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Hilton HN, Patterson McDonald LJ, Santucci N, van der Bent FR, Silvestri A, Graham JD, Clarke CL. BRCA1 Attenuates Progesterone Effects on Proliferation and NFκB Activation in Normal Human Mammary Epithelial Cells. J Mammary Gland Biol Neoplasia 2019; 24:257-270. [PMID: 31104199 DOI: 10.1007/s10911-019-09431-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 04/21/2019] [Indexed: 12/25/2022] Open
Abstract
Germline mutations in the breast cancer susceptibility gene BRCA1, encoding a tumor suppressor protein, greatly enhance the risk of breast and ovarian cancer. This tissue-specificity implicates the role of ovarian hormones. Indeed, BRCA1 has been demonstrated to regulate the signalling axis of the hormone, progesterone, and its receptor, the progesterone receptor (PR), and progesterone action has been implicated in BRCA1-related tumorigenesis. BRCA1 also plays important roles in oxidative stress and activating nuclear factor kappaB (NFκB) signalling pathways. Like wildtype BRCA1 function, PR signalling has also been shown to inhibit NFκB activation. Although PR and BRCA1 networks are known to interact, their interaction at the level of NFκB activation in the human breast is not understood. This study investigates the effect of reduced BRCA1 expression on proliferation and NFκB activation in human breast cells, and the impact of progesterone on these effects. The major findings are that: 1) Reduced BRCA1 levels inhibit cell growth in normal human mammary cells and breast cancer cells; 2) Reduced BRCA1 levels stimulated inflammatory targets and NFκB activity in normal human mammary cells; 3) Wildtype BRCA1 inhibited the pro-proliferative effects of progesterone in normal mammary epithelial cells, and; 4) Progesterone attenuated BRCA1-mediated NFκB activation in normal human mammary cells. These data have important implications for our understanding of progesterone action in BRCA1 mutation carriers, and how inhibition of this action may potentially delay tumorigenesis or impart a more favourable prognosis.
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Affiliation(s)
- H N Hilton
- Centre for Cancer Research, The Westmead Institute for Medical Research, Sydney Medical School - Westmead, The University of Sydney, Westmead, NSW, 2145, Australia
| | - L J Patterson McDonald
- Centre for Cancer Research, The Westmead Institute for Medical Research, Sydney Medical School - Westmead, The University of Sydney, Westmead, NSW, 2145, Australia
| | - N Santucci
- Centre for Cancer Research, The Westmead Institute for Medical Research, Sydney Medical School - Westmead, The University of Sydney, Westmead, NSW, 2145, Australia
| | - F R van der Bent
- Department of Medicine, Academic Medical Center, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - A Silvestri
- Centre for Cancer Research, The Westmead Institute for Medical Research, Sydney Medical School - Westmead, The University of Sydney, Westmead, NSW, 2145, Australia
| | - J D Graham
- Centre for Cancer Research, The Westmead Institute for Medical Research, Sydney Medical School - Westmead, The University of Sydney, Westmead, NSW, 2145, Australia.
| | - C L Clarke
- Centre for Cancer Research, The Westmead Institute for Medical Research, Sydney Medical School - Westmead, The University of Sydney, Westmead, NSW, 2145, Australia
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Risk-Reducing Bilateral Salpingo-Oophorectomy for BRCA Mutation Carriers and Hormonal Replacement Therapy: If It Should Rain, Better a Drizzle than a Storm. ACTA ACUST UNITED AC 2019; 55:medicina55080415. [PMID: 31362334 PMCID: PMC6722681 DOI: 10.3390/medicina55080415] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 07/16/2019] [Indexed: 12/18/2022]
Abstract
Women carrying a BRCA mutation have an increased risk of developing breast and ovarian cancer. The most effective strategy to reduce this risk is the bilateral salpingo-oophorectomy, with or without additional risk-reducing mastectomy. Risk-reducing bilateral salpingo-oophorectomy (RRBSO) is recommended between age 35 and 40 and between age 40 and 45 years for women carriers of BRCA1 and BRCA2 mutations, respectively. Consequently, most BRCA mutation carriers undergo this procedure prior to a natural menopause and develop an anticipated lack of hormones. This condition has a detrimental impact on various systems, affecting both the quality of life and longevity; in particular, women carrying BRCA1 mutation, who are likely to have surgery earlier as compared to BRCA2. Hormonal replacement therapy (HRT) is the only effective strategy able to significantly compensate the hormonal deprivation and counteract menopausal symptoms, both in spontaneous and surgical menopause. Although recent evidence suggests that HRT does not diminish the protective effect of RRBSO in BRCA mutation carriers, concerns regarding the safety of estrogen and progesterone intake reduce the use in this setting. Furthermore, there is strong data demonstrating that the use of estrogen alone after RRBSO does not increase the risk of breast cancer among women with a BRCA1 mutation. The additional progesterone intake, mandatory for the protection of the endometrium during HRT, warrants further studies. However, when hysterectomy is performed at the time of RRBSO, the indication of progesterone addition decays and consequently its potential effect on breast cancer risk. Similarly, in patients conserving the uterus but undergoing risk-reducing mastectomy, the addition of progesterone should not raise significant concerns for breast cancer risk anymore. Therefore, BRCA mutation carriers require careful counselling about the scenarios following their RRBSO, menopausal symptoms or the fear associated with HRT use.
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53
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Tharmapalan P, Mahendralingam M, Berman HK, Khokha R. Mammary stem cells and progenitors: targeting the roots of breast cancer for prevention. EMBO J 2019; 38:e100852. [PMID: 31267556 PMCID: PMC6627238 DOI: 10.15252/embj.2018100852] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 03/11/2019] [Accepted: 04/11/2019] [Indexed: 12/24/2022] Open
Abstract
Breast cancer prevention is daunting, yet not an unsurmountable goal. Mammary stem and progenitors have been proposed as the cells-of-origin in breast cancer. Here, we present the concept of limiting these breast cancer precursors as a risk reduction approach in high-risk women. A wealth of information now exists for phenotypic and functional characterization of mammary stem and progenitor cells in mouse and human. Recent work has also revealed the hormonal regulation of stem/progenitor dynamics as well as intrinsic lineage distinctions between mammary epithelial populations. Leveraging these insights, molecular marker-guided chemoprevention is an achievable reality.
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Affiliation(s)
| | - Mathepan Mahendralingam
- Princess Margaret Cancer CentreUniversity Health NetworkUniversity of TorontoTorontoONCanada
| | - Hal K Berman
- Princess Margaret Cancer CentreUniversity Health NetworkUniversity of TorontoTorontoONCanada
| | - Rama Khokha
- Princess Margaret Cancer CentreUniversity Health NetworkUniversity of TorontoTorontoONCanada
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54
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Gorodetska I, Kozeretska I, Dubrovska A. BRCA Genes: The Role in Genome Stability, Cancer Stemness and Therapy Resistance. J Cancer 2019; 10:2109-2127. [PMID: 31205572 PMCID: PMC6548160 DOI: 10.7150/jca.30410] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 02/20/2019] [Indexed: 12/14/2022] Open
Abstract
Carcinogenesis is a multistep process, and tumors frequently harbor multiple mutations regulating genome integrity, cell division and death. The integrity of cellular genome is closely controlled by the mechanisms of DNA damage signaling and DNA repair. The association of breast cancer susceptibility genes BRCA1 and BRCA2 with breast and ovarian cancer development was first demonstrated over 20 years ago. Since then the germline mutations within these genes were linked to genomic instability and increased risk of many other cancer types. Genomic instability is an engine of the oncogenic transformation of non-tumorigenic cells into tumor-initiating cells and further tumor evolution. In this review we discuss the biological functions of BRCA1 and BRCA2 genes and the role of BRCA mutations in tumor initiation, regulation of cancer stemness, therapy resistance and tumor progression.
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Affiliation(s)
- Ielizaveta Gorodetska
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Iryna Kozeretska
- Department of General and Medical Genetics, ESC "The Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Anna Dubrovska
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany; German Cancer Consortium (DKTK), Partner site Dresden, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany
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55
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Murthy P, Muggia F. Women's cancers: how the discovery of BRCA genes is driving current concepts of cancer biology and therapeutics. Ecancermedicalscience 2019; 13:904. [PMID: 30915162 PMCID: PMC6411414 DOI: 10.3332/ecancer.2019.904] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Indexed: 12/15/2022] Open
Abstract
Over the last two decades, discoveries related to the breast cancer susceptibility genes 1 and 2 (BRCA1 and BRCA2) have profoundly changed our understanding and management of hereditary breast and ovarian cancers. The concept of synthetic lethality, which arises when cells become vulnerable to a combination of deficiencies in DNA repair, has driven the expanding roles of poly (adenosine diphosphate (ADP)-ribose) polymerase inhibitors in breast and ovarian cancers, and prevention strategies are taking into account the tissue specificity, natural history (fallopian tube origin of some high-grade serous ovarian cancers) and hormone sensitivity of BRCA-associated cancers. Current research has focussed on further elucidating the roles of BRCA proteins in DNA repair, investigating other key DNA repair processes and proteins and linking aberrant DNA repair with carcinogenesis. The ultimate goal is to translate this evolving knowledge into improving the clinical care and treatment of patients with pathogenic BRCA variants or other deficiencies in homologous recombination (HR). In this review, we will discuss 1) the role of BRCA proteins in DNA repair; 2) emerging concepts in the biology of HR deficiency and 3) implications for prevention and treatment.
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Affiliation(s)
- Pooja Murthy
- New York University School of Medicine, New York, NY 10016, USA
- Maimonides Cancer Center, Brooklyn, NY 11220, USA
| | - Franco Muggia
- New York University School of Medicine, New York, NY 10016, USA
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56
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Infante M, Fabi A, Cognetti F, Gorini S, Caprio M, Fabbri A. RANKL/RANK/OPG system beyond bone remodeling: involvement in breast cancer and clinical perspectives. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:12. [PMID: 30621730 PMCID: PMC6325760 DOI: 10.1186/s13046-018-1001-2] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 12/11/2018] [Indexed: 12/21/2022]
Abstract
RANKL/RANK/OPG system consists of three essential signaling molecules: i) the receptor activator of nuclear factor (NF)-kB-ligand (RANKL), ii) the receptor activator of NF-kB (RANK), and iii) the soluble decoy receptor osteoprotegerin (OPG). Although this system is critical for the regulation of osteoclast differentiation/activation and calcium release from the skeleton, different studies have elucidated its specific role in mammary gland physiology and hormone-driven epithelial proliferation during pregnancy. Of note, several data suggest that progesterone induces mammary RANKL expression in mice and humans. In turn, RANKL controls cell proliferation in breast epithelium under physiological conditions typically associated with higher serum progesterone levels, such as luteal phase of the menstrual cycle and pregnancy. Hence, RANKL/RANK system can be regarded as a major downstream mediator of progesterone-driven mammary epithelial cells proliferation, potentially contributing to breast cancer initiation and progression. Expression of RANKL, RANK, and OPG has been detected in breast cancer cell lines and in human primary breast cancers. To date, dysregulation of RANKL/RANK/OPG system at the skeletal level has been widely documented in the context of metastatic bone disease. In fact, RANKL inhibition through the RANKL-blocking human monoclonal antibody denosumab represents a well-established therapeutic option to prevent skeletal-related events in metastatic bone disease and adjuvant therapy-induced bone loss in breast cancer. On the other hand, the exact role of OPG in breast tumorigenesis is still unclear. This review focuses on molecular mechanisms linking RANKL/RANK/OPG system to mammary tumorigenesis, highlighting pre-clinical and clinical evidence for the potential efficacy of RANKL inhibition as a prevention strategy and adjuvant therapy in breast cancer settings.
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Affiliation(s)
- Marco Infante
- Unit of Endocrinology and Metabolic Diseases, Department of Systems Medicine, CTO A. Alesini Hospital, ASL Roma 2, University Tor Vergata, Via San Nemesio, 21, 00145, Rome, Italy
| | - Alessandra Fabi
- Division of Medical Oncology 1, Regina Elena National Cancer Institute, Via Elio Chianesi, 53, 00144, Rome, Italy
| | - Francesco Cognetti
- Division of Medical Oncology 1, Regina Elena National Cancer Institute, Via Elio Chianesi, 53, 00144, Rome, Italy
| | - Stefania Gorini
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Pisana, Via di Val Cannuta, 247, 00166, Rome, Italy
| | - Massimiliano Caprio
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Pisana, Via di Val Cannuta, 247, 00166, Rome, Italy.,Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Via di Val Cannuta, 247, 00166, Rome, Italy
| | - Andrea Fabbri
- Unit of Endocrinology and Metabolic Diseases, Department of Systems Medicine, CTO A. Alesini Hospital, ASL Roma 2, University Tor Vergata, Via San Nemesio, 21, 00145, Rome, Italy.
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57
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Ponandai-Srinivasan S, Lalitkumar PG, Garcia L, Varghese SJ, Carlson JW, Gemzell-Danielsson K, Floter Radestad A. Mifepristone mediates anti-proliferative effect on ovarian mesenchymal stem/stromal cells from female BRCA 1-/2- carriers. Acta Obstet Gynecol Scand 2018; 98:250-261. [PMID: 30325501 DOI: 10.1111/aogs.13485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 10/03/2018] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Women with hereditary mutation in breast cancer-associated genes (BRCA1-/2- ) have a higher lifetime risk of developing ovarian cancer. Here, we aimed to investigate the effect of mifepristone, a selective progesterone receptor modulator of ovarian mesenchymal stem/stromal cells (MSC) from BRCA1-/2- carriers. MATERIAL AND METHODS Ovarian BRCA1-/2- MSC were positively selected using the markers CD90, CD73 and CD105 from nine healthy women. The effect of dose response and combination treatment with mifepristone and analogs of progesterone- or glucocorticoid-receptors were investigated on BRCA1-/2- MSC in vitro using a panel of markers for proliferation (ki67, BrdU, CDK2, p21CIP ), apoptosis (BAX, BCL2, CASPASE3), tumor suppression (TP53, PTEN) and cell survival (PI3KCA, MAPK3, mTOR). RESULTS The dose response with mifepristone treatment suggested an optimal effect with 10 μm mifepristone, exhibiting >90% viability and significantly reducing growth signaling markers (TP53 and MAPK3). Furthermore, combined treatment with progesterone plus mifepristone (PG+MIFE) gave an enhanced anti-proliferative effect in comparison with hydrocortisone plus mifepristone (HC+MIFE) by significantly reducing markers of proliferation (BrdU+ and Ki67 expression) and tumor suppressors (PTEN, TP53), and increasing the percentage of pro-apoptotic cells. Consequently, accumulation of p21CIP together with reduced levels of CDK2 confirms growth inhibition by reversibly arresting cell-cycle progression at the G1-S phase, not by inducing apoptosis. CONCLUSIONS Our study showed an anti-proliferative effect on ovarian BRCA1-/2- MSC on in vitro combined treatment with mifepristone and progesterone. These findings suggest that mifepristone or other selective progesterone receptor modulators could be developed as a preventive treatment and postpone early use of prophylactic salpingo-oophorectomy as well as reduce the risk of ovarian cancer.
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Affiliation(s)
- Sakthivignesh Ponandai-Srinivasan
- Division of Obstetrics and Gynecology, Department of Women's and Children's Health, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Parameswaran G Lalitkumar
- Division of Obstetrics and Gynecology, Department of Women's and Children's Health, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Laura Garcia
- Division of Obstetrics and Gynecology, Department of Women's and Children's Health, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Suby Jo Varghese
- Division of Obstetrics and Gynecology, Department of Women's and Children's Health, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Joseph W Carlson
- Division of Pathology and Cytology, Department of Oncology and Pathology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Kristina Gemzell-Danielsson
- Division of Obstetrics and Gynecology, Department of Women's and Children's Health, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Angelique Floter Radestad
- Division of Obstetrics and Gynecology, Department of Women's and Children's Health, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
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58
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Davaadelger B, Murphy AR, Clare SE, Lee O, Khan SA, Kim JJ. Mechanism of Telapristone Acetate (CDB4124) on Progesterone Receptor Action in Breast Cancer Cells. Endocrinology 2018; 159:3581-3595. [PMID: 30203004 PMCID: PMC6157418 DOI: 10.1210/en.2018-00559] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 08/30/2018] [Indexed: 12/12/2022]
Abstract
Progesterone is a steroid hormone that plays an important role in the breast. Progesterone exerts its action through binding to progesterone receptor (PR), a transcription factor. Deregulation of the progesterone signaling pathway is implicated in the formation, development, and progression of breast cancer. Next-generation selective progesterone receptor modulators (SPRMs) have potent antiprogestin activity and are selective for PR, reducing the off-target effects on other nuclear receptors. To date, there is limited information on how the newer generation of SPRMs, specifically telapristone acetate (TPA), affect PR function at the molecular level. In this study, T47D breast cancer cells were used to investigate the molecular mechanism by which TPA antagonizes PR action. Global profiling of the PR cistrome and interactome was done with chromatin immunoprecipitation sequencing (ChIP-seq) and rapid immunoprecipitation mass spectrometry. Validation studies were done on key genes and interactions. Our results demonstrate that treatment with the progestin (R5020) alone resulted in robust PR recruitment to the chromatin, and addition of TPA reduced PR recruitment globally. TPA significantly changed coregulator recruitment to PR compared with R5020. Upon conservative analysis, three proteins (TRPS1, LASP1, and AP1G1) were identified in the R5020+TPA-treated group. Silencing TRPS1 with small interfering RNA increased PR occupancy to the known PR regulatory regions and attenuated the inhibition of gene expression after TPA treatment. TRPS1 silencing alleviated the inhibition of proliferation by TPA. In conclusion, TPA decreases PR occupancy on chromatin and recruits coregulators such as TRPS1 to the PR complex, thereby regulating PR target gene expression and associated cellular responses.
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Affiliation(s)
- Batzaya Davaadelger
- Division of Reproductive Science in Medicine, Department of Obstetrics and Gynecology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Alina R Murphy
- Division of Reproductive Science in Medicine, Department of Obstetrics and Gynecology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Susan E Clare
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Oukseub Lee
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Seema A Khan
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - J Julie Kim
- Division of Reproductive Science in Medicine, Department of Obstetrics and Gynecology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- Correspondence: J. Julie Kim, PhD, 303 East Superior Street, Lurie 4-117, Chicago, Illinois 60611. E-mail:
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59
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Lamb CA, Fabris VT, Jacobsen B, Molinolo AA, Lanari C. Biological and clinical impact of imbalanced progesterone receptor isoform ratios in breast cancer. Endocr Relat Cancer 2018; 25:ERC-18-0179. [PMID: 29991638 DOI: 10.1530/erc-18-0179] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 07/04/2018] [Accepted: 07/09/2018] [Indexed: 12/17/2022]
Abstract
There is a consensus that progestins and thus their cognate receptor molecules, the progesterone receptors (PR), are essential in the development of the adult mammary gland and regulators of proliferation and lactation. However, a role for natural progestins in breast carcinogenesis remains poorly understood. A hint to that possible role came from studies in which the synthetic progestin medroxyprogesterone acetate was associated with an increased breast cancer risk in women under hormone replacement therapy. However, progestins have been also used for breast cancer treatment and to inhibit the growth of several experimental breast cancer models. More recently, PR have been shown to be regulators of estrogen receptor signaling. With all this information, the question is how can we target PR, and if so, which patients may benefit from such an approach? PR are not single unique molecules. Two main PR isoforms have been characterized, PRA and PRB, that exert different functions and the relative abundance of one isoform respect to the other determines the response of PR agonists and antagonists. Immunohistochemistry with standard antibodies against PR do not discriminate between isoforms. In this review, we summarize the current knowledge on the expression of both PR isoforms in mammary glands, in experimental models of breast cancer and in breast cancer patients, to better understand how the PRA/PRB ratio can be exploited therapeutically to design personalized therapeutic strategies.
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Affiliation(s)
- Caroline A Lamb
- C Lamb, Laboratorio de Carcinogénesis Hormonal, Instituto de Biología y Medicina Experimental, Buenos Aires, Argentina
| | - Victoria T Fabris
- V Fabris, Laboratorio de Carcinogénesis Hormonal, Instituto de Biología y Medicina Experimental, Buenos Aires, Argentina
| | - Britta Jacobsen
- B Jacobsen, Department of Pathology, University of Colorado at Denver - Anschutz Medical Campus, Aurora, United States
| | - Alfredo A Molinolo
- A Molinolo, Biorepository and Tissue Technology Shared Resource, University of California San Diego Moores Cancer Center, La Jolla, United States
| | - Claudia Lanari
- C Lanari, Laboratorio de Carcinogénesis Hormonal, Instituto de Biología y Medicina Experimental, Buenos Aires, Argentina
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60
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van de Ven M, Liu X, van der Burg E, Klarenbeek S, Alexi X, Zwart W, Dijcks F, Bouwman P, Jonkers J. BRCA1-associated mammary tumorigenesis is dependent on estrogen rather than progesterone signaling. J Pathol 2018; 246:41-53. [PMID: 29877575 DOI: 10.1002/path.5105] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 05/01/2018] [Accepted: 05/25/2018] [Indexed: 12/16/2022]
Abstract
Hereditary breast cancers in BRCA1 mutation carriers are mostly estrogen receptor α (ERα)-negative and progesterone receptor (PR)-negative; however, hormone depletion via bilateral oophorectomy does result in a marked reduction in breast cancer risk, suggesting that BRCA1-associated breast tumorigenesis is dependent on hormone signaling. We used geneticaly engineered mouse models to determine the individual influences of ERα and PR signaling on the development of BRCA1-deficient breast cancer. In line with the human data, BRCA1-deficient mouse mammary tumors are ERα-negative, and bilateral ovariectomy leads to abrogation of mammary tumor development. Hormonal replacement experiments in ovariectomized mice showed that BRCA1-deficient mammary tumor formation is promoted by estrogen but not by progesterone. In line with these data, mammary tumorigenesis was significantly delayed by the selective ERα downregulator fulvestrant, but not by the selective PR antagonist Org33628. Together, our results illustrate that BRCA1-associated tumorigenesis is dependent on estrogen signaling rather than on progesterone signaling, and call into question the utility of PR antagonists as a tumor prevention strategy for BRCA1 mutation carriers. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Marieke van de Ven
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Xiaoling Liu
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Eline van der Burg
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Sjoerd Klarenbeek
- Experimental Animal Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Xanthippi Alexi
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Wilbert Zwart
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Fred Dijcks
- Synthon Biopharmaceuticals B.V, Nijmegen, The Netherlands
| | - Peter Bouwman
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Jos Jonkers
- Division of Molecular Pathology, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
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61
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Moran O, Zaman T, Eisen A, Demsky R, Blackmore K, Knight JA, Elser C, Ginsburg O, Zbuk K, Yaffe M, Narod SA, Salmena L, Kotsopoulos J. Serum osteoprotegerin levels and mammographic density among high-risk women. Cancer Causes Control 2018; 29:507-517. [PMID: 29679262 DOI: 10.1007/s10552-018-1035-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 04/18/2018] [Indexed: 01/17/2023]
Abstract
PURPOSE Mammographic density is a risk factor for breast cancer but the mechanism behind this association is unclear. The receptor activator of nuclear factor κB (RANK)/RANK ligand (RANKL) pathway has been implicated in the development of breast cancer. Given the role of RANK signaling in mammary epithelial cell proliferation, we hypothesized this pathway may also be associated with mammographic density. Osteoprotegerin (OPG), a decoy receptor for RANKL, is known to inhibit RANK signaling. Thus, it is of interest to evaluate whether OPG levels modify breast cancer risk through mammographic density. METHODS We quantified serum OPG levels in 57 premenopausal and 43 postmenopausal women using an enzyme-linked immunosorbent assay (ELISA). Cumulus was used to measure percent density, dense area, and non-dense area for each mammographic image. Subjects were classified into high versus low OPG levels based on the median serum OPG level in the entire cohort (115.1 pg/mL). Multivariate models were used to assess the relationship between serum OPG levels and the measures of mammographic density. RESULTS Serum OPG levels were not associated with mammographic density among premenopausal women (P ≥ 0.42). Among postmenopausal women, those with low serum OPG levels had higher mean percent mammographic density (20.9% vs. 13.7%; P = 0.04) and mean dense area (23.4 cm2 vs. 15.2 cm2; P = 0.02) compared to those with high serum OPG levels after covariate adjustment. CONCLUSIONS These findings suggest that low OPG levels may be associated with high mammographic density, particularly in postmenopausal women. Targeting RANK signaling may represent a plausible, non-surgical prevention option for high-risk women with high mammographic density, especially those with low circulating OPG levels.
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Affiliation(s)
- Olivia Moran
- Women's College Research Institute, Women's College Hospital, 76 Grenville St., 6th Floor, Toronto, ON, M5S 1B2, Canada.,Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada
| | - Tasnim Zaman
- Women's College Research Institute, Women's College Hospital, 76 Grenville St., 6th Floor, Toronto, ON, M5S 1B2, Canada.,Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Andrea Eisen
- Toronto-Sunnybrook Regional Cancer Center, Toronto, ON, Canada
| | - Rochelle Demsky
- Division of Gynecologic Oncology, Princess Margaret Hospital, University Health Network, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | | | - Julia A Knight
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Christine Elser
- Division of Medical Oncology and Hematology, Department of Medicine, Mount Sinai Hospital and The Princess Margaret Cancer Center, University of Toronto, Toronto, ON, Canada
| | - Ophira Ginsburg
- Laura and Isaac Perlmutter Cancer Centre, NYU Langone Medical Center, NYU School of Medicine, New York, NY, USA
| | - Kevin Zbuk
- Department of Oncology, McMaster University, Hamilton, ON, Canada
| | - Martin Yaffe
- Department of Medical Biophysics, Sunnybrook Research Institute, University of Toronto, Toronto, ON, Canada
| | - Steven A Narod
- Women's College Research Institute, Women's College Hospital, 76 Grenville St., 6th Floor, Toronto, ON, M5S 1B2, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Leonardo Salmena
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.,Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Joanne Kotsopoulos
- Women's College Research Institute, Women's College Hospital, 76 Grenville St., 6th Floor, Toronto, ON, M5S 1B2, Canada. .,Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada. .,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
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62
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Evans DG, Howell SJ, Howell A. Personalized prevention in high risk individuals: Managing hormones and beyond. Breast 2018; 39:139-147. [PMID: 29610032 DOI: 10.1016/j.breast.2018.03.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/17/2018] [Accepted: 03/24/2018] [Indexed: 12/01/2022] Open
Abstract
Increasing numbers of women are being identified at 'high-risk' of breast cancer, defined by The National Institute of Health and Care Excellence (NICE) as a 10-year risk of ≥8%. Classically women have been so identified through family history based risk algorithms or genetic testing of high-risk genes. Recent research has shown that assessment of mammographic density and single nucleotide polymorphisms (SNPs), when combined with established risk factors, trebles the number of women reaching the high risk threshold. The options for risk reduction in such women include endocrine chemoprevention with the selective estrogen receptor modulators tamoxifen and raloxifene or the aromatase inhibitors anastrozole or exemestane. NICE recommends offering anastrozole to postmenopausal women at high-risk of breast cancer as cost effectiveness analysis showed this to be cost saving to the National Health Service. Overall uptake to chemoprevention has been disappointingly low but this may improve with the improved efficacy of aromatase inhibitors, particularly the lack of toxicity to the endometrium and thrombogenic risks. Novel approaches to chemoprevention under investigation include lower dose and topical tamoxifen, denosumab, anti-progestins and metformin. Although oophorectomy is usually only recommended to women at increased risk of ovarian cancer it has been shown in numerous studies to reduce breast cancer risks in the general population and in those with mutations in BRCA1/2. However, recent evidence from studies that have confined analysis to true prospective follow up have cast doubt on the efficacy of oophorectomy to reduce breast cancer risk in BRCA1 mutation carriers, at least in the short-term.
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Affiliation(s)
- D Gareth Evans
- Manchester Centre for Genomic Medicine, Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; Prevent Breast Cancer and Nightingale Breast Screening Centre, Wythenshawe Hospital Manchester Universities Foundation Trust, Manchester, UK; Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; The Christie NHS Foundation Trust, Manchester, UK; Manchester Centre for Genomic Medicine, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK; Manchester Breast Centre, Manchester Cancer Research Centre, University of Manchester, Manchester, UK.
| | - Sacha J Howell
- Prevent Breast Cancer and Nightingale Breast Screening Centre, Wythenshawe Hospital Manchester Universities Foundation Trust, Manchester, UK; Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; The Christie NHS Foundation Trust, Manchester, UK; Manchester Breast Centre, Manchester Cancer Research Centre, University of Manchester, Manchester, UK
| | - Anthony Howell
- Prevent Breast Cancer and Nightingale Breast Screening Centre, Wythenshawe Hospital Manchester Universities Foundation Trust, Manchester, UK; Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; The Christie NHS Foundation Trust, Manchester, UK; Manchester Breast Centre, Manchester Cancer Research Centre, University of Manchester, Manchester, UK
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63
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Alferez DG, Simões BM, Howell SJ, Clarke RB. The Role of Steroid Hormones in Breast and Effects on Cancer Stem Cells. CURRENT STEM CELL REPORTS 2018; 4:81-94. [PMID: 29600163 PMCID: PMC5866269 DOI: 10.1007/s40778-018-0114-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Purpose of Review This review will discuss how the steroid hormones, estrogen and progesterone, as well as treatments that target steroid receptors, can regulate cancer stem cell (CSC) activity. The CSC theory proposes a hierarchical organization in tumors where at its apex lies a subpopulation of cancer cells endowed with self-renewal and differentiation capacity. Recent Findings In breast cancer (BC), CSCs have been suggested to play a key role in tumor maintenance, disease progression, and the formation of metastases. In preclinical models of BC, only a few CSCs are required sustain tumor re-growth, especially after conventional anti-endocrine treatments. CSCs include therapy-resistant clones that survive standard of care treatments like chemotherapy, irradiation, and hormonal therapy. Summary The relevance of hormones for both normal mammary gland and BC development is well described, but it was only recently that the activities of hormones on CSCs have been investigated, opening new directions for future BC treatments and CSCs.
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Affiliation(s)
- Denis G. Alferez
- Breast Biology Group, Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine, and Health, Manchester Cancer Research Centre, Wilmslow Road, Manchester, M20 4GJ UK
| | - Bruno M. Simões
- Breast Biology Group, Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine, and Health, Manchester Cancer Research Centre, Wilmslow Road, Manchester, M20 4GJ UK
| | - Sacha J. Howell
- Breast Biology Group, Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine, and Health, Manchester Cancer Research Centre, Wilmslow Road, Manchester, M20 4GJ UK
- Department of Medical Oncology, The University of Manchester, The Christie NHS Foundation Trust, Manchester, M20 4BX UK
| | - Robert B. Clarke
- Breast Biology Group, Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine, and Health, Manchester Cancer Research Centre, Wilmslow Road, Manchester, M20 4GJ UK
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64
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Odén L, Akbari M, Zaman T, Singer CF, Sun P, Narod SA, Salmena L, Kotsopoulos J. Plasma osteoprotegerin and breast cancer risk in BRCA1 and BRCA2 mutation carriers. Oncotarget 2018; 7:86687-86694. [PMID: 27893411 PMCID: PMC5349945 DOI: 10.18632/oncotarget.13417] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 11/09/2016] [Indexed: 01/08/2023] Open
Abstract
Emerging evidence suggests a role of receptor activator of nuclear factor κB (RANK)/RANK ligand (RANKL) signaling in breast cancer development. Lower osteoprotegerin (OPG) levels, the endogenous decoy receptor for RANKL which competes with RANK for binding of RANKL, has been reported among BRCA mutation carriers. Whether low OPG levels contribute to the high breast cancer risk in this population is unknown. OPG concentrations were measured in plasma of 206 cancer-free BRCA mutation carriers using an enzyme-linked immunosorbent assay. Subjects were categorized as high vs. low based on the median of the entire cohort (95 ng/mL) and followed for a new diagnosis of breast cancer. Cumulative incidence by baseline plasma OPG concentration was estimated using Kaplan-Meier survival analysis. Cox proportional hazards models were used to estimate the adjusted hazard ratios for the association between plasma OPG and breast cancer risk. Over a mean follow-up period of 6.5 years (range 0.1–18.8 years), 18 incident breast cancer cases were observed. After ten years of follow-up, the cumulative incidence of breast cancer among women with low OPG was 21%, compared to 9% among women with high OPG (P-log rank = 0.046). After multivariate adjustment, women with high plasma OPG had a significantly decreased risk of developing breast cancer, compared to women with low OPG (HR = 0.25; 95%CI 0.08–0.78; P = 0.02). These data suggest that low OPG levels are associated with an increased risk of BRCA-associated breast cancer. Targeting RANK signalling may represent a plausible, non-surgical prevention option for BRCA mutation carriers.
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Affiliation(s)
- Lovisa Odén
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada, M5S 1B2.,Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Mohammad Akbari
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada, M5S 1B2.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada, M5T 3M7
| | - Tasnim Zaman
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada, M5S 1B2.,Department of Pharmacology and Toxicology, University of Toronto, 1 King's College Circle Toronto, ON, Canada, M5S 1A8
| | - Christian F Singer
- Department of Obstetrics and Gynecology and Comprehensive Cancer Center, Medical University of Vienna, Spitalgasse 23, 1090 Wien, Vienna, Austria
| | - Ping Sun
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada, M5S 1B2
| | - Steven A Narod
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada, M5S 1B2.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada, M5T 3M7
| | - Leonardo Salmena
- Department of Pharmacology and Toxicology, University of Toronto, 1 King's College Circle Toronto, ON, Canada, M5S 1A8.,Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada, M5G 2M9
| | - Joanne Kotsopoulos
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada, M5S 1B2.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada, M5T 3M7
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65
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Proliferation and ovarian hormone signaling are impaired in normal breast tissues from women with BRCA1 mutations: benefit of a progesterone receptor modulator treatment as a breast cancer preventive strategy in women with inherited BRCA1 mutations. Oncotarget 2018; 7:45317-45330. [PMID: 27246982 PMCID: PMC5216725 DOI: 10.18632/oncotarget.9638] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/09/2016] [Indexed: 12/25/2022] Open
Abstract
Women with inherited BRCA1 mutations have an elevated risk (40-80%) for developing breast and ovarian cancers. Reproductive history has been reported to alter this risk, suggesting a relationship between ovarian hormone signaling and BRCA1-related tumor development. BRCA1 interactions with estrogen receptor (ER) and progesterone receptor (PR) signaling were previously described in human breast cancer cell lines and mouse models. However, few studies have examined the effect of ovarian hormone regulation in normal human breast tissues bearing a heterozygous BRCA1 mutation. This study compares the proliferation level (Ki67) and the expression of ER, PR, and of the PR target gene, fatty acid synthase (FASN), in histologically normal breast tissues from women with BRCA1 mutations (BRCA1+/mut, n=23) or without BRCA1 mutations (BRCA1+/+, n=28). BRCA1+/mut tissues showed an increased proliferation and impaired hormone receptor expression with a marked loss of the PR isoform, PR-B. Responses to estradiol and progesterone treatments in BRCA1+/mut and BRCA1+/+ breast tissues were studied in a mouse xenograft model, and showed that PR and FASN expression were deregulated in BRCA1+/mut breast tissues. Progesterone added to estradiol treatment increased the proliferation in a subset of BRCA1+/mut breast tissues. The PR inhibitor, ulipristal acetate (UPA), was able to reverse this aberrant progesterone-induced proliferation. This study suggests that a subset of women with BRCA1 mutations could be candidates for a UPA treatment as a preventive breast cancer strategy.
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66
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Rao S, Cronin SJF, Sigl V, Penninger JM. RANKL and RANK: From Mammalian Physiology to Cancer Treatment. Trends Cell Biol 2017; 28:213-223. [PMID: 29241686 DOI: 10.1016/j.tcb.2017.11.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 11/09/2017] [Accepted: 11/10/2017] [Indexed: 12/24/2022]
Abstract
The tumor necrosis factor (TNF) receptor RANK (TNFRSF11A) and its ligand RANKL (TNFSF11) regulate osteoclast development and bone metabolism. They also control stem cell expansion and proliferation of mammary epithelial cells via the sex hormone progesterone. As such, RANKL and RANK have been implicated in the onset of hormone-induced breast cancer. Recently, RANK/RANKL were identified as crucial regulators for BRCA1 mutation-driven breast cancer. Current prevention strategies for BRCA1 mutation carriers are associated with wide-ranging risks; therefore, the search for alternative, non-invasive strategies is of paramount importance. We summarize here the functions of the RANKL/RANK pathway in mammalian physiology and focus on its recently uncovered role in breast cancer. We propose that anti-RANKL therapy should be pursued as a preventative strategy for breast cancer.
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Affiliation(s)
- Shuan Rao
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Dr. Bohr Gasse 3, Vienna, Austria; These authors contributed equally to this work
| | - Shane J F Cronin
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Dr. Bohr Gasse 3, Vienna, Austria; These authors contributed equally to this work
| | - Verena Sigl
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Dr. Bohr Gasse 3, Vienna, Austria
| | - Josef M Penninger
- Institute of Molecular Biotechnology of the Austrian Academy of Science (IMBA), Vienna Biocenter (VBC), Dr. Bohr Gasse 3, Vienna, Austria.
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67
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Sigl V, Jones LP, Penninger JM. RANKL/RANK: from bone loss to the prevention of breast cancer. Open Biol 2017; 6:rsob.160230. [PMID: 27881737 PMCID: PMC5133443 DOI: 10.1098/rsob.160230] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 10/21/2016] [Indexed: 12/13/2022] Open
Abstract
RANK and RANKL, a receptor ligand pair belonging to the tumour necrosis factor family, are the critical regulators of osteoclast development and bone metabolism. Besides their essential function in bone, RANK and RANKL have also been identified as the key factors for the formation of a lactating mammary gland in pregnancy. Mechanistically, RANK and RANKL link the sex hormone progesterone with stem cell expansion and proliferation of mammary epithelial cells. Based on their normal physiology, RANKL/RANK control the onset of hormone-induced breast cancer through the expansion of mammary progenitor cells. Recently, we and others were able to show that RANK and RANKL are also critical regulators of BRCA1-mutation-driven breast cancer. Currently, the preventive strategy for BRCA1-mutation carriers includes preventive mastectomy, associated with wide-ranging risks and psychosocial effects. The search for an alternative non-invasive prevention strategy is therefore of paramount importance. As our work strongly implicates RANK and RANKL as key molecules involved in the initiation of BRCA1-associated breast cancer, we propose that anti-RANKL therapy could be a feasible preventive strategy for women carrying BRCA1 mutations, and by extension to other women with high risk of breast cancer.
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Affiliation(s)
- Verena Sigl
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Dr Bohrgasse 3, 1030 Vienna, Austria
| | - Laundette P Jones
- School of Medicine, Department of Pharmacology, University of Maryland, Baltimore, MD 21201, USA
| | - Josef M Penninger
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Dr Bohrgasse 3, 1030 Vienna, Austria
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68
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Sau A, Cabrita MA, Pratt MAC. NF-κB at the Crossroads of Normal Mammary Gland Biology and the Pathogenesis and Prevention of BRCA1-Mutated Breast Cancer. Cancer Prev Res (Phila) 2017; 11:69-80. [PMID: 29101208 DOI: 10.1158/1940-6207.capr-17-0225] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 10/03/2017] [Accepted: 10/27/2017] [Indexed: 11/16/2022]
Abstract
Recent studies have shown that progesterone receptor (PR)-expressing cells respond to progesterone in part through the induction of the receptor activator of NF-κB ligand (RANKL), which acts in a paracrine manner to induce expansion of a RANK-expressing luminal progenitor cell population. The RANK+ population in human breast tissue from carriers of BRCA1 mutations (BRCA1mut/+) as well as the luminal progenitor population in Brca1-deficient mouse mammary glands is abnormally amplified. Remarkably, mouse Brca1+/- and human BRCA1mut/+ progenitor cells are able to form colonies in vitro in the absence of progesterone, demonstrating a hormone-independent proliferative capacity. Our research has demonstrated that proliferation in BRCA1-deficient cells results in a DNA damage response (DDR) that activates a persistent NF-κB signal, which supplants progesterone/RANKL signaling for an extended time period. Thus, the transcriptional targets normally activated by RANKL that promote a proliferative response in luminal progenitors can contribute to the susceptibility of mammary epithelial cells to BRCA1-mutated breast cancers as a consequence of DDR-induced NF-κB. Together, these latest findings mark substantial progress in uncovering the mechanisms driving high rates of breast tumorigenesis in BRCA1 mutation carriers and ultimately reveal possibilities for nonsurgical prevention strategies. Cancer Prev Res; 11(2); 69-80. ©2017 AACR.
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Affiliation(s)
- Andrea Sau
- University of Ottawa, Ottawa, Ontario, Canada
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69
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Liede A, Mansfield CA, Metcalfe KA, Price MA, Snyder C, Lynch HT, Friedman S, Amelio J, Posner J, Narod SA, Lindeman GJ, Evans DG. Preferences for breast cancer risk reduction among BRCA1/BRCA2 mutation carriers: a discrete-choice experiment. Breast Cancer Res Treat 2017. [PMID: 28624978 PMCID: PMC5543193 DOI: 10.1007/s10549-017-4332-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Purpose Unaffected women who carry BRCA1 or BRCA2 mutations face difficult choices about reducing their breast cancer risk. Understanding their treatment preferences could help us improve patient counseling and inform drug trials. The objective was to explore preferences for various risk-reducing options among women with germline BRCA1/2 mutations using a discrete-choice experiment survey and to compare expressed preferences with actual behaviors. Methods A discrete-choice experiment survey was designed wherein women choose between hypothetical treatments to reduce breast cancer risk. The hypothetical treatments were characterized by the extent of breast cancer risk reduction, treatment duration, impact on fertility, hormone levels, risk of uterine cancer, and ease and mode of administration. Data were analyzed using a random-parameters logit model. Women were also asked to express their preference between surgical and chemoprevention options and to report on their actual risk-reduction actions. Women aged 25–55 years with germline BRCA1/2 mutations who were unaffected with breast or ovarian cancer were recruited through research registries at five clinics and a patient advocacy group. Results Between January 2015 and March 2016, 622 women completed the survey. Breast cancer risk reduction was the most important consideration expressed, followed by maintaining fertility. Among the subset of women who wished to have children in future, the ability to maintain fertility was the most important factor, followed by the extent of risk reduction. Many more women said they would take a chemoprevention drug than had actually taken chemoprevention. Conclusions Women with BRCA1/2 mutations indicated strong preferences for breast cancer risk reduction and maintaining fertility. The expressed desire to have a safe chemoprevention drug available to them was not met by current chemoprevention options. Electronic supplementary material The online version of this article (doi:10.1007/s10549-017-4332-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Carol A Mansfield
- RTI Health Solutions, 200 Park Offices Drive, Research Triangle Park, NC, 27709, USA.
| | - Kelly A Metcalfe
- Women's College Hospital, University of Toronto, Toronto, Canada
| | - Melanie A Price
- Centre for Medical Psychology and Evidence-based Decision-making (CeMPED), School of Psychology, The University of Sydney, Sydney, Australia
| | | | | | | | - Sue Friedman
- Facing Our Risk of Cancer Empowered (FORCE) Advocacy Organization, Tampa, FL, USA
| | | | - Joshua Posner
- RTI Health Solutions, 200 Park Offices Drive, Research Triangle Park, NC, 27709, USA
| | - Steven A Narod
- Women's College Hospital, University of Toronto, Toronto, Canada
| | - Geoffrey J Lindeman
- The Royal Melbourne Hospital, Parkville, Australia.,Peter MacCallum Cancer Centre, Melbourne, Australia.,The Walter & Eliza Hall Institute of Medical Research, Parkville, Australia
| | - D Gareth Evans
- Manchester Centre for Genomic Medicine, University of Manchester, Manchester, UK
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70
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Havas KM, Milchevskaya V, Radic K, Alladin A, Kafkia E, Garcia M, Stolte J, Klaus B, Rotmensz N, Gibson TJ, Burwinkel B, Schneeweiss A, Pruneri G, Patil KR, Sotillo R, Jechlinger M. Metabolic shifts in residual breast cancer drive tumor recurrence. J Clin Invest 2017; 127:2091-2105. [PMID: 28504653 DOI: 10.1172/jci89914] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 03/16/2017] [Indexed: 12/22/2022] Open
Abstract
Tumor recurrence is the leading cause of breast cancer-related death. Recurrences are largely driven by cancer cells that survive therapeutic intervention. This poorly understood population is referred to as minimal residual disease. Here, using mouse models that faithfully recapitulate human disease together with organoid cultures, we have demonstrated that residual cells acquire a transcriptionally distinct state from normal epithelium and primary tumors. Gene expression changes and functional characterization revealed altered lipid metabolism and elevated ROS as hallmarks of the cells that survive tumor regression. These residual cells exhibited increased oxidative DNA damage, potentiating the acquisition of somatic mutations during hormonal-induced expansion of the mammary cell population. Inhibition of either cellular fatty acid synthesis or fatty acid transport into mitochondria reduced cellular ROS levels and DNA damage, linking these features to lipid metabolism. Direct perturbation of these hallmarks in vivo, either by scavenging ROS or by halting the cyclic mammary cell population expansion, attenuated tumor recurrence. Finally, these observations were mirrored in transcriptomic and histological signatures of residual cancer cells from neoadjuvant-treated breast cancer patients. These results highlight the potential of lipid metabolism and ROS as therapeutic targets for reducing tumor recurrence in breast cancer patients.
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Affiliation(s)
- Kristina M Havas
- EMBL Monterotondo, Adriano Buzzati-Traverso Campus, Monterotondo, Italy.,Istituto Firc di Oncologia Molecolare (IFOM) the Italian Foundation for Cancer Research (FIRC) Institute of Molecular Oncology, Milan, Italy
| | | | | | | | | | | | - Jens Stolte
- EMBL Monterotondo, Adriano Buzzati-Traverso Campus, Monterotondo, Italy
| | | | - Nicole Rotmensz
- Division of Epidemiology and Biostatistics European Institute of Oncology, Milan, Italy
| | | | - Barbara Burwinkel
- Molecular Biology of Breast Cancer, University Women's Clinic, Heidelberg, Germany
| | - Andreas Schneeweiss
- Gynecologic Oncology, National Center for Tumor Diseases, University of Heidelberg, Heidelberg, Germany
| | - Giancarlo Pruneri
- Department of Pathology, Biobank for Translational Medicine Unit, European Institute of Oncology, Milan and University of Milan, School of Medicine, Milan, Italy
| | | | - Rocio Sotillo
- EMBL Monterotondo, Adriano Buzzati-Traverso Campus, Monterotondo, Italy.,Division of Molecular Thoracic Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), Heidelberg, Germany
| | - Martin Jechlinger
- EMBL Monterotondo, Adriano Buzzati-Traverso Campus, Monterotondo, Italy.,EMBL Heidelberg, Heidelberg, Germany
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71
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Abstract
There is an abundance of accumulating data strongly suggesting there is a key role for the progesterone receptor in the molecular events effecting the growth or containment of a variety of cancers. This knowledge should lead to novel new strategies to combat various cancers, including drugs classified as progesterone receptor modulators or monoclonal antibodies against some of the key proteins needed for cancer proliferation by suppressing immune surveillance. Areas covered: The role of the classic nuclear receptor and molecular events needed for proliferation are reviewed including cancers of the breast, endometrium, prostate, thyroid, and leiomyomas and leiomyosarcoma. The potential role of non-genomic membrane progesterone receptors is reviewed. The prognostic role of the presence of progesterone receptors is also discussed. Over 1000 research publications were read after conducting a PubMed search. Expert commentary: Discussion is made about a unique immunomodulatory protein called the progesterone induced blocking factor (PIBF). The role of this protein, that is unique to rapidly growing cells, may hold a key to how the cancer cells escape immune surveillance. Thus, techniques to suppress the intracytoplasmic isoforms of PIBF may play a significant role in the fight against all cancers, not just the ones with the classic nuclear progesterone receptors.
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Affiliation(s)
- Jerome H Check
- a Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility , Cooper Medical School of Rowan University , Camden , New Jersey , United States
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72
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Nolan E, Vaillant F, Visvader JE, Lindeman GJ. RE: Bilateral Oophorectomy and Breast Cancer Risk in BRCA1 and BRCA2 Mutation Carriers. J Natl Cancer Inst 2017; 109:3105957. [DOI: 10.1093/jnci/djx038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 02/21/2017] [Indexed: 02/04/2023] Open
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73
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Nolan E, Lindeman GJ, Visvader JE. Out-RANKing BRCA1 in Mutation Carriers. Cancer Res 2017; 77:595-600. [PMID: 28104682 DOI: 10.1158/0008-5472.can-16-2025] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/28/2016] [Accepted: 10/08/2016] [Indexed: 11/16/2022]
Abstract
Beyond prophylactic mastectomy, there are currently very few options available to BRCA1 mutation carriers to help reduce their risk of developing breast cancer. An effective prevention therapy therefore remains a pressing area of need. Accumulating evidence points to amplification of the progesterone signaling axis in precancerous tissue from BRCA1 mutation carriers. Given that RANKL is an important paracrine mediator of hormonal signaling in breast tissue, there has been considerable interest in exploring a potential role for this pathway in oncogenesis. Recent findings indicate that the RANK and NF-κB pathways are aberrantly activated in luminal progenitor cells resident in preneoplastic BRCA1mut/+ breast tissue. The augmented proliferation of these cells and their predilection for DNA damage suggest that they are prime cellular targets for basal-like cancers arising in BRCA1 mutation carriers. The end result is a hyperactive pathway, initiated by progesterone and amplified by DNA damage-induced NF-κB signaling, that likely accounts for the susceptibility of BRCA1mut/+ luminal progenitor cells to oncogenesis and tissue specificity. Specific targeting of this progenitor subset has revealed a compelling new prevention strategy for these and possibly other high-risk women. Cancer Res; 77(3); 595-600. ©2017 AACR.
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Affiliation(s)
- Emma Nolan
- Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria, Australia
| | - Geoffrey J Lindeman
- Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Parkville Familial Cancer Centre, Royal Melbourne Hospital and Peter MacCallum Cancer Centre, Parkville, Victoria, Australia.,Department of Medicine, University of Melbourne, Parkville, Victoria, Australia
| | - Jane E Visvader
- Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia. .,Department of Medical Biology, The University of Melbourne, Parkville, Victoria, Australia
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74
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Donnez J, Dolmans MM. Uterine fibroid management: from the present to the future. Hum Reprod Update 2016; 22:665-686. [PMID: 27466209 PMCID: PMC5853598 DOI: 10.1093/humupd/dmw023] [Citation(s) in RCA: 356] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/12/2016] [Accepted: 05/27/2016] [Indexed: 12/24/2022] Open
Abstract
Uterine fibroids (also known as leiomyomas or myomas) are the most common form of benign uterine tumors. Clinical presentations include abnormal bleeding, pelvic masses, pelvic pain, infertility, bulk symptoms and obstetric complications.Almost a third of women with leiomyomas will request treatment due to symptoms. Current management strategies mainly involve surgical interventions, but the choice of treatment is guided by patient's age and desire to preserve fertility or avoid 'radical' surgery such as hysterectomy. The management of uterine fibroids also depends on the number, size and location of the fibroids. Other surgical and non-surgical approaches include myomectomy by hysteroscopy, myomectomy by laparotomy or laparoscopy, uterine artery embolization and interventions performed under radiologic or ultrasound guidance to induce thermal ablation of the uterine fibroids.There are only a few randomized trials comparing various therapies for fibroids. Further investigations are required as there is a lack of concrete evidence of effectiveness and areas of uncertainty surrounding correct management according to symptoms. The economic impact of uterine fibroid management is significant and it is imperative that new treatments be developed to provide alternatives to surgical intervention.There is growing evidence of the crucial role of progesterone pathways in the pathophysiology of uterine fibroids due to the use of selective progesterone receptor modulators (SPRMs) such as ulipristal acetate (UPA). The efficacy of long-term intermittent use of UPA was recently demonstrated by randomized controlled studies.The need for alternatives to surgical intervention is very real, especially for women seeking to preserve their fertility. These options now exist, with SPRMs which are proven to treat fibroid symptoms effectively. Gynecologists now have new tools in their armamentarium, opening up novel strategies for the management of uterine fibroids.
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Affiliation(s)
- Jacques Donnez
- Professor EM, Catholic University of Louvain, Director, Société de Recherche pour l'Infertilité (SRI), 143 Avenue Grandchamp, B-1150 Brussels, Belgium
| | - Marie-Madeleine Dolmans
- Gynecology Department, Cliniques Universitaires St-Luc, Avenue Hippocrate 10, 1200 Brussels, Belgium; Pôle de Gynécologie, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Avenue Mounier 52, bte B1.52.02, 1200 Brussels, Belgium
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75
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Can we prevent BRCA1-associated breast cancer by RANKL inhibition? Breast Cancer Res Treat 2016; 161:11-16. [DOI: 10.1007/s10549-016-4029-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 10/18/2016] [Indexed: 12/24/2022]
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76
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Aspirin, lysine, mifepristone and doxycycline combined can effectively and safely prevent and treat cancer metastasis: prevent seeds from gemmating on soil. Oncotarget 2016; 6:35157-72. [PMID: 26459390 PMCID: PMC4742096 DOI: 10.18632/oncotarget.6038] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 09/14/2015] [Indexed: 12/11/2022] Open
Abstract
Recent scientific advances have increased our understanding of the cancer metastatic complexities and provided further impetus for new combination therapies to prevent cancer metastasis. Here, we demonstrated that a combination (HAMPT) of aspirin, lysine, mifepristone and doxycycline can effectively and safely prevent cancer metastasis. The pharmaceutically-formulated HAMPT inhibited adhesion of cancer cells to either endothelial cells or extracellular matrix via down-regulating cell adhesion molecules ICAM-1 and α4-integrin. HAMPT inhibited the cloak effect by activated platelets on cancer cells, thereby interfering adhesion and invasion of cancer cells to the underlying stroma. At the effective concentration, HAMPT induced cancer cells into dormancy with minor inhibition on cell viability. Four-day pretreatment followed by 30-day oral administration of HAMPT (33.5-134 mg/kg) to the mice inoculated with cancer cells produced significant inhibition on cancer metastasis dose-dependently without marked side effects. Fifty-day rat toxicity study with HAMPT at doses (335-1340 mg/kg) 20-fold higher than its therapeutic dose produced no significant toxicity. Interestingly, the acute toxic death could not be reached at the maximum administrable dose (5 g/kg). This proof-of-concept study provides the first conceptual evidence that cancer metastasis can be controlled by using affordable old drugs to restrain circulating tumor cells from gemmating on the metastatic soil without the need for cytotoxicity.
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77
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Feiteiro J, Mariana M, Verde I, Cairrão E. Genomic and Nongenomic Effects of Mifepristone at the Cardiovascular Level: A Review. Reprod Sci 2016; 24:976-988. [DOI: 10.1177/1933719116671002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Joana Feiteiro
- Centro de Investigação em Ciências da Saúde, University of Beira Interior, Covilhã, Portugal
| | - Melissa Mariana
- Centro de Investigação em Ciências da Saúde, University of Beira Interior, Covilhã, Portugal
| | - Ignacio Verde
- Centro de Investigação em Ciências da Saúde, University of Beira Interior, Covilhã, Portugal
| | - Elisa Cairrão
- Centro de Investigação em Ciências da Saúde, University of Beira Interior, Covilhã, Portugal
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78
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Grimm SL, Hartig SM, Edwards DP. Progesterone Receptor Signaling Mechanisms. J Mol Biol 2016; 428:3831-49. [PMID: 27380738 DOI: 10.1016/j.jmb.2016.06.020] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 06/25/2016] [Accepted: 06/27/2016] [Indexed: 12/27/2022]
Abstract
Progesterone receptor (PR) is a master regulator in female reproductive tissues that controls developmental processes and proliferation and differentiation during the reproductive cycle and pregnancy. PR also plays a role in progression of endocrine-dependent breast cancer. As a member of the nuclear receptor family of ligand-dependent transcription factors, the main action of PR is to regulate networks of target gene expression in response to binding its cognate steroid hormone, progesterone. This paper summarizes recent advances in understanding the structure-function properties of the receptor protein and the tissue/cell-type-specific PR signaling pathways that contribute to the biological actions of progesterone in the normal breast and in breast cancer.
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Affiliation(s)
- Sandra L Grimm
- Department of Molecular and Cellular Biology, Baylor College of Medicine,Houston, TX 77030, USA
| | - Sean M Hartig
- Department of Molecular and Cellular Biology, Baylor College of Medicine,Houston, TX 77030, USA
| | - Dean P Edwards
- Department of Molecular and Cellular Biology, Baylor College of Medicine,Houston, TX 77030, USA.
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79
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Abstract
Robust genetic evidence in mice and humans indicates that RANK signaling plays a major role in mammary carcinogenesis driven by BRCA1/BRCA2 mutations. These findings may inaugurate a new era of breast cancer prevention, changing the life of millions of women worldwide.
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Affiliation(s)
- Lorenzo Galluzzi
- Gustave Roussy Cancer Campus, Villejuif, France
- INSERM, U1138, Paris, France
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France
- Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France
- Université Pierre et Marie Curie/Paris VI, Paris, France
| | - Aitziber Buqué
- Gustave Roussy Cancer Campus, Villejuif, France
- INSERM, U1138, Paris, France
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France
- Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France
- Université Pierre et Marie Curie/Paris VI, Paris, France
| | - Guido Kroemer
- INSERM, U1138, Paris, France
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France
- Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France
- Université Pierre et Marie Curie/Paris VI, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
- Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, Paris, France
- Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden
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80
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Nolan E, Vaillant F, Branstetter D, Pal B, Giner G, Whitehead L, Lok SW, Mann GB, Rohrbach K, Huang LY, Soriano R, Smyth GK, Dougall WC, Visvader JE, Lindeman GJ. RANK ligand as a potential target for breast cancer prevention in BRCA1-mutation carriers. Nat Med 2016; 22:933-9. [PMID: 27322743 DOI: 10.1038/nm.4118] [Citation(s) in RCA: 197] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 05/06/2016] [Indexed: 12/19/2022]
Abstract
Individuals who have mutations in the breast-cancer-susceptibility gene BRCA1 (hereafter referred to as BRCA1-mutation carriers) frequently undergo prophylactic mastectomy to minimize their risk of breast cancer. The identification of an effective prevention therapy therefore remains a 'holy grail' for the field. Precancerous BRCA1(mut/+) tissue harbors an aberrant population of luminal progenitor cells, and deregulated progesterone signaling has been implicated in BRCA1-associated oncogenesis. Coupled with the findings that tumor necrosis factor superfamily member 11 (TNFSF11; also known as RANKL) is a key paracrine effector of progesterone signaling and that RANKL and its receptor TNFRSF11A (also known as RANK) contribute to mammary tumorigenesis, we investigated a role for this pathway in the pre-neoplastic phase of BRCA1-mutation carriers. We identified two subsets of luminal progenitors (RANK(+) and RANK(-)) in histologically normal tissue of BRCA1-mutation carriers and showed that RANK(+) cells are highly proliferative, have grossly aberrant DNA repair and bear a molecular signature similar to that of basal-like breast cancer. These data suggest that RANK(+) and not RANK(-) progenitors are a key target population in these women. Inhibition of RANKL signaling by treatment with denosumab in three-dimensional breast organoids derived from pre-neoplastic BRCA1(mut/+) tissue attenuated progesterone-induced proliferation. Notably, proliferation was markedly reduced in breast biopsies from BRCA1-mutation carriers who were treated with denosumab. Furthermore, inhibition of RANKL in a Brca1-deficient mouse model substantially curtailed mammary tumorigenesis. Taken together, these findings identify a targetable pathway in a putative cell-of-origin population in BRCA1-mutation carriers and implicate RANKL blockade as a promising strategy in the prevention of breast cancer.
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Affiliation(s)
- Emma Nolan
- ACRF Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research (WEHI), Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - François Vaillant
- ACRF Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research (WEHI), Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | | | - Bhupinder Pal
- ACRF Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research (WEHI), Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Göknur Giner
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia.,Bioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Lachlan Whitehead
- Imaging Laboratory, Systems Biology and Personalized Medicine Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Sheau W Lok
- ACRF Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research (WEHI), Parkville, Victoria, Australia.,Familial Cancer Centre, Royal Melbourne Hospital, Parkville, Victoria, Australia.,Department of Medical Oncology, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Gregory B Mann
- The Breast Service, Royal Melbourne Hospital and Royal Women's Hospital, Parkville, Victoria, Australia.,Department of Surgery, University of Melbourne, Parkville, Victoria, Australia
| | | | - Kathy Rohrbach
- Department of Pathology, Amgen Inc., Seattle, Washington, USA
| | - Li-Ya Huang
- Department of Pathology, Amgen Inc., Seattle, Washington, USA
| | - Rosalia Soriano
- Department of Pathology, Amgen Inc., Seattle, Washington, USA
| | - Gordon K Smyth
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Mathematics and Statistics, University of Melbourne, Parkville, Victoria, Australia
| | | | - Jane E Visvader
- ACRF Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research (WEHI), Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Geoffrey J Lindeman
- ACRF Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research (WEHI), Parkville, Victoria, Australia.,Familial Cancer Centre, Royal Melbourne Hospital, Parkville, Victoria, Australia.,Department of Medical Oncology, Royal Melbourne Hospital, Parkville, Victoria, Australia.,Department of Medicine, University of Melbourne, Parkville, Victoria, Australia.,Familial Cancer Centre, Victorian Comprehensive Cancer Centre, Parkville, Victoria, Australia
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81
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Sau A, Lau R, Cabrita MA, Nolan E, Crooks PA, Visvader JE, Pratt MAC. Persistent Activation of NF-κB in BRCA1-Deficient Mammary Progenitors Drives Aberrant Proliferation and Accumulation of DNA Damage. Cell Stem Cell 2016; 19:52-65. [PMID: 27292187 DOI: 10.1016/j.stem.2016.05.003] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 02/20/2016] [Accepted: 05/06/2016] [Indexed: 10/21/2022]
Abstract
Human BRCA1 mutation carriers and BRCA1-deficient mouse mammary glands contain an abnormal population of mammary luminal progenitors that can form 3D colonies in a hormone-independent manner. The intrinsic cellular regulatory defect in these presumptive breast cancer precursors is not known. We have discovered that nuclear factor kappaB (NF-κB) (p52/RelB) is persistently activated in a subset of BRCA1-deficient mammary luminal progenitors. Hormone-independent luminal progenitor colony formation required NF-κB, ataxia telangiectasia-mutated (ATM), and the inhibitor of kappaB kinase, IKKα. Progesterone (P4)-stimulated proliferation resulted in a marked enhancement of DNA damage foci in Brca1(-/-) mouse mammary. In vivo, NF-κB inhibition prevented recovery of Brca1(-/-) hormone-independent colony-forming cells. The majority of human BRCA1(mut/+) mammary glands showed marked lobular expression of nuclear NF-κB. We conclude that the aberrant proliferative capacity of Brca1(-/-) luminal progenitor cells is linked to the replication-associated DNA damage response, where proliferation of mammary progenitors is perpetuated by damage-induced, autologous NF-κB signaling.
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Affiliation(s)
- Andrea Sau
- Breast Cancer Research Laboratory, Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Rosanna Lau
- Breast Cancer Research Laboratory, Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Miguel A Cabrita
- Breast Cancer Research Laboratory, Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Emma Nolan
- Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Peter A Crooks
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Jane E Visvader
- Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - M A Christine Pratt
- Breast Cancer Research Laboratory, Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada.
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82
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Singhal H, Greene ME, Tarulli G, Zarnke AL, Bourgo RJ, Laine M, Chang YF, Ma S, Dembo AG, Raj GV, Hickey TE, Tilley WD, Greene GL. Genomic agonism and phenotypic antagonism between estrogen and progesterone receptors in breast cancer. SCIENCE ADVANCES 2016; 2:e1501924. [PMID: 27386569 PMCID: PMC4928895 DOI: 10.1126/sciadv.1501924] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 05/31/2016] [Indexed: 05/17/2023]
Abstract
The functional role of progesterone receptor (PR) and its impact on estrogen signaling in breast cancer remain controversial. In primary ER(+) (estrogen receptor-positive)/PR(+) human tumors, we report that PR reprograms estrogen signaling as a genomic agonist and a phenotypic antagonist. In isolation, estrogen and progestin act as genomic agonists by regulating the expression of common target genes in similar directions, but at different levels. Similarly, in isolation, progestin is also a weak phenotypic agonist of estrogen action. However, in the presence of both hormones, progestin behaves as a phenotypic estrogen antagonist. PR remodels nucleosomes to noncompetitively redirect ER genomic binding to distal enhancers enriched for BRCA1 binding motifs and sites that link PR and ER/PR complexes. When both hormones are present, progestin modulates estrogen action, such that responsive transcriptomes, cellular processes, and ER/PR recruitment to genomic sites correlate with those observed with PR alone, but not ER alone. Despite this overall correlation, the transcriptome patterns modulated by dual treatment are sufficiently different from individual treatments, such that antagonism of oncogenic processes is both predicted and observed. Combination therapies using the selective PR modulator/antagonist (SPRM) CDB4124 in combination with tamoxifen elicited 70% cytotoxic tumor regression of T47D tumor xenografts, whereas individual therapies inhibited tumor growth without net regression. Our findings demonstrate that PR redirects ER chromatin binding to antagonize estrogen signaling and that SPRMs can potentiate responses to antiestrogens, suggesting that cotargeting of ER and PR in ER(+)/PR(+) breast cancers should be explored.
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Affiliation(s)
- Hari Singhal
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Marianne E. Greene
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Gerard Tarulli
- Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Allison L. Zarnke
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Ryan J. Bourgo
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Muriel Laine
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Ya-Fang Chang
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Shihong Ma
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75080, USA
| | - Anna G. Dembo
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Ganesh V. Raj
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75080, USA
| | - Theresa E. Hickey
- Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Wayne D. Tilley
- Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Geoffrey L. Greene
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
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83
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Sigl V, Owusu-Boaitey K, Joshi PA, Kavirayani A, Wirnsberger G, Novatchkova M, Kozieradzki I, Schramek D, Edokobi N, Hersl J, Sampson A, Odai-Afotey A, Lazaro C, Gonzalez-Suarez E, Pujana MA, Cimba F, Heyn H, Vidal E, Cruickshank J, Berman H, Sarao R, Ticevic M, Uribesalgo I, Tortola L, Rao S, Tan Y, Pfeiler G, Lee EY, Bago-Horvath Z, Kenner L, Popper H, Singer C, Khokha R, Jones LP, Penninger JM. RANKL/RANK control Brca1 mutation- . Cell Res 2016; 26:761-74. [PMID: 27241552 PMCID: PMC5129883 DOI: 10.1038/cr.2016.69] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 12/18/2022] Open
Abstract
Breast cancer is the most common female cancer, affecting approximately one in eight women during their life-time. Besides environmental triggers and hormones, inherited mutations in the breast cancer 1 (BRCA1) or BRCA2 genes markedly increase the risk for the development of breast cancer. Here, using two different mouse models, we show that genetic inactivation of the key osteoclast differentiation factor RANK in the mammary epithelium markedly delayed onset, reduced incidence, and attenuated progression of Brca1;p53 mutation-driven mammary cancer. Long-term pharmacological inhibition of the RANK ligand RANKL in mice abolished the occurrence of Brca1 mutation-driven pre-neoplastic lesions. Mechanistically, genetic inactivation of Rank or RANKL/RANK blockade impaired proliferation and expansion of both murine Brca1;p53 mutant mammary stem cells and mammary progenitors from human BRCA1 mutation carriers. In addition, genome variations within the RANK locus were significantly associated with risk of developing breast cancer in women with BRCA1 mutations. Thus, RANKL/RANK control progenitor cell expansion and tumorigenesis in inherited breast cancer. These results present a viable strategy for the possible prevention of breast cancer in BRCA1 mutant patients.
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Affiliation(s)
- Verena Sigl
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Kwadwo Owusu-Boaitey
- Department of Biological Sciences, University of Maryland-Baltimore County, Baltimore, MD 21250, USA
| | - Purna A Joshi
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada M5G 1L7
| | - Anoop Kavirayani
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Gerald Wirnsberger
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Maria Novatchkova
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Ivona Kozieradzki
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Daniel Schramek
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario, Canada M5G 1X5.,Department of Molecular Genetics, University of Toronto, Ontario, Canada M5S 3E1
| | - Nnamdi Edokobi
- Department of Biological Sciences, University of Maryland-Baltimore County, Baltimore, MD 21250, USA
| | - Jerome Hersl
- Department of Pharmacology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD 21201, USA
| | - Aishia Sampson
- Department of Pharmacology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD 21201, USA
| | - Ashley Odai-Afotey
- Department of Biological Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Conxi Lazaro
- Hereditary Cancer Program, Catalan Institute of Oncology, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Catalonia, Spain
| | - Eva Gonzalez-Suarez
- Cancer Epigenetics and Biology Program, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Catalonia, Spain
| | - Miguel A Pujana
- ProCURE, Catalan Institute of Oncology, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Catalonia, Spain
| | - For Cimba
- Department of Public and Primary Care, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
| | - Holger Heyn
- Cancer Epigenetics and Biology Program, IDIBELL, L'Hospitalet de Llobregat, Barcelona, Catalonia, Spain
| | - Enrique Vidal
- Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, University Pompeu Fabra, Barcelona, Catalonia, Spain
| | - Jennifer Cruickshank
- The Campbell Family Institute for Breast Cancer Research, University Health Network, Toronto, Ontario, Canada M5G 1Z5
| | - Hal Berman
- The Campbell Family Institute for Breast Cancer Research, University Health Network, Toronto, Ontario, Canada M5G 1Z5
| | - Renu Sarao
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Melita Ticevic
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Iris Uribesalgo
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Luigi Tortola
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Shuan Rao
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
| | - Yen Tan
- Departments of Obstetrics and Gynecology and Comprehensive Cancer Center, Medical University of Vienna, Vienna 1090, Austria
| | - Georg Pfeiler
- Departments of Obstetrics and Gynecology and Comprehensive Cancer Center, Medical University of Vienna, Vienna 1090, Austria
| | - Eva Yhp Lee
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, CA 92697, USA
| | - Zsuzsanna Bago-Horvath
- Department of Experimental Pathology and Pathology of Laboratory Animals, Medical University Vienna and University of Veterinary Medicine Vienna, Vienna 1090, Austria
| | - Lukas Kenner
- Department of Experimental Pathology and Pathology of Laboratory Animals, Medical University Vienna and University of Veterinary Medicine Vienna, Vienna 1090, Austria.,Ludwig Boltzmann Institute for Cancer Research (LBI-CR), Vienna, Austria
| | - Helmuth Popper
- Research Unit Molecular Lung and Pleura Pathology, Institute of Pathology, Medical University Graz, Graz 8010, Austria
| | - Christian Singer
- Departments of Obstetrics and Gynecology and Comprehensive Cancer Center, Medical University of Vienna, Vienna 1090, Austria
| | - Rama Khokha
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada M5G 1L7
| | - Laundette P Jones
- Department of Pharmacology, University of Maryland, Baltimore, School of Medicine, Baltimore, MD 21201, USA
| | - Josef M Penninger
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria
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84
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Lee O, Choi MR, Christov K, Ivancic D, Khan SA. Progesterone receptor antagonism inhibits progestogen-related carcinogenesis and suppresses tumor cell proliferation. Cancer Lett 2016; 376:310-7. [PMID: 27080304 DOI: 10.1016/j.canlet.2016.04.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 04/05/2016] [Accepted: 04/06/2016] [Indexed: 12/12/2022]
Abstract
PURPOSE Blockade of the progestogen-progesterone receptor (PR) axis is a novel but untested strategy for breast cancer prevention. We report preclinical data evaluating telapristone acetate (TPA), ulipristal acetate (UPA), and mifepristone. METHODS Tumors were induced with medroxyprogesterone acetate (MPA) plus 7,12-dimethylbenz[a]anthracene (DMBA) in mice, and MPA or progesterone plus N-methyl-N-nitrosourea (MNU) in rats. Mammary gland histology, tumor incidence, latency, multiplicity, burden and histology were evaluated, along with immunohistochemical labeling of pHH3 (proliferation), CD34 (angiogenesis), and estrogen and progesterone receptors (ER and PR). A concentration gradient of TPA, UPA, and mifepristone was tested for growth inhibition of T47D spheroids. RESULTS In mouse mammary glands, no tumors formed, but TPA opposed the pro-hyperplastic effects of MPA (p = 0.002). In rats, TPA decreased tumor incidence (p = 0.037 for MPA + TPA vs. MPA, and p = 0.032 for progesterone + TPA vs. progesterone) and tumor burden (p = 0.042 for progesterone + TPA vs. progesterone), with significant decreases in pHH3 and CD34 positive cells. TPA and UPA were superior to mifepristone in growth inhibition of T47D spheroids. CONCLUSION TPA has consistent anti-tumorigenic effects in several models, which are accompanied by decreases in cell proliferation, angiogenesis, and hormone receptor expression.
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Affiliation(s)
- Oukseub Lee
- Department of Surgery, Northwestern University, Chicago, IL, USA
| | - Mi-Ran Choi
- Department of Surgery, Northwestern University, Chicago, IL, USA
| | - Konstantin Christov
- Department of Pathology, University of Illinois at Chicago, Chicago, IL, USA
| | - David Ivancic
- Department of Surgery, Northwestern University, Chicago, IL, USA
| | - Seema A Khan
- Department of Surgery, Northwestern University, Chicago, IL, USA; Feinberg College of Medicine, The Robert H. Lurie Cancer Center, Northwestern University, Chicago, IL, USA.
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85
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Esber N, Cherbonnier C, Resche-Rigon M, Hamze A, Alami M, Fagart J, Loosfelt H, Lombès M, Chabbert-Buffet N. Anti-Tumoral Effects of Anti-Progestins in a Patient-Derived Breast Cancer Xenograft Model. Discov Oncol 2016; 7:137-47. [DOI: 10.1007/s12672-016-0255-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 02/05/2016] [Indexed: 12/27/2022] Open
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86
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Liu R, Shi P, Nie Z, Liang H, Zhou Z, Chen W, Chen H, Dong C, Yang R, Liu S, Chen C. Mifepristone Suppresses Basal Triple-Negative Breast Cancer Stem Cells by Down-regulating KLF5 Expression. Theranostics 2016; 6:533-44. [PMID: 26941846 PMCID: PMC4775863 DOI: 10.7150/thno.14315] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/09/2016] [Indexed: 12/31/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is currently the most malignant subtype of breast cancers without effective targeted therapies. Mifepristone (MIF), a drug regularly used for abortion, has been reported to have anti-tumor activity in multiple hormone-dependent cancers, including luminal type breast cancers. In this study, we showed that MIF suppressed tumor growth of the TNBC cell lines and patient-derived xenografts in NOD-SCID mice. Furthermore, MIF reduced the TNBC cancer stem cell (CSC) population through down-regulating KLF5 expression, a stem cell transcription factor over-expressed in basal type TNBC and promoting cell proliferation, survival and stemness. Interestingly, MIF suppresses the expression of KLF5 through inducing the expression of miR-153. Consistently, miR-153 decreases CSC and miR-153 inhibitor rescued MIF-induced down-regulation of the KLF5 protein level and CSC ratio. Taken together, our findings suggest that MIF inhibits basal TNBC via the miR-153/KLF5 axis and MIF may be used for the treatment of TNBC.
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87
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Simões BM, Alferez DG, Howell SJ, Clarke RB. The role of steroid hormones in breast cancer stem cells. Endocr Relat Cancer 2015; 22:T177-86. [PMID: 26381288 DOI: 10.1530/erc-15-0350] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/15/2015] [Indexed: 12/22/2022]
Abstract
Breast cancer stem cells (BCSCs) are potent tumor-initiating cells in breast cancer, the most common cancer among women. BCSCs have been suggested to play a key role in tumor initiation which can lead to disease progression and formation of metastases. Moreover, BCSCs are thought to be the unit of selection for therapy-resistant clones since they survive conventional treatments, such as chemotherapy, irradiation, and hormonal therapy. The importance of the role of hormones for both normal mammary gland and breast cancer development is well established, but it was not until recently that the effects of hormones on BCSCs have been investigated. This review will discuss recent studies highlighting how ovarian steroid hormones estrogen and progesterone, as well as therapies against them, can regulate BCSC activity.
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Affiliation(s)
- Bruno M Simões
- Breast Biology GroupBreast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Wilmslow Road, Manchester M20 4BX, UKDepartment of Medical OncologyThe Christie NHS Foundation Trust, Wilmslow Road, Manchester M20 4BX, UK
| | - Denis G Alferez
- Breast Biology GroupBreast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Wilmslow Road, Manchester M20 4BX, UKDepartment of Medical OncologyThe Christie NHS Foundation Trust, Wilmslow Road, Manchester M20 4BX, UK
| | - Sacha J Howell
- Breast Biology GroupBreast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Wilmslow Road, Manchester M20 4BX, UKDepartment of Medical OncologyThe Christie NHS Foundation Trust, Wilmslow Road, Manchester M20 4BX, UK Breast Biology GroupBreast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Wilmslow Road, Manchester M20 4BX, UKDepartment of Medical OncologyThe Christie NHS Foundation Trust, Wilmslow Road, Manchester M20 4BX, UK
| | - Robert B Clarke
- Breast Biology GroupBreast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Wilmslow Road, Manchester M20 4BX, UKDepartment of Medical OncologyThe Christie NHS Foundation Trust, Wilmslow Road, Manchester M20 4BX, UK
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88
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Esber N, Le Billan F, Resche-Rigon M, Loosfelt H, Lombès M, Chabbert-Buffet N. Ulipristal Acetate Inhibits Progesterone Receptor Isoform A-Mediated Human Breast Cancer Proliferation and BCl2-L1 Expression. PLoS One 2015; 10:e0140795. [PMID: 26474308 PMCID: PMC4608808 DOI: 10.1371/journal.pone.0140795] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 09/30/2015] [Indexed: 12/20/2022] Open
Abstract
The progesterone receptor (PR) with its isoforms and ligands are involved in breast tumorigenesis and prognosis. We aimed at analyzing the respective contribution of PR isoforms, PRA and PRB, in breast cancer cell proliferation in a new estrogen-independent cell based-model, allowing independent PR isoforms analysis. We used the bi-inducible human breast cancer cell system MDA-iPRAB. We studied the effects and molecular mechanisms of action of progesterone (P4) and ulipristal acetate (UPA), a new selective progesterone receptor modulator, alone or in combination. P4 significantly stimulated MDA-iPRA expressing cells proliferation. This was associated with P4-stimulated expression of the anti-apoptotic factor BCL2-L1 and enhanced recruitment of PRA, SRC-1 and RNA Pol II onto the +58 kb PR binding motif of the BCL2-L1 gene. UPA decreased cell proliferation and repressed BCL2-L1 expression in the presence of PRA, correlating with PRA and SRC1 but not RNA Pol II recruitment. These results bring new information on the mechanism of action of PR ligands in controlling breast cancer cell proliferation through PRA in an estrogen independent model. Evaluation of PR isoforms ratio, as well as molecular signature studies based on PRA target genes could be proposed to facilitate personalized breast cancer therapy. In this context, UPA could be of interest in endocrine therapy. Further confirmation in the clinical setting is required.
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Affiliation(s)
- Nathalie Esber
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche-Scientifique 1185, Faculté de Médecine Paris Sud, Le Kremlin-Bicêtre, France
- Université Paris-Sud, Faculté de Médecine Paris Sud, Unité Mixte de Recherche-Scientifique 1185, Le Kremlin-Bicêtre, France
- HRA-Pharma, Paris, France
| | - Florian Le Billan
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche-Scientifique 1185, Faculté de Médecine Paris Sud, Le Kremlin-Bicêtre, France
- Université Paris-Sud, Faculté de Médecine Paris Sud, Unité Mixte de Recherche-Scientifique 1185, Le Kremlin-Bicêtre, France
| | | | - Hugues Loosfelt
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche-Scientifique 1185, Faculté de Médecine Paris Sud, Le Kremlin-Bicêtre, France
- Université Paris-Sud, Faculté de Médecine Paris Sud, Unité Mixte de Recherche-Scientifique 1185, Le Kremlin-Bicêtre, France
| | - Marc Lombès
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche-Scientifique 1185, Faculté de Médecine Paris Sud, Le Kremlin-Bicêtre, France
- Université Paris-Sud, Faculté de Médecine Paris Sud, Unité Mixte de Recherche-Scientifique 1185, Le Kremlin-Bicêtre, France
- Service d’Endocrinologie et des Maladies de la Reproduction, assistance Publique-Hôpitaux de Paris, Hôpital Bicêtre, Le Kremlin Bicêtre, France
| | - Nathalie Chabbert-Buffet
- Service de Gynécologie Obstétrique Médecine de la Reproduction, Hôpitaux Universitaires Est Parisien site Tenon, AP-HP, Paris, France
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche-Scientifique 938, Centre de Recherche Saint Antoine, Université Pierre et Marie Curie, Paris, France
- * E-mail:
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89
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Osteoprotegerin (OPG), The Endogenous Inhibitor of Receptor Activator of NF-κB Ligand (RANKL), is Dysregulated in BRCA Mutation Carriers. EBioMedicine 2015; 2:1331-9. [PMID: 26629528 PMCID: PMC4634624 DOI: 10.1016/j.ebiom.2015.08.037] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 08/26/2015] [Accepted: 08/26/2015] [Indexed: 12/29/2022] Open
Abstract
Breast cancer development in BRCA1/2 mutation carriers is a net consequence of cell-autonomous and cell nonautonomous factors which may serve as excellent targets for cancer prevention. In light of our previous data we sought to investigate the consequences of the BRCA-mutation carrier state on RANKL/osteoprotegerin (OPG) signalling. We analysed serum levels of RANKL, OPG, RANKL/OPG complex, oestradiol (E2), and progesterone (P) during menstrual cycle progression in 391 BRCA1/2-mutation carriers and 782 noncarriers. These studies were complemented by analyses of RANKL and OPG in the serum and mammary tissues of female cynomolgus macaques (n = 88) and serum RANKL and OPG in postmenopausal women (n = 150). BRCA-mutation carriers had lower mean values of free serum OPG in particular in BRCA1-mutation carriers (p = 0.018) compared with controls. Among BRCA1/2 mutation carriers, lower OPG levels were associated with germline mutation locations known to confer an increased breast cancer risk (p = 0.003). P is associated with low OPG levels in serum and tissue, particularly in BRCA-mutation carriers (rho = − 0.216; p = 0.002). Serum OPG levels were inversely correlated (rho = − 0.545, p < 0.001) with mammary epithelial proliferation measured by Ki67 expression and increased (p = 0.01) in postmenopause. The P–RANKL/OPG system is dysregulated in BRCA-mutation carriers. These and previously published data provide a strong rationale for further investigation of antiprogestogens or an anti-RANKL antibody such as denosumab for breast cancer prevention. Osteoprotegerin (OPG) is the endogenous inhibitor of Receptor Activator of NF-κB Ligand (RANKL) RANKL has been shown to be crucially important in progesterone-mediated breast carcinogenesis Serum OPG is regulated by progesterone and low in BRCA1/2 mutation carriers Low serum OPG is associated with increased proliferation in the mammary gland Antiprogestogens or anti-RANKL antibody (denosumab) may be new strategies for breast cancer prevention in BRCA1/2 carriers.
Preventing deadly cancers is a high priority of 21st century medicine. To find the most promising cancer causing targets which can be modulated using chemo-preventive drugs remains the biggest challenge. In this paper we show that OPG, which is the physiological antagonist of RANKL (a factor known to be crucially involved in breast carcinogenesis), is low in women who have inherited a gene mutation (i.e. in BRCA1 or 2) which puts them at extremely high risk of developing breast cancer. An antibody which mimics OPG might be a very attractive option in preventing breast cancer.
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90
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Lim HY, Im KS, Kim NH, Kim HW, Shin JI, Yhee JY, Sur JH. Effects of Obesity and Obesity-Related Molecules on Canine Mammary Gland Tumors. Vet Pathol 2015; 52:1045-51. [PMID: 25883120 DOI: 10.1177/0300985815579994] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Obesity can affect the clinical course of a number of diseases, including breast cancer in women and mammary gland tumors in female dogs, via the secretion of various cytokines and hormones. The objective of this study was to examine the expression patterns of obesity-related molecules such as aromatase, leptin, and insulin-like growth factor 1 receptor (IGF-1 R) in canine mammary carcinomas (CMCs) on the basis of the body condition score (BCS). Comparative analyses of the expression of these molecules, together with prognostic factors for CMCs, including hormone receptors (HRs; estrogen and progesterone receptors), lymphatic invasion, central necrosis of the tumor, and histologic grade, were performed on 56 CMCs. The mean age of CMC onset was lower in the overweight or obese group (8.7 ± 1.9 years) than in the lean or ideal body weight group (10.4 ± 2.7 years). The proportion of poorly differentiated (grade III) tumors was significantly higher in the overweight or obese female dogs. Aromatase expression was significantly higher in the overweight or obese group and was correlated with the expression of HRs (P = .025). These findings suggest that overweight or obese status might affect the development and behavior of CMCs by tumor-adipocyte interactions and increased HR-related tumor growth.
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Affiliation(s)
- H-Y Lim
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, Republic of Korea
| | - K-S Im
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, Republic of Korea
| | - N-H Kim
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, Republic of Korea
| | - H-W Kim
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, Republic of Korea
| | - J-I Shin
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, Republic of Korea
| | - J-Y Yhee
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - J-H Sur
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, Republic of Korea
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91
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Phillips KA, Lindeman GJ. Breast cancer prevention for BRCA1 and BRCA2 mutation carriers: is there a role for tamoxifen? Future Oncol 2015; 10:499-502. [PMID: 24754577 DOI: 10.2217/fon.13.278] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Kelly-Anne Phillips
- Division of Cancer Medicine, Peter MacCallum Cancer Centre, Locked Bag 1, A'Beckett St, Victoria, 8006, Australia
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92
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Guil-Luna S, Stenvang J, Brünner N, De Andrés FJ, Rollón E, Domingo V, Sánchez-Céspedes R, Millán Y, Martín de Las Mulas J. Progesterone receptor isoform A may regulate the effects of neoadjuvant aglepristone in canine mammary carcinoma. BMC Vet Res 2014; 10:296. [PMID: 25515784 PMCID: PMC4280049 DOI: 10.1186/s12917-014-0296-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 12/08/2014] [Indexed: 11/30/2022] Open
Abstract
Background Progesterone receptors play a key role in the development of canine mammary tumours, and recent research has focussed on their possible value as therapeutic targets using antiprogestins. Cloning and sequencing of the progesterone receptor gene has shown that the receptor has two isoforms, A and B, transcribed from a single gene. Experimental studies in human breast cancer suggest that the differential expression of progesterone receptor isoforms has implications for hormone therapy responsiveness. This study examined the effects of the antiprogestin aglepristone on cell proliferation and mRNA expression of progesterone receptor isoforms A and B in mammary carcinomas in dogs treated with 20 mg/Kg of aglepristone (n = 22) or vehicle (n = 5) twice before surgery. Results Formalin-fixed, paraffin-embedded tissue samples taken before and after treatment were used to analyse total progesterone receptor and both isoforms by RT-qPCR and Ki67 antigen labelling. Both total progesterone receptor and isoform A mRNA expression levels decreased after treatment with aglepristone. Furthermore, a significant decrease in the proliferation index (percentage of Ki67-labelled cells) was observed in progesterone-receptor positive and isoform-A positive tumours in aglepristone-treated dogs. Conclusions These findings suggest that the antiproliferative effects of aglepristone in canine mammary carcinomas are mediated by progesterone receptor isoform A. Electronic supplementary material The online version of this article (doi:10.1186/s12917-014-0296-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Silvia Guil-Luna
- Department of Comparative Pathology, Veterinary Faculty, University of Córdoba, Edificio de Sanidad Animal. Campus de Rabanales. Carretera de Madrid-Cádiz Km. 396, 14014, Córdoba, Spain.
| | - Jan Stenvang
- Institute of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Nils Brünner
- Institute of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | | | - Eva Rollón
- Small Animal Clinic Canymar, Cádiz, Spain.
| | | | - Raquel Sánchez-Céspedes
- Department of Comparative Pathology, Veterinary Faculty, University of Córdoba, Edificio de Sanidad Animal. Campus de Rabanales. Carretera de Madrid-Cádiz Km. 396, 14014, Córdoba, Spain.
| | - Yolanda Millán
- Department of Comparative Pathology, Veterinary Faculty, University of Córdoba, Edificio de Sanidad Animal. Campus de Rabanales. Carretera de Madrid-Cádiz Km. 396, 14014, Córdoba, Spain.
| | - Juana Martín de Las Mulas
- Department of Comparative Pathology, Veterinary Faculty, University of Córdoba, Edificio de Sanidad Animal. Campus de Rabanales. Carretera de Madrid-Cádiz Km. 396, 14014, Córdoba, Spain.
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93
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Abstract
In 2007, three scientists, Drs. Mario R. Capecchi, Martin J. Evans, and Oliver Smithies, received the Nobel Prize in Physiology or Medicine for their contributions of introducing specific gene modifications into mice. This technology, commonly referred to as gene targeting or knockout, has proven to be a powerful means for precisely manipulating the mammalian genome and has generated great impacts on virtually all phases of mammalian biology and basic biomedical research. Of note, germline mutations of many genes, especially tumor suppressors, often result in lethality during embryonic development or at developmental stages before tumor formation. This obstacle has been effectively overcome by the use of conditional knockout technology in conjunction with Cre-LoxP- or Flp-Frt-mediated temporal and/or spatial systems to generate genetic switches for precise DNA recombination. Currently, numerous conditional knockout mouse models have been successfully generated and applied in studying tumor initiation, progression, and metastasis. This review summarizes some conditional mutant mouse models that are widely used in cancer research and our understanding of the possible mechanisms underlying tumorigenesis.
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Affiliation(s)
- Chu-Xia Deng
- Genetics of Development and Disease Branch, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892
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94
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Abstract
Antiprogestins constitute a group of compounds, developed since the early 1980s, that bind progesterone receptors with different affinities. The first clinical uses for antiprogestins were in reproductive medicine, e.g., menstrual regulation, emergency contraception, and termination of early pregnancies. These initial applications, however, belied the capacity for these compounds to interfere with cell growth. Within the context of gynecological diseases, antiprogestins can block the growth of and kill gynecological-related cancer cells, such as those originating in the breast, ovary, endometrium, and cervix. They can also interrupt the excessive growth of cells giving rise to benign gynecological diseases such as endometriosis and leiomyomata (uterine fibroids). In this article, we present a review of the literature providing support for the antigrowth activity that antiprogestins impose on cells in various gynecological diseases. We also provide a summary of the cellular and molecular mechanisms reported for these compounds that lead to cell growth inhibition and death. The preclinical knowledge gained during the past few years provides robust evidence to encourage the use of antiprogestins in order to alleviate the burden of gynecological diseases, either as monotherapies or as adjuvants of other therapies with the perspective of allowing for long-term treatments with tolerable side effects. The key to the clinical success of antiprogestins in this field probably lies in selecting those patients who will benefit from this therapy. This can be achieved by defining the genetic makeup required - within each particular gynecological disease - for attaining an objective response to antiprogestin-driven growth inhibition therapy.Free Spanish abstractA Spanish translation of this abstract is freely available at http://www.reproduction-online.org/content/149/1/15/suppl/DC1.
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Affiliation(s)
- Alicia A Goyeneche
- Division of Basic Biomedical SciencesSanford School of Medicine, The University of South Dakota, Vermillion, South Dakota 57069, USA
| | - Carlos M Telleria
- Division of Basic Biomedical SciencesSanford School of Medicine, The University of South Dakota, Vermillion, South Dakota 57069, USA
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95
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Guo XE, Ngo B, Modrek AS, Lee WH. Targeting tumor suppressor networks for cancer therapeutics. Curr Drug Targets 2014; 15:2-16. [PMID: 24387338 DOI: 10.2174/1389450114666140106095151] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 10/17/2013] [Accepted: 11/03/2013] [Indexed: 01/07/2023]
Abstract
Cancer is a consequence of mutations in genes that control cell proliferation, differentiation and cellular homeostasis. These genes are classified into two categories: oncogenes and tumor suppressor genes. Together, overexpression of oncogenes and loss of tumor suppressors are the dominant driving forces for tumorigenesis. Hence, targeting oncogenes and tumor suppressors hold tremendous therapeutic potential for cancer treatment. In the last decade, the predominant cancer drug discovery strategy has relied on a traditional reductionist approach of dissecting molecular signaling pathways and designing inhibitors for the selected oncogenic targets. Remarkable therapies have been developed using this approach; however, targeting oncogenes is only part of the picture. Our understanding of the importance of tumor suppressors in preventing tumorigenesis has also advanced significantly and provides a new therapeutic window of opportunity. Given that tumor suppressors are frequently mutated, deleted, or silenced with loss-of-function, restoring their normal functions to treat cancer holds tremendous therapeutic potential. With the rapid expansion in our knowledge of cancer over the last several decades, developing effective anticancer regimens against tumor suppressor pathways has never been more promising. In this article, we will review the concept of tumor suppression, and outline the major therapeutic strategies and challenges of targeting tumor suppressor networks for cancer therapeutics.
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Affiliation(s)
| | | | | | - Wen-Hwa Lee
- Department of Biological Chemistry, School of Medicine, University of California, Irvine. 240 Med Sci D, Irvine, CA 92697, USA.
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96
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97
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Huerta M, Fernández-Márquez J, Cabello JL, Medrano A, Querol E, Cedano J. Analysis of gene expression for studying tumor progression: the case of glucocorticoid administration. Gene 2014; 549:33-40. [PMID: 25017053 DOI: 10.1016/j.gene.2014.07.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 06/10/2014] [Accepted: 07/10/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND Glucocorticoids are commonly used as adjuvant treatment for side-effects and have anti-proliferative activity in several tumors but, on the other hand, their proliferative effect has been reported in several studies, some of them involving the spread of cancer. We shall attempt to reconcile these incongruities from the genomic and tissue-physiology perspectives with our findings. METHODS An accurate phenotype analysis of microarray data can help to solve multiple paradoxes derived from tumor-progression models. We have developed a new strategy to facilitate the study of interdependences among the phenotypes defined by the sample clusters obtained by common clustering methods (HC, SOTA, SOM, PAM). These interdependences are obtained by the detection of non-linear expression-relationships where each fluctuation in the relationship implies a phenotype change and each relationship typology implies a specific phenotype interdependence. As a result, multiple phenotypic changes are identified together with the genes involved in the phenotype transitions. In this way, we study the phenotypic changes from microarray data that describe common phenotypes in cancer from different tissues, and we cross our results with biomedical databases to relate the glucocorticoid activity to the phenotypic changes. RESULTS 11,244 significant non-linear expression relationships, classified into 11 different typologies, have been detected from the data matrix analyzed. From them, 415 non-linear expression relationships were related to glucocorticoid activity. Studying them, we have found the possible reason for opposite effects of some stressor agents like dexamethasone on tumor progression and it has been confirmed by literature. This hidden reason has resulted in being linked with the type of tumor progression of the tissues. In the first type of tumor progression found, new cells can be stressed during proliferation and stressor agents increase tumor proliferation. In the second type, cell stress and tumor proliferation are antagonists so, therefore, stressor agents stop tumor proliferation in order to stress the cells. The non-linear expression relationships among DUSP6, FERMT2, FKBP5, EGFR, NEDD4L and CITED2 genes are used to synthesize these findings.
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Affiliation(s)
- Mario Huerta
- Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - José Fernández-Márquez
- Escola Tècnica Superior de Ingenieria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Jose Luis Cabello
- Escola Tècnica Superior de Ingenieria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Alberto Medrano
- Escola Tècnica Superior de Ingenieria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Enric Querol
- Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Juan Cedano
- Laboratory of Immunology, Regional Norte, Universidad de la Republica, Gral. Rivera 1350, Salto 50.000, Uruguay.
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98
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Hormonal prevention of breast cancer. ANNALES D'ENDOCRINOLOGIE 2014; 75:148-55. [DOI: 10.1016/j.ando.2014.04.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 02/09/2014] [Accepted: 04/29/2014] [Indexed: 11/23/2022]
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99
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Knutson TP, Lange CA. Tracking progesterone receptor-mediated actions in breast cancer. Pharmacol Ther 2014; 142:114-25. [PMID: 24291072 PMCID: PMC3943696 DOI: 10.1016/j.pharmthera.2013.11.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 11/15/2013] [Indexed: 12/13/2022]
Abstract
Ovarian steroid hormones contribute to breast cancer initiation and progression primarily through the actions of their nuclear transcription factors, the estrogen receptor alpha (ERα) and progesterone receptors (PRs). These receptors are important drivers of the luminal A and B subtypes of breast cancer, where estrogen-blocking drugs have been effective endocrine therapies for patients with these tumors. However, many patients do not respond, or become resistant to treatment. When endocrine therapies fail, the luminal subtypes of breast cancer are more difficult to treat because these subtypes are among the most heterogeneous in terms of mutation diversity and gene expression profiles. Recent evidence suggests that progestin and PR actions may be important drivers of luminal breast cancers. Clinical trial data has demonstrated that hormone replacement therapy with progestins drives invasive breast cancer and results in greater mortality. PR transcriptional activity is dependent upon cross-talk with growth factor signaling pathways that alter PR phosphorylation, acetylation, or SUMOylation as mechanisms for regulating PR target gene selection required for increased cell proliferation and survival. Site-specific PR phosphorylation is the primary driver of gene-selective PR transcriptional activity. However, PR phosphorylation and heightened transcriptional activity is coupled to rapid PR protein degradation; the range of active PR detected in tumors is likely to be dynamic. Thus, PR target gene signatures may provide a more accurate means of tracking PR's contribution to tumor progression rather than standard clinical protein-based (IHC) assays. Further development of antiprogestin therapies should be considered alongside antiestrogens and aromatase inhibitors.
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Affiliation(s)
- Todd P Knutson
- Departments of Medicine, Division of Hematology, Oncology, and Transplantation and Pharmacology, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Carol A Lange
- Departments of Medicine, Division of Hematology, Oncology, and Transplantation and Pharmacology, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA.
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100
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Chen J, Wang J, Shao J, Gao Y, Xu J, Yu S, Liu Z, Jia L. The Unique Pharmacological Characteristics of Mifepristone (RU486): From Terminating Pregnancy to Preventing Cancer Metastasis. Med Res Rev 2014; 34:979-1000. [DOI: 10.1002/med.21311] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Jianzhong Chen
- Cancer Metastasis Alert and Prevention Center; College of Chemistry and Chemical Engineering; Fuzhou University; Fuzhou 350002 China
- School of Pharmacy; Fujian University of Traditional Chinese Medicine; Fuzhou 350108 China
| | - Jichuang Wang
- Cancer Metastasis Alert and Prevention Center; College of Chemistry and Chemical Engineering; Fuzhou University; Fuzhou 350002 China
| | - Jingwei Shao
- Cancer Metastasis Alert and Prevention Center; College of Chemistry and Chemical Engineering; Fuzhou University; Fuzhou 350002 China
| | - Yu Gao
- Cancer Metastasis Alert and Prevention Center; College of Chemistry and Chemical Engineering; Fuzhou University; Fuzhou 350002 China
| | - Jianguo Xu
- Cancer Metastasis Alert and Prevention Center; College of Chemistry and Chemical Engineering; Fuzhou University; Fuzhou 350002 China
| | - Suhong Yu
- Cancer Metastasis Alert and Prevention Center; College of Chemistry and Chemical Engineering; Fuzhou University; Fuzhou 350002 China
| | - Zhenhua Liu
- Department of Clinical Oncology; Fujian Province Hospital; Fuzhou 350004 China
| | - Lee Jia
- Cancer Metastasis Alert and Prevention Center; College of Chemistry and Chemical Engineering; Fuzhou University; Fuzhou 350002 China
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