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Prajzendanc K, Domagała P, Hybiak J, Ryś J, Huzarski T, Szwiec M, Tomiczek-Szwiec J, Redelbach W, Sejda A, Gronwald J, Kluz T, Wiśniowski R, Cybulski C, Łukomska A, Białkowska K, Sukiennicki G, Kulczycka K, Narod SA, Wojdacz TK, Lubiński J, Jakubowska A. BRCA1 promoter methylation in peripheral blood is associated with the risk of triple-negative breast cancer. Int J Cancer 2019; 146:1293-1298. [PMID: 31469414 DOI: 10.1002/ijc.32655] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/19/2019] [Accepted: 08/16/2019] [Indexed: 12/16/2022]
Abstract
Methylation of the promoter of the BRCA1 gene in DNA derived from peripheral blood cells is a possible risk factor for breast cancer. It is not clear if this association is restricted to certain types of breast cancer or is a general phenomenon. We evaluated BRCA1 methylation status in peripheral blood cells from 942 breast cancer patients and from 500 controls. We also assessed methylation status in 262 paraffin-embedded breast cancer tissues. Methylation status was assessed using methylation-sensitive high-resolution melting and was categorized as positive or negative. BRCA1 methylation in peripheral blood cells was strongly associated with the risk of triple-negative breast cancer (TNBC) (odds ratio [OR] 4.70; 95% confidence interval [CI]: 3.13-7.07; p < 0.001), but not of estrogen-receptor positive breast cancer (OR 0.80; 95% CI: 0.46-1.42; p = 0.46). Methylation was also overrepresented among patients with high-grade cancers (OR 4.53; 95% CI: 2.91-7.05; p < 0.001) and medullary cancers (OR 3.08; 95% CI: 1.38-6.88; p = 0.006). Moreover, we detected a significant concordance of BRCA1 promoter methylation in peripheral blood and paired tumor tissue (p < 0.001). We found that BRCA1 promoter methylation in peripheral blood cells is associated with approximately five times greater risk of TNBC. We propose that BRCA1 methylation in blood-derived DNA could be a novel biomarker of increased breast cancer susceptibility, in particular for triple-negative tumors.
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Affiliation(s)
- Karolina Prajzendanc
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Paweł Domagała
- Department of Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Jolanta Hybiak
- Department of Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Janusz Ryś
- Department of Tumor Pathology, Maria Skłodowska-Curie Memorial Centre and Institute of Oncology, Cracow, Poland
| | - Tomasz Huzarski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Department of Clinical Genetics and Pathology, University of Zielona Góra, Zielona Góra, Poland
| | - Marek Szwiec
- Department of Surgery and Oncology, University of Zielona Góra, Zielona Góra, Poland.,Department of Clinical Oncology, University Hospital in Zielona Góra, Zielona Góra, Poland
| | - Joanna Tomiczek-Szwiec
- Department of Histology, Institute of Medicine, University of Opole, Opole, Poland.,Regional Oncology Centre, Opole, Poland
| | - Wojciech Redelbach
- Department of Anatomy, Institute of Medicine, University of Opole, Opole, Poland
| | - Aleksandra Sejda
- Department of Pathology, Provincial Specialist Hospital, Olsztyn, Poland.,Patomorphology Department, University of Warmia and Mazury, Olsztyn, Poland
| | - Jacek Gronwald
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Tomasz Kluz
- Institute of Obstetric and Emergency Medicine, Faculty of Medicine, University of Rzeszow, Rzeszow, Poland
| | - Rafał Wiśniowski
- Department of Clinical Oncology, Regional Oncology Centre, Bielsko-Biala, Poland
| | - Cezary Cybulski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Alicja Łukomska
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Katarzyna Białkowska
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Grzegorz Sukiennicki
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Katarzyna Kulczycka
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Steven A Narod
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
| | - Tomasz K Wojdacz
- Independent Clinical Epigenetics Laboratory, Pomeranian Medical University, Szczecin, Poland
| | - Jan Lubiński
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - 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
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Solomon VR, Alizadeh E, Bernhard W, Hartimath SV, Hill W, Chekol R, Barreto KM, Geyer CR, Fonge H. 111In- and 225Ac-Labeled Cixutumumab for Imaging and α-Particle Radiotherapy of IGF-1R Positive Triple-Negative Breast Cancer. Mol Pharm 2019; 16:4807-4816. [DOI: 10.1021/acs.molpharmaceut.9b00542] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | | | | | | | | | | | | | | | - Humphrey Fonge
- Department of Medical Imaging, Royal University Hospital Saskatoon, Saskatoon, SK S7N 0W8, Canada
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53
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Puppe J, Opdam M, Schouten PC, Jóźwiak K, Lips E, Severson T, van de Ven M, Brambillasca C, Bouwman P, van Tellingen O, Bernards R, Wesseling J, Eichler C, Thangarajah F, Malter W, Pandey GK, Ozretić L, Caldas C, van Lohuizen M, Hauptmann M, Rhiem K, Hahnen E, Reinhardt HC, Büttner R, Mallmann P, Schömig-Markiefka B, Schmutzler R, Linn S, Jonkers J. EZH2 Is Overexpressed in BRCA1-like Breast Tumors and Predictive for Sensitivity to High-Dose Platinum-Based Chemotherapy. Clin Cancer Res 2019; 25:4351-4362. [PMID: 31036541 DOI: 10.1158/1078-0432.ccr-18-4024] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/25/2019] [Accepted: 04/24/2019] [Indexed: 11/16/2022]
Abstract
PURPOSE BRCA1-deficient breast cancers carry a specific DNA copy-number signature ("BRCA1-like") and are hypersensitive to DNA double-strand break (DSB) inducing compounds. Here, we explored whether (i) EZH2 is overexpressed in human BRCA1-deficient breast tumors and might predict sensitivity to DSB-inducing drugs; (ii) EZH2 inhibition potentiates cisplatin efficacy in Brca1-deficient murine mammary tumors. EXPERIMENTAL DESIGN EZH2 expression was analyzed in 497 breast cancers using IHC or RNA sequencing. We classified 370 tumors by copy-number profiles as BRCA1-like or non-BRCA1-like and examined its association with EZH2 expression. Additionally, we assessed BRCA1 loss through mutation or promoter methylation status and investigated the predictive value of EZH2 expression in a study population of breast cancer patients treated with adjuvant high-dose platinum-based chemotherapy compared with standard anthracycline-based chemotherapy. To explore whether EZH2 inhibition by GSK126 enhances sensitivity to platinum drugs in EZH2-overexpressing breast cancers we used a Brca1-deficient mouse model. RESULTS The highest EZH2 expression was found in BRCA1-associated tumors harboring a BRCA1 mutation, BRCA1-promoter methylation or were classified as BRCA1 like. We observed a greater benefit from high-dose platinum-based chemotherapy in BRCA1-like and non-BRCA1-like patients with high EZH2 expression. Combined treatment with the EZH2 inhibitor GSK126 and cisplatin decreased cell proliferation and improved survival in Brca1-deficient mice in comparison with single agents. CONCLUSIONS Our findings demonstrate that EZH2 is expressed at significantly higher levels in BRCA1-deficient breast cancers. EZH2 overexpression can identify patients with breast cancer who benefit significantly from intensified DSB-inducing platinum-based chemotherapy independent of BRCA1-like status. EZH2 inhibition improves the antitumor effect of platinum drugs in Brca1-deficient breast tumors in vivo.
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Affiliation(s)
- Julian Puppe
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands.
- Department of Obstetrics and Gynecology, Medical Faculty, University Hospital Cologne, Cologne, Germany
- Center of Familial Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Mark Opdam
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Philip C Schouten
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Katarzyna Jóźwiak
- Department of Epidemiology and Biostatistics, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Esther Lips
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Tesa Severson
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Marieke van de Ven
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Oncode Institute, Utrecht, the Netherlands
| | - Chiara Brambillasca
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Oncode Institute, Utrecht, the Netherlands
| | - Peter Bouwman
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Oncode Institute, Utrecht, the Netherlands
| | - Olaf van Tellingen
- Division of Pharmacology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - René Bernards
- Oncode Institute, Utrecht, the Netherlands
- Division of Molecular Carcinogenesis, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Jelle Wesseling
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Christian Eichler
- Department of Obstetrics and Gynecology, Medical Faculty, University Hospital Cologne, Cologne, Germany
| | - Fabinshy Thangarajah
- Department of Obstetrics and Gynecology, Medical Faculty, University Hospital Cologne, Cologne, Germany
| | - Wolfram Malter
- Department of Obstetrics and Gynecology, Medical Faculty, University Hospital Cologne, Cologne, Germany
| | - Gaurav Kumar Pandey
- Oncode Institute, Utrecht, the Netherlands
- Division of Molecular Genetics, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Luka Ozretić
- Department of Pathology, University Hospital of Cologne, Cologne, Germany
| | | | - Maarten van Lohuizen
- Oncode Institute, Utrecht, the Netherlands
- Division of Molecular Genetics, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Michael Hauptmann
- Department of Epidemiology and Biostatistics, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Kerstin Rhiem
- Center of Familial Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Eric Hahnen
- Center of Familial Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | | | - Reinhard Büttner
- Department of Pathology, University Hospital of Cologne, Cologne, Germany
| | - Peter Mallmann
- Department of Obstetrics and Gynecology, Medical Faculty, University Hospital Cologne, Cologne, Germany
| | | | - Rita Schmutzler
- Center of Familial Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Sabine Linn
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Jos Jonkers
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
- Center of Familial Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
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54
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Geenen JJJ, Linn SC, Beijnen JH, Schellens JHM. PARP Inhibitors in the Treatment of Triple-Negative Breast Cancer. Clin Pharmacokinet 2019; 57:427-437. [PMID: 29063517 DOI: 10.1007/s40262-017-0587-4] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Breast cancer is a heterogeneous disease, manifesting in a broad differentiation in phenotypes and morphologic profiles, resulting in variable clinical behavior. Between 10 and 20% of all breast cancers are triple negative. Triple-negative breast cancer (TNBC) lacks the expression of human epidermal growth factor receptor 2 (HER2) and hormone receptors; therefore, to date, chemotherapy remains the backbone of treatment. TNBC tends to be aggressive and has a high histological grade, resulting in a poor 5-year prognosis. It has a high prevalence of BRCA1 mutations and an increased Ki-67 expression. This subtype usually responds well to taxanes and/or platinum compounds and poly (ADP-ribose) polymerase (PARP) inhibitors. Studies with PARP inhibitors have demonstrated promising results in the treatment of BRCA-mutated breast and ovarian cancer, and PARP inhibitors have been studied as monotherapy and in combination with cytotoxic therapy or radiotherapy. PARP inhibitor efficacy on poly (ADP-ribose) polymer (PAR) formation in vivo can be quantified by pharmacodynamic assays that measure PAR activity in peripheral blood mononuclear cells (PBMC). Biomarkers such as TP53, ATM, PALB2 and RAD51C might be prognostic or predictive indicators for treatment response, and could also provide targets for novel treatment strategies. In summary, this review provides an overview of the treatment options for basal-like TNBC, including PARP inhibitors, and focuses on the pharmacotherapeutic options in these patients.
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Affiliation(s)
- Jill J J Geenen
- Department of Clinical Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands.,Division of Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands
| | - Sabine C Linn
- Department of Molecular Pathology, Antoni van Leeuwenhoek Hospital, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.,Division of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.,Department of Pathology, Utrecht University Medical Center, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - Jos H Beijnen
- Department of Clinical Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands.,Division of Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands.,Department of Pharmacy, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands.,Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, The Netherlands
| | - Jan H M Schellens
- Department of Clinical Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands. .,Division of Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands. .,Division of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands. .,Department of Pharmacy, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066 CX, The Netherlands. .,Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, The Netherlands.
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55
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PARP Inhibitors as a Therapeutic Agent for Homologous Recombination Deficiency in Breast Cancers. J Clin Med 2019; 8:jcm8040435. [PMID: 30934991 PMCID: PMC6517993 DOI: 10.3390/jcm8040435] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/16/2019] [Accepted: 03/27/2019] [Indexed: 02/07/2023] Open
Abstract
Poly (ADP-ribose) polymerases (PARPs) play an important role in various cellular processes, such as replication, recombination, chromatin remodeling, and DNA repair. Emphasizing PARP's role in facilitating DNA repair, the PARP pathway has been a target for cancer researchers in developing compounds which selectively target cancer cells and increase sensitivity of cancer cells to other anticancer agents, but which also leave normal cells unaffected. Since certain tumors (BRCA1/2 mutants) have deficient homologous recombination repair pathways, they depend on PARP-mediated base excision repair for survival. Thus, inhibition of PARP is a promising strategy to selectively kill cancer cells by inactivating complementary DNA repair pathways. Although PARP inhibitor therapy has predominantly targeted BRCA-mutated cancers, this review also highlights the growing conversation around PARP inhibitor treatment for non-BRCA-mutant tumors, those which exhibit BRCAness and homologous recombination deficiency. We provide an update on the field's progress by considering PARP inhibitor mechanisms, predictive biomarkers, and clinical trials of PARP inhibitors in development. Bringing light to these findings would provide a basis for expanding the use of PARP inhibitors beyond BRCA-mutant breast tumors.
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56
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Lønning PE, Eikesdal HP, Løes IM, Knappskog S. Constitutional Mosaic Epimutations - a hidden cause of cancer? Cell Stress 2019; 3:118-135. [PMID: 31225507 PMCID: PMC6551830 DOI: 10.15698/cst2019.04.183] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 12/11/2022] Open
Abstract
Silencing of tumor suppressor genes by promoter hypermethylation is a key mechanism to facilitate cancer progression in many malignancies. While promoter hypermethylation can occur at later stages of the carcinogenesis process, constitutional methylation of key tumor suppressors may be an initiating event whereby cancer is started. Constitutional BRCA1 methylation due to cis-acting germline genetic variants is associated with a high risk of breast and ovarian cancer. However, this seems to be a rare event, restricted to a very limited number of families. In contrast, mosaic constitutional BRCA1 methylation is detected in 4-7% of newborn females without germline BRCA1 mutations. While the cause of such methylation is poorly understood, mosaic normal tissue BRCA1 methylation is associated with a 2-3 fold increased risk of high-grade serous ovarian cancer (HGSOC). As such, BRCA1 methylation may be the cause of a significant number of ovarian cancers. Given the molecular similarities between HGSOC and basal-like breast cancer, the findings with respect to HGSOC suggest that constitutional BRCA1 methylation could be a risk factor for basal-like breast cancer as well. Similar to BRCA1, some specific germline variants in MLH1 and MSH2 are associated with promoter methylation and a high risk of colorectal cancers in rare hereditary cases of the disease. However, as many as 15% of all colorectal cancers are of the microsatellite instability (MSI) "high" subtype, in which commonly the tumors harbor MLH1 hypermethylation. Constitutional mosaic methylation of MLH1 in normal tissues has been detected but not formally evaluated as a potential risk factor for incidental colorectal cancers. However, the findings with respect to BRCA1 in breast and ovarian cancer raises the question whether mosaic MLH1 methylation is a risk factor for MSI positive colorectal cancer as well. As for MGMT, a promoter variant is associated with elevated methylation across a panel of solid cancers, and MGMT promoter methylation may contribute to an elevated cancer risk in several of these malignancies. We hypothesize that constitutional mosaic promoter methylation of crucial tumor suppressors may trigger certain types of cancer, similar to germline mutations inactivating the same particular genes. Such constitutional methylation events may be a spark to ignite cancer development, and if associated with a significant cancer risk, screening for such epigenetic alterations could be part of cancer prevention programs to reduce cancer mortality in the future.
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Affiliation(s)
- Per E. Lønning
- K.G.Jebsen Center for Genome Directed Cancer Therapy, Department of Clinical Science, University of Bergen, Norway
- Department of Oncology, Haukeland University Hospital, Bergen, Norway
| | - Hans P. Eikesdal
- K.G.Jebsen Center for Genome Directed Cancer Therapy, Department of Clinical Science, University of Bergen, Norway
- Department of Oncology, Haukeland University Hospital, Bergen, Norway
| | - Inger M. Løes
- K.G.Jebsen Center for Genome Directed Cancer Therapy, Department of Clinical Science, University of Bergen, Norway
- Department of Oncology, Haukeland University Hospital, Bergen, Norway
| | - Stian Knappskog
- K.G.Jebsen Center for Genome Directed Cancer Therapy, Department of Clinical Science, University of Bergen, Norway
- Department of Oncology, Haukeland University Hospital, Bergen, Norway
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57
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Tian T, Shan L, Yang W, Zhou X, Shui R. Evaluation of the BRCAness phenotype and its correlations with clinicopathological features in triple-negative breast cancers. Hum Pathol 2019; 84:231-238. [DOI: 10.1016/j.humpath.2018.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 09/26/2018] [Accepted: 10/04/2018] [Indexed: 02/06/2023]
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DNA Ligase IV Prevents Replication Fork Stalling and Promotes Cellular Proliferation in Triple Negative Breast Cancer. J Nucleic Acids 2019; 2019:9170341. [PMID: 30838131 PMCID: PMC6374816 DOI: 10.1155/2019/9170341] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/27/2018] [Accepted: 01/05/2019] [Indexed: 02/07/2023] Open
Abstract
DNA damage is a hallmark of cancer, and mutation and misregulation of proteins that maintain genomic fidelity are associated with the development of multiple cancers. DNA double strand breaks are arguably considered the most deleterious type of DNA damage. The nonhomologous end-joining (NHEJ) pathway is one mechanism to repair DNA double strand breaks, and proteins involved in NHEJ may also regulate DNA replication. We previously established that DNA-PKcs, a NHEJ protein, promotes genomic stability and cell viability following cellular exposure to replication stress; we wanted to discern whether another NHEJ protein, DNA ligase IV (Lig4), shares this phenotype. Our investigations focused on triple negative breast cancer cells, as, compared to nonbasal breast cancer, LIG4 is frequently amplified, and an increased gene dose is associated with higher Lig4 expression. We depleted Lig4 using siRNA and confirmed our knockdown by qPCR and western blotting. Cell survival diminished with Lig4 depletion alone, and this was associated with increased replication fork stalling. Checkpoint protein Chk1 activation and dephosphorylation were unchanged in Lig4-depleted cells. Lig4 depletion resulted in sustained DNA-PKcs phosphorylation following hydroxyurea exposure. Understanding the effect of Lig4 on genomic replication and the replication stress response will clarify the biological ramifications of inhibiting Lig4 activity. In addition, Lig4 is an attractive clinical target for directing CRISPR/Cas9-mediated repair towards homology-directed repair and away from NHEJ, thus understanding of how diminishing Lig4 impacts cell biology is critical.
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Chen Y, Wang Y, Salas LA, Miller TW, Mark K, Marotti JD, Kettenbach AN, Cheng C, Christensen BC. Molecular and epigenetic profiles of BRCA1-like hormone-receptor-positive breast tumors identified with development and application of a copy-number-based classifier. Breast Cancer Res 2019; 21:14. [PMID: 30683142 PMCID: PMC6347811 DOI: 10.1186/s13058-018-1090-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 12/20/2018] [Indexed: 02/09/2023] Open
Abstract
Background BRCA1-mutated cancers exhibit deficient homologous recombination (HR) DNA repair, resulting in extensive copy number alterations and genome instability. HR deficiency can also arise in tumors without a BRCA1 mutation. Compared with other breast tumors, HR-deficient, BRCA1-like tumors exhibit worse prognosis but selective chemotherapeutic sensitivity. Presently, patients with triple negative breast cancer (TNBC) who do not respond to hormone endocrine-targeting therapy are given cytotoxic chemotherapy. However, more recent evidence showed a similar genomic profile between BRCA1-deficient TNBCs and hormone-receptor-positive tumors. Characterization of the somatic alterations of BRCA1-like hormone-receptor-positive breast tumors as a group, which is currently lacking, can potentially help develop biomarkers for identifying additional patients who might respond to chemotherapy. Methods We retrained and validated a copy-number-based support vector machine (SVM) classifier to identify HR-deficient, BRCA1-like breast tumors. We applied this classifier to The Cancer Genome Atlas (TCGA) and Molecular Taxonomy of Breast Cancer International Consortium (METABRIC) breast tumors. We assessed mutational profiles and proliferative capacity by covariate-adjusted linear models and identified differentially methylated regions using DMRcate in BRCA1-like hormone-receptor-positive tumors. Results Of the breast tumors in TCGA and METABRIC, 22% (651/2925) were BRCA1-like. Stratifying on hormone-receptor status, 13% (302/2405) receptor-positive and 69% (288/417) triple-negative tumors were BRCA1-like. Among the hormone-receptor-positive subgroup, BRCA1-like tumors showed significantly increased mutational burden and proliferative capacity (both P < 0.05). Genome-scale DNA methylation analysis of BRCA1-like tumors identified 202 differentially methylated gene regions, including hypermethylated BRCA1. Individually significant CpGs were enriched for enhancer regions (P < 0.05). The hypermethylated gene sets were enriched for DNA and chromatin conformation (all Bonferroni P < 0.05). Conclusions To provide insights into alternative classification and potential therapeutic targeting strategies of BRCA1-like hormone-receptor-positive tumors we developed and applied a novel copy number classifier to identify BRCA1-like hormone-receptor-positive tumors and their characteristic somatic alteration profiles. Electronic supplementary material The online version of this article (10.1186/s13058-018-1090-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Youdinghuan Chen
- Department of Epidemiology, Lebanon, USA.,Department of Molecular and Systems Biology, Lebanon, USA
| | - Yue Wang
- Department of Molecular and Systems Biology, Lebanon, USA
| | - Lucas A Salas
- Department of Epidemiology, Lebanon, USA.,Department of Molecular and Systems Biology, Lebanon, USA
| | - Todd W Miller
- Department of Molecular and Systems Biology, Lebanon, USA
| | - Kenneth Mark
- Department of Molecular and Systems Biology, Lebanon, USA
| | | | - Arminja N Kettenbach
- Department of Molecular and Systems Biology, Lebanon, USA.,Department of Biochemistry and Cell Biology, Lebanon, USA
| | - Chao Cheng
- Department of Molecular and Systems Biology, Lebanon, USA. .,Department of Biomedical Data Science, Lebanon, USA. .,Present address: Department of Medicine, Baylor College of Medicine, Room ICTR 100D, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Brock C Christensen
- Department of Epidemiology, Lebanon, USA. .,Department of Molecular and Systems Biology, Lebanon, USA. .,Department of Community and Family Medicine, Dartmouth-Hitchcock Medical Center, 660 Williamson, HB 7650. One Medical Center Drive, Lebanon, NH, 03756, USA.
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60
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Selmin OI, Donovan MG, Skovan B, Paine-Murieta GD, Romagnolo DF. Arsenic‑induced BRCA1 CpG promoter methylation is associated with the downregulation of ERα and resistance to tamoxifen in MCF7 breast cancer cells and mouse mammary tumor xenografts. Int J Oncol 2019; 54:869-878. [PMID: 30664189 PMCID: PMC6365020 DOI: 10.3892/ijo.2019.4687] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/03/2018] [Indexed: 02/07/2023] Open
Abstract
A significant percentage (~30%) of estrogen receptor-α (ERα)-positive tumors become refractory to endocrine therapies; however, the mechanisms responsible for this resistance remain largely unknown. Chronic exposure to arsenic through foods and contaminated water has been linked to an increased incidence of several tumors and long-term health complications. Preclinical and population studies have indicated that arsenic exposure may interfere with endocrine regulation and increase the risk of breast tumorigenesis. In this study, we examined the effects of sodium arsenite (NaAsIII) exposure in ERα-positive breast cancer cells in vitro and in mammary tumor xenografts. The results revealed that acute (within 4 days) and long-term (10 days to 7 weeks) in vitro exposure to environmentally relevant doses reduced breast cancer 1 (BRCA1) and ERα expression associated with the gain of cyclin D1 (CCND1) and folate receptor 1 (FOLR1), and the loss of methylenetetrahydrofolate reductase (MTHFR) expression. Furthermore, long-term exposure to NaAsIII induced the proliferation and compromised the response of MCF7 cells to tamoxifen (TAM). The in vitro exposure to NaAsIII induced BRCA1 CpG methylation associated with the increased recruitment of DNA methyltransferase 1 (DNMT1) and the loss of RNA polymerase II (PolII) at the BRCA1 gene. Xenografts of NaAsIII-preconditioned MCF7 cells (MCF7NaAsIII) into the mammary fat pads of nude mice produced a larger tumor volume compared to tumors from control MCF7 cells and were more refractory to TAM in association with the reduced expression of BRCA1 and ERα, CpG hypermethylation of estrogen receptor 1 (ESR1) and BRCA1, and the increased expression of FOLR1. These cumulative data support the hypothesis that exposure to AsIII may contribute to reducing the efficacy of endocrine therapy against ERα-positive breast tumors by hampering the expression of ERα and BRCA1 via CpG methylation, respectively of ESR1 and BRCA1.
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Affiliation(s)
- Ornella I Selmin
- The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ 85724, USA
| | - Micah G Donovan
- Cancer Biology Graduate Interdisciplinary Program, The University of Arizona, Tucson, AZ 85724, USA
| | - Bethany Skovan
- The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ 85724, USA
| | | | - Donato F Romagnolo
- The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ 85724, USA
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Sharma P, López-Tarruella S, García-Saenz JA, Khan QJ, Gómez HL, Prat A, Moreno F, Jerez-Gilarranz Y, Barnadas A, Picornell AC, Monte-Millán MD, González-Rivera M, Massarrah T, Pelaez-Lorenzo B, Palomero MI, González Del Val R, Cortés J, Fuentes-Rivera H, Morales DB, Márquez-Rodas I, Perou CM, Lehn C, Wang YY, Klemp JR, Mammen JV, Wagner JL, Amin AL, O'Dea AP, Heldstab J, Jensen RA, Kimler BF, Godwin AK, Martín M. Pathological Response and Survival in Triple-Negative Breast Cancer Following Neoadjuvant Carboplatin plus Docetaxel. Clin Cancer Res 2018; 24:5820-5829. [PMID: 30061361 PMCID: PMC6279513 DOI: 10.1158/1078-0432.ccr-18-0585] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 05/21/2018] [Accepted: 07/24/2018] [Indexed: 12/16/2022]
Abstract
PURPOSE Prognostic value of pathologic complete response (pCR) and extent of pathologic response attained with anthracycline-free platinum plus taxane neoadjuvant chemotherapy (NAC) in triple-negative breast cancer (TNBC) is unknown. We report recurrence-free survival (RFS) and overall survival (OS) according to degree of pathologic response in patients treated with carboplatin plus docetaxel NAC. PATIENTS AND METHODS One-hundred and ninety patients with stage I-III TNBC were treated with neoadjuvant carboplatin (AUC6) plus docetaxel (75 mg/m2) every 21 days × 6 cycles. pCR (no evidence of invasive tumor in breast and axilla) and Residual cancer burden (RCB) were evaluated. Patients were followed for recurrence and survival. Extent of pathologic response was associated with RFS and OS using the Kaplan-Meier method. RESULTS Median age was 51 years, and 52% were node-positive. pCR and RCB I rates were 55% and 13%, respectively. Five percent of pCR patients, 0% of RCB I patients, and 58% of RCB II/III patients received adjuvant anthracyclines. Three-year RFS and OS were 79% and 87%, respectively. Three-year RFS was 90% in patients with pCR and 66% in those without pCR [HR = 0.30; 95% confidence interval (CI), 0.14-0.62; P = 0.0001]. Three-year OS was 94% in patients with pCR and 79% in those without pCR (HR = 0.25; 95% CI, 0.10-0.63; P = 0.001). Patients with RCB I demonstrated 3-year RFS (93%) and OS (100%) similar to those with pCR. On multivariable analysis, higher tumor stage, node positivity, and RCB II/III were associated with worse RFS. CONCLUSIONS Neoadjuvant carboplatin plus docetaxel yields encouraging efficacy in TNBC. Patients achieving pCR or RCB I with this regimen demonstrate excellent 3-year RFS and OS without adjuvant anthracycline.
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Affiliation(s)
- Priyanka Sharma
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas.
| | - Sara López-Tarruella
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain
| | | | - Qamar J Khan
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Henry L Gómez
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplásicas, Lima, Perú
| | - Aleix Prat
- Department of Medical Oncology, Hospital Clinic of Barcelona, Barcelona, Spain
- Translational Genomics and Targeted Therapeutics in Solid Tumors, Institut d'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Fernando Moreno
- Department of Medical Oncology, Hospital Clínico San Carlos, Madrid, Spain
| | - Yolanda Jerez-Gilarranz
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain
| | - Agustí Barnadas
- Department of Medical Oncology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Antoni C Picornell
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain
| | - María Del Monte-Millán
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain
| | - Milagros González-Rivera
- Laboratory of Translational Oncology, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Tatiana Massarrah
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain
| | | | - María Isabel Palomero
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain
| | - Ricardo González Del Val
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain
| | - Javier Cortés
- Department of Oncology, Ramón y Cajal University Hospital, Madrid, Spain. Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Hugo Fuentes-Rivera
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplásicas, Lima, Perú
| | - Denisse Bretel Morales
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplásicas, Lima, Perú
| | - Iván Márquez-Rodas
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain
| | - Charles M Perou
- Departments of Genetics and Pathology & Laboratory Medicine, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Carolyn Lehn
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Yen Y Wang
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Jennifer R Klemp
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Joshua V Mammen
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Jamie L Wagner
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Amanda L Amin
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Anne P O'Dea
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Jaimie Heldstab
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Roy A Jensen
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Bruce F Kimler
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Andrew K Godwin
- Division of Medical Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Miguel Martín
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Universidad Complutense, CIBERONC, GEICAM, Madrid, Spain.
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Walsh EM, Shalaby A, O’Loughlin M, Keane N, Webber MJ, Kerin MJ, Keane MM, Glynn SA, Callagy GM. Outcome for triple negative breast cancer in a retrospective cohort with an emphasis on response to platinum-based neoadjuvant therapy. Breast Cancer Res Treat 2018; 174:1-13. [PMID: 30488345 PMCID: PMC6418073 DOI: 10.1007/s10549-018-5066-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 11/19/2018] [Indexed: 12/18/2022]
Abstract
Purpose The rate of pathological complete response (pCR) for patients with triple negative breast cancer (TNBC) is increased when carboplatin is added to neo-adjuvant chemotherapy (NACT). However, while phase III trial data showing a survival benefit are awaited, carboplatin is not yet standard-of-care for TNBC. The aim of this study was to examine the rate of pCR and the outcome for those treated with carboplatin and to examine the predictors of response to therapy. Methods The retrospective series comprised 333 consecutive patients with TNBC (median follow-up time, 43 months). Adjuvant chemotherapy was given to 51% (n = 168) of patients and 29% (n = 97) received anthracycline–taxane NACT with carboplatin given to 9% (n = 31) of patients. Results Overall, 25% (n = 78) of patients experienced a breast cancer recurrence and 22% (n = 68) died from disease. A pCR breast and pCR breast/axilla was more common in those who received carboplatin (n = 18, 58% and n = 17, 55%, respectively) compared those who did not (n = 23, 36% and n = 18, 28%, respectively) (p = 0.041 and p = 0.011, respectively). By multivariable analysis, carboplatin and high tumor grade were independent predictors of pCR breast/axilla (ORnon-pCR = 0.17; 95% CI 0.06–0.54; p = 0.002; and ORnon-pCR = 0.05, 95% CI 0.01–0.27; p < 0.001, respectively). pCR breast/axilla was an independent predictor of DFS (HRnon-pCR=6.23; 95% CI 1.36–28.50; p = 0.018), metastasis-free survival (HRnon-pCR = 5.08; 95% CI 1.09–23.65; p = 0.038) and BCSS (HRnon-pCR = 8.52; 95% CI 1.09–66.64; p = 0.041). Conclusion Carboplatin therapy and high tumor grade are associated with a significant increase in the rate of pCR, which is an independent predictor of outcome. These data support the use of carboplatin in NACT for TNBC, while results from phase III studies are awaited. Electronic supplementary material The online version of this article (10.1007/s10549-018-5066-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Elaine M. Walsh
- Discipline of Pathology, Lambe Institute for Translational Research, NUI Galway, Costello Road, Galway, Ireland
- Department of Medical Oncology, University Hospital Galway, Galway, Ireland
| | - Aliaa Shalaby
- Discipline of Pathology, Lambe Institute for Translational Research, NUI Galway, Costello Road, Galway, Ireland
| | - Mark O’Loughlin
- Discipline of Pathology, Lambe Institute for Translational Research, NUI Galway, Costello Road, Galway, Ireland
| | - Nessa Keane
- Discipline of Pathology, Lambe Institute for Translational Research, NUI Galway, Costello Road, Galway, Ireland
| | - Mark J Webber
- Discipline of Pathology, Lambe Institute for Translational Research, NUI Galway, Costello Road, Galway, Ireland
| | - Michael J. Kerin
- Discipline of Surgery, Lambe Institute for Translational Research, NUI Galway, Costello Road, Galway, Ireland
| | - Maccon M. Keane
- Department of Medical Oncology, University Hospital Galway, Galway, Ireland
| | - Sharon A. Glynn
- Discipline of Pathology, Lambe Institute for Translational Research, NUI Galway, Costello Road, Galway, Ireland
| | - Grace M. Callagy
- Discipline of Pathology, Lambe Institute for Translational Research, NUI Galway, Costello Road, Galway, Ireland
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Chartron E, Theillet C, Guiu S, Jacot W. Targeting homologous repair deficiency in breast and ovarian cancers: Biological pathways, preclinical and clinical data. Crit Rev Oncol Hematol 2018; 133:58-73. [PMID: 30661659 DOI: 10.1016/j.critrevonc.2018.10.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 09/25/2018] [Accepted: 10/30/2018] [Indexed: 12/16/2022] Open
Abstract
Mutation or epigenetic silencing of homologous recombination (HR) repair genes is characteristic of a growing proportion of triple-negative breast cancers (TNBCs) and high-grade serous ovarian carcinomas. Defects in HR lead to genome instability, allowing cells to acquire the multiple genetic alterations essential for cancer development. However, this deficiency can also be exploited by using DNA damaging agents or by targeting compensatory repair pathways. A noteworthy example is treatment of TNBC and epithelial ovarian cancer harboring BRCA1/2 germline mutations using platinum salts and/or PARP inhibitors. Dramatic responses to PARP inhibitors may support a wider use in the HR-deficient population beyond those with mutated germline BRCA1 and 2. In this review, we discuss HR deficiency hallmarks as predictive biomarkers for platinum salt and PARP inhibitor sensitivity for selecting patients affected by TNBC or epithelial ovarian cancer who could benefit from these therapeutic options.
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Affiliation(s)
- Elodie Chartron
- Department of medical oncology, Montpellier Academic Hospital, Montpellier, France
| | - Charles Theillet
- IRCM, INSERM, Université de Montpellier, ICM, Montpellier, France
| | - Séverine Guiu
- Department of Medical Oncology, Institut du Cancer de Montpellier, Montpellier, France
| | - William Jacot
- IRCM, INSERM, Université de Montpellier, ICM, Montpellier, France; Department of Medical Oncology, Institut du Cancer de Montpellier, Montpellier, France.
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64
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Shahda S, Timms KM, Ibrahim AA, Reid JE, Cramer HM, Radovich M, Ibrahim S, Allen B, O’Neil BH. Homologous Recombination Deficiency in Patients With Pancreatic Ductal Adenocarcinoma and Response to Chemotherapy. JCO Precis Oncol 2018; 2:1-11. [DOI: 10.1200/po.17.00087] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Purpose Mutations or copy number abnormalities of genes involved in homologous recombination (HR) occur in pancreatic ductal adenocarcinoma (PDAC). DNA-based measures of HR deficiency (HRD) have been developed and may help identify tumors with better response to DNA-damaging agents. This study aimed to describe the HR pathway mutations and HRD status and determine their association with treatment response and outcome in patients with PDAC. Patients and Methods We performed a retrospective analysis of tumor samples from patients treated at Indiana University for locally advanced or metastatic PDAC. Patients were included if they received gemcitabine plus nanoparticle albumin-bound paclitaxel (control) or fluorouracil, oxaliplatin, leucovorin, and irinotecan (FOLFIRINOX) and had adequate follow-up to assess survival and response to therapy. Tumor analysis generated a three-biomarker HRD score and mutation data for 44 genes. Results Ninety-one samples met inclusion criteria, and 78 samples (formalin-fixed paraffin-embedded, n = 15; fine-needle aspiration, n = 63) generated mutation data. HRD analysis was successful for 57 samples (HRD score: median, 18; range, 5 to 61); the primary cause of failure was low tumor cellularity. Six BRCA1/ 2 mutations were detected, four with HRD scores in the top decile ( P = .011). There was no statistically significant correlation between HRD score and radiographic response (odds ratio per interquartile range, 1.40; P = .32 adjusted for treatment) in either treatment group. In patients treated with FOLFIRINOX, HRD score dichotomized at the median was not associated with progression-free survival (median, 5.3 v 9.4 months for low v high HRD score, respectively; P = .083) or overall survival (median, 11.9 v 10.7 months for low v high HRD score, respectively; P = .76). Conclusion Mutations in DNA repair genes occur in PDAC, and HRD scores can be generated in the majority of patients. The HRD score was not significantly associated with higher response rate or prolonged survival in patients treated with FOLFIRINOX.
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Affiliation(s)
- Safi Shahda
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
| | - Kirsten M. Timms
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
| | - Ashley A. Ibrahim
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
| | - Julia E. Reid
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
| | - Harvey M. Cramer
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
| | - Milan Radovich
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
| | - Sulfikar Ibrahim
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
| | - Brian Allen
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
| | - Bert H. O’Neil
- Safi Shahda, Harvey M. Cramer, Milan Radovich, and Bert H. O’Neil, Indiana University School of Medicine, Indianapolis; Ashley A. Ibrahim and Sulfikar Ibrahim, Indiana University Health Ball Memorial Hospital, Muncie, IN; and Kirsten M. Timms, Julia E. Reid, and Brian Allen, Myriad Genetics, Salt Lake City, UT
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65
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Schwark AL, Stadler ZK. Should We Lower Our Threshold for Germline Genetic Assessment in Pancreatic Adenocarcinoma? JCO Precis Oncol 2018; 2:1-4. [DOI: 10.1200/po.17.00227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Alicia Latham Schwark
- Alicia Latham Schwark and Zsofia K. Stadler, Memorial Sloan Kettering Cancer Center; and Zsofia K. Stadler, Weill Cornell Medical College, New York, NY
| | - Zsofia K. Stadler
- Alicia Latham Schwark and Zsofia K. Stadler, Memorial Sloan Kettering Cancer Center; and Zsofia K. Stadler, Weill Cornell Medical College, New York, NY
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66
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Liposits G, Loh KP, Soto-Perez-de-Celis E, Dumas L, Battisti NML, Kadambi S, Baldini C, Banerjee S, Lichtman SM. PARP inhibitors in older patients with ovarian and breast cancer: Young International Society of Geriatric Oncology review paper. J Geriatr Oncol 2018; 10:337-345. [PMID: 30333088 DOI: 10.1016/j.jgo.2018.10.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 09/16/2018] [Accepted: 10/10/2018] [Indexed: 01/28/2023]
Abstract
Breast and ovarian cancer are common malignancies among older adults, causing significant morbidity and mortality. Although most cases of breast and ovarian cancer are sporadic, a significant proportion is caused by mutations in cancer susceptibility genes, most often breast cancer susceptibility genes (BRCA) 1 and 2. Furthermore, some breast and ovarian tumors are phenotypically similar to those with BRCA mutations, a phenomenon known as "BRCAness". BRCA mutations and "BRCAness" lead to defects in DNA repair, which may be a target for therapeutic agents such as Poly ADP-Ribose Polymerase (PARP) inhibitors. PARP inhibitors are novel medications which lead to double-strand breaks resulting in cell death due to synthetic lethality, and which have been shown to be effective in patients with advanced breast and ovarian cancers with or without BRCA mutations. Three different PARP inhibitors (olaparib, niraparib, and rucaparib) have been approved for the treatment of ovarian cancer and one (olaparib) for breast cancer harboring BRCA mutations. Here, we review the currently available evidence regarding the use of PARP inhibitors for the treatment of patients with breast and ovarian cancer, with a particular focus on the inclusion of older adults in clinical trials of these therapies. Additionally, we provide an overview of currently ongoing studies of PARP inhibitors in breast and ovarian cancer, and include recommendations for increasing the evidence-base for using these medications among older patients.
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Affiliation(s)
- Gabor Liposits
- Department of Oncology, Region Hospital West Jutland, Gl. Landevej 61, Herning, 7400, Denmark.
| | - Kah Poh Loh
- Division of Hematology/Oncology, James P. Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY, USA.
| | - Enrique Soto-Perez-de-Celis
- Enrique Soto-Perez-de-Celis Department of Geriatrics, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico.
| | - Lucy Dumas
- Gynaecology Unit, The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom.
| | | | - Sindhuja Kadambi
- Division of Geriatrics/Aging, Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA.
| | - Capucine Baldini
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Saclay, Villejuif, F-94805, France.
| | - Susana Banerjee
- Gynaecology Unit, The Royal Marsden NHS Foundation Trust Sutton, United Kingdom.
| | - Stuart M Lichtman
- Department of Medical Oncology, Memorial Sloan Kettering Cancer Center, NY, USA.
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67
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Mori H, Kubo M, Kai M, Velasquez VV, Kurata K, Yamada M, Okido M, Kuroki S, Oda Y, Nakamura M. BRCAness Combined With a Family History of Cancer Is Associated With a Poor Prognosis for Breast Cancer Patients With a High Risk of BRCA Mutations. Clin Breast Cancer 2018; 18:e1217-e1227. [DOI: 10.1016/j.clbc.2018.05.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 04/26/2018] [Accepted: 05/27/2018] [Indexed: 10/14/2022]
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68
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Saadat N, Liu F, Haynes B, Nangia-Makker P, Bao X, Li J, Polin LA, Gupta S, Mao G, Shekhar MP. Nano-delivery of RAD6/Translesion Synthesis Inhibitor SMI#9 for Triple-negative Breast Cancer Therapy. Mol Cancer Ther 2018; 17:2586-2597. [PMID: 30242094 DOI: 10.1158/1535-7163.mct-18-0364] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 08/02/2018] [Accepted: 09/18/2018] [Indexed: 12/14/2022]
Abstract
The triple-negative breast cancer (TNBC) subtype, regardless of their BRCA1 status, has the poorest outcome compared with other breast cancer subtypes, and currently there are no approved targeted therapies for TNBC. We have previously demonstrated the importance of RAD6-mediated translesion synthesis pathway in TNBC development/progression and chemoresistance, and the potential therapeutic benefit of targeting RAD6 with a RAD6-selective small-molecule inhibitor, SMI#9. To overcome SMI#9 solubility limitations, we recently developed a gold nanoparticle (GNP)-based platform for conjugation and intracellular release of SMI#9, and demonstrated its in vitro cytotoxic activity toward TNBC cells. Here, we characterized the in vivo pharmacokinetic and therapeutic properties of PEGylated GNP-conjugated SMI#9 in BRCA1 wild-type and BRCA1-mutant TNBC xenograft models, and investigated the impact of RAD6 inhibition on TNBC metabolism by 1H-NMR spectroscopy. GNP conjugation allowed the released SMI#9 to achieve higher systemic exposure and longer retention as compared with the unconjugated drug. Systemically administered SMI#9-GNP inhibited the TNBC growth as effectively as intratumorally injected unconjugated SMI#9. Inductively coupled mass spectrometry analysis showed highest GNP concentrations in tumors and liver of SMI#9-GNP and blank-GNP-treated mice; however, tumor growth inhibition occurred only in the SMI#9-GNP-treated group. SMI#9-GNP was tolerated without overt signs of toxicity. SMI#9-induced sensitization was associated with perturbation of a common set of glycolytic pathways in BRCA1 wild-type and BRCA1-mutant TNBC cells. These data reveal novel SMI#9 sensitive markers of metabolic vulnerability for TNBC management and suggest that nanotherapy-mediated RAD6 inhibition offers a promising strategy for TNBC treatment.
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Affiliation(s)
- Nadia Saadat
- Karmanos Cancer Institute, Detroit, Michigan.,Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan
| | - Fangchao Liu
- Department of Chemical Engineering and Materials Science, Wayne State University College of Engineering, Detroit, Michigan
| | - Brittany Haynes
- Karmanos Cancer Institute, Detroit, Michigan.,Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan
| | - Pratima Nangia-Makker
- Karmanos Cancer Institute, Detroit, Michigan.,Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan
| | - Xun Bao
- Karmanos Cancer Institute, Detroit, Michigan.,Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan
| | - Jing Li
- Karmanos Cancer Institute, Detroit, Michigan.,Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan
| | - Lisa A Polin
- Karmanos Cancer Institute, Detroit, Michigan.,Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan
| | - Smiti Gupta
- Department of Nutrition and Food Sciences, Wayne State University College of Liberal Arts and Science, Detroit, Michigan
| | - Guangzhao Mao
- Department of Chemical Engineering and Materials Science, Wayne State University College of Engineering, Detroit, Michigan.
| | - Malathy P Shekhar
- Karmanos Cancer Institute, Detroit, Michigan. .,Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan.,Department of Pathology, Wayne State University School of Medicine, Detroit, Michigan
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69
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Temian DC, Pop LA, Irimie AI, Berindan-Neagoe I. The Epigenetics of Triple-Negative and Basal-Like Breast Cancer: Current Knowledge. J Breast Cancer 2018; 21:233-243. [PMID: 30275851 PMCID: PMC6158152 DOI: 10.4048/jbc.2018.21.e41] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 07/06/2018] [Indexed: 12/15/2022] Open
Abstract
Breast cancer has the highest incidence among all malignancies diagnosed in women. Therapies have significantly improved over the years due to extensive molecular and clinical research; in a large number of cases, targeted therapies have provided better prognosis. However, one specific subtype remains elusive to targeted therapies–the triple-negative breast cancer. This immunohistochemically defined subtype is resistant to both endocrine and targeted therapies, leading to its poor prognosis. A field that is of great promise in current cancer research is epigenetics. By studying the epigenetic mechanisms underlying tumorigenesis–DNA methylation, histone modifications, and noncoding RNAs–advances in cancer treatment, diagnosis, and prevention are possible. This review aims to synthesize the epigenetic discoveries that have been made related to the triple-negative breast cancer.
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Affiliation(s)
- Daiana Cosmina Temian
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Faculty of Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Laura Ancuta Pop
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alexandra Iulia Irimie
- Division of Dental Propaedeutics, Aesthetic, Department of Prosthetic Dentistry and Dental Materials, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,MedFUTURE Research Center for Advanced Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Department of Functional Genomics and Experimental Pathology, The Oncology Institute "Prof. Dr. I Chiricuta", Cluj-Napoca, Romania
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70
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Tray N, Adams S, Esteva FJ. Antibody-drug conjugates in triple negative breast cancer. Future Oncol 2018; 14:2651-2661. [PMID: 30175620 DOI: 10.2217/fon-2018-0131] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Triple negative breast cancer (TNBC) is a heterogeneous disease that comprises 15-20% of all breast cancers and is more frequently seen in younger women, African-Americans, and BRCA1 expression. Advanced TNBC carries aggressive features and is associated with overall poor outcomes. Unfortunately, there are no targeted therapies available for non-BRCA associated TNBC, which remains a high unmet therapeutic need. One emerging treatment modality includes antibody-drug conjugates which are highly selective monoclonal antibodies conjugated to cytotoxic agents, designed to deliver cytotoxic drugs to antigen-expressing tumor cells. This review will highlight three antibody-drug conjugates currently being evaluated in TNBC (CDX-011, SGN-LIV1a, IMMU-132), including one that has been given Breakthrough Therapy designation from the US FDA.
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Affiliation(s)
- Nancy Tray
- Perlmutter Cancer Center at New York University Langone Health, New York, NY 10016, USA
| | - Sylvia Adams
- Perlmutter Cancer Center at New York University Langone Health, New York, NY 10016, USA
| | - Francisco J Esteva
- Perlmutter Cancer Center at New York University Langone Health, New York, NY 10016, USA
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71
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Triple-Negative Breast Cancers: Systematic Review of the Literature on Molecular and Clinical Features with a Focus on Treatment with Innovative Drugs. Curr Oncol Rep 2018; 20:76. [PMID: 30128845 DOI: 10.1007/s11912-018-0726-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE OF REVIEW Triple-negative breast cancer (TNBC) accounts for 15-20% of diagnosed breast tumours, with higher incidence in young and African-American women, and it is frequently associated with BRCA germline mutations. Chemotherapy is the only well-established therapeutic option in both early- and advanced-stages of the disease. TNBC tumours relapse earlier after standard anthracycline- and/or taxane-based chemotherapy treatments, generally within 1-3 years after the diagnosis, and often develop visceral metastases, representing the subtype with a worse prognosis among all breast cancers. In the present review, we will provide an updated overview of the available results of recent clinical trials for this disease and we will describe the implications of the known molecular pathways representing novel targets for development of future therapies for TNBC patients. RECENT FINDINGS Over the past decade, the advent of gene expression micro-array technology has led to the identification of different actionable targets including various genomic alterations, androgen receptor, PARP, PI3K, VEGF and other proteins of the angiogenic pathway. Thus, novel targeted drugs have been tested in clinical trials reporting promising results in specific TNBC molecular subgroups. Although cytotoxic chemotherapy remains the mainstay of treatment for TNBC patients, the identification of novel 'drugable' targets and pathways for developing personalized treatments represents a promising investigational approach in the management of the TNBC subtype.
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72
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Zhao EY, Shen Y, Pleasance E, Kasaian K, Leelakumari S, Jones M, Bose P, Ch'ng C, Reisle C, Eirew P, Corbett R, Mungall KL, Thiessen N, Ma Y, Schein JE, Mungall AJ, Zhao Y, Moore RA, Den Brok W, Wilson S, Villa D, Shenkier T, Lohrisch C, Chia S, Yip S, Gelmon K, Lim H, Renouf D, Sun S, Schrader KA, Young S, Bosdet I, Karsan A, Laskin J, Marra MA, Jones SJM. Homologous Recombination Deficiency and Platinum-Based Therapy Outcomes in Advanced Breast Cancer. Clin Cancer Res 2018; 23:7521-7530. [PMID: 29246904 DOI: 10.1158/1078-0432.ccr-17-1941] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 08/14/2017] [Accepted: 09/26/2017] [Indexed: 11/16/2022]
Abstract
Purpose: Recent studies have identified mutation signatures of homologous recombination deficiency (HRD) in over 20% of breast cancers, as well as pancreatic, ovarian, and gastric cancers. There is an urgent need to understand the clinical implications of HRD signatures. Whereas BRCA1/2 mutations confer sensitivity to platinum-based chemotherapies, it is not yet clear whether mutation signatures can independently predict platinum response.Experimental Design: In this observational study, we sequenced tumor whole genomes (100× depth) and matched normals (60×) of 93 advanced-stage breast cancers (33 platinum-treated). We computed a published metric called HRDetect, independently trained to predict BRCA1/2 status, and assessed its capacity to predict outcomes on platinum-based chemotherapies. Clinical endpoints were overall survival (OS), total duration on platinum-based therapy (TDT), and radiographic evidence of clinical improvement (CI).Results: HRDetect predicted BRCA1/2 status with an area under the curve (AUC) of 0.94 and optimal threshold of 0.7. Elevated HRDetect was also significantly associated with CI on platinum-based therapy (AUC = 0.89; P = 0.006) with the same optimal threshold, even after adjusting for BRCA1/2 mutation status and treatment timing. HRDetect scores over 0.7 were associated with a 3-month extended median TDT (P = 0.0003) and 1.3-year extended median OS (P = 0.04).Conclusions: Our findings not only independently validate HRDetect, but also provide the first evidence of its association with platinum response in advanced breast cancer. We demonstrate that HRD mutation signatures may offer clinically relevant information independently of BRCA1/2 mutation status and hope this work will guide the development of clinical trials. Clin Cancer Res; 23(24); 7521-30. ©2017 AACR.
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Affiliation(s)
- Eric Y Zhao
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Yaoqing Shen
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Erin Pleasance
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Katayoon Kasaian
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Sreeja Leelakumari
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Martin Jones
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Pinaki Bose
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Carolyn Ch'ng
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Caralyn Reisle
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Peter Eirew
- Department of Molecular Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Richard Corbett
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Karen L Mungall
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Nina Thiessen
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Yussanne Ma
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Jacqueline E Schein
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Andrew J Mungall
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Yongjun Zhao
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Richard A Moore
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Wendie Den Brok
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Sheridan Wilson
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Diego Villa
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Tamara Shenkier
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Caroline Lohrisch
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Stephen Chia
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Stephen Yip
- Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Karen Gelmon
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Howard Lim
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Daniel Renouf
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Sophie Sun
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Kasmintan A Schrader
- Department of Molecular Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada.,Department of Medical Genetics, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Sean Young
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Ian Bosdet
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Aly Karsan
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Janessa Laskin
- Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Marco A Marra
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada.,Department of Medical Genetics, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Steven J M Jones
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. .,Department of Medical Genetics, The University of British Columbia, Vancouver, British Columbia, Canada
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73
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Vos S, van Diest PJ, Moelans CB. A systematic review on the frequency of BRCA promoter methylation in breast and ovarian carcinomas of BRCA germline mutation carriers: Mutually exclusive, or not? Crit Rev Oncol Hematol 2018; 127:29-41. [DOI: 10.1016/j.critrevonc.2018.05.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 04/10/2018] [Accepted: 05/09/2018] [Indexed: 12/12/2022] Open
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Donovan MG, Selmin OI, Romagnolo DF. Aryl Hydrocarbon Receptor Diet and Breast Cancer Risk. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2018; 91:105-127. [PMID: 29962921 PMCID: PMC6020732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Breast cancer is the most common type of cancer and leading cause of cancer mortality among women worldwide. However, the majority of breast malignancies are of sporadic etiology. Therefore, identifying risk-mitigating factors may significantly decrease the burden of breast cancer. Diet can have both a predisposing and protective role in breast tumorigenesis. However, establishing efficacy of dietary constituents for cancer prevention has been limited by suboptimal dietary assessment. There is a need to acquire new experimental evidence that can be used to discriminate beneficial from harmful dietary constituents. The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that is recognized as the mediator of halogenated and polycyclic aromatic hydrocarbon toxicities. Importantly, evidence points to a breast tumor-promoting role for the AhR. Preclinical and clinical studies suggest that the AhR is overexpressed in advanced and triple negative breast cancers. Several dietary constituents, namely flavonoid compounds, have demonstrated inhibitory effects on AhR activation. Given this background, in this paper we elaborate on the working hypothesis that a diet rich in AhR food agonists favors breast tumor development, whereas a diet rich in AhR food antagonists is protective. As an initial approach to developing an AhR diet hypothesis, we conducted a review of published studies reporting on the association between intake of AhR inhibitory foods and risk of breast cancer. To assist the reader with interpretation of the concepts leading to the AhR diet hypothesis, we have preceded this review with an overview of AhR biology and its role in breast cancer development.
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Affiliation(s)
- Micah G. Donovan
- The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ
| | - Ornella I. Selmin
- The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ,Department of Nutritional Sciences, University of Arizona, Tucson, AZ
| | - Donato F. Romagnolo
- The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ,Department of Nutritional Sciences, University of Arizona, Tucson, AZ,To whom all correspondence should be addressed: Donato F. Romagnolo, The University of Arizona Cancer Center, Room 3999A, The University of Arizona, Tucson, AZ, USA; Tel: 520-626-9751; Fax: 520-621-9446.
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75
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Steenbruggen TG, van Ramshorst MS, Kok M, Linn SC, Smorenburg CH, Sonke GS. Neoadjuvant Therapy for Breast Cancer: Established Concepts and Emerging Strategies. Drugs 2018; 77:1313-1336. [PMID: 28616845 DOI: 10.1007/s40265-017-0774-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In the last decade, the systemic treatment approach for patients with early breast cancer has partly shifted from adjuvant treatment to neoadjuvant treatment. Systemic treatment administration started as a 'one size fits all' approach but is currently customized according to each breast cancer subtype. Systemic treatment in a neoadjuvant setting is at least as effective as in an adjuvant setting and has several additional advantages. First, it enables response monitoring and provides prognostic information; second, it downstages the tumor, allowing for less extensive surgery, improved cosmetic outcomes, and reduced postoperative complications such as lymphedema; and third, it enables early development of new treatment strategies by using pathological complete remission as a surrogate outcome of event-free and overall survival. In this review we give an overview of the current standard of neoadjuvant systemic treatment strategies for the three main subtypes of breast cancer: hormone receptor-positive, triple-negative, and human epidermal growth factor receptor 2-positive. Additionally, we summarize drugs that are under investigation for use in the neoadjuvant setting.
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Affiliation(s)
- Tessa G Steenbruggen
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Mette S van Ramshorst
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Marleen Kok
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Sabine C Linn
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Carolien H Smorenburg
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Gabe S Sonke
- Department of Medical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands.
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Abstract
OPINION STATEMENT Triple-negative breast cancer (TNBC) accounts for 15% of all breast cancers and is associated with poor long-term outcomes compared to other breast cancer subtypes. Currently, chemotherapy remains the main modality of treatment for early-stage TNBC, as there is no approved targeted therapy for this subtype. The biologic heterogeneity of TNBC has hindered the development and evaluation of novel agents, but recent advancements in subclassifying TNBC have paved the way for further investigation of more effective systemic therapies, including cytotoxic and targeted agents. TNBC is enriched for germline BRCA mutation and for somatic deficiencies in homologous recombination DNA repair, the so-called "BRCAness" phenotype. Together, germline BRCA mutations and BRCAness are promising biomarkers of susceptibility to DNA-damaging therapy. Various investigational approaches are consequently being investigated in early-stage TNBC, including immune checkpoint inhibitors, platinum compounds, PI3K pathway inhibitors, and androgen receptor inhibitors. Due to the biological diversity found within TNBC, patient selection based on molecular biomarkers could aid the design of early-phase clinical trials, ultimately accelerating the clinical application of effective new agents. TNBC is an aggressive breast cancer subtype, for which multiple targeted approaches will likely be required for patient outcomes to be substantially improved.
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77
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Felicio PS, Melendez ME, Arantes LMRB, Kerr LM, Carraro DM, Grasel RS, Campacci N, Scapulatempo-Neto C, Fernandes GC, de Carvalho AC, Palmero EI. Genetic and epigenetic characterization of the BRCA1 gene in Brazilian women at-risk for hereditary breast cancer. Oncotarget 2018; 8:2850-2862. [PMID: 27926510 PMCID: PMC5356847 DOI: 10.18632/oncotarget.13750] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 11/22/2016] [Indexed: 01/13/2023] Open
Abstract
This study aimed to characterize women at-risk for hereditary BC regarding their clinical and molecular characteristics (mutation and methylation in the BRCA1 gene) and correlate the gene expression levels with histopathological, clinical and family history information. BRCA1 real time qPCR was performed to evaluate methylation status and gene expression. The study included 88 women grouped according to the BRCA1 mutational status: 23 BRCA1 mutated, 22 with a Variant of Unknown Significance (VUS) in BRCA1 and 43 BRCA1 WT. Most BRCA1 mutated tumors were triple negative (69.6%) and had histologic grade III (61.0%). Patients with VUS/WT BRCA1 were predominantly of luminal B subtype with histological grades I and II. Regarding the methylation profile, BRCA1 hypermethylation was observed in only two patients (both WT) and none had association with pathogenic BRCA1 mutation. In one patient methylation was present in both, tumor and normal tissues. Hypermethylated tumors had ductal histology, negativity for ER and occurred in < 50 years patients. Gene expression profile showed in all groups lower BRCA1 mRNA levels in tumor tissue compared to the adjacent breast tissue, thereby indicating the loss/decrease of gene function. No association was found between the levels of BRCA1 gene expression and family history of cancer. In summary, our findings suggested that methylation at the BRCA1 gene is not the “second” event in the development of BC in patients with germline mutations in BRCA1 and, although rare, BRCA1 epimutations can constitute an explanation for a fraction of HBOC families.
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Affiliation(s)
- Paula Silva Felicio
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, SP, Brazil
| | | | | | - Ligia Maria Kerr
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, SP, Brazil.,Department of Pathology, Barretos Cancer Hospital, Barretos, SP, Brazil
| | - Dirce Maria Carraro
- International Research Center, AC Camargo Cancer Center, São Paulo, SP, Brazil
| | | | - Natalia Campacci
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, SP, Brazil
| | - Cristovam Scapulatempo-Neto
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, SP, Brazil.,Department of Pathology, Barretos Cancer Hospital, Barretos, SP, Brazil
| | | | | | - Edenir Inêz Palmero
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, SP, Brazil
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78
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Co-targeting poly(ADP-ribose) polymerase (PARP) and histone deacetylase (HDAC) in triple-negative breast cancer: Higher synergism in BRCA mutated cells. Biomed Pharmacother 2018; 99:543-551. [DOI: 10.1016/j.biopha.2018.01.045] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Revised: 12/24/2017] [Accepted: 01/05/2018] [Indexed: 11/18/2022] Open
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79
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Absmaier M, Napieralski R, Schuster T, Aubele M, Walch A, Magdolen V, Dorn J, Gross E, Harbeck N, Noske A, Kiechle M, Schmitt M. PITX2 DNA-methylation predicts response to anthracycline-based adjuvant chemotherapy in triple-negative breast cancer patients. Int J Oncol 2018; 52:755-767. [PMID: 29328369 PMCID: PMC5807037 DOI: 10.3892/ijo.2018.4241] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 10/19/2017] [Indexed: 12/11/2022] Open
Abstract
Triple-negative breast cancer (TNBC) constitutes a heterogeneous breast cancer subgroup with poor prognosis; survival rates are likely to be lower with TNBC compared to other breast cancer subgroups. For this disease, systemic adjuvant chemotherapy regimens often yield suboptimal clinical results. To improve treatment regimens in TNBC, identification of molecular biomarkers may help to select patients for individualized adjuvant therapy. Evidence has accumulated that determination of the methylation status of the PITX2 gene provides a predictive value in various breast cancer subgroups, either treated with endocrine-based therapy or anthracycline-containing chemotherapy. To further explore the validity of this novel predictive candidate biomarker, in the present exploratory retrospective study, determination of the PITX2 DNA-methylation status was assessed for non-metastatic TNBC patients treated with adjuvant anthracycline-based chemotherapy by molecular analysis of breast cancer tissues. The PITX2 DNA-methylation status was determined in fresh-frozen tumor tissue specimens (n=56) by methylation-specific qRT-PCR (qMSP) and the data related to disease-free and overall survival, applying an optimized DNA-methylation score of 6.35%. For non-metastatic TNBC patients treated with adjuvant systemic anthracycline-based chemotherapy, a low PITX2 DNA-methylation status (<6.35) defines TNBC patients with poor disease-free and overall survival. Univariate and multivariate analyses demonstrate the statistically independent predictive value of PITX2 DNA-methylation. For non-metastatic TNBC patients, selective determination of the PITX2 DNA-methylation status may serve as a cancer biomarker for predicting response to anthracycline-based adjuvant chemotherapy. The assay based on methylation of the PIXT2 gene can be applied to frozen and routinely available formalin-fixed, paraffin-embedded (FFPE) breast cancer tumor tissues that will not only define those TNBC patients who may benefit from anthracycline-based chemotherapy but also those who should be spared the necessity of such potentially toxic treatment. Such patients should be allocated to alternative treatment options.
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Affiliation(s)
- Magdalena Absmaier
- Department of Obstetrics and Gynecology, Technische Universität München, Munich, Germany
| | - Rudolf Napieralski
- Department of Obstetrics and Gynecology, Technische Universität München, Munich, Germany
| | - Tibor Schuster
- Institute of Medical Statistics and Epidemiology, Technische Universität München, Munich, Germany
| | - Michaela Aubele
- Institute of Pathology, Helmholtz Zentrum Muenchen, Neuherberg, Germany
| | - Axel Walch
- Institute of Pathology, Helmholtz Zentrum Muenchen, Neuherberg, Germany
| | - Viktor Magdolen
- Department of Obstetrics and Gynecology, Technische Universität München, Munich, Germany
| | - Julia Dorn
- Department of Obstetrics and Gynecology, Technische Universität München, Munich, Germany
| | - Eva Gross
- Department of Obstetrics and Gynecology, Technische Universität München, Munich, Germany
| | - Nadia Harbeck
- Breast Center, Klinikum der Ludwig Maximilians Universität München, Munich, Germany
| | - Aurelia Noske
- Department of Pathology and Pathological Anatomy, Technische Universität München, Munich, Germany
| | - Marion Kiechle
- Department of Obstetrics and Gynecology, Technische Universität München, Munich, Germany
| | - Manfred Schmitt
- Department of Obstetrics and Gynecology, Technische Universität München, Munich, Germany
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Chalakur-Ramireddy NKR, Pakala SB. Combined drug therapeutic strategies for the effective treatment of Triple Negative Breast Cancer. Biosci Rep 2018; 38:BSR20171357. [PMID: 29298879 PMCID: PMC5789156 DOI: 10.1042/bsr20171357] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/12/2017] [Accepted: 01/01/2018] [Indexed: 12/19/2022] Open
Abstract
TNBC (Triple Negative Breast Cancer) is a subtype of breast cancer with an aggressive phenotype which shows high metastatic capability and poor prognosis. Owing to its intrinsic properties like heterogeneity, lack of hormonal receptors and aggressive phenotype leave chemotherapy as a mainstay for the treatment of TNBC. Various studies have demonstrated that chemotherapy alone or therapeutic drugs targeting TNBC pathways, epigenetic mechanisms and immunotherapy alone have not shown significant improvement in TNBC patients. On the other hand, a combination of therapeutic drugs or addition of chemotherapy with therapeutic drugs has shown substantial improvement in results and proven to be an effective strategy for TNBC treatment. This review sheds light on effective combinational drug strategies and current clinical trial status of various combinatorial drugs for the treatment of TNBC.
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Affiliation(s)
| | - Suresh B Pakala
- Biology Division, Indian Institute of Science Education and Research (IISER) Tirupati, Andhra Pradesh, India
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81
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Blandino G, Di Agostino S. New therapeutic strategies to treat human cancers expressing mutant p53 proteins. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:30. [PMID: 29448954 PMCID: PMC5815234 DOI: 10.1186/s13046-018-0705-7] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 02/12/2018] [Indexed: 12/14/2022]
Abstract
The tumor suppressor p53 plays a critical role to preserve DNA fidelity from diverse insults through the regulation of cell-cycle checkpoints, DNA repair, senescence and apoptosis. The TP53 is the most frequently inactivated gene in human cancers. This leads to the production of mutant p53 proteins that loose wild-type p53 tumor suppression functions and concomitantly acquire new oncogenic properties among which deregulated cell proliferation, increased chemoresistance, disruption of tissue architecture, promotion of migration, invasion and metastasis and several other pro-oncogenic activities. Mouse models show that the genetic reconstitution of the wild type p53 tumor suppression functions rescues tumor growth. This strongly supports the notion that either restoring wt-p53 activity or inhibiting mutant p53 oncogenic activity could provide an efficient strategy to treat human cancers. In this review we briefly summarize recent advances in the study of small molecules and compounds that subvert oncogenic activities of mutant p53 protein into wt-p53 tumor suppressor functions. We highlight inhibitors of signaling pathways aberrantly modulated by oncogenic mutant p53 proteins as promising therapeutic strategies. Finally, we consider the clinical applications of compounds targeting mutant p53 and the use of currently available drugs in the treatment of tumors expressing mutant p53 proteins.
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Affiliation(s)
- Giovanni Blandino
- Oncogenomic and Epigenetic Unit, Department of Diagnostic Research and Technological Innovation, IRCCS Regina Elena National Cancer Institute, 00144, Rome, Italy
| | - Silvia Di Agostino
- Oncogenomic and Epigenetic Unit, Department of Diagnostic Research and Technological Innovation, IRCCS Regina Elena National Cancer Institute, 00144, Rome, Italy.
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Rodríguez-Balada M, Roig B, Melé M, Salvat M, Martorell L, Borràs J, Gumà J. Germline promoter hypermethylation in BRCA1 and BRCA2 genes is not present in hereditary breast cancer patients. Clin Transl Oncol 2018; 20:1226-1231. [DOI: 10.1007/s12094-018-1837-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/21/2018] [Indexed: 01/16/2023]
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83
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Nakagomi H, Mochizuki H, Inoue M, Hirotsu Y, Amemiya K, Sakamoto I, Nakagomi S, Kubota T, Omata M. Combined annotation-dependent depletion score for BRCA1/2 variants in patients with breast and/or ovarian cancer. Cancer Sci 2018; 109:453-461. [PMID: 29215753 PMCID: PMC5797818 DOI: 10.1111/cas.13464] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/19/2017] [Accepted: 12/01/2017] [Indexed: 01/19/2023] Open
Abstract
Utility of combined annotation‐dependent depletion (CADD) score was recently reported to rank pathogenicity as C‐scores ranging 1‐99 for both confirmed deleterious mutation. Using C‐scores for BRCA1/2 variants, we tried to constitute the classification system for variant of uncertain significance (VUS), which had been a major problem of genetic testing for hereditary breast and/or ovarian cancer. We analyzed BRCA1/2 genes for 283 patients with breast and/or ovarian cancer. The deleterious mutation and missesne mutations, minor variant, and wild type of BRCA1 and ‐2 were 5, 27, 251 and 15, 85, 183, respectively. Meanwhile, the variants with C‐score ≥10 were involved in 19/283 (6.7%) in BRCA1 and 34/283 (12%) in BRCA2. All deleterious mutations were included in this group. Frequency of personal history and family history of ovarian cancer were significantly high, and frequency of serous adenocarcinoma of ovary and triple negative breast cancer was relatively high in the group with deleterious mutations. Similar findings were seen in patients with variants of C‐score ≥10. According to the C‐score and population frequency, we could define VUS for 11 patients out of 283 patients (3.9 CADD is useful to classify the variant of BRCA1/2 and selecting the patient who needs further segregation studies.
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Affiliation(s)
- Hiroshi Nakagomi
- Department of Breast Surgery, Yamanashi Central Hospital, Kofu, Japan
| | - Hitoshi Mochizuki
- Genome Analysis Center, Department of Gynecology, Yamanashi Central Hospital, Kofu, Japan
| | - Masayuki Inoue
- Department of Breast Surgery, Yamanashi Central Hospital, Kofu, Japan
| | - Yosuke Hirotsu
- Genome Analysis Center, Department of Gynecology, Yamanashi Central Hospital, Kofu, Japan
| | - Kenji Amemiya
- Genome Analysis Center, Department of Gynecology, Yamanashi Central Hospital, Kofu, Japan
| | - Ikuko Sakamoto
- Department of Gynecology, Yamanashi Central Hospital, Kofu, Japan
| | - Satoko Nakagomi
- Graduate School of Interdisciplinary Research, University of Yamanashi, Kofu, Japan
| | - Takeo Kubota
- Department of Child Studies, Seitoku University, Tokyo, Japan
| | - Masao Omata
- Genome Analysis Center, Department of Gynecology, Yamanashi Central Hospital, Kofu, Japan.,University of Tokyo, Tokyo, Japan
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84
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Privat M, Rudewicz J, Sonnier N, Tamisier C, Ponelle-Chachuat F, Bignon YJ. Antioxydation And Cell Migration Genes Are Identified as Potential Therapeutic Targets in Basal-Like and BRCA1 Mutated Breast Cancer Cell Lines. Int J Med Sci 2018; 15:46-58. [PMID: 29333087 PMCID: PMC5765739 DOI: 10.7150/ijms.20508] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/11/2017] [Indexed: 12/26/2022] Open
Abstract
Basal-like breast cancers are among the most aggressive cancers and effective targeted therapies are still missing. In order to identify new therapeutic targets, we performed Methyl-Seq and RNA-Seq of 10 breast cancer cell lines with different phenotypes. We confirmed that breast cancer subtypes cluster the RNA-Seq data but not the Methyl-Seq data. Basal-like tumor hypermethylated phenotype was not confirmed in our study but RNA-Seq analysis allowed to identify 77 genes significantly overexpressed in basal-like breast cancer cell lines. Among them, 48 were overexpressed in triple negative breast cancers of TCGA data. Some molecular functions were overrepresented in this candidate gene list. Genes involved in antioxydation, such as SOD1, MGST3 and PRDX or cadherin-binding genes, such as PFN1, ITGB1 and ANXA1, could thus be considered as basal like breast cancer biomarkers. We then sought if these genes were linked to BRCA1, since this gene is often inactivated in basal-like breast cancers. Nine genes were identified overexpressed in both basal-like breast cancer cells and BRCA1 mutated cells. Amongst them, at least 3 genes code for proteins implicated in epithelial cell migration and epithelial to mesenchymal transition (VIM, ITGB1 and RhoA). Our study provided several potential therapeutic targets for triple negative and BRCA1 mutated breast cancers. It seems that migration and mesenchymal properties acquisition of basal-like breast cancer cells is a key functional pathway in these tumors with a high metastatic potential.
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Affiliation(s)
- Maud Privat
- Université Clermont Auvergne, Centre Jean Perrin, INSERM, U1240 Imagerie Moléculaire et Stratégies Théranostiques, F-63000 Clermont Ferrand, France
- Département d'Oncogénétique, Centre Jean Perrin, F-63000 Clermont Ferrand, France
| | - Justine Rudewicz
- Département d'Oncogénétique, Centre Jean Perrin, F-63000 Clermont Ferrand, France
| | - Nicolas Sonnier
- Université Clermont Auvergne, Centre Jean Perrin, INSERM, U1240 Imagerie Moléculaire et Stratégies Théranostiques, F-63000 Clermont Ferrand, France
- Département d'Oncogénétique, Centre Jean Perrin, F-63000 Clermont Ferrand, France
- Biological Resources Center BB-0033-00075, Centre Jean Perrin, F-63000 Clermont Ferrand, France
| | - Christelle Tamisier
- Département d'Oncogénétique, Centre Jean Perrin, F-63000 Clermont Ferrand, France
| | - Flora Ponelle-Chachuat
- Université Clermont Auvergne, Centre Jean Perrin, INSERM, U1240 Imagerie Moléculaire et Stratégies Théranostiques, F-63000 Clermont Ferrand, France
- Département d'Oncogénétique, Centre Jean Perrin, F-63000 Clermont Ferrand, France
| | - Yves-Jean Bignon
- Université Clermont Auvergne, Centre Jean Perrin, INSERM, U1240 Imagerie Moléculaire et Stratégies Théranostiques, F-63000 Clermont Ferrand, France
- Département d'Oncogénétique, Centre Jean Perrin, F-63000 Clermont Ferrand, France
- Biological Resources Center BB-0033-00075, Centre Jean Perrin, F-63000 Clermont Ferrand, France
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85
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Metabolomics reveals novel blood plasma biomarkers associated to the BRCA1-mutated phenotype of human breast cancer. Sci Rep 2017; 7:17831. [PMID: 29259228 PMCID: PMC5736621 DOI: 10.1038/s41598-017-17897-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 12/01/2017] [Indexed: 01/09/2023] Open
Abstract
Hereditary breast and ovarian cancer syndrome (HBOC) is partly due to the presence of mutations in the BRCA genes. Triple-negative (TN) breast cancer (BC) shares histological characteristics with germline BRCA1 mutation-associated tumours. We have investigated the metabolic profiles of human breast cancer (BC) cell lines carrying BRCA1 pathogenic mutations by non-targeted liquid chromatography coupled to mass spectrometry technology. Based on our in vitro results, we performed a targeted metabolomic analysis of plasma samples from TN HBOC patients taking into account their BRCA1 genotype. BRCA1 promoter hypermethylation and the BRCAness phenotype of BC cell lines were also studied. The purpose of this study was to determine the metabolic signature of HBOC syndrome and TNBC patients and to evaluate the potential contribution of the metabolites identified to the genetic diagnosis of breast cancer. The present results show the existence of a differential metabolic signature for BC cells based on the BRCA1 functionality. None of the studied BC cell lines presented hypermethylation of the BRCA1 promoter region. We provide evidence of the existence of free methylated nucleotides capable of distinguishing plasma samples from HBOC patients as BRCA1-mutated and BRCA1 non-mutated, suggesting that they might be considered as BRCA1-like biomarkers for TNBC and HBOC syndrome.
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86
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Xu J, Sun T, Guo X, Wang Y, Jing M. Estrogen receptor-α promoter methylation is a biomarker for outcome prediction of cisplatin resistance in triple-negative breast cancer. Oncol Lett 2017; 15:2855-2862. [PMID: 29456719 PMCID: PMC5778783 DOI: 10.3892/ol.2017.7637] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 11/02/2017] [Indexed: 12/20/2022] Open
Abstract
A number of previous studies have indicated the presence of a link between estrogen receptor-α (ERα) methylation and triple-negative breast cancer (TNBC). However, the association between ERα methylation and drug resistance during the treatment of TNBC remains unclear. Methylation-specific polymerase chain reaction was used to investigate the methylation of ERα in the genomic DNA of 35 patients with TNBC who were defined as cisplatin-based chemotherapy-resistant using chemosensitivity testing. Survival probabilities by covariates were assessed using Kaplan-Meier estimator survival analysis and Cox's proportional hazards models, adjusting for age, menopausal status, tumor size, lymph node metastasis and ERα promoter DNA methylation. Of the 35 patients with TNBC analyzed, 8 exhibited ERα promoter DNA methylation. Cisplatin resistance was confirmed to be overwhelmingly associated with ERα methylation by univariate and multivariate analysis. Even in a limited analysis in patients with ERα methylation, the results generated from methylated tumor tissue and unmethylated tumor tissue revealed that expression of breast cancer type 1/2 susceptibility proteins was increased in ERα-methylated breast tumor tissue compared with in unmethylated tissue. The ERα methylation group tended to have significantly shorter progression-free (P=0.010) and overall (P=0.023) survival times compared with those in the unmethylated group. Similarly, shorter progression-free (P=0.024) and overall (P=0.018) survival times were observed in the cisplatin-resistant group compared with the cisplatin-non-resistant group. ERα methylation predicts a poor clinical outcome for patients with TNBC. The results of the present study indicated that ERα methylation may be a candidate surrogate biomarker for outcome prediction and cisplatin resistance in TNBC. Further investigation is required to identify potential biomarkers in a larger cohort in a prospective study.
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Affiliation(s)
- Junnan Xu
- Department of Medical Oncology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
| | - Tao Sun
- Department of Medical Oncology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
| | - Xiangyu Guo
- Department of Medical Oncology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
| | - Yan Wang
- Department of Medical Oncology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
| | - Mingxi Jing
- Department of Medical Oncology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110042, P.R. China
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87
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Romagnolo DF, Daniels KD, Grunwald JT, Ramos SA, Propper CR, Selmin OI. Epigenetics of breast cancer: Modifying role of environmental and bioactive food compounds. Mol Nutr Food Res 2017; 60:1310-29. [PMID: 27144894 DOI: 10.1002/mnfr.201501063] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 04/24/2016] [Accepted: 04/26/2016] [Indexed: 12/12/2022]
Abstract
SCOPE Reduced expression of tumor suppressor genes (TSG) increases the susceptibility to breast cancer. However, only a small percentage of breast tumors is related to family history and mutational inactivation of TSG. Epigenetics refers to non-mutational events that alter gene expression. Endocrine disruptors found in foods and drinking water may disrupt epigenetically hormonal regulation and increase breast cancer risk. This review centers on the working hypothesis that agonists of the aromatic hydrocarbon receptor (AHR), bisphenol A (BPA), and arsenic compounds, induce in TSG epigenetic signatures that mirror those often seen in sporadic breast tumors. Conversely, it is hypothesized that bioactive food components that target epigenetic mechanisms protect against sporadic breast cancer induced by these disruptors. METHODS AND RESULTS This review highlights (i) overlaps between epigenetic signatures placed in TSG by AHR-ligands, BPA, and arsenic with epigenetic alterations associated with sporadic breast tumorigenesis; and (ii) potential opportunities for the prevention of sporadic breast cancer with food components that target the epigenetic machinery. CONCLUSIONS Characterizing the overlap between epigenetic signatures elicited in TSG by endocrine disruptors with those observed in sporadic breast tumors may afford new strategies for breast cancer prevention with specific bioactive food components or diet.
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Affiliation(s)
- Donato F Romagnolo
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ, USA.,The University of Arizona Cancer Center, Tucson, AZ, USA
| | - Kevin D Daniels
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Jonathan T Grunwald
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Stephan A Ramos
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Catherine R Propper
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Ornella I Selmin
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ, USA.,The University of Arizona Cancer Center, Tucson, AZ, USA
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88
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Brianese RC, Nakamura KDDM, Almeida FGDSR, Ramalho RF, Barros BDDF, Ferreira ENE, Formiga MNDC, de Andrade VP, de Lima VCC, Carraro DM. BRCA1 deficiency is a recurrent event in early-onset triple-negative breast cancer: a comprehensive analysis of germline mutations and somatic promoter methylation. Breast Cancer Res Treat 2017; 167:803-814. [DOI: 10.1007/s10549-017-4552-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 10/24/2017] [Indexed: 01/01/2023]
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89
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RBR-type E3 ubiquitin ligase RNF144A targets PARP1 for ubiquitin-dependent degradation and regulates PARP inhibitor sensitivity in breast cancer cells. Oncotarget 2017; 8:94505-94518. [PMID: 29212245 PMCID: PMC5706891 DOI: 10.18632/oncotarget.21784] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 09/23/2017] [Indexed: 01/06/2023] Open
Abstract
Poly(ADP-ribose) polymerase 1 (PARP1), a critical DNA repair protein, is frequently upregulated in breast tumors with a key role in breast cancer progression. Consequently, PARP inhibitors have emerged as promising therapeutics for breast cancers with DNA repair deficiencies. However, relatively little is known about the regulatory mechanism of PARP1 expression and the determinants of PARP inhibitor sensitivity in breast cancer cells. Here, we report that ring finger protein 144A (RNF144A), a RING-between-RING (RBR)-type E3 ubiquitin ligase with an unexplored functional role in human cancers, interacts with PARP1 through its carboxy-terminal region containing the transmembrane domain, and targets PARP1 for ubiquitination and subsequent proteasomal degradation. Moreover, induced expression of RNF144A decreases PARP1 protein levels and renders breast cancer cells resistant to the clinical-grade PARP inhibitor olaparib. Conversely, knockdown of endogenous RNF144A increases PARP1 protein levels and enhances cellular sensitivity to olaparib. Together, these findings define RNF144A as a novel regulator of PARP1 protein abundance and a potential determinant of PARP inhibitor sensitivity in breast cancer cells, which may eventually guide the optimal use of PARP inhibitors in the clinic.
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90
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Belz JE, Kumar R, Baldwin P, Ojo NC, Leal AS, Royce DB, Zhang D, van de Ven AL, Liby KT, Sridhar S. Sustained Release Talazoparib Implants for Localized Treatment of BRCA1-deficient Breast Cancer. Am J Cancer Res 2017; 7:4340-4349. [PMID: 29158830 PMCID: PMC5695017 DOI: 10.7150/thno.18563] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 06/17/2017] [Indexed: 01/17/2023] Open
Abstract
Talazoparib, a potent PARP inhibitor, has shown promising clinical and pre-clinical activity by inducing synthetic lethality in cancers with germline Brca1/2 mutations. Conventional oral delivery of Talazoparib is associated with significant off-target effects, therefore we sought to develop new delivery systems in the form of an implant loaded with Talazoparib for localized, slow and sustained release of the drug at the tumor site in Brca1-deficient breast cancer. Poly(lactic-co-glycolic acid) (PLGA) implants (0.8 mm diameter) loaded with subclinical dose (25 or 50 µg) Talazoparib were fabricated and characterized. In vitro studies with Brca1-deficient W780 and W0069 breast cancer cells were conducted to test sensitivity to PARP inhibition. The in vivo therapeutic efficacy of Talazoparib implants was assessed following a one-time intratumoral injection in Brca1Co/Co;MMTV-Cre;p53+/- mice and compared to drug-free implants and oral gavage. Immunohistochemistry studies were performed on tumor sections using PCNA and γ-H2AX staining. Sustained release of Talazoparib was observed over 28 days in vitro. Mice treated with Talazoparib implants showed statistically significant tumor growth inhibition compared to those receiving drug-free implants or free Talazoparib orally. Talazoparib implants were well-tolerated at both drug doses and resulted in less weight loss than oral gavage. PARP inhibition in mice treated with Talazoparib implants significantly increased double-stranded DNA damage and decreased tumor cell proliferation as shown by PCNA and γ-H2AX staining as compared to controls. These results demonstrate that localized and sustained delivery of Talazoparib via implants has potential to provide superior treatment outcomes at sub-clinical doses with minimal toxicity in patients with BRCA1 deficient tumors.
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91
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BRCA1-like profile is not significantly associated with survival benefit of non-myeloablative intensified chemotherapy in the GAIN randomized controlled trial. Breast Cancer Res Treat 2017; 166:775-785. [PMID: 28822007 DOI: 10.1007/s10549-017-4444-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 08/05/2017] [Indexed: 01/06/2023]
Abstract
PURPOSE The BRCA1-like profile identifies tumors with a defect in homologous recombination due to inactivation of BRCA1. This profile has been shown to predict which stage III breast cancer patients benefit from myeloablative, DNA double-strand-break-inducing chemotherapy. We tested the predictive potential of the BRCA1-like profile for adjuvant non-myeloablative, intensified dose-dense chemotherapy in the GAIN trial. METHODS Lymph node positive breast cancer patients were randomized to 3 × 3 dose-dense cycles of intensified epirubicin, paclitaxel, and cyclophosphamide (ETC) or 4 cycles concurrent epirubicin and cyclophosphamide followed by 10 cycles of weekly paclitaxel combined with 4 cycles capecitabine (EC-TX). Only triple negative breast cancer patients (TNBC) for whom tissue was available were included in these planned analyses. BRCA1-like or non-BRCA1-like copy number profiles were derived from low coverage sequencing data. RESULTS 119 out of 163 TNBC patients (73%) had a BRCA1-like profile. After median follow-up of 83 months, disease free survival (DFS) was not significantly different between BRCA1-like and non-BRCA1-like patients [adjusted hazard ratio (adj.HR) 1.02; 95% confidence interval (CI) 0.55-1.86], neither was overall survival (OS; adj.HR 1.26; 95% CI 0.58-2.71). When split by BRCA1-like status, DFS and OS were not significantly different between treatments. However, EC-TX seemed to result in a trend to an improvement in DFS in patients with a BRCA1-like tumor, while the reverse accounted for ETC treatment in patients with a non-BRCA1-like tumor (p for interaction = 0.094). CONCLUSIONS The BRCA1-like profile is not associated with survival benefit for a non-myeloablative, intensified regimen in this study population. Considering the limited cohort size, capecitabine might have additional benefit for TNBC patients.
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92
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Clinical Characteristics in Patients with Triple Negative Breast Cancer. Int J Breast Cancer 2017; 2017:1796145. [PMID: 28912973 PMCID: PMC5585655 DOI: 10.1155/2017/1796145] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 07/16/2017] [Indexed: 12/26/2022] Open
Abstract
Purpose The purpose of this study was to compare and contrast the clinical characteristics of the triple negative breast cancer (TNBC) and non-TNBC patients, with a particular focus on genetic susceptibility and risk factors prior to diagnosis. Methods Our institutional database was queried for all patients diagnosed with invasive breast cancer between January 2010 and May 2016. Results Out of a total of 1964 patients, 190 (10%) patients had TNBC. The median age for both TNBC and non-TNBC was 59 years. There was a significantly higher proportion of African American and Asian patients with TNBC (p = 0.0003) compared to patients with non-TNBC. BRCA1 and BRCA2 were significantly associated with TNBC (p < 0.0001, p = 0.0007). A prior history of breast cancer was significantly associated with TNBC (p = 0.0003). There was no relationship observed between TNBC and a history of chemoprevention or patients who had a history of AH or LCIS. Conclusions We found that having Asian ancestry, a prior history of breast cancer, and a BRCA1 or BRCA2 mutation all appear to be positively associated with TNBC. In order to develop more effective treatments, better surveillance, and improved prevention strategies, it is necessary to improve our understanding of the population at risk for TNBC.
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93
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The role of BRCA status on prognosis in patients with triple-negative breast cancer. Oncotarget 2017; 8:87151-87162. [PMID: 29152070 PMCID: PMC5675622 DOI: 10.18632/oncotarget.19895] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 07/18/2017] [Indexed: 02/05/2023] Open
Abstract
Studies have showed that dysfunction in the breast cancer susceptibility gene (BRCA) is associated with triple-negative breast cancer (TNBC); however, its effect on patient survival remains controversial. We investigated the distribution of BRCA1/2 mutations in unselected Chinese patients with TNBC and explored their roles in prognosis. Then a systematic review and meta-analysis were performed to evaluate the prognostic role of BRCA dysfunction, including BRCA1/2 germline/somatic mutations, BRCA1 promoter methylation, and low BRCA1 protein expression in TNBC patients. Pooled hazard ratios with 95% confidence intervals were estimated to determine the association between BRCA dysfunction and survival. Our results showed a high frequency of BRCA1/2 mutations, especially germline BRCA1 variants, were associated with bilateral breast cancer. Although no correlations were found between BRCA1/2 mutations and recurrence-free survival (RFS) or overall survival (OS). In the meta-analysis, patients with BRCA1 promoter methylation showed poor OS. However, there was a favorable impact on disease free survival (DFS) for TNBC patients with BRCA1 promoter methylation when received adjuvant-chemotherapy. In conclusion, BRCA1/2 mutations were associated with bilateral breast cancer and BRCA1 promoter methylation may have a prognostic effect on TNBC.
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94
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Jitariu AA, Cîmpean AM, Ribatti D, Raica M. Triple negative breast cancer: the kiss of death. Oncotarget 2017; 8:46652-46662. [PMID: 28445140 PMCID: PMC5542300 DOI: 10.18632/oncotarget.16938] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 03/19/2017] [Indexed: 12/22/2022] Open
Abstract
One of the most controversial women malignancies, triple negative breast cancers (TNBCs) are critically overviewed here, being focused on data useful in clinical practice or to improve the therapy and patients survival. TNBCs "choose" young women and its "kiss" is, unfortunately deadly in most cases. Currently, few sparse data are available in literature concerning the origins of TNBC. Vasculogenic mimicry detected in TNBCs, seems to be determined by a population of CD133+ cells and may be stimulated by different pharmacological agents such sunitinib. Despite the fact that TNBCs do not usually metastasize through the lymphatic pathways, TNBCs may be characterized by lymphatic invasion and by an increased lymphatic microvascular density. If TNBCs treatment depends on the molecular profile of the tumor, the same statement may be postulated for TNBCs metastasis. Whether metastases have a similar phenotype as the primary tumor remains an enigma. Therefore, the question: 'Could TNBC be subject to a standardized, unanimously accepted therapeutic strategy or is it strictly subclass-dependent?' remains to be further investigated.
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Affiliation(s)
- Adriana-Andreea Jitariu
- Department of Microscopic Morphology/Histology, Angiogenesis Research Center, Victor Babeş University of Medicine and Pharmacy, Timişoara, Romania
| | - Anca Maria Cîmpean
- Department of Microscopic Morphology/Histology, Angiogenesis Research Center, Victor Babeş University of Medicine and Pharmacy, Timişoara, Romania
| | - Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy
- National Cancer Institute “ Giovanni Paolo II”, Bari, Italy
| | - Marius Raica
- Department of Microscopic Morphology/Histology, Angiogenesis Research Center, Victor Babeş University of Medicine and Pharmacy, Timişoara, Romania
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95
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Lymph node status as a prognostic factor in BRCA-positive breast cancer. J Surg Res 2017; 215:125-131. [PMID: 28688637 DOI: 10.1016/j.jss.2017.03.065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/21/2017] [Accepted: 03/30/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND The incidence of ipsilateral breast tumor recurrence (IBTR) seems to be higher in BRCA-positive than sporadic breast cancer. We compared the oncologic outcomes of BRCA-positive breast cancer patients managed with breast-conserving surgery, simple mastectomy or mastectomy followed by immediate reconstruction. MATERIALS/METHODS Thirty four BRCA-positive breast cancers were grouped according to surgical treatment: breast-conserving surgery (n = 17), simple mastectomy (n = 9), and mastectomy followed by immediate reconstruction (n = 8). Clinicopathologic factors and oncologic outcomes were compared during a 3-y mean follow-up. RESULTS Neoadjuvant radiotherapy and nodal and pathologic stages differed significantly between the breast-conserving and simple mastectomy groups. There was no oncologic event in the breast-conserving group during follow-up; however, IBTR and distant metastasis occurred in the simple mastectomy and mastectomy followed by immediate reconstruction groups. Nodal stage was associated with IBTR in both these groups whereas pathologic stage was associated with distant metastasis only in the simple mastectomy group. CONCLUSIONS Although there were no differences in oncologic outcomes between the three groups, the nodal stage was strongly associated with IBTR in patients with BRCA-positive breast cancer. IBTR may be attributable to nodal stage and pathologic tumor stage.
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96
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Darbeheshti F, Izadi P, Emami Razavi AN, Yekaninejad MS, Tavakkoly Bazzaz J. Comparison of BRCA1 Expression between Triple-Negative and Luminal Breast Tumors. IRANIAN BIOMEDICAL JOURNAL 2017. [PMID: 28646826 PMCID: PMC5889506 DOI: 10.22034/ibj.22.3.210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background: Previous studies have suggested that BRCA1 dysregulation has been shown to have a role in triple-negative phenotypic manifestation. However, differences of BRCA1 expression, as a tumor suppressor gene, have rarely been investigated between luminal and triple-negative breast tumors. Therefore, the present study attempted to compare the BRCA1 expression in triple-negative with luminal breast tumors and its association with the clinicopathologic characteristics of patients. Methods: BRCA1 expression was evaluated by real-time PCR in 26 triple-negative and 27 luminal breast tumors. Results: The results revealed that there is a high frequency of BRCA1 underexpression in both triple-negative and luminal breast tumors. The BRCA1 underexpression was related to young age at diagnosis, lymph node involvement, and grade III tumors. Conclusion: The observations suggest that decreased BRCA1 expression, regardless of tumor subtype, has a general role in breast malignancy and associated with poor prognostic features in breast tumors.
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Affiliation(s)
- Farzaneh Darbeheshti
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Pantea Izadi
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Nader Emami Razavi
- Iran National Tumor Bank, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran
| | - Mir Saeed Yekaninejad
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Javad Tavakkoly Bazzaz
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Romagnolo DF, Donovan MG, Papoutsis AJ, Doetschman TC, Selmin OI. Genistein Prevents BRCA1 CpG Methylation and Proliferation in Human Breast Cancer Cells with Activated Aromatic Hydrocarbon Receptor. Curr Dev Nutr 2017; 1:e000562. [PMID: 29955703 PMCID: PMC5998349 DOI: 10.3945/cdn.117.000562] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/02/2017] [Accepted: 05/19/2017] [Indexed: 01/11/2023] Open
Abstract
Background: Previous studies have suggested a causative role for agonists of the aromatic hydrocarbon receptor (AhR) in the etiology of breast cancer 1, early-onset (BRCA-1)-silenced breast tumors, for which prospects for treatment remain poor. Objectives: We investigated the regulation of BRCA1 by the soy isoflavone genistein (GEN) in human estrogen receptor α (ERα)-positive Michigan Cancer Foundation-7 (MCF-7) and ERα-negative sporadic University of Arizona Cell Culture-3199 (UACC-3199) breast cancer cells, respectively, with inducible and constitutively active AhR. Methods: In MCF-7 cells, we analyzed the dose- and time-dependent effects of GEN and (-)-epigallocatechin-3-gallate (EGCG) control, selected as prototype dietary DNA methyltransferase (DNMT) inhibitors, on BRCA-1 expression after AhR activation with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and in TCDD-washout experiments. We compared the effects of GEN and EGCG on BRCA1 cytosine-phosphate-guanine (CpG) methylation and cell proliferation. Controls for DNA methylation and proliferation were changes in expression of DNMT-1, cyclin D1, and p53, respectively. In UACC-3199 cells, we compared the effects of GEN and α-naphthoflavone (αNF; 7,8-benzoflavone), a synthetic flavone and AhR antagonist, on BRCA1 expression and CpG methylation, cyclin D1, and cell growth. Finally, we examined the effects of GEN and αNF on BRCA1, AhR-inducible cytochrome P450 (CYP)-1A1 (CYP1A1) and CYP1B1, and AhR mRNA expression. Results: In MCF-7 cells, GEN exerted dose- and time-dependent preventative effects against TCDD-dependent downregulation of BRCA-1. After TCDD washout, GEN rescued BRCA-1 protein expression while reducing DNMT-1 and cyclin D1. GEN and EGCG reduced BRCA1 CpG methylation and cell proliferation associated with increased p53. In UACC-3199 cells, GEN reduced BRCA1 and estrogen receptor-1 (ESR1) CpG methylation, cyclin D1, and cell growth while inducing BRCA-1 and CYP1A1. Conclusions: Results suggest preventative effects for GEN and EGCG against BRCA1 CpG methylation and downregulation in ERα-positive breast cancer cells with activated AhR. GEN and flavone antagonists of AhR may be useful for reactivation of BRCA1 and ERα via CpG demethylation in ERα-negative breast cancer cells harboring constitutively active AhR.
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Affiliation(s)
- Donato F Romagnolo
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ
- Department of The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ
| | - Micah G Donovan
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ
- Department of The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ
| | - Andreas J Papoutsis
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ
- Department of The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ
| | - Tom C Doetschman
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, AZ
- Department of The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ
| | - Ornella I Selmin
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ
- Department of The University of Arizona Cancer Center, The University of Arizona, Tucson, AZ
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98
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Vos S, Moelans CB, van Diest PJ. BRCA promoter methylation in sporadic versus BRCA germline mutation-related breast cancers. Breast Cancer Res 2017; 19:64. [PMID: 28569220 PMCID: PMC5452400 DOI: 10.1186/s13058-017-0856-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 05/16/2017] [Indexed: 02/08/2023] Open
Abstract
Background In breast cancer, BRCA promoter hypermethylation and BRCA germline mutations are said to occur together rarely, but this property has not yet been translated into a clinical test. Our aim in this study was to investigate the diagnostic value of BRCA1/2 methylation in distinguishing breast carcinomas of BRCA1 and BRCA2 germline mutation carriers from sporadic breast carcinomas using a recently developed BRCA methylation assay based on methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA). Methods MS-MLPAs were performed to assess BRCA1 and BRCA2 methylation in breast carcinoma tissues from 39 BRCA1 and 33 BRCA2 germline mutation carriers, 80 patients with sporadic breast cancer, and normal breast tissues from 5 BRCA1 and 4 BRCA2 mutation carriers and 5 nonmutation carriers. Results Methylation frequencies varied considerably between CpG sites across the BRCA1 and BRCA2 promoters. Some CpG sites were methylated more frequently in BRCA1/2-related than in sporadic carcinomas, whereas other CpG sites were methylated more frequently in sporadic carcinomas, with large variances in sensitivity and specificity as a consequence. Conclusions The diagnostic value of BRCA promoter methylation analysis in distinguishing BRCA1/2-related from sporadic breast carcinomas seems to be considerably dependent on the targeted CpG sites. These findings are important for adequate use of BRCA methylation analysis as a prescreening tool for BRCA germline genetic testing or to identify BRCAness patients who may benefit from targeted therapies such as poly(adenosine diphosphate-ribose) polymerase inhibitors.
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Affiliation(s)
- Shoko Vos
- Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, 3584, CX, Utrecht, The Netherlands.
| | - Cathy Beatrice Moelans
- Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, 3584, CX, Utrecht, The Netherlands
| | - Paul Joannes van Diest
- Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, 3584, CX, Utrecht, The Netherlands
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99
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Du Y, Yamaguchi H, Hsu JL, Hung MC. PARP inhibitors as precision medicine for cancer treatment. Natl Sci Rev 2017. [DOI: 10.1093/nsr/nwx027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AbstractPersonalized or precision medicine is an emerging treatment approach tailored to individuals or certain groups of patients based on their unique characteristics. These types of therapies guided by biomarkers tend to be more effective than traditional approaches, especially in cancer. The inhibitor against poly (ADP-ribose) polymerase (PARP), olaparib (Lynparza, AstraZeneca), which was approved by the US Food and Drug Administration (FDA) in 2014, demonstrated efficacy specifically for ovarian cancer patients harboring mutations in BRCA genes, which encode proteins in DNA double-strand break repairs. However, the response to PARP inhibitors has been less encouraging in other cancer types that also carry defects in the BRCA genes. Thus, furthering our understanding of the underlying mechanism of PARP inhibitors and resistance is critical to improve their efficacy. In this review, we summarize the results of preclinical studies and the clinical application of PARP inhibitors, and discuss the future direction of PARP inhibitors as a potential marker-guided personalized medicine for cancer treatment.
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Affiliation(s)
- Yi Du
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston 77030
| | - Hirohito Yamaguchi
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston 77030
| | - Jennifer L. Hsu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston 77030
- Graduate Institute of Biomedical Sciences and Center for Molecular Medicine, China Medical University, Taichung 40402
- Department of Biotechnology, Asia University, Taichung 41354
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston 77030
- Graduate Institute of Biomedical Sciences and Center for Molecular Medicine, China Medical University, Taichung 40402
- Department of Biotechnology, Asia University, Taichung 41354
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100
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Lee JM, Hays JL, Chiou VL, Annunziata CM, Swisher EM, Harrell MI, Yu M, Gordon N, Sissung TM, Ji J, Figg WD, Minasian L, Lipkowitz S, Wood BJ, Doroshow J, Kohn EC. Phase I/Ib study of olaparib and carboplatin in women with triple negative breast cancer. Oncotarget 2017; 8:79175-79187. [PMID: 29108297 PMCID: PMC5668030 DOI: 10.18632/oncotarget.16577] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 03/13/2017] [Indexed: 12/18/2022] Open
Abstract
PURPOSE To investigate the safety, activity, and potential biomarkers of response to olaparib and carboplatin combination in sporadic triple negative breast cancer (TNBC). EXPERIMENTAL DESIGN: Metastatic or recurrent TNBC patients with no germline BRCA mutation or with BRCAPro scores <10% and a negative family history were eligible. A 3+3 dose escalation tested olaparib capsules (400mg bid, days1-7) with carboplatin AUC3-5 on day1 or 2 every 21 days, ≤ 8 cycles, with olaparib 400mg bid maintenance. Peripheral blood mononuclear cells were collected for polymorphisms and PAR levels, and paired tumor biopsies (pre-/post-cycle 1) for proteomics and apoptosis endpoints. RESULTS 28 women were treated (median 5 prior regimens [0-12]). Dose-limiting toxicity was thrombocytopenia, and symptomatic hyponatremia with carboplatin AUC5. The maximum tolerated dose was olaparib 400mg bid+carboplatin AUC4. Grade 3 and 4 adverse events included neutropenia (36%), thrombocytopenia (11%), and anemia (11%). Responses included 1 complete response (CR; 69+months) and 5/27 partial responses (19%; median 4months [4-7]), for a response rate of 22%. Biomarker findings did not correlate with response. The long-term CR patient with prior negative BRCA testing was found to have deletion of BRCA1 exons1-2. CONCLUSIONS The olaparib/carboplatin combination is tolerable and has modest activity in sporadic TNBC patients. Further evaluation of predictive biomarkers to identify those with BRCA wild type who had response is warranted.
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Affiliation(s)
- Jung-Min Lee
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - John L Hays
- Division of Medical Oncology, Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Victoria L Chiou
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Christina M Annunziata
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Elizabeth M Swisher
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Washington, Seattle, WA, USA
| | - Maria I Harrell
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Washington, Seattle, WA, USA
| | - Minshu Yu
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Nicolas Gordon
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Tristan M Sissung
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Jiuping Ji
- National Clinical Target Validation Laboratory, Leidos Biomedical Research Inc, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - William D Figg
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Lori Minasian
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Stanley Lipkowitz
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Bradford J Wood
- Center for Interventional Oncology, Radiology, and Imaging Sciences, Clinical Center and National Cancer Institute, NIH, Bethesda, MD, USA
| | - James Doroshow
- Division of Cancer Treatment and Diagnosis, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Elise C Kohn
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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