andrulis
- Fred A. Litwin Center for Cancer Genetics, Lunenfeld-Tanenbaum Research Institute of Mount Sinai Hospital, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Banu K Arun
- Department of Breast Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jacopo Azzollini
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori (INT), Milan, Italy
| | - Judith Balmaña
- Hereditary cancer Genetics Group, Vall d'Hebron Institute of Oncology, Vall d'Hebron Hospital Campus, Barcelona, Spain
- Department of Medical Oncology, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Rosa B Barkardottir
- Department of Pathology, Landspitali University Hospital, Reykjavik, Iceland
- BMC (Biomedical Centre), Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Sami Belhadj
- Clinical Genetics Research Lab, Department of Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Lieke Berger
- Department of Clinical Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Marinus J Blok
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Susanne E Boonen
- Department of Clinical Genetics, Odense University Hospital, Odence C, Denmark
| | - Julika Borde
- Center for Integrated Oncology (CIO), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Familial Breast and Ovarian Cancer, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Angela R Bradbury
- Department of Medicine, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Joan Brunet
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO), ONCOBELL-IDIBELL-IGTP, CIBERONC, Barcelona, Spain
| | - Saundra S Buys
- Department of Medicine, Huntsman Cancer Institute, Salt Lake City, UT, USA
| | - Maria A Caligo
- SOD Genetica Molecolare, University Hospital, Pisa, Italy
| | - Ian Campbell
- Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University, New York, NY, USA
| | | | | | - Jackie Cook
- Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield, UK
| | - Casey Cosgrove
- Gynecologic Oncology, Translational Therapeutics, Department of Obstetrics and Gynecology, Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Fergus J Couch
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Mary B Daly
- Department of Clinical Genetics, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Sita Dandiker
- Clinical Genetics Research Lab, Department of Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Rosemarie Davidson
- Department of Clinical Genetics, Queen Elizabeth University Hospital, Glasgow, UK
| | - Miguel de la Hoya
- Molecular Oncology Laboratory, CIBERONC, Hospital Clinico San Carlos, IdISSC (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos), Madrid, Spain
| | - Robin de Putter
- Centre for Medical Genetics, Ghent University Hospital, Gent, Belgium
| | - Capucine Delnatte
- Oncogénétique, Institut de Cancérologie de l'Ouest siteRené Gauducheau, Saint Herblain, France
| | - Mallika Dhawan
- Cancer Genetics and Prevention Program, University of California San Francisco, San Francisco, CA, USA
| | - Orland Diez
- Hereditary cancer Genetics Group, Vall d'Hebron Institute of Oncology, Vall d'Hebron Hospital Campus, Barcelona, Spain
- Area of Clinical and Molecular Genetics, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Yuan Chun Ding
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Susan M Domchek
- Basser Center for BRCA, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - Alan Donaldson
- Clinical Genetics Department, St Michael's Hospital, Bristol, UK
| | - Jacqueline Eason
- Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Douglas F Easton
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Hans Ehrencrona
- Department of Clinical Genetics and Pathology, Laboratory Medicine, Skåne University Hospital, Lund, Sweden
- Division of Clinical Genetics, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Christoph Engel
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany
- LIFE - Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - D Gareth Evans
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
- North West Genomics Laboratory Hub, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Ulrike Faust
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Lidia Feliubadaló
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO), ONCOBELL-IDIBELL-IGTP, CIBERONC, Barcelona, Spain
| | - Florentia Fostira
- Molecular Diagnostics Laboratory, INRASTES, National Centre for Scientific Research 'Demokritos', Athens, Greece
| | - Eitan Friedman
- The Susanne Levy Gertner Oncogenetics Unit, Chaim Sheba Medical Center, Ramat Gan, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | - Megan Frone
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Debra Frost
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Judy Garber
- Cancer Risk and Prevention Clinic, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Simon A Gayther
- Center for Bioinformatics and Functional Genomics and the Cedars Sinai Genomics Core, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Andrea Gehrig
- Department of Human Genetics, University Würzburg, Würzburg, Germany
| | - Paul Gesta
- Service Régional Oncogénétique Poitou-Charentes, CH Niort, Niort, France
| | - Andrew K Godwin
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - David E Goldgar
- Department of Dermatology, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Mark H Greene
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Eric Hahnen
- Center for Integrated Oncology (CIO), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Familial Breast and Ovarian Cancer, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | | | - Ute Hamann
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Thomas V O Hansen
- Department of Clinical Genetics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Jan Hauke
- Center for Integrated Oncology (CIO), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Familial Breast and Ovarian Cancer, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Julia Hentschel
- Institute of Human Genetics, University Hospital Leipzig, Leipzig, Germany
| | - Natalie Herold
- Center for Integrated Oncology (CIO), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Familial Breast and Ovarian Cancer, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Ellen Honisch
- Department of Gynecology and Obstetrics, University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Peter J Hulick
- Center for Medical Genetics, NorthShore University HealthSystem, Evanston, IL, USA
- The University of Chicago Pritzker School of Medicine, Chicago, IL, USA
| | | | - Claudine Isaacs
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Louise Izatt
- Clinical Genetics, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Angel Izquierdo
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO), ONCOBELL-IDIBELL-IGTP, CIBERONC, Barcelona, Spain
| | - Anna Jakubowska
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
- Independent Laboratory of Molecular Biology and Genetic Diagnostics, Pomeranian Medical University, Szczecin, Poland
| | - Paul A James
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
- Parkville Familial Cancer Centre, Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
| | - Ramunas Janavicius
- Faculty of Medicine, Institute of Biomedical Sciences, Dept. Of Human and Medical Genetics, Vilnius University, Vilnius, Lithuania
- State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Esther M John
- Department of Epidemiology & Population Health, Stanford University School of Medicine, Stanford, CA, USA
- Department of Medicine, Division of Oncology, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Vijai Joseph
- Clinical Genetics Research Lab, Department of Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Beth Y Karlan
- David Geffen School of Medicine, Department of Obstetrics and Gynecology, University of California at Los Angeles, Los Angeles, CA, USA
| | - Zoe Kemp
- Breast and Cancer Genetics Units, The Royal Marsden NHS Foundation Trust, London, UK
| | - Judy Kirk
- Familial Cancer Service, Weatmead Hospital, Wentworthville, New South Wales, Australia
| | - Irene Konstantopoulou
- Molecular Diagnostics Laboratory, INRASTES, National Centre for Scientific Research 'Demokritos', Athens, Greece
| | - Marco Koudijs
- Department of Medical Genetics, University Medical Center, Utrecht, The Netherlands
| | - Ava Kwong
- Hong Kong Hereditary Breast Cancer Family Registry, Hong Kong, China
- Department of Surgery, The University of Hong Kong, Hong Kong, China
- Department of Surgery and Cancer Genetics Center, Hong Kong Sanatorium and Hospital, Hong Kong, China
| | - Yael Laitman
- The Susanne Levy Gertner Oncogenetics Unit, Chaim Sheba Medical Center, Ramat Gan, Israel
| | - Fiona Lalloo
- Department of Population Health Sciences, Weill Cornell Medicine, New York, NY, USA
| | - Christine Lasset
- Unité de Prévention et d'Epidémiologie Génétique, Centre Léon Bérard, Lyon, France
| | - Charlotte Lautrup
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus N, Denmark
| | - Conxi Lazaro
- Hereditary Cancer Program, Catalan Institute of Oncology (ICO), ONCOBELL-IDIBELL-IGTP, CIBERONC, Barcelona, Spain
| | | | - Goska Leslie
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Fabienne Lesueur
- Genetic Epidemiology of Cancer team, Inserm U900, Paris, France
- Institut Curie, Paris, France
- Mines ParisTech, Fontainebleau, France
| | - Phuong L Mai
- Magee-Womens Hospital, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Siranoush Manoukian
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori (INT), Milan, Italy
| | - Véronique Mari
- Département d'Hématologie-Oncologie Médicale, Centre Antoine Lacassagne, Nice, France
| | - John W M Martens
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Lesley McGuffog
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Noura Mebirouk
- Genetic Epidemiology of Cancer team, Inserm U900, Paris, France
- Institut Curie, Paris, France
- Mines ParisTech, Fontainebleau, France
| | - Alfons Meindl
- Department of Gynecology and Obstetrics, University of Munich, Campus Großhadern, Munich, Germany
| | - Austin Miller
- NRG Oncology, Statistics and Data Management Center, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Marco Montagna
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | - Lidia Moserle
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | | | - Hannah Musgrave
- Department of Clinical Genetics, Yorkshire Regional Genetics Service, Chapel Allerton Hospital, Leeds, UK
| | - Sophie Nambot
- Unité d'oncogénétique, Centre de Lutte Contre le Cancer, Centre Georges-François Leclerc, Dijon, France
| | - Katherine L Nathanson
- Basser Center for BRCA, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - Susan L Neuhausen
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Heli Nevanlinna
- Department of Obstetrics and Gynecology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Joanne Ngeow Yuen Yie
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Cancer Genetics Service, National Cancer Centre, Singapore, Singapore
| | - Tu Nguyen-Dumont
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia
- Department of Clinical Pathology, The University of Melbourne, Melbourne, Victoria, Australia
| | | | - Kenneth Offit
- Clinical Genetics Research Lab, Department of Cancer Biology and Genetics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Clinical Genetics Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Edith Olah
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary
| | | | - Ana Osorio
- Familial Cancer Clinical Unit, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO) and Spanish Network on Rare Diseases (CIBERER), Madrid, Spain
| | - Claus-Eric Ott
- Institute of Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Sue K Park
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
- Integrated Major in Innovative Medical Science, Seoul National University College of Medicine, Seoul, South Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Michael T Parsons
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Inge Sokilde Pedersen
- Molecular Diagnostics, Aalborg University Hospital, Aalborg, Denmark
- Clinical Cancer Research Center, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Ana Peixoto
- Department of Genetics, Portuguese Oncology Institute, Porto, Portugal
| | - Pedro Perez-Segura
- Molecular Oncology Laboratory, CIBERONC, Hospital Clinico San Carlos, IdISSC (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos), Madrid, Spain
| | - Paolo Peterlongo
- Genome Diagnostics Program, IFOM ETS - the AIRC Institute of Molecular Oncology, Milan, Italy
| | - Timea Pocza
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary
| | - Paolo Radice
- Unit of Molecular Bases of Genetic Risk and Genetic Testing, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori (INT), Milan, Italy
| | - Juliane Ramser
- Division of Gynaecology and Obstetrics, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | | | - Gustavo C Rodriguez
- Division of Gynecologic Oncology, NorthShore University HealthSystem, University of Chicago, Evanston, IL, USA
| | - Karina Rønlund
- Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle Hospital, Vejle, Denmark
| | - Efraim H Rosenberg
- Department of Pathology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Maria Rossing
- Center for Genomic Medicine, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Rita K Schmutzler
- Center for Integrated Oncology (CIO), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Familial Breast and Ovarian Cancer, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Payal D Shah
- Department of Medicine, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Saba Sharif
- West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Birmingham, UK
| | - Priyanka Sharma
- Department of Internal Medicine, Division of Medical Oncology, University of Kansas Medical Center, Westwood, KS, USA
| | | | - Jacques Simard
- Genomics Center, Centre Hospitalier Universitaire de Québec - Université Laval Research Center, Québec City, QC, Canada
| | - Christian F Singer
- Dept of OB/GYN and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Katie Snape
- Medical Genetics Unit, St George's, University of London, London, UK
| | - Doris Steinemann
- Institute of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Dominique Stoppa-Lyonnet
- Service de Génétique, Institut Curie, Paris, France
- Department of Tumour Biology, INSERM U830, Paris, France
- Université Paris Cité, Paris, France
| | - Christian Sutter
- Institute of Human Genetics, University Hospital Heidelberg, Heidelberg, Germany
| | - Yen Yen Tan
- Dept of OB/GYN and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Manuel R Teixeira
- Department of Genetics, Portuguese Oncology Institute, Porto, Portugal
- Biomedical Sciences Institute (ICBAS), University of Porto, Porto, Portugal
| | - Soo Hwang Teo
- Breast Cancer Research Programme, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
- Department of Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Mads Thomassen
- Department of Clinical Genetics, Odense University Hospital, Odence C, Denmark
| | - Darcy L Thull
- Department of Medicine, Magee-Womens Hospital, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Marc Tischkowitz
- Program in Cancer Genetics, Departments of Human Genetics and Oncology, McGill University, Montréal, QC, Canada
- Department of Medical Genetics, National Institute for Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, UK
| | - Amanda E Toland
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH, USA
| | - Alison H Trainer
- Parkville Familial Cancer Centre, Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
- Department of medicine, University Of Melbourne, Melbourne, Victoria, Australia
| | - Vishakha Tripathi
- South East Thames Regional Genetics Service, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Nadine Tung
- Department of Medical Oncology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Klaartje van Engelen
- Department of Clinical Genetics, VU University Medical Center, Amsterdam, The Netherlands
| | | | - Ana Vega
- Centro de Investigación en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- Fundación Pública Galega de Medicina Xenómica, Santiago de Compostela, Spain
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complejo Hospitalario Universitario de Santiago, SERGAS, Santiago de Compostela, Spain
| | - Alessandra Viel
- Division of Functional onco-genomics and genetics, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, Aviano, Italy
| | - Lisa Walker
- Oxford Regional Genetics Service, Churchill Hospital, Oxford, UK
| | - Jeffrey N Weitzel
- Latin American School of Oncology, Tuxtla Gutiérrez, Chiapas, Mexico
| | | | - Georgia Chenevix-Trench
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Amanda B Spurdle
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Antonis C Antoniou
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Logan C Walker
- Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand.
| |
Collapse
|
16
|
Abe A, Imoto I, Ueki A, Nomura H, Kanao H. Moderate-Risk Genes for Hereditary Ovarian Cancers Involved in the Homologous Recombination Repair Pathway. Int J Mol Sci 2022; 23:11790. [PMID: 36233090 PMCID: PMC9570179 DOI: 10.3390/ijms231911790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/17/2022] Open
Abstract
Approximately 20% of cases of epithelial ovarian cancer (EOC) are hereditary, sharing many causative genes with breast cancer. The lower frequency of EOC compared to breast cancer makes it challenging to estimate absolute or relative risk and verify the efficacy of risk-reducing surgery in individuals harboring germline pathogenic variants (GPV) in EOC predisposition genes, particularly those with relatively low penetrance. Here, we review the molecular features and hereditary tumor risk associated with several moderate-penetrance genes in EOC that are involved in the homologous recombination repair pathway, i.e., ATM, BRIP1, NBN, PALB2, and RAD51C/D. Understanding the molecular mechanisms underlying the expression and function of these genes may elucidate trends in the development and progression of hereditary tumors, including EOC. A fundamental understanding of the genes driving EOC can help us accurately estimate the genetic risk of developing EOC and select appropriate prevention and treatment strategies for hereditary EOC. Therefore, we summarize the functions of the candidate predisposition genes for EOC and discuss the clinical management of individuals carrying GPV in these genes.
Collapse
Affiliation(s)
- Akiko Abe
- Department of Gynecologic Oncology, Cancer Institute Hospital of JFCR, Tokyo 135-8550, Japan
| | - Issei Imoto
- Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan
| | - Arisa Ueki
- Clinical Genetic Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Hidetaka Nomura
- Department of Gynecologic Oncology, Cancer Institute Hospital of JFCR, Tokyo 135-8550, Japan
| | - Hiroyuki Kanao
- Department of Gynecologic Oncology, Cancer Institute Hospital of JFCR, Tokyo 135-8550, Japan
| |
Collapse
|
17
|
Kong Y, Akatsuka S, Motooka Y, Zheng H, Cheng Z, Shiraki Y, Mashimo T, Imaoka T, Toyokuni S. BRCA1 haploinsufficiency promotes chromosomal amplification under fenton reaction-based carcinogenesis through ferroptosis-resistance. Redox Biol 2022; 54:102356. [PMID: 35667247 PMCID: PMC9168618 DOI: 10.1016/j.redox.2022.102356] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 05/25/2022] [Indexed: 12/16/2022] Open
Abstract
Germline-mutation in BRCA1 tumor suppressor gene is an established risk for carcinogenesis not only in females but also in males. Deficiency in the repair of DNA double-strand breaks is hypothesized as a responsible mechanism for carcinogenesis. However, supporting data is insufficient both in the mutation spectra of cancers in the patients with BRCA1 germline-mutation and in murine knockout/knock-in models of Brca1 haploinsufficiency. Furthermore, information on the driving force toward carcinogenesis in BRCA1 mutation carriers is lacking. Here we applied Fenton reaction-based renal carcinogenesis to a rat heterozygously knockout model of BRCA1 haploinsufficiency (mutant [MUT] model; L63X/+). Rat MUT model revealed significant promotion of renal cell carcinoma (RCC) induced by ferric nitrilotriacetate (Fe-NTA). Array-based comparative genome hybridization of the RCCs identified significant increase in chromosomal amplification, syntenic to those in breast cancers of BRCA1 mutation carriers, including c-Myc, in comparison to those in the wild-type. Subacute-phase analysis of the kidney after repeated Fe-NTA treatment in the MUT model revealed dysregulated iron metabolism with mitochondrial malfunction assessed by expression microarray and electron microscopy, leading to renal tubular proliferation with iron overload. In conclusion, we for the first time demonstrate that biallelic wild-type BRCA1 provides more robust protection for mitochondrial metabolism under iron-catalyzed oxidative stress, preventing the emergence of neoplastic cells with chromosomal amplification. Our results suggest that oxidative stress via excess iron is a major driving force for carcinogenesis in BRCA1 haploinsufficiency, which can be a target for cancer prevention and therapeutics. Rat BRCA1 haploinsufficiency promoted Fenton reaction-based renal carcinogenesis. BRCA1 haploinsufficiency allowed chromosomal amplification under excess iron. BRCA1 haploinsufficiency caused more mitochondrial damage with ferroptosis resistance.
Collapse
|
18
|
Abstract
PURPOSE Current concepts regarding estrogen and its mechanistic effects on breast cancer in women are evolving. This article reviews studies that address estrogen-mediated breast cancer development, the prevalence of occult tumors at autopsy, and the natural history of breast cancer as predicted by a newly developed tumor kinetic model. METHODS This article reviews previously published studies from the authors and articles pertinent to the data presented. RESULTS We discuss the concepts of adaptive hypersensitivity that develops in response to long-term deprivation of estrogen and results in both increased cell proliferation and apoptosis. The effects of menopausal hormonal therapy on breast cancer in postmenopausal women are interpreted based on the tumor kinetic model. Studies of the administration of a tissue selective estrogen complex in vitro, in vivo, and in patients are described. We review the various clinical studies of breast cancer prevention with selective estrogen receptor modulators and aromatase inhibitors. Finally, the effects of the underlying risk of breast cancer on the effects of menopausal hormone therapy are outlined. DISCUSSION The overall intent of this review is to present data supporting recent concepts, discuss pertinent literature, and critically examine areas of controversy.
Collapse
|
19
|
Hu PZ, Chen XY, Xiong W, Yang ZJ, Li XR, Deng WZ, Gong LN, Deng H, Yuan LM. A BRCA1 Splice Site Variant Responsible for Familial Ovarian Cancer in a Han-Chinese Family. Curr Med Sci 2022; 42:666-672. [PMID: 35290602 DOI: 10.1007/s11596-022-2527-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 11/30/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Ovarian cancer (OC) is one of the most common and most lethal gynecological malignancies. OC has an age-dependent incidence and occurs more commonly in females older than 50 years old. Most OC patients are diagnosed at an advanced stage and have a poor prognosis. Germline mutations in the BRCA1 DNA repair associated gene (BRCA1) and the BRCA2 DNA repair associated gene (BRCA2) account for 20%-25% of epithelial ovarian cancer (EOC). BRCA1 germline mutations are more common in Chinese EOC patients. METHODS This study reported a three-generation Han-Chinese family containing four EOC patients and a rectal adenocarcinoma patient. Whole-exome sequencing was performed on two EOC patients and an unaffected individual. Variant validation was also performed in all available members by Sanger sequencing. RESULTS A heterozygous splice site variant, c.4358-2A>G in the BRCA1 gene, was identified. Bioinformatic analysis showed that the variant may change the splicing machinery. CONCLUSION The BRCA1 splice site variant, c.4358-2A>G was identified as the likely genetic cause for EOC, and may also be associated with the increased risk of rectal adenocarcinoma in the family. The findings were beneficial for genetic counseling, helpful for cancer prevention in other family members, and may facilitate therapy decision-making in the future to reduce cancer lethality.
Collapse
Affiliation(s)
- Peng-Zhi Hu
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Department of Radiology, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Xiang-Yu Chen
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Wei Xiong
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, 410078, China
| | - Zhi-Jian Yang
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Xiao-Rong Li
- Department of Gastrointestinal Surgery, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Wen-Zhi Deng
- Department of Pathology, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Li-Na Gong
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Hao Deng
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Disease Genome Research Center, Central South University, Changsha, 410013, China
| | - La-Mei Yuan
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, 410013, China.
| |
Collapse
|
20
|
Witus SR, Zhao W, Brzovic PS, Klevit RE. BRCA1/BARD1 is a nucleosome reader and writer. Trends Biochem Sci 2022; 47:582-595. [DOI: 10.1016/j.tibs.2022.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/14/2022] [Accepted: 03/01/2022] [Indexed: 02/08/2023]
|
21
|
Kim S, Hwang S. G-Quadruplex Matters in Tissue-Specific Tumorigenesis by BRCA1 Deficiency. Genes (Basel) 2022; 13:genes13030391. [PMID: 35327946 PMCID: PMC8948836 DOI: 10.3390/genes13030391] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 12/14/2022] Open
Abstract
How and why distinct genetic alterations, such as BRCA1 mutation, promote tumorigenesis in certain tissues, but not others, remain an important issue in cancer research. The underlying mechanisms may reveal tissue-specific therapeutic vulnerabilities. Although the roles of BRCA1, such as DNA damage repair and stalled fork stabilization, obviously contribute to tumor suppression, these ubiquitously important functions cannot explain tissue-specific tumorigenesis by BRCA1 mutations. Recent advances in our understanding of the cancer genome and fundamental cellular processes on DNA, such as transcription and DNA replication, have provided new insights regarding BRCA1-associated tumorigenesis, suggesting that G-quadruplex (G4) plays a critical role. In this review, we summarize the importance of G4 structures in mutagenesis of the cancer genome and cell type-specific gene regulation, and discuss a recently revealed molecular mechanism of G4/base excision repair (BER)-mediated transcriptional activation. The latter adequately explains the correlation between the accumulation of unresolved transcriptional regulatory G4s and multi-level genomic alterations observed in BRCA1-associated tumors. In summary, tissue-specific tumorigenesis by BRCA1 deficiency can be explained by cell type-specific levels of transcriptional regulatory G4s and the role of BRCA1 in resolving it. This mechanism would provide an integrated understanding of the initiation and development of BRCA1-associated tumors.
Collapse
Affiliation(s)
- Sanghyun Kim
- Department of Biomedical Science, College of Life Science, CHA University, Sungnam 13488, Korea;
| | - Sohyun Hwang
- Department of Biomedical Science, College of Life Science, CHA University, Sungnam 13488, Korea;
- Department of Pathology, CHA Bundang Medical Center, CHA University School of Medicine, Sungnam 13496, Korea
- Correspondence:
| |
Collapse
|
22
|
BRCA1/Trp53 heterozygosity and replication stress drive esophageal cancer development in a mouse model. Proc Natl Acad Sci U S A 2021; 118:2108421118. [PMID: 34607954 PMCID: PMC8521688 DOI: 10.1073/pnas.2108421118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2021] [Indexed: 12/13/2022] Open
Abstract
BRCA1 germline mutations are associated with an increased risk of breast and ovarian cancer. Recent findings of others suggest that BRCA1 mutation carriers also bear an increased risk of esophageal and gastric cancer. Here, we employ a Brca1/Trp53 mouse model to show that unresolved replication stress (RS) in BRCA1 heterozygous cells drives esophageal tumorigenesis in a model of the human equivalent. This model employs 4-nitroquinoline-1-oxide (4NQO) as an RS-inducing agent. Upon drinking 4NQO-containing water, Brca1 heterozygous mice formed squamous cell carcinomas of the distal esophagus and forestomach at a much higher frequency and speed (∼90 to 120 d) than did wild-type (WT) mice, which remained largely tumor free. Their esophageal tissue, but not that of WT control mice, revealed evidence of overt RS as reflected by intracellular CHK1 phosphorylation and 53BP1 staining. These Brca1 mutant tumors also revealed higher genome mutation rates than those of control animals; the mutational signature SBS4, which is associated with tobacco-induced tumorigenesis; and a loss of Brca1 heterozygosity (LOH). This uniquely accelerated Brca1 tumor model is also relevant to human esophageal squamous cell carcinoma, an often lethal tumor.
Collapse
|
23
|
The BRCA1/BARD1 ubiquitin ligase and its substrates. Biochem J 2021; 478:3467-3483. [PMID: 34591954 DOI: 10.1042/bcj20200864] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/03/2021] [Accepted: 09/07/2021] [Indexed: 12/19/2022]
Abstract
Mutations in breast cancer type 1 susceptibility protein (BRCA1) and its heterodimeric binding partner BARD1 confer a high risk for the development of breast and ovarian cancers. The sole enzymatic function of the BRCA1/BARD1 complex is as a RING-type E3 ubiquitin (Ub) ligase, leading to the deposition of Ub signals onto a variety of substrate proteins. Distinct types of Ub signals deposited by BRCA1/BARD1 (i.e. degradative vs. non-degradative; mono-Ub vs. poly-Ub chains) on substrate proteins mediate aspects of its function in DNA double-stranded break repair, cell-cycle regulation, and transcriptional regulation. While cancer-predisposing mutations in both subunits lead to the inactivation of BRCA1/BARD1 ligase activity, controversy remains as to whether its Ub ligase activity directly inhibits tumorigenesis. Investigation of BRCA1/BARD1 substrates using rigorous, well-validated mutants and experimental systems will ultimately clarify the role of its ligase activity in cancer and possibly establish prognostic and diagnostic metrics for patients with mutations. In this review, we discuss the Ub ligase function of BRCA1/BARD1, highlighting experimental approaches, mechanistic considerations, and reagents that are useful in the study of substrate ubiquitylation. We also discuss the current understanding of two well-established BRCA1/BARD1 substrates (nucleosomal H2A and estrogen receptor α) and several recently discovered substrates (p50, NF2, Oct1, and LARP7). Lessons from the current body of work should provide a road map to researchers examining novel substrates and biological functions attributed to BRCA1/BARD1 Ub ligase activity.
Collapse
|
24
|
Transcription/Replication Conflicts in Tumorigenesis and Their Potential Role as Novel Therapeutic Targets in Multiple Myeloma. Cancers (Basel) 2021; 13:cancers13153755. [PMID: 34359660 PMCID: PMC8345052 DOI: 10.3390/cancers13153755] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/13/2021] [Accepted: 07/22/2021] [Indexed: 12/24/2022] Open
Abstract
Simple Summary Multiple myeloma is a hematologic cancer characterized by the accumulation of malignant plasma cells in the bone marrow. It remains a mostly incurable disease due to the inability to overcome refractory disease and drug-resistant relapse. Oncogenic transformation of PC in multiple myeloma is thought to occur within the secondary lymphoid organs. However, the precise molecular events leading to myelomagenesis remain obscure. Here, we identified genes involved in the prevention and the resolution of conflicts between the replication and transcription significantly overexpressed during the plasma cell differentiation process and in multiple myeloma cells. We discussed the potential role of these factors in myelomagenesis and myeloma biology. The specific targeting of these factors might constitute a new therapeutic strategy in multiple myeloma. Abstract Plasma cells (PCs) have an essential role in humoral immune response by secretion of antibodies, and represent the final stage of B lymphocytes differentiation. During this differentiation, the pre-plasmablastic stage is characterized by highly proliferative cells that start to secrete immunoglobulins (Igs). Thus, replication and transcription must be tightly regulated in these cells to avoid transcription/replication conflicts (TRCs), which could increase replication stress and lead to genomic instability. In this review, we analyzed expression of genes involved in TRCs resolution during B to PC differentiation and identified 41 genes significantly overexpressed in the pre-plasmablastic stage. This illustrates the importance of mechanisms required for adequate processing of TRCs during PCs differentiation. Furthermore, we identified that several of these factors were also found overexpressed in purified PCs from patients with multiple myeloma (MM) compared to normal PCs. Malignant PCs produce high levels of Igs concomitantly with cell cycle deregulation. Therefore, increasing the TRCs occurring in MM cells could represent a potent therapeutic strategy for MM patients. Here, we describe the potential roles of TRCs resolution factors in myelomagenesis and discuss the therapeutic interest of targeting the TRCs resolution machinery in MM.
Collapse
|
25
|
Rauner G, Kuperwasser C. Microenvironmental control of cell fate decisions in mammary gland development and cancer. Dev Cell 2021; 56:1875-1883. [PMID: 34256927 DOI: 10.1016/j.devcel.2021.06.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/17/2021] [Accepted: 06/17/2021] [Indexed: 12/28/2022]
Abstract
Cell fate decisions are critical for adequate tissue development, maintenance and regeneration. In the mammary gland, epithelial cell fates are tightly controlled by the microenvironment. Here, we review how cell fate decisions are regulated by components of the microenvironment during mammary gland development and how pathological changes in the microenvironment can alter cell fates, leading to malignancy. Specifically, we describe the current understanding of how mammary cell fate is controlled and directed by three elements: the extracellular matrix, the immune microenvironment, and hormones-and how these elements can converge to create microenvironments that promote a fourth element: DNA damage.
Collapse
Affiliation(s)
- Gat Rauner
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Charlotte Kuperwasser
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA 02111, USA; Laboratory for the Convergence of Biomedical, Physical, and Engineering Sciences, Tufts University School of Medicine, Boston, MA 02111, USA.
| |
Collapse
|
26
|
Current update on the molecular genetics and management of hereditary ovarian cancers: a primer for radiologists. Abdom Radiol (NY) 2021; 46:2281-2292. [PMID: 33847772 DOI: 10.1007/s00261-020-02911-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 12/09/2020] [Accepted: 12/11/2020] [Indexed: 12/24/2022]
Abstract
More than one-fifth of ovarian cancers are hereditary, with most of them caused by BRCA genes. Malignant ovarian neoplasms are primarily epithelial tumors, a heterogeneous group of tumors with variable genetic backgrounds that translate into different biologic behaviors and morphologic features. Radiologists play an increasingly important role in the diagnosis and management of oncology patients. Familiarity with hereditary ovarian cancers will have a positive impact on patient management and radiologists' involvement in the multidisciplinary approach needed for this delicate patient population. In this paper, we review the basic histologic and genetic backgrounds of ovarian tumors with an emphasis on hereditary ovarian cancers, as well as the effects that these factors have on patient workup, primarily with regard to imaging studies.
Collapse
|
27
|
Leung E, Hazrati LN. Breast cancer type 1 and neurodegeneration: consequences of deficient DNA repair. Brain Commun 2021; 3:fcab117. [PMID: 34222870 PMCID: PMC8242133 DOI: 10.1093/braincomms/fcab117] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/09/2021] [Accepted: 04/13/2021] [Indexed: 12/20/2022] Open
Abstract
Numerous cellular processes, including toxic protein aggregation and oxidative stress, have been studied extensively as potential mechanisms underlying neurodegeneration. However, limited therapeutic efficacy targeting these processes has prompted other mechanisms to be explored. Previous research has emphasized a link between cellular senescence and neurodegeneration, where senescence induced by excess DNA damage and deficient DNA repair results in structural and functional changes that ultimately contribute to brain dysfunction and increased vulnerability for neurodegeneration. Specific DNA repair proteins, such as breast cancer type 1, have been associated with both stress-induced senescence and neurodegenerative diseases, however, specific mechanisms remain unclear. Therefore, this review explores DNA damage-induced senescence in the brain as a driver of neurodegeneration, with particular focus on breast cancer type 1, and its potential contribution to sex-specific differences associated with neurodegenerative disease.
Collapse
Affiliation(s)
- Emily Leung
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 Kings College Cir, Toronto, ON M5S 1A8, Canada
- The Hospital for Sick Children, 555 University Ave, Toronto, ON M5G 1X8, Canada
| | - Lili-Naz Hazrati
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 Kings College Cir, Toronto, ON M5S 1A8, Canada
- The Hospital for Sick Children, 555 University Ave, Toronto, ON M5G 1X8, Canada
| |
Collapse
|
28
|
Schwab N, Ju Y, Hazrati LN. Early onset senescence and cognitive impairment in a murine model of repeated mTBI. Acta Neuropathol Commun 2021; 9:82. [PMID: 33964983 PMCID: PMC8106230 DOI: 10.1186/s40478-021-01190-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/03/2021] [Indexed: 12/19/2022] Open
Abstract
Mild traumatic brain injury (mTBI) results in broad neurological symptoms and an increased risk of being diagnosed with a neurodegenerative disease later in life. While the immediate oxidative stress response and post-mortem pathology of the injured brain has been well studied, it remains unclear how early pathogenic changes may drive persistent symptoms and confer susceptibility to neurodegeneration. In this study we have used a mouse model of repeated mTBI (rmTBI) to identify early gene expression changes at 24 h or 7 days post-injury (7 dpi). At 24 h post-injury, gene expression of rmTBI mice shows activation of the DNA damage response (DDR) towards double strand DNA breaks, altered calcium and cell–cell signalling, and inhibition of cell death pathways. By 7 dpi, rmTBI mice had a gene expression signature consistent with induction of cellular senescence, activation of neurodegenerative processes, and inhibition of the DDR. At both timepoints gliosis, microgliosis, and axonal damage were evident in the absence of any gross lesion, and by 7 dpi rmTBI also mice had elevated levels of IL1β, p21, 53BP1, DNA2, and p53, supportive of DNA damage-induced cellular senescence. These gene expression changes reflect establishment of processes usually linked to brain aging and suggests that cellular senescence occurs early and most likely prior to the accumulation of toxic proteins. These molecular changes were accompanied by spatial learning and memory deficits in the Morris water maze. To conclude, we have identified DNA damage-induced cellular senescence as a repercussion of repeated mild traumatic brain injury which correlates with cognitive impairment. Pathways involved in senescence may represent viable treatment targets of post-concussive syndrome. Senescence has been proposed to promote neurodegeneration and appears as an effective target to prevent long-term complications of mTBI, such as chronic traumatic encephalopathy and other related neurodegenerative pathologies.
Collapse
|
29
|
Bhardwaj P, Brown KA. Obese Adipose Tissue as a Driver of Breast Cancer Growth and Development: Update and Emerging Evidence. Front Oncol 2021; 11:638918. [PMID: 33859943 PMCID: PMC8042134 DOI: 10.3389/fonc.2021.638918] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/12/2021] [Indexed: 12/24/2022] Open
Abstract
Obesity is an established risk factor for breast cancer growth and progression. A number of advances have been made in recent years revealing new insights into this link. Early events in breast cancer development involve the neoplastic transformation of breast epithelial cells to cancer cells. In obesity, breast adipose tissue undergoes significant hormonal and inflammatory changes that create a mitogenic microenvironment. Many factors that are produced in obesity have also been shown to promote tumorigenesis. Given that breast epithelial cells are surrounded by adipose tissue, the crosstalk between the adipose compartment and breast epithelial cells is hypothesized to be a significant player in the initiation and progression of breast cancer in individuals with excess adiposity. The present review examines this crosstalk with a focus on obese breast adipose-derived estrogen, inflammatory mediators and adipokines, and how they are mechanistically linked to breast cancer risk and growth through stimulation of oxidative stress, DNA damage, and pro-oncogenic transcriptional programs. Pharmacological and lifestyle strategies targeting these factors and their downstream effects are evaluated for feasibility and efficacy in decreasing the risk of obesity-induced breast epithelial cell transformation and consequently, breast cancer development.
Collapse
Affiliation(s)
- Priya Bhardwaj
- Department of Medicine, Weill Cornell Medicine, New York, NY, United States
- Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY, United States
| | - Kristy A. Brown
- Department of Medicine, Weill Cornell Medicine, New York, NY, United States
- Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY, United States
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| |
Collapse
|
30
|
Pescatori S, Berardinelli F, Albanesi J, Ascenzi P, Marino M, Antoccia A, di Masi A, Acconcia F. A Tale of Ice and Fire: The Dual Role for 17β-Estradiol in Balancing DNA Damage and Genome Integrity. Cancers (Basel) 2021; 13:1583. [PMID: 33808099 PMCID: PMC8036963 DOI: 10.3390/cancers13071583] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/24/2021] [Accepted: 03/26/2021] [Indexed: 12/21/2022] Open
Abstract
17β-estradiol (E2) regulates human physiology both in females and in males. At the same time, E2 acts as a genotoxic substance as it could induce DNA damages, causing the initiation of cellular transformation. Indeed, increased E2 plasma levels are a risk factor for the development of several types of cancers including breast cancer. This paradoxical identity of E2 undermines the foundations of the physiological definition of "hormone" as E2 works both as a homeostatic regulator of body functions and as a genotoxic compound. Here, (i) the molecular circuitries underlying this double face of E2 are reviewed, and (ii) a possible framework to reconcile the intrinsic discrepancies of the E2 function is reported. Indeed, E2 is a regulator of the DNA damage response, which this hormone exploits to calibrate its genotoxicity with its physiological effects. Accordingly, the genes required to maintain genome integrity belong to the E2-controlled cellular signaling network and are essential for the appearance of the E2-induced cellular effects. This concept requires an "upgrade" to the vision of E2 as a "genotoxic hormone", which balances physiological and detrimental pathways to guarantee human body homeostasis. Deregulation of this equilibrium between cellular pathways would determine the E2 pathological effects.
Collapse
Affiliation(s)
- Sara Pescatori
- Department of Sciences, Section Biomedical Sciences, and Technology, University Roma Tre, Viale Guglielmo Marconi, 446, I-00146 Rome, Italy; (S.P.); (F.B.); (J.A.); (P.A.); (M.M.)
| | - Francesco Berardinelli
- Department of Sciences, Section Biomedical Sciences, and Technology, University Roma Tre, Viale Guglielmo Marconi, 446, I-00146 Rome, Italy; (S.P.); (F.B.); (J.A.); (P.A.); (M.M.)
- Neurodevelopment, Neurogenetics and Molecular Neurobiology Unit, IRCCS Santa Lucia Foundation, 00143 Rome, Italy
| | - Jacopo Albanesi
- Department of Sciences, Section Biomedical Sciences, and Technology, University Roma Tre, Viale Guglielmo Marconi, 446, I-00146 Rome, Italy; (S.P.); (F.B.); (J.A.); (P.A.); (M.M.)
| | - Paolo Ascenzi
- Department of Sciences, Section Biomedical Sciences, and Technology, University Roma Tre, Viale Guglielmo Marconi, 446, I-00146 Rome, Italy; (S.P.); (F.B.); (J.A.); (P.A.); (M.M.)
- Neuroendocrinology, Metabolism and Neuropharmacology Unit, IRCCS Santa Lucia Foundation, 00143 Rome, Italy
| | - Maria Marino
- Department of Sciences, Section Biomedical Sciences, and Technology, University Roma Tre, Viale Guglielmo Marconi, 446, I-00146 Rome, Italy; (S.P.); (F.B.); (J.A.); (P.A.); (M.M.)
- Neuroendocrinology, Metabolism and Neuropharmacology Unit, IRCCS Santa Lucia Foundation, 00143 Rome, Italy
| | - Antonio Antoccia
- Department of Sciences, Section Biomedical Sciences, and Technology, University Roma Tre, Viale Guglielmo Marconi, 446, I-00146 Rome, Italy; (S.P.); (F.B.); (J.A.); (P.A.); (M.M.)
| | - Alessandra di Masi
- Department of Sciences, Section Biomedical Sciences, and Technology, University Roma Tre, Viale Guglielmo Marconi, 446, I-00146 Rome, Italy; (S.P.); (F.B.); (J.A.); (P.A.); (M.M.)
| | - Filippo Acconcia
- Department of Sciences, Section Biomedical Sciences, and Technology, University Roma Tre, Viale Guglielmo Marconi, 446, I-00146 Rome, Italy; (S.P.); (F.B.); (J.A.); (P.A.); (M.M.)
| |
Collapse
|
31
|
Iyengar NM, Zhou XK, Mendieta H, El-Hely O, Giri DD, Winston L, Falcone DJ, Wang H, Meng L, Ha T, Pollak M, Morrow M, Dannenberg AJ. Effects of obesity on breast aromatase expression and systemic metabo-inflammation in women with BRCA1 or BRCA2 mutations. NPJ Breast Cancer 2021; 7:18. [PMID: 33649363 PMCID: PMC7921427 DOI: 10.1038/s41523-021-00226-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 01/13/2021] [Indexed: 02/07/2023] Open
Abstract
Obesity is associated with an increased risk of breast cancer in post-menopausal women and decreased risk in pre-menopausal women. Conversely, in BRCA1/2 mutation carriers, pre-menopausal obesity is associated with early-onset breast cancer. Here we show that obese, pre-menopausal BRCA1/2 mutation carriers have increased levels of aromatase and inflammation in the breast, as occurs in post-menopausal women. In a prospective cohort study of 141 women with germline BRCA1 (n = 74) or BRCA2 (n = 67) mutations, leptin, and aromatase expression were higher in the breast tissue of obese versus lean individuals (P < 0.05). Obesity was associated with breast white adipose tissue inflammation, which correlated with breast aromatase levels (P < 0.01). Circulating C-reactive protein, interleukin-6, and leptin positively correlated with body mass index and breast aromatase levels, whereas negative correlations were observed for adiponectin and sex hormone-binding globulin (P < 0.05). These findings could help explain the increased risk of early-onset breast cancer in obese BRCA1/2 mutation carriers.
Collapse
Affiliation(s)
- Neil M Iyengar
- Departments of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Departments of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Xi Kathy Zhou
- Departments of Population Health Sciences, Weill Cornell Medical College, New York, NY, USA
| | - Hillary Mendieta
- Departments of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Omar El-Hely
- Departments of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Dilip D Giri
- Departments of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Lisle Winston
- Departments of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Domenick J Falcone
- Departments of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Hanhan Wang
- Departments of Population Health Sciences, Weill Cornell Medical College, New York, NY, USA
| | - Lingsong Meng
- Departments of Population Health Sciences, Weill Cornell Medical College, New York, NY, USA
| | - Taehoon Ha
- Departments of Population Health Sciences, Weill Cornell Medical College, New York, NY, USA
| | - Michael Pollak
- Departments of Medicine and Oncology, McGill University, Montreal, QC, Canada
| | - Monica Morrow
- Departments of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | |
Collapse
|
32
|
Zhou J, Zhou XA, Zhang N, Wang J. Evolving insights: how DNA repair pathways impact cancer evolution. Cancer Biol Med 2020; 17:805-827. [PMID: 33299637 PMCID: PMC7721097 DOI: 10.20892/j.issn.2095-3941.2020.0177] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/10/2020] [Indexed: 12/17/2022] Open
Abstract
Viewing cancer as a large, evolving population of heterogeneous cells is a common perspective. Because genomic instability is one of the fundamental features of cancer, this intrinsic tendency of genomic variation leads to striking intratumor heterogeneity and functions during the process of cancer formation, development, metastasis, and relapse. With the increased mutation rate and abundant diversity of the gene pool, this heterogeneity leads to cancer evolution, which is the major obstacle in the clinical treatment of cancer. Cells rely on the integrity of DNA repair machineries to maintain genomic stability, but these machineries often do not function properly in cancer cells. The deficiency of DNA repair could contribute to the generation of cancer genomic instability, and ultimately promote cancer evolution. With the rapid advance of new technologies, such as single-cell sequencing in recent years, we have the opportunity to better understand the specific processes and mechanisms of cancer evolution, and its relationship with DNA repair. Here, we review recent findings on how DNA repair affects cancer evolution, and discuss how these mechanisms provide the basis for critical clinical challenges and therapeutic applications.
Collapse
Affiliation(s)
- Jiadong Zhou
- Department of Radiation Medicine, Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Xiao Albert Zhou
- Department of Radiation Medicine, Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Ning Zhang
- Laboratory of Cancer Cell Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China.,Biomedical Pioneering Innovation Center (BIOPIC) and Translational Cancer Research Center, School of Life Sciences, First Hospital, Peking University, Beijing 100871, China
| | - Jiadong Wang
- Department of Radiation Medicine, Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| |
Collapse
|
33
|
Ferrell SD, Ahmad I, Nguyen C, Petrova SC, Wilhelm SR, Ye Y, Barsky SH. Why is cancer so common a disease in people yet so rare at a cellular level? Med Hypotheses 2020; 144:110171. [PMID: 33254495 DOI: 10.1016/j.mehy.2020.110171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/06/2020] [Indexed: 11/17/2022]
Abstract
Cancers are common diseases in people and yet, on a cellular level, are quite rare. The vast majority of both sporadic, spontaneous cancers and inherited germline cancers arise in single foci from singly transformed cells despite the fact that, in the former, carcinogenic factors bathe fields of millions of potential target cells and, in the latter, the predisposing germline mutations are present in every cell of a given organ and, in fact, every cell of the body. Although the multi-hit theory of carcinogenesis has been invoked to explain such things as cancer latency, which is the period between cancer initiation and emergence and the cancer-aging relationship where an accumulation of "hits" over a period of time are necessary for cancer emergence, the multi-hit theory falls short in explaining the rareness of transformation at a cellular level. This is so because many cancers are not due to multiple hits, and even for those that are, it would be expected that many cells would be exposed to those factors inducing the hits. Although the tumor stem/progenitor cell compartmental theory of tumorigenesis characterizes a tumor compartment that is capable of self-renewal and multipotency, accounting for cancer relapses and recurrences, this compartmental theory alone cannot account for the rareness of initial transformation at a cellular level as the cancer stem/progenitor cell compartment is already transformed and considerable in size. This study advances a different and novel hypothesis that oncogenesis is regulated and ultimately determined by a cell of origin's critical state of differentiation. Before and after this critical state of differentiation has been reached, target cells cannot transform and give rise to cancer even when they receive the necessary carcinogenic insults or have the requisite transforming tumor suppressor genes or oncogenes. As support for this hypothesis, the study cites preliminary evidence using oncogene-containing transgenic mice that develop mammary carcinomas, to derive tail vein fibroblasts converted to iPSCs which, when left undifferentiated, and injected into the cleared fat pads of non-transgenic background mice give rise to mammary gland ontogeny and mammary gland carcinogenesis. However, when first differentiated in vitro into multiply different non-mammary lineages prior to injection, they fail to do so. The hypothesis has widespread implications for chemopreventive strategies.
Collapse
Affiliation(s)
- Stuart D Ferrell
- Cancer Center and Institute for Personalized Medicine, California University of Science and Medicine, 1501 Violet Street, Colton, CA 92324, USA
| | - Ihsaan Ahmad
- Cancer Center and Institute for Personalized Medicine, California University of Science and Medicine, 1501 Violet Street, Colton, CA 92324, USA
| | - Christine Nguyen
- Cancer Center and Institute for Personalized Medicine, California University of Science and Medicine, 1501 Violet Street, Colton, CA 92324, USA
| | - Sarah C Petrova
- Cancer Center and Institute for Personalized Medicine, California University of Science and Medicine, 1501 Violet Street, Colton, CA 92324, USA
| | - Sabrina R Wilhelm
- Cancer Center and Institute for Personalized Medicine, California University of Science and Medicine, 1501 Violet Street, Colton, CA 92324, USA
| | - Yin Ye
- Cancer Center and Institute for Personalized Medicine, California University of Science and Medicine, 1501 Violet Street, Colton, CA 92324, USA
| | - Sanford H Barsky
- Cancer Center and Institute for Personalized Medicine, California University of Science and Medicine, 1501 Violet Street, Colton, CA 92324, USA.
| |
Collapse
|
34
|
Breast-Specific Epigenetic Regulation of DeltaNp73 and Its Role in DNA-Damage-Response of BRCA1-Mutated Human Mammary Epithelial Cells. Cancers (Basel) 2020; 12:cancers12092367. [PMID: 32825620 PMCID: PMC7564633 DOI: 10.3390/cancers12092367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/13/2020] [Accepted: 08/18/2020] [Indexed: 12/13/2022] Open
Abstract
The function of BRCA1/2 proteins is essential for maintaining genomic integrity in all cell types. However, why women who carry deleterious germline mutations in BRCA face an extremely high risk of developing breast and ovarian cancers specifically has remained an enigma. We propose that breast-specific epigenetic modifications, which regulate tissue differentiation, could team up with BRCA deficiency and affect tissue susceptibility to cancer. In earlier work, we compared genome-wide methylation profiles of various normal epithelial tissues and identified breast-specific methylated gene promoter regions. Here, we focused on deltaNp73, the truncated isoform of p73, which possesses antiapoptotic and pro-oncogenic functions. We showed that the promoter of deltaNp73 is unmethylated in normal human breast epithelium and methylated in various other normal epithelial tissues and cell types. Accordingly, deltaNp73 was markedly induced by DNA damage in human mammary epithelial cells (HMECs) but not in other epithelial cell types. Moreover, the induction of deltaNp73 protected HMECs from DNA damage-induced cell death, and this effect was more substantial in HMECs from BRCA1 mutation carriers. Notably, when BRCA1 was knocked down in MCF10A, a non-malignant breast epithelial cell line, both deltaNp73 induction and its protective effect from cell death were augmented upon DNA damage. Interestingly, deltaNp73 induction also resulted in inhibition of BRCA1 and BRCA2 expression following DNA damage. In conclusion, breast-specific induction of deltaNp73 promotes survival of BRCA1-deficient mammary epithelial cells upon DNA damage. This might result in the accumulation of genomic alterations and allow the outgrowth of breast cancers. These findings indicate deltaNp73 as a potential modifier of breast cancer susceptibility in BRCA1 mutation carriers and may stimulate novel strategies of prevention and treatment for these high-risk women.
Collapse
|
35
|
Bianchi JJ, Zhao X, Mays JC, Davoli T. Not all cancers are created equal: Tissue specificity in cancer genes and pathways. Curr Opin Cell Biol 2020; 63:135-143. [PMID: 32092639 PMCID: PMC7247947 DOI: 10.1016/j.ceb.2020.01.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/02/2020] [Accepted: 01/07/2020] [Indexed: 12/22/2022]
Abstract
Tumors arise through waves of genetic alterations and clonal expansion that allow tumor cells to acquire cancer hallmarks, such as genome instability and immune evasion. Recent genomic analyses showed that the vast majority of cancer driver genes are mutated in a tissue-dependent manner, that is, are altered in some cancers but not others. Often the tumor type also affects the likelihood of therapy response. What is the origin of tissue specificity in cancer? Recent studies suggest that both cell-intrinsic and cell-extrinsic factors play a role. On one hand, cell type-specific wiring of the cell signaling network determines the outcome of cancer driver gene mutations. On the other hand, the tumor cells' exposure to tissue-specific microenvironments (e.g. immune cells) also contributes to shape the tissue specificity of driver genes and of therapy response. In the future, a more complete understanding of tissue specificity in cancer may inform methods to better predict and improve therapeutic outcomes.
Collapse
Affiliation(s)
- Joy J Bianchi
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Langone Health, New York, 10016, USA
| | - Xin Zhao
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Langone Health, New York, 10016, USA
| | - Joseph C Mays
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Langone Health, New York, 10016, USA
| | - Teresa Davoli
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Langone Health, New York, 10016, USA.
| |
Collapse
|
36
|
Cell-type-specific role of CHK2 in mediating DNA damage-induced G2 cell cycle arrest. Oncogenesis 2020; 9:35. [PMID: 32170104 PMCID: PMC7070093 DOI: 10.1038/s41389-020-0219-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 02/27/2020] [Accepted: 02/27/2020] [Indexed: 11/17/2022] Open
Abstract
Cancer is a life-threatening disease that affects one in three people. Although most cases are sporadic, cancer risk can be increased by genetic factors. It remains unknown why certain genes predispose for specific forms of cancer only, such as checkpoint protein 2 (CHK2), in which gene mutations convey up to twofold higher risk for breast cancer but do not increase lung cancer risk. We have investigated the role of CHK2 and the related kinase checkpoint protein 1 (CHK1) in cell cycle regulation in primary breast and lung primary epithelial cells. At the molecular level, CHK1 activity was higher in lung cells, whereas CHK2 was more active in breast cells. Inhibition of CHK1 profoundly disrupted the cell cycle profile in both lung and breast cells, whereas breast cells were more sensitive toward inhibition of CHK2. Finally, we provide evidence that breast cells require CHK2 to induce a G2–M cell cycle arrest in response of DNA damage, whereas lung cells can partially compensate for the loss of CHK2. Our results provide an explanation as to why CHK2 germline mutations predispose for breast cancer but not for lung cancer.
Collapse
|
37
|
Majhi PD, Sharma A, Roberts AL, Daniele E, Majewski AR, Chuong LM, Black AL, Vandenberg LN, Schneider SS, Dunphy KA, Jerry DJ. Effects of Benzophenone-3 and Propylparaben on Estrogen Receptor-Dependent R-Loops and DNA Damage in Breast Epithelial Cells and Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2020; 128:17002. [PMID: 31939680 PMCID: PMC7015622 DOI: 10.1289/ehp5221] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
BACKGROUND Endocrine-disrupting chemicals have been shown to have broad effects on development, but their mutagenic actions that can lead to cancer have been less clearly demonstrated. Physiological levels of estrogen have been shown to stimulate DNA damage in breast epithelial cells through mechanisms mediated by estrogen-receptor alpha (ERα). Benzophenone-3 (BP-3) and propylparaben (PP) are xenoestrogens found in the urine of >96% of U.S. OBJECTIVES We investigated the effect of BP-3 and PP on estrogen receptor-dependent transactivation and DNA damage at concentrations relevant to exposures in humans. METHODS In human breast epithelial cells, DNA damage following treatment with 17β-estradiol (E2), BP-3, and PP was determined by immunostaining with antibodies against γ-H2AX and 53BP1. Estrogenic responses were determined using luciferase reporter assays and gene expression. Formation of R-loops was determined with DNA: RNA hybrid-specific S9.6 antibody. Short-term exposure to the chemicals was also studied in ovariectomized mice. Immunostaining of mouse mammary epithelium was performed to quantify R-loops and DNA damage in vivo. RESULTS Concentrations of 1μM and 5μM BP-3 or PP increased DNA damage similar to that of E2 treatment in a ERα-dependent manner. However, BP-3 and PP had limited transactivation of target genes at 1μM and 5μM concentrations. BP-3 and PP exposure caused R-loop formation in a normal human breast epithelial cell line when ERα was introduced. R-loops and DNA damage were also detected in mammary epithelial cells of mice treated with BP-3 and PP. CONCLUSIONS Acute exposure to xenoestrogens (PP and BP-3) in mice induce DNA damage mediated by formation of ERα-dependent R-loops at concentrations 10-fold lower than those required for transactivation. Exposure to these xenoestrogens may cause deleterious estrogenic responses, such as DNA damage, in susceptible individuals. https://doi.org/10.1289/EHP5221.
Collapse
Affiliation(s)
- Prabin Dhangada Majhi
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
- Department of Botany, Ravenshaw University, Cuttack, Odisha, India
| | - Aman Sharma
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Amy L. Roberts
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Elizabeth Daniele
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Aliza R. Majewski
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Lynn M. Chuong
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Amye L. Black
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Laura N. Vandenberg
- Department of Environmental Health Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Sallie S. Schneider
- University of Massachusetts Medical School, Baystate Campus, Springfield, Massachusetts, USA
- Pioneer Valley Life Sciences Institute, Springfield, Massachusetts, USA
| | - Karen A. Dunphy
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - D. Joseph Jerry
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
- Pioneer Valley Life Sciences Institute, Springfield, Massachusetts, USA
| |
Collapse
|
38
|
Impact of BRCA1 and BRCA2 mutations on ovarian reserve and fertility preservation outcomes in young women with breast cancer. J Assist Reprod Genet 2019; 37:709-715. [PMID: 31872386 PMCID: PMC7125060 DOI: 10.1007/s10815-019-01658-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 12/12/2019] [Indexed: 02/07/2023] Open
Abstract
Purpose To determine the impact of BRCA1 and BRCA2 mutations on ovarian reserve and fertility preservation outcome. The main purpose and research question of the study is to determine the impact of BRCA1 and BRCA2 mutations on ovarian reserve and fertility preservation outcomes. Methods Prospective study: 67 breast cancer patients between 18 and 40 years old, undergoing a fertility preservation by means of oocyte storage were considered. Inclusions criteria for the study were age between 18 and 40 years old, BMI between 18 and 28, breast cancer neoplasm stage I and II according to American Joint Committee on Cancer classification (2017) and no metastasis. Exclusion criteria: age over 40 years old, BMI < 18 and > 28, breast cancer neoplasm stage III and IV and do not performed the BRCA test. A total of 21 patients had not performed the test and were excluded. Patients were divided into four groups: Group A was composed by 11 breast cancer patients with BRCA 1 mutations, Group B was composed by 11 breast cancer patients with BRCA 2 mutations, Group C was composed by 24 women with breast cancer without BRCA mutations, and Group D (control) was composed by 181 normal women. Results Group A showed significant lower AMH levels compared to Group C and D (1.2 ± 1.1 vs 4.5 ± 4.1 p < 0.05 and 1.2 ± 1.1 vs 3.8 ± 2.5 p < 0.05). BRCA1 mutated patients showed a significant lower rate of mature oocytes (MII) compared to Group C (3.1 ± 2.3 vs 7.2 ± 4.4 p < 0,05) and Group D (3.1 ± 2.3 vs 7.3 ± 3.4; p < 0,05). Breast cancer patients needed a higher dose of gonadotropins compared to controls (Group A 2206 ± 1392 Group B2047.5 ± 829.9 Group C 2106 ± 1336 Group D 1597 ± 709 p < 0,05). No significant differences were found among the groups considering basal FSH levels, duration of stimulation, number of developed follicles, and number of total retrieved oocytes. Regarding BRCA2 mutation, no effect on fertility was shown in this study. Conclusions The study showed that BRCA1 patients had a higher risk of premature ovarian insufficiency (POI) confirmed by a diminished ovarian reserve and a lower number of mature oocytes suitable for cryopreservation.
Collapse
|
39
|
Chiang HC, Zhang X, Li J, Zhao X, Chen J, Wang HTH, Jatoi I, Brenner A, Hu Y, Li R. BRCA1-associated R-loop affects transcription and differentiation in breast luminal epithelial cells. Nucleic Acids Res 2019; 47:5086-5099. [PMID: 30982901 PMCID: PMC6547407 DOI: 10.1093/nar/gkz262] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 03/06/2019] [Accepted: 04/01/2019] [Indexed: 12/17/2022] Open
Abstract
BRCA1-associated basal-like breast cancer originates from luminal progenitor cells. Breast epithelial cells from cancer-free BRCA1 mutation carriers are defective in luminal differentiation. However, how BRCA1 deficiency leads to lineage-specific differentiation defect is not clear. BRCA1 is implicated in resolving R-loops, DNA-RNA hybrid structures associated with genome instability and transcriptional regulation. We recently showed that R-loops are preferentially accumulated in breast luminal epithelial cells of BRCA1 mutation carriers. Here, we interrogate the impact of a BRCA1 mutation-associated R-loop located in a putative transcriptional enhancer upstream of the ERα-encoding ESR1 gene. Genetic ablation confirms the relevance of this R-loop-containing region to enhancer-promoter interactions and transcriptional activation of the corresponding neighboring genes, including ESR1, CCDC170 and RMND1. BRCA1 knockdown in ERα+ luminal breast cancer cells increases intensity of this R-loop and reduces transcription of its neighboring genes. The deleterious effect of BRCA1 depletion on transcription is mitigated by ectopic expression of R-loop-removing RNase H1. Furthermore, RNase H1 overexpression in primary breast cells from BRCA1 mutation carriers results in a shift from luminal progenitor cells to mature luminal cells. Our findings suggest that BRCA1-dependent R-loop mitigation contributes to luminal cell-specific transcription and differentiation, which could in turn suppress BRCA1-associated tumorigenesis.
Collapse
Affiliation(s)
- Huai-Chin Chiang
- Department of Biochemistry & Molecular Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA
| | - Xiaowen Zhang
- Department of Biochemistry & Molecular Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA
| | - Jingwei Li
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Xiayan Zhao
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Jerry Chen
- Department of Molecular Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Howard T-H Wang
- Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Ismail Jatoi
- Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Andrew Brenner
- Department of Medicine, The Mays Cancer Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Yanfen Hu
- Department of Anatomy & Cell Biology, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA
| | - Rong Li
- Department of Biochemistry & Molecular Medicine, School of Medicine & Health Sciences, The George Washington University, Washington, DC 20037, USA
| |
Collapse
|
40
|
Schwab N, Grenier K, Hazrati LN. DNA repair deficiency and senescence in concussed professional athletes involved in contact sports. Acta Neuropathol Commun 2019; 7:182. [PMID: 31727161 PMCID: PMC6857343 DOI: 10.1186/s40478-019-0822-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 09/29/2019] [Indexed: 12/11/2022] Open
Abstract
Mild traumatic brain injury (mTBI) leads to diverse symptoms including mood disorders, cognitive decline, and behavioral changes. In some individuals, these symptoms become chronic and persist in the long-term and can confer an increased risk of neurodegenerative disease and dementia diagnosis later in life. Despite the severity of its consequences, the pathophysiological mechanism of mTBI remains unknown. In this post-mortem case series, we assessed DNA damage-induced cellular senescence pathways in 38 professional athletes with a history of repeated mTBI and ten controls with no mTBI history. We assessed clinical presentation, neuropathological changes, load of DNA damage, morphological markers of cellular senescence, and expression of genes involved in DNA damage signaling, DNA repair, and cellular senescence including the senescence-associated secretory phenotype (SASP). Twenty-eight brains with past history of repeated mTBI history had DNA damage within ependymal cells, astrocytes, and oligodendrocytes. DNA damage burden was increased in brains with proteinopathy compared to those without. Cases also showed hallmark features of cellular senescence in glial cells including astrocytic swelling, beading of glial cell processes, loss of H3K27Me3 (trimethylation at lysine 27 of histone H3) and lamin B1 expression, and increased expression of cellular senescence and SASP pathways. Neurons showed a spectrum of changes including loss of emerin nuclear membrane expression, loss of Brahma-related gene-1 (BRG1 or SMARCA4) expression, loss of myelin basic protein (MBP) axonal expression, and translocation of intranuclear tau to the cytoplasm. Expression of DNA repair proteins was decreased in mTBI brains. mTBI brains showed substantial evidence of DNA damage and cellular senescence. Decreased expression of DNA repair genes suggests inefficient DNA repair pathways in this cohort, conferring susceptibly to cellular senescence and subsequent brain dysfunction after mTBI. We therefore suggest that brains of contact-sports athletes are characterized by deficient DNA repair and DNA damage-induced cellular senescence and propose that this may affect neurons and be the driver of brain dysfunction in mTBI, predisposing the progression to neurodegenerative diseases. This study provides novel targets for diagnostic and prognostic biomarkers, and represents viable targets for future treatments.
Collapse
Affiliation(s)
- Nicole Schwab
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 1A8, Canada
- The Hospital for Sick Children, 555 University Ave, Toronto, ON, M5G 1X8, Canada
- Canadian Concussion Centre, Toronto Western Hospital, Toronto, ON, Canada
| | - Karl Grenier
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 1A8, Canada
- The Hospital for Sick Children, 555 University Ave, Toronto, ON, M5G 1X8, Canada
| | - Lili-Naz Hazrati
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 1A8, Canada.
- The Hospital for Sick Children, 555 University Ave, Toronto, ON, M5G 1X8, Canada.
- Canadian Concussion Centre, Toronto Western Hospital, Toronto, ON, Canada.
| |
Collapse
|
41
|
Bhardwaj P, Au CC, Benito-Martin A, Ladumor H, Oshchepkova S, Moges R, Brown KA. Estrogens and breast cancer: Mechanisms involved in obesity-related development, growth and progression. J Steroid Biochem Mol Biol 2019; 189:161-170. [PMID: 30851382 PMCID: PMC6502693 DOI: 10.1016/j.jsbmb.2019.03.002] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/27/2019] [Accepted: 03/01/2019] [Indexed: 12/21/2022]
Abstract
Obesity is a risk factor for estrogen receptor-positive (ER+) breast cancer after menopause. The pro-proliferative effects of estrogens are well characterized and there is a growing body of evidence to also suggest an important role in tumorigenesis. Importantly, obesity not only increases the risk of breast cancer, but it also increases the risk of recurrence and cancer-associated death. Aromatase is the rate-limiting enzyme in estrogen biosynthesis and its expression in breast adipose stromal cells is hypothesized to drive the growth of breast tumors and confer resistance to endocrine therapy in obese postmenopausal women. The molecular regulation of aromatase has been characterized in response to many obesity-related molecules, including inflammatory mediators and adipokines. This review is aimed at providing an overview of our current knowledge in relation to the regulation of estrogens in adipose tissue and their role in driving breast tumor development, growth and progression.
Collapse
Affiliation(s)
- Priya Bhardwaj
- Department of Medicine, Weill Cornell Medicine, New York, USA; Graduate School of Medical Sciences, Weill Cornell Medicine, New York, USA
| | - CheukMan C Au
- Department of Medicine, Weill Cornell Medicine, New York, USA
| | | | - Heta Ladumor
- Department of Medicine, Weill Cornell Medicine, New York, USA; Weill Cornell Medicine - Qatar, Doha, Qatar
| | | | - Ruth Moges
- Department of Medicine, Weill Cornell Medicine, New York, USA
| | - Kristy A Brown
- Department of Medicine, Weill Cornell Medicine, New York, USA; Graduate School of Medical Sciences, Weill Cornell Medicine, New York, USA; Department of Physiology, Monash University, Clayton, Victoria, Australia.
| |
Collapse
|
42
|
Macedo GS, Alemar B, Ashton-Prolla P. Reviewing the characteristics of BRCA and PALB2-related cancers in the precision medicine era. Genet Mol Biol 2019; 42:215-231. [PMID: 31067289 PMCID: PMC6687356 DOI: 10.1590/1678-4685-gmb-2018-0104] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 10/24/2018] [Indexed: 12/24/2022] Open
Abstract
Germline mutations in BRCA1 and BRCA2 (BRCA) genes confer high risk of developing cancer, especially breast and ovarian tumors. Since the cloning of these tumor suppressor genes over two decades ago, a significant amount of research has been done. Most recently, monoallelic loss-of-function mutations in PALB2 have also been shown to increase the risk of breast cancer. The identification of BRCA1, BRCA2 and PALB2 as proteins involved in DNA double-strand break repair by homologous recombination and of the impact of complete loss of BRCA1 or BRCA2 within tumors have allowed the development of novel therapeutic approaches for patients with germline or somatic mutations in said genes. Despite the advances, especially in the clinical use of PARP inhibitors, key gaps remain. Now, new roles for BRCA1 and BRCA2 are emerging and old concepts, such as the classical two-hit hypothesis for tumor suppression, have been questioned, at least for some BRCA functions. Here aspects regarding cancer predisposition, cellular functions, histological and genomic findings in BRCA and PALB2-related tumors will be presented, in addition to an up-to-date review of the evolution and challenges in the development and clinical use of PARP inhibitors.
Collapse
Affiliation(s)
- Gabriel S Macedo
- Post-Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Precision Medicine Program, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Barbara Alemar
- Post-Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Patricia Ashton-Prolla
- Post-Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Precision Medicine Program, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| |
Collapse
|
43
|
Semmler L, Reiter-Brennan C, Klein A. BRCA1 and Breast Cancer: a Review of the Underlying Mechanisms Resulting in the Tissue-Specific Tumorigenesis in Mutation Carriers. J Breast Cancer 2019; 22:1-14. [PMID: 30941229 PMCID: PMC6438831 DOI: 10.4048/jbc.2019.22.e6] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/30/2018] [Indexed: 12/24/2022] Open
Abstract
Since the first cloning of BRCA1 in 1994, many of its cellular interactions have been elucidated. However, its highly specific role in tumorigenesis in the breast tissue—carriers of BRCA1 mutations are predisposed to life-time risks of up to 80%—relative to many other tissues that remain unaffected, has not yet been fully enlightened. In this article, we have applied a universal model of tissue-specificity of cancer genes to BRCA1 and present a systematic review of proposed concepts classified into 4 categories. Firstly, tissue-specific differences in levels of BRCA1 expression and secondly differences in expression of proteins with redundant functions are outlined. Thirdly, cell-type specific interactions of BRCA1 are presented: its regulation of aromatase, its interaction with Progesterone- and receptor activator of nuclear factor-κB ligand-signaling that controls proliferation of luminal progenitor cells, and its influence on cell differentiation via modulation of the key regulators jagged 1-NOTCH and snail family transcriptional repressor 2. Fourthly, factors specific to the cell-type as well as the environment of the breast tissue are elucidated: distinct frequency of losses of heterozygosity, interaction with X inactivation specific transcript RNA, estrogen-dependent induction of genotoxic metabolites and nuclear factor (erythroid-derived 2)-like 2, and regulation of sirtuin 1. In conclusion, the impact of these concepts on the formation of hormone-sensitive and -insensitive breast tumors is outlined.
Collapse
Affiliation(s)
- Lukas Semmler
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Berlin, Germany
| | - Cara Reiter-Brennan
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Berlin, Germany
| | - Andreas Klein
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Biochemistry, Berlin, Germany
| |
Collapse
|
44
|
van Jaarsveld MTM, Deng D, Wiemer EAC, Zi Z. Tissue-Specific Chk1 Activation Determines Apoptosis by Regulating the Balance of p53 and p21. iScience 2019; 12:27-40. [PMID: 30665195 PMCID: PMC6348202 DOI: 10.1016/j.isci.2019.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/16/2018] [Accepted: 12/31/2018] [Indexed: 12/11/2022] Open
Abstract
The DNA damage response (DDR) protects cells against genomic instability. Surprisingly, little is known about the differences in DDR across tissues, which may affect cancer evolutionary trajectories and chemotherapy response. Using mathematical modeling and quantitative experiments, we found that the DDR is regulated differently in human breast and lung primary cells. Equal levels of cisplatin-DNA lesions caused stronger Chk1 activation in lung cells, leading to resistance. In contrast, breast cells were more resistant and showed more Chk2 activation in response to doxorubicin. Further analyses indicate that Chk1 activity played a regulatory role in p53 phosphorylation, whereas Chk2 activity was essential for p53 activation and p21 expression. We propose a novel “friction model,” in which the balance of p53 and p21 levels contributes to the apoptotic response in different tissues. Our results suggest that modulating the balance of p53 and p21 dynamics could optimize the response to chemotherapy. Breast and lung cells show different sensitivities to chemotherapeutic drugs Lung cells activate Chk1 more strongly than breast cells with chemotherapeutic drugs Active Chk1 plays a regulatory role in p53 activation and apoptosis responses The balance of p53 and p21 dynamics drives the apoptosis response to DNA damage
Collapse
Affiliation(s)
- Marijn T M van Jaarsveld
- Max Planck Institute for Molecular Genetics, Otto Warburg Laboratory, Ihnestr. 63-73, 14195 Berlin, Germany
| | - Difan Deng
- Max Planck Institute for Molecular Genetics, Otto Warburg Laboratory, Ihnestr. 63-73, 14195 Berlin, Germany
| | - Erik A C Wiemer
- Erasmus University Medical Center, Erasmus MC Cancer Institute, Department of Medical Oncology, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
| | - Zhike Zi
- Max Planck Institute for Molecular Genetics, Otto Warburg Laboratory, Ihnestr. 63-73, 14195 Berlin, Germany.
| |
Collapse
|
45
|
Campbell AM, Morris M, Gallagher R, Boyd R, Carson H, Harkin DP, Wielogorska E, Elliott C, Savage KI, McIntosh SA. Chemoprevention in BRCA1 mutation carriers (CIBRAC): protocol for an open allocation crossover feasibility trial assessing mechanisms of chemoprevention with goserelin and anastrozole versus tamoxifen and acceptability of treatment. BMJ Open 2018; 8:e023115. [PMID: 30580266 PMCID: PMC6318512 DOI: 10.1136/bmjopen-2018-023115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION BRCA1 mutation carriers have a significant lifetime risk of breast cancer, with their primary risk-reduction option being bilateral mastectomy. Preclinical work from our laboratory demonstrated that in BRCA1-deficient breast cells, oestrogen and its metabolites are capable of driving DNA damage and subsequent genomic instability, which are well-defined early events in BRCA1-related cancers. Based on this, we hypothesise that a chemopreventive approach which reduces circulating oestrogen levels may reduce DNA damage and genomic instability, thereby providing an alternative to risk-reducing surgery. METHODS AND ANALYSIS 12 premenopausal women with pathogenic BRCA1 mutations and no previous risk-reducing surgery will be recruited from family history clinics. Participants will be allocated 1:1 to two arms. All will undergo baseline breast biopsies, blood and urine sampling, and quality of life questionnaires. Group A will receive goserelin 3.6 mg/28 days by subcutaneous injection, plus oral anastrozole 1 mg/day, for 12 weeks. Group B will receive oral tamoxifen 20 mg/day for 12 weeks. Following treatment, both groups will provide repeat biopsies, blood and urine samples, and questionnaires. Following a 1-month washout period, the groups will cross over, group A receiving tamoxifen and group B goserelin and anastrozole for a further 12 weeks. After treatment, biopsies, blood and urine samples, and questionnaires will be repeated. DNA damage will be assessed in core biopsies, while blood and urine samples will be used to measure oestrogen metabolite and DNA adduct levels. ETHICS AND DISSEMINATION This study has ethical approval from the Office for Research Ethics Committees Northern Ireland (16/NI/0055) and the Medicines and Healthcare products Regulatory Agency (MHRA) (reference: 32485/0032/001-0001). The investigational medicinal products used in this trial are licensed and in common use, with well-documented safety information. Dissemination of results will be via high-impact journals and relevant national/international conferences. A copy of the results will be offered to the participants and be made available to patient support groups. TRIAL REGISTRATION NUMBER EudraCT: 2016-001087-11; Pre-results.
Collapse
Affiliation(s)
- Aideen M Campbell
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, UK
| | - Melanie Morris
- Northern Ireland Cancer Trials Network, Belfast City Hospital, Belfast, UK
| | - Rebecca Gallagher
- Northern Ireland Cancer Trials Network, Belfast City Hospital, Belfast, UK
| | - Ruth Boyd
- Northern Ireland Cancer Trials Network, Belfast City Hospital, Belfast, UK
| | | | - D Paul Harkin
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, UK
| | | | - Christopher Elliott
- Institute for Global Food Security, Advanced ASSET Centre, School of Biological Sciences, Queen's University Belfast, Belfast, UK
| | - Kienan I Savage
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, UK
| | - Stuart A McIntosh
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, UK
| |
Collapse
|
46
|
Santen RJ, Yue W. Cause or prevention of breast cancer with estrogens: analysis from tumor biologic data, growth kinetic model and Women's Health Initiative study. Climacteric 2018; 22:3-12. [PMID: 30380950 DOI: 10.1080/13697137.2017.1388364] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The existing medical literature suggests that estrogens may cause breast cancer but, paradoxically, can also prevent this neoplasm under specific circumstances. Appropriate interpretation of this complex data requires an understanding of emerging concepts of tumor biology. A substantial body of data, including animal models and epidemiologic studies, suggests that estrogens contribute to the development of breast cancer. Additionally, pre-clinical experiments indicate that the responsible mechanisms include both estrogen receptor α-dependent and -independent effects (ERα-dependent and ERα-independent effects). We recently developed two models to describe the growth kinetics of occult breast tumors, one based on autopsy studies and tumor doubling time and the other, computer-based. Validation of the models involved comparison of the predicted incidence of breast cancer with the actual incidence in population-based studies. Utilization of these models allowed us to determine that 16 years on average are required for tumors to undergo the 30 doubling times necessary for the occult tumors to reach the threshold for clinical detection. These models suggest that menopausal hormone therapy with estrogen plus a progestogen in the Women's Health Initiative (WHI) study accelerated the doubling time of occult, pre-existing tumors from 200 to 150 days and thus, increased the rate of tumor diagnosis. Based on estrogen-induced apoptosis data, the model accurately predicted the prevention of diagnosed breast cancer in the estrogen-alone arm of the WHI. Notably, pre-clinical studies demonstrated that conjugated equine estrogen, as used in the WHI, has unique, pro-apoptotic properties compared to the anti-apoptotic effects of estradiol, a finding providing an explanation for the reduction in breast cancer with conjugated equine estrogen.
Collapse
Affiliation(s)
- R J Santen
- a Division of Endocrinology and Metabolism , University of Virginia Health Science System , Charlottesville , VA , USA
| | - W Yue
- a Division of Endocrinology and Metabolism , University of Virginia Health Science System , Charlottesville , VA , USA
| |
Collapse
|
47
|
BRCA1 ensures genome integrity by eliminating estrogen-induced pathological topoisomerase II-DNA complexes. Proc Natl Acad Sci U S A 2018; 115:E10642-E10651. [PMID: 30352856 DOI: 10.1073/pnas.1803177115] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Women having BRCA1 germ-line mutations develop cancer in breast and ovary, estrogen-regulated tissues, with high penetrance. Binding of estrogens to the estrogen receptor (ER) transiently induces DNA double-strand breaks (DSBs) by topoisomerase II (TOP2) and controls gene transcription. TOP2 resolves catenated DNA by transiently generating DSBs, TOP2-cleavage complexes (TOP2ccs), where TOP2 covalently binds to 5' ends of DSBs. TOP2 frequently fails to complete its catalysis, leading to formation of pathological TOP2ccs. We have previously shown that the endonucleolytic activity of MRE11 plays a key role in removing 5' TOP2 adducts in G1 phase. We show here that BRCA1 promotes MRE11-mediated removal of TOP2 adducts in G1 phase. We disrupted the BRCA1 gene in 53BP1-deficient ER-positive breast cancer and B cells. The loss of BRCA1 caused marked increases of pathological TOP2ccs in G1 phase following exposure to etoposide, which generates pathological TOP2ccs. We conclude that BRCA1 promotes the removal of TOP2 adducts from DSB ends for subsequent nonhomologous end joining. BRCA1-deficient cells showed a decrease in etoposide-induced MRE11 foci in G1 phase, suggesting that BRCA1 repairs pathological TOP2ccs by promoting the recruitment of MRE11 to TOP2cc sites. BRCA1 depletion also leads to the increase of unrepaired DSBs upon estrogen treatment both in vitro in G1-arrested breast cancer cells and in vivo in epithelial cells of mouse mammary glands. BRCA1 thus plays a critical role in removing pathological TOP2ccs induced by estrogens as well as etoposide. We propose that BRCA1 suppresses tumorigenesis by removing estrogen-induced pathological TOP2ccs throughout the cell cycle.
Collapse
|
48
|
Baek HJ, Kim SE, Choi EK, Kim JK, Shin DH, Park EJ, Kim TH, Kim JY, Kim KG, Deng CX, Kim SS. Inhibition of Estrogen Signaling Reduces the Incidence of BRCA1-associated Mammary Tumor Formation. Int J Biol Sci 2018; 14:1755-1768. [PMID: 30416390 PMCID: PMC6216038 DOI: 10.7150/ijbs.28142] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/30/2018] [Indexed: 01/02/2023] Open
Abstract
BRCA1-deficient breast cancer is a very well-known hereditary cancer. However, except for resection of normal mammary glands and ovaries, there is no acceptable measure for proactively preventing tumor development. Importantly, inherited BRCA1 mutations are closely associated with tumors in hormone-responsive tissues. Here, we examined the effects of estrogen on the accumulation of genetic instabilities upon loss of BRCA1, and assessed the contribution of estrogen signaling to the incidence and progression of Brca1-mutated mammary tumors. Our in vitro studies showed that treatment of BRCA1-depleted breast cancer cells with estrogen induced proliferation. Additionally, estrogen reduced the ability of these BRCA1-knockdown cells to sense radiation-induced DNA damage and also facilitated G1/S progression. Moreover, long-term treatment of Brca1-mutant (Brca1co/coMMTV-Cre) mice with the selective estrogen receptor (ER)-α degrader, fulvestrant, decreased the tumor formation rate from 64% to 36%, and also significantly reduced mammary gland density in non-tumor-bearing mice. However, in vivo experiments showed that fulvestrant treatment did not alter the progression of ER-positive Brca1-mutant tumors, which were frequently identified in the aged population and showed less aggressive tendencies. These findings enhance our understanding of how ER-α signaling contributes to BRCA1-deficient mammary tumors and provide evidence suggesting that targeted inhibition of ER-α signaling may be useful for the prevention of BRCA1-mutated breast cancer.
Collapse
Affiliation(s)
- Hye Jung Baek
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| | - Sun Eui Kim
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| | - Eun Kyung Choi
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| | - Jong Kwang Kim
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| | - Dong Hoon Shin
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| | - Eun Jung Park
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| | - Tae Hyun Kim
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| | - Joo-Young Kim
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| | - Kwang Gi Kim
- Department of Biomedical Engineering, Gachon University College of Medicine, Incheon, 21565, Korea
| | - Chu-Xia Deng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR 999078, China
| | - Sang Soo Kim
- Research Institute, National Cancer Center, Goyang, 10408, Korea
| |
Collapse
|
49
|
Ahmad SS, Ahmed K, Venkitaraman AR. Science in Focus: Genomic Instability and its Implications for Clinical Cancer Care. Clin Oncol (R Coll Radiol) 2018; 30:751-755. [PMID: 30269933 DOI: 10.1016/j.clon.2018.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/13/2018] [Accepted: 08/15/2018] [Indexed: 12/22/2022]
Affiliation(s)
- S S Ahmad
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge, UK.
| | - K Ahmed
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge, UK
| | - A R Venkitaraman
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge, UK
| |
Collapse
|
50
|
Sehl ME, Ganz PA. Potential Mechanisms of Age Acceleration Caused by Estrogen Deprivation: Do Endocrine Therapies Carry the Same Risks? JNCI Cancer Spectr 2018; 2:pky035. [PMID: 31360862 PMCID: PMC6649786 DOI: 10.1093/jncics/pky035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/30/2018] [Accepted: 06/22/2018] [Indexed: 02/06/2023] Open
Abstract
Longer duration of endocrine therapy decreases breast cancer recurrence and mortality, but these benefits need to be weighed against potential risks to overall health. Notable side effects of endocrine therapy include cataracts, uterine cancer, thromboembolic events, osteoporosis and fracture risk, chronic musculoskeletal complaints, as well as vaginal dryness and discharge, and vasomotor symptoms. Estrogen deprivation in healthy women younger than 50 years undergoing bilateral oophorectomy has been shown to accelerate the development of diseases related to aging, including coronary artery disease, cardiac arrhythmias, stroke, dementia, and osteoporosis, raising concern that even less dramatic modulation of estrogen homeostasis may adversely affect health outcomes. Diminished available estrogen at the cellular and molecular level may facilitate mechanisms that underlie the aging process, often termed the hallmarks of aging. In this review, we describe estrogen's role in normal physiology across tissues, review the effects of estrogen deprivation on health outcomes in the setting of both surgical and natural menopause, and examine the hallmarks of aging with attention to the effects of estrogen and estrogen blockade on each molecular mechanism underlying the aging process.
Collapse
Affiliation(s)
- Mary E Sehl
- Medicine, Hematology-Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA.,Biomathematics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Patricia A Ganz
- Medicine, Hematology-Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA.,Health Policy and Management, School of Public Health, University of California Los Angeles, Los Angeles, CA
| |
Collapse
|