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Adilbayeva A, Kunz J. Pathogenesis of Endometriosis and Endometriosis-Associated Cancers. Int J Mol Sci 2024; 25:7624. [PMID: 39062866 PMCID: PMC11277188 DOI: 10.3390/ijms25147624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/03/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Endometriosis is a hormone-dependent, chronic inflammatory condition that affects 5-10% of reproductive-aged women. It is a complex disorder characterized by the growth of endometrial-like tissue outside the uterus, which can cause chronic pelvic pain and infertility. Despite its prevalence, the underlying molecular mechanisms of this disease remain poorly understood. Current treatment options are limited and focus mainly on suppressing lesion activity rather than eliminating it entirely. Although endometriosis is generally considered a benign condition, substantial evidence suggests that it increases the risk of developing specific subtypes of ovarian cancer. The discovery of cancer driver mutations in endometriotic lesions indicates that endometriosis may share molecular pathways with cancer. Moreover, the application of single-cell and spatial genomics, along with the development of organoid models, has started to illuminate the molecular mechanisms underlying disease etiology. This review aims to summarize the key genetic mutations and alterations that drive the development and progression of endometriosis to malignancy. We also review the significant recent advances in the understanding of the molecular basis of the disorder, as well as novel approaches and in vitro models that offer new avenues for improving our understanding of disease pathology and for developing new targeted therapies.
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Affiliation(s)
| | - Jeannette Kunz
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, 5/1 Kerey and Zhanibek Khans St, Astana 020000, Kazakhstan;
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2
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Tang L, Bian C. Research progress in endometriosis-associated ovarian cancer. Front Oncol 2024; 14:1381244. [PMID: 38725626 PMCID: PMC11079782 DOI: 10.3389/fonc.2024.1381244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 04/15/2024] [Indexed: 05/12/2024] Open
Abstract
Endometriosis-associated ovarian cancer (EAOC) is a unique subtype of ovarian malignant tumor originating from endometriosis (EMS) malignant transformation, which has gradually become one of the hot topics in clinical and basic research in recent years. According to clinicopathological and epidemiological findings, precancerous lesions of ovarian clear cell carcinoma (OCCC) and ovarian endometrioid carcinoma (OEC) are considered as EMS. Given the large number of patients with endometriosis and its long time window for malignant transformation, sufficient attention should be paid to EAOC. At present, the pathogenesis of EAOC has not been clarified, no reliable biomarkers have been found in the diagnosis, and there is still a lack of basis and targets for stratified management and precise treatment in the treatment. At the same time, due to the long medical history of patients, the fast growth rate of cancer cells, and the possibility of eliminating the earliest endometriosis-associated ovarian cancer, it is difficult to find the corresponding histological evidence. As a result, few patients are finally diagnosed with EAOC, which increases the difficulty of in-depth study of EAOC. This article reviews the epidemiology, pathogenesis, risk factors, clinical diagnosis, new treatment strategies and prognosis of endometriosis-associated ovarian cancer, and prospects the future direction of basic research and clinical transformation, in order to achieve stratified management and personalized treatment of ovarian cancer patients.
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Affiliation(s)
| | - Ce Bian
- Department of Gynecology and Obstetrics, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, Chengdu, Sichuan Province, China
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3
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Steinbuch SC, Lüß AM, Eltrop S, Götte M, Kiesel L. Endometriosis-Associated Ovarian Cancer: From Molecular Pathologies to Clinical Relevance. Int J Mol Sci 2024; 25:4306. [PMID: 38673891 PMCID: PMC11050613 DOI: 10.3390/ijms25084306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/08/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Endometriosis is a chronic condition affecting reproductive-aged women, characterized by the growth of ectopic endometrial tissue. Despite being benign, endometriosis is associated with an increased risk of certain cancers, including endometriosis-associated ovarian cancer (EAOC). Ovarian cancer is rare, but more common in women with endometriosis, particularly endometrioid and clear-cell carcinomas. Factors such as hormonal imbalance, reproductive history, environmental exposures, and genetic predisposition contribute to the malignant transformation of endometriosis. Thus, understanding potential risk factors causing malignancy is crucial. Over the past few decades, various genetic mutations, microRNAs, as well as tumor microenvironmental factors have been identified, impacting pathways like PI3K/AKT/mTOR, DNA repair mechanisms, oxidative stress, and inflammation. Thus, this review aims to summarize molecular studies involved in EAOC pathogenesis as potential therapeutic targets. However, further research is needed to better understand the molecular and environmental factors driving EAOC development, to target the susceptibility of endometriotic lesions to malignant progression, and to identify effective therapeutic strategies.
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Affiliation(s)
- Sophie Charlotte Steinbuch
- Department of Obstetrics and Gynecology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Anne-Marie Lüß
- Department of Obstetrics and Gynecology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Stephanie Eltrop
- Department of Obstetrics and Gynecology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Martin Götte
- Department of Obstetrics and Gynecology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
- Cells-in-Motion Interfaculty Centre (CiMIC), University of Münster, 48149 Münster, Germany
| | - Ludwig Kiesel
- Department of Obstetrics and Gynecology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
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4
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Chen B, Zhao L, Yang R, Xu T. New insights about endometriosis-associated ovarian cancer: pathogenesis, risk factors, prediction and diagnosis and treatment. Front Oncol 2024; 14:1329133. [PMID: 38384812 PMCID: PMC10879431 DOI: 10.3389/fonc.2024.1329133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 01/23/2024] [Indexed: 02/23/2024] Open
Abstract
Previous studies have shown that the risk of malignant transformation of endometriosis in premenopausal women is approximately 1%, significantly impacting the overall well-being and quality of life of affected women. Presently, the diagnostic gold standard for endometriosis-associated ovarian cancer (EAOC) continues to be invasive laparoscopy followed by histological examination. However, the application of this technique is limited due to its high cost, highlighting the importance of identifying a non-invasive diagnostic approach. Therefore, there is a critical need to explore non-invasive diagnostic methods to improve diagnostic precision and optimize clinical outcomes for patients. This review presents a comprehensive survey of the current progress in comprehending the pathogenesis of malignant transformation in endometriosis. Furthermore, it examines the most recent research discoveries concerning the diagnosis of EAOC and emphasizes potential targets for therapeutic intervention. The ultimate objective is to improve prevention, early detection, precise diagnosis, and treatment approaches, thereby optimizing the clinical outcomes for patients.
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Affiliation(s)
| | | | | | - Tianmin Xu
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, China
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Bedrick BS, Courtright L, Zhang J, Snow M, Amendola ILS, Nylander E, Cayton-Vaught K, Segars J, Singh B. A Systematic Review of Epigenetics of Endometriosis. F&S REVIEWS 2024; 5:100070. [PMID: 38524912 PMCID: PMC10956470 DOI: 10.1016/j.xfnr.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Objective To assess the current literature evaluating the epigenetics of endometriosis in humans. Evidence Review A systematic review was conducted in accordance with the PRISMA guidelines within PubMed, EBSCOhost, Cochrane Library, Embase, Scopus, and Web of Science Core Collection. A comprehensive search strategy was developed by a data informationist. Observational and interventional studies assessing epigenetics in humans published in English up to January 15th, 2023, were included. Two reviewers independently screened studies evaluating the role of epigenetics in endometriosis. The risk of bias was assessed using Cochrane RoB 2.0 tool and the Newcastle-Ottawa scale. Extracted data were analyzed descriptively. Results We identified 18.639 studies, of which 57 were included, comprising 1.623 patients with endometriosis and 1.243 controls. Among the 57 studies included, 50 (88%) were case-control studies, and 7 (12%) were cross-sectional. Fifty-nine percent of the studies were Asian, 25% were from America, 14% were European, and 2% were from Africa. Acetylation and methylation were the two main key histone modifications that were centered in this review. Accordingly, we classified the studies as those focusing on genome-wide methylation and those on histone acetylation. Several studies identified an association between endometriosis and hypermethylated genes, including the PGR-B, SF-1, and RASSF1A. The genes HOXA10, COX-2, IL-12B, and GATA6 were found to be hypomethylated in endometriotic tissue by several studies. In regards to histone modification, multiple studies reported that the acetylation levels of histones H3 and H4 affect multiple genes associated with endometriosis. In addition, HDAC2 was found to be elevated in endometriosis patients in two studies. Conclusion Several studies reported a significant difference between specific genes' methylation levels in endometrial biopsies and normal tissue, which suggests that DNA methylation may play an important role in the modulation of the genotype in endometriotic tissue. Acetylation and methylation are the two key histone modifications leading to differential gene expression in endometriotic tissues. The alterations in gene expression reported by the 57 studies can have direct implications on cell cycle growth, cell cycle arrest, and apoptosis and, therefore, might play a key role in the pathogenesis of endometriosis. This review offers insight that histone modifications need further research to evaluate their role as potential biomarkers and treatment targets for endometriosis. Although several key similarities were reported, there were some disagreements among the results, which might be attributable to the heterogeneity between studies. Further research with a more robust standardization is needed to validate the epigenetic changes in endometriosis.
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Affiliation(s)
- Bronwyn S. Bedrick
- Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Laura Courtright
- Division of Reproductive Sciences & Women’s Health Research, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jiahui Zhang
- Department of Obstetrics & Gynecology, University of Vermont Medical Center, Burlington, VT, USA
| | - Morgan Snow
- Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Isabela Landsteiner Sampaio Amendola
- Division of Reproductive Sciences & Women’s Health Research, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Elisabeth Nylander
- Informationist Services, Welch Medical Library, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kamaria Cayton-Vaught
- Division of Reproductive Sciences & Women’s Health Research, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - James Segars
- Division of Reproductive Sciences & Women’s Health Research, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Bhuchitra Singh
- Division of Reproductive Sciences & Women’s Health Research, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Terzic M, Aimagambetova G, Kunz J, Bapayeva G, Aitbayeva B, Terzic S, Laganà AS. Molecular Basis of Endometriosis and Endometrial Cancer: Current Knowledge and Future Perspectives. Int J Mol Sci 2021; 22:9274. [PMID: 34502183 PMCID: PMC8431548 DOI: 10.3390/ijms22179274] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/18/2021] [Accepted: 08/25/2021] [Indexed: 02/07/2023] Open
Abstract
The human endometrium is a unique tissue undergoing important changes through the menstrual cycle. Under the exposure of different risk factors in a woman's lifetime, normal endometrial tissue can give rise to multiple pathologic conditions, including endometriosis and endometrial cancer. Etiology and pathophysiologic changes behind such conditions remain largely unclear. This review summarizes the current knowledge of the pathophysiology of endometriosis and its potential role in the development of endometrial cancer from a molecular perspective. A better understanding of the molecular basis of endometriosis and its role in the development of endometrial pathology will improve the approach to clinical management.
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Affiliation(s)
- Milan Terzic
- Department of Medicine, School of Medicine, Nazarbayev University, Kabanbay Batyr Avenue 53, Nur-Sultan 010000, Kazakhstan or (M.T.); (S.T.)
- National Research Center for Maternal and Child Health, Clinical Academic Department of Women’s Health, University Medical Center, Turan Avenue 32, Nur-Sultan 010000, Kazakhstan; (G.B.); (B.A.)
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, 300 Halket Street, Pittsburgh, PA 15213, USA
| | - Gulzhanat Aimagambetova
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Kabanbay Batyr Avenue 53, Nur-Sultan 010000, Kazakhstan;
| | - Jeannette Kunz
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Kabanbay Batyr Avenue 53, Nur-Sultan 010000, Kazakhstan;
| | - Gauri Bapayeva
- National Research Center for Maternal and Child Health, Clinical Academic Department of Women’s Health, University Medical Center, Turan Avenue 32, Nur-Sultan 010000, Kazakhstan; (G.B.); (B.A.)
| | - Botagoz Aitbayeva
- National Research Center for Maternal and Child Health, Clinical Academic Department of Women’s Health, University Medical Center, Turan Avenue 32, Nur-Sultan 010000, Kazakhstan; (G.B.); (B.A.)
| | - Sanja Terzic
- Department of Medicine, School of Medicine, Nazarbayev University, Kabanbay Batyr Avenue 53, Nur-Sultan 010000, Kazakhstan or (M.T.); (S.T.)
| | - Antonio Simone Laganà
- Department of Obstetrics and Gynecology, “Filippo Del Ponte” Hospital, University of Insubria, 21100 Varese, Italy;
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Yang F, Mortlock S, MacGregor S, Iles MM, Landi MT, Shi J, Law MH, Montgomery GW. Genetic Relationship Between Endometriosis and Melanoma. FRONTIERS IN REPRODUCTIVE HEALTH 2021; 3:711123. [PMID: 36304021 PMCID: PMC9580819 DOI: 10.3389/frph.2021.711123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 07/07/2021] [Indexed: 11/13/2022] Open
Abstract
Epidemiological studies have observed that risk of endometriosis is associated with history of cutaneous melanoma and vice versa. Evidence for shared biological mechanisms between the two traits is limited. The aim of this study was to investigate the genetic correlation and causal relationship between endometriosis and melanoma. Summary statistics from genome-wide association meta-analyses (GWAS) for endometriosis and melanoma were used to estimate the genetic correlation between the traits and Mendelian randomization was used to test for a causal association. When using summary statistics from separate female and male melanoma cohorts we identified a significant positive genetic correlation between melanoma in females and endometriosis (rg = 0.144, se = 0.065, p = 0.025). However, we find no evidence of a correlation between endometriosis and melanoma in males or a combined melanoma dataset. Endometriosis was not genetically correlated with skin color, red hair, childhood sunburn occasions, ease of skin tanning, or nevus count suggesting that the correlation between endometriosis and melanoma in females is unlikely to be influenced by pigmentary traits. Mendelian Randomization analyses also provided evidence for a relationship between the genetic risk of melanoma in females and endometriosis. Colocalization analysis identified 27 genomic loci jointly associated with the two diseases regions that contain different causal variants influencing each trait independently. This study provides evidence of a small genetic correlation and relationship between the genetic risk of melanoma in females and endometriosis. Genetic risk does not equate to disease occurrence and differences in the pathogenesis and age of onset of both diseases means it is unlikely that occurrence of melanoma causes endometriosis. This study instead provides evidence that having an increased genetic risk for melanoma in females is related to increased risk of endometriosis. Larger GWAS studies with increased power will be required to further investigate these associations.
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Affiliation(s)
- Fei Yang
- The Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Sally Mortlock
- The Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- *Correspondence: Sally Mortlock
| | - Stuart MacGregor
- Statistical Genetics Group, Department of Genetics and Computational Biology, Queensland Institute of Medical Research Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Mark M. Iles
- Leeds Institute for Data Analytics, University of Leeds, Leeds, United Kingdom
- Leeds Institute of Medical Research, University of Leeds, Leeds, United Kingdom
| | - Maria Teresa Landi
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Jianxin Shi
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Matthew H. Law
- Statistical Genetics Group, Department of Genetics and Computational Biology, Queensland Institute of Medical Research Berghofer Medical Research Institute, Brisbane, QLD, Australia
- School of Biomedical Sciences, Faculty of Health, and Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, QLD, Australia
| | - Grant W. Montgomery
- The Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
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Wang D, Guo C, Li Y, Zhou M, Wang H, Liu J, Chen P. Oestrogen up-regulates DNMT1 and leads to the hypermethylation of RUNX3 in the malignant transformation of ovarian endometriosis. Reprod Biomed Online 2021; 44:27-37. [PMID: 34799276 DOI: 10.1016/j.rbmo.2021.06.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 06/05/2021] [Accepted: 06/17/2021] [Indexed: 01/01/2023]
Abstract
RESEARCH QUESTION What is the mechanism of hypermethylation of runt-related transcription factor 3 (RUNX3) in the eutopic endometrium of endometriosis as biomarker in the malignant transformation of endometriosis? DESIGN Methylation-specific polymerase chain reaction was used to analyse the methylation status of RUNX3 in endometriosis-associated ovarian cancer (EAOC). Primary eutopic endometrial stromal cells (ESC) were isolated from the uteri of patients with ovarian endometriosis. After RUNX3 knockdown by RNA interference technology or ESC treated with oestradiol, the proliferation and invasion ability were evaluated in ESC by using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and transwell assays. RESULTS The frequency of methylation of RUNX3 in neoplastic tissue in the EAOC group was significantly higher than that in the ectopic endometrium of the endometriosis group (P < 0.001), and the frequency of methylation of RUNX3 in the eutopic endometrium of the EAOC group was significantly higher than that in the endometriosis group (P < 0.001). However, there was no significant difference in the eutopic endometrium when compared between the endometriosis group and the control endometrium group (P = 0.233). Silencing RUNX3 promoted the proliferation and invasion of ESC (P < 0.001 and P < 0.001). Following intervention with oestrogen, it was observed that the oestradiol group showed higher levels of RUNX3 methylation (P < 0.001) and DNA methyltransferase 1 (DNMT1) mRNA and protein expression (P < 0.001 and P < 0.001), and lower RUNX3 mRNA and protein expression when compared with the ESC group (P < 0.001 and P < 0.001). CONCLUSION This study demonstrated that hypermethylation of the RUNX3 was related to the malignant transformation of endometriosis and that this process was related to corresponding changes in the eutopic endometrium. Furthermore, the 'oestrogen-DNMT1' signalling pathway may induce the hypermethylation of RUNX3 to promote the malignant transformation of endometriosis.
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Affiliation(s)
- Danbo Wang
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China.
| | - Cuishan Guo
- Department of Gynecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang Liaoning Province 110004, People's Republic of China
| | - Yan Li
- Department of Gynecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang Liaoning Province 110004, People's Republic of China.
| | - Mingyi Zhou
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China
| | - Huimin Wang
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China
| | - Jing Liu
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China
| | - Peng Chen
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang Liaoning Province 110042, People's Republic of China
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Endometriosis Is Associated with a Significant Increase in hTERC and Altered Telomere/Telomerase Associated Genes in the Eutopic Endometrium, an Ex-Vivo and In Silico Study. Biomedicines 2020; 8:biomedicines8120588. [PMID: 33317189 PMCID: PMC7764055 DOI: 10.3390/biomedicines8120588] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 12/13/2022] Open
Abstract
Telomeres protect chromosomal ends and they are maintained by the specialised enzyme, telomerase. Endometriosis is a common gynaecological disease and high telomerase activity and higher hTERT levels associated with longer endometrial telomere lengths are characteristics of eutopic secretory endometrial aberrations of women with endometriosis. Our ex-vivo study examined the levels of hTERC and DKC1 RNA and dyskerin protein levels in the endometrium from healthy women and those with endometriosis (n = 117). The in silico study examined endometriosis-specific telomere- and telomerase-associated gene (TTAG) transcriptional aberrations of secretory phase eutopic endometrium utilising publicly available microarray datasets. Eutopic secretory endometrial hTERC levels were significantly increased in women with endometriosis compared to healthy endometrium, yet dyskerin mRNA and protein levels were unperturbed. Our in silico study identified 10 TTAGs (CDKN2A, PML, ZNHIT2, UBE3A, MCCC2, HSPC159, FGFR2, PIK3C2A, RALGAPA1, and HNRNPA2B1) to be altered in mid-secretory endometrium of women with endometriosis. High levels of hTERC and the identified other TTAGs might be part of the established alteration in the eutopic endometrial telomerase biology in women with endometriosis in the secretory phase of the endometrium and our data informs future research to unravel the fundamental involvement of telomerase in the pathogenesis of endometriosis.
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10
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Guo SW. Cancer-associated mutations in endometriosis: shedding light on the pathogenesis and pathophysiology. Hum Reprod Update 2020; 26:423-449. [PMID: 32154564 DOI: 10.1093/humupd/dmz047] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 10/22/2019] [Accepted: 11/19/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Endometriosis is a benign gynaecological disease. Thus, it came as a complete surprise when it was reported recently that the majority of deep endometriosis lesions harbour somatic mutations and a sizeable portion of them contain known cancer-associated mutations (CAMs). Four more studies have since been published, all demonstrating the existence of CAMs in different subtypes of endometriosis. While the field is still evolving, the confirmation of CAMs has raised many questions that were previously overlooked. OBJECTIVE AND RATIONALE A comprehensive overview of CAMs in endometriosis has been produced. In addition, with the recently emerged understanding of the natural history of endometriotic lesions as well as CAMs in normal and apparently healthy tissues, this review attempts to address the following questions: Why has there been such a wild discrepancy in reported mutation frequencies? Why does ectopic endometrium have a higher mutation rate than that of eutopic endometrium? Would the presence of CAMs in endometriotic lesions increase the risk of cancer to the bearers? Why do endometriotic epithelial cells have much higher mutation frequencies than their stromal counterpart? What clinical implications, if any, do the CAMs have for the bearers? Do these CAMs tell us anything about the pathogenesis and/or pathophysiology of endometriosis? SEARCH METHODS The PubMed database was searched, from its inception to September 2019, for all papers in English using the term 'endometriosis and CAM', 'endometriosis and cancer-driver mutation', 'somatic mutations', 'fibrosis', 'fibrosis and epigenetic', 'CAMs and tumorigenesis', 'somatic mutation and normal tissues', 'oestrogen receptor and fibrosis', 'oxidative stress and fibrosis', 'ARID1A mutation', and 'Kirsten rat sarcoma mutation and therapeutics'. All retrieved papers were read and, when relevant, incorporated into the review results. OUTCOMES Seven papers that identified CAMs in endometriosis using various sequencing methods were retrieved, and their results were somewhat different. Yet, it is apparent that those using microdissection techniques and more accurate sequencing methods found more CAMs, echoing recent discoveries that apparently healthy tissues also harbour CAMs as a result of the replicative aging process. Hence endometriotic lesions, irrespective of subtype, if left intact, would generate CAMs as part of replicative aging, oxidative stress and perhaps other factors yet to be identified and, in some rare cases, develop cancer. The published data still are unable to paint a clear picture on pathogenesis of endometriosis. However, since endometriotic epithelial cells have a higher turnover than their stromal counterpart due to cyclic bleeding, and since the endometriotic stromal component can be formed by refresh influx of mesenchymal cells through epithelial-mesenchymal transition, endothelial-mesenchymal transition, mesothelial-mesenchymal transition and other processes as well as recruitment of bone-marrow-derived stem cells and outflow due to smooth muscle metaplasia, endometriotic epithelial cells have much higher mutation frequencies than their stromal counterpart. The epithelial and stromal cellular components develop in a dependent and co-evolving manner. Genes involved in CAMs are likely to be active players in lesional fibrogenesis, and hyperestrogenism and oxidative stress are likely drivers of both CAMs and fibrogenesis. Finally, endometriotic lesions harbouring CAMs would conceivably be more refractory to medical treatment, due, in no small part, to their high fibrotic content and reduced vascularity and cellularity. WIDER IMPLICATIONS The accumulating data on CAMs in endometriosis have shed new light on the pathogenesis and pathophysiology of endometriosis. They also suggest new challenges in management. The distinct yet co-evolving developmental trajectories of endometriotic stroma and epithelium underscore the importance of the lesional microenvironment and ever-changing cellular identity. Mutational profiling of normal endometrium from women of different ages and reproductive history is needed in order to gain a deeper understanding of the pathogenesis. Moreover, one area that has conspicuously received scant attention is the epigenetic landscape of ectopic, eutopic and normal endometrium.
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Affiliation(s)
- Sun-Wei Guo
- Shanghai Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China.,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Shanghai 200011, China
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11
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The Genetic Background of Endometriosis: Can ESR2 and CYP19A1 Genes Be a Potential Risk Factor for Its Development? Int J Mol Sci 2020; 21:ijms21218235. [PMID: 33153202 PMCID: PMC7663510 DOI: 10.3390/ijms21218235] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 12/22/2022] Open
Abstract
Endometriosis is defined as the presence of endometrial foci, localized beyond their primary site, i.e., the uterine cavity. The etiology of this disease is rather complex. Its development is supported by hormonal, immunological, and environmental factors. During recent years, particular attention has been focused on the genetic mechanisms that may be of particular significance for the increased incidence rates of endometriosis. According to most recent studies, ESR2 and CYP19A1 genes may account for the potential risk factors of infertility associated with endometriosis. The paper presents a thorough review of the latest reports and data concerning the genetic background of the risk for endometriosis development.
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12
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Mikhaleva LM, Davydov AI, Patsap OI, Mikhaylenko EV, Nikolenko VN, Neganova ME, Klochkov SG, Somasundaram SG, Kirkland CE, Aliev G. Malignant Transformation and Associated Biomarkers of Ovarian Endometriosis: A Narrative Review. Adv Ther 2020; 37:2580-2603. [PMID: 32385745 PMCID: PMC7467438 DOI: 10.1007/s12325-020-01363-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Indexed: 02/07/2023]
Abstract
This review focuses on pathogenesis of endometriosis, its possible biomarkers and role in endometriosis-associated ovarian cancer. We analyzed various databases to obtain new insights, theories, and biomarkers associated with endometriosis. There are several theories of endometriosis development and biomarker changes including atypical forms. A number of studies have attempted to establish specific, reliable biomarkers to help diagnose endometriosis and endometriosis-associated diseases on the basis of different pathogenetic pathways. Nevertheless, despite intensive research extending even to the molecular level, the origin, natural history, malignant transformation, and laboratory management of endometriosis and related diseases are not yet clearly defined. Therefore, early laboratory diagnoses of endometriosis, its atypical form, and endometriosis-associated ovarian tumors are important problems that require further study in the context of advanced therapeutic strategies to provide maximal health benefits to patients.
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Affiliation(s)
- Liudmila M Mikhaleva
- Department of Clinical Pathology, Federal State Budgetary Institution "Research Institute of Human Morphology", 3, Tsyurupy Str, Moscow, 117418, Russian Federation
| | - Aleksandr I Davydov
- Department of Obstetrics, Gynecology and Perinatology, Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2, Trubetskaya Str., Moscow, 119991, Russian Federation
- Department of Pathology, City Clinical Hospital After Named S.S. Udina, 4, Bld., 3, Kolomensky Passage, Moscow, 115446, Russian Federation
| | - Olga I Patsap
- Department of Pathology, City Clinical Hospital After Named S.S. Udina, 4, Bld., 3, Kolomensky Passage, Moscow, 115446, Russian Federation
| | - Elizaveta V Mikhaylenko
- I. M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), 8/2 Trubetskaya Str, Moscow, 119991, Russia
| | - Vladimir N Nikolenko
- I. M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), 8/2 Trubetskaya Str, Moscow, 119991, Russia
- Department of Normal and Topographic Anatomy, M.V. Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
| | - Margarita E Neganova
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny pr, Chernogolovka, Moscow Region, 142432, Russia
| | - Sergey G Klochkov
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny pr, Chernogolovka, Moscow Region, 142432, Russia
| | | | - Cecil E Kirkland
- Department of Biological Sciences, Salem University, Salem, WV, 26426, USA
| | - Gjumrakch Aliev
- Department of Clinical Pathology, Federal State Budgetary Institution "Research Institute of Human Morphology", 3, Tsyurupy Str, Moscow, 117418, Russian Federation.
- I. M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), 8/2 Trubetskaya Str, Moscow, 119991, Russia.
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny pr, Chernogolovka, Moscow Region, 142432, Russia.
- GALLY International Research Institute, 7733 Louis Pasteur Drive, #330, San Antonio, TX, 78229, USA.
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13
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Paulino E, de Melo AC, da Silva VF. Endometrioid Carcinoma Arising from an Endometriosis-Associated Abdominal Wall Scar. AMERICAN JOURNAL OF CASE REPORTS 2020; 21:e922973. [PMID: 32479429 PMCID: PMC7295312 DOI: 10.12659/ajcr.922973] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Patient: Female, 45-year-old Final Diagnosis: Endometrial cancer Symptoms: Abdominal discomfort • abdominal distension Medication: — Clinical Procedure: Hormone therapy • surgery removal Specialty: Oncology
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Affiliation(s)
- Eduardo Paulino
- Departmemt of Gynecology Oncology, Brazilian National Cancer Institute, Rio de Janeiro, Brazil
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14
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Ukrainets RV, Korneva YS, Dorosevich AE. [Abnormal gut microbiota-induced hypoestrogenemia as a possible risk factor for malignancy in endometrioid heterotopia]. Arkh Patol 2020; 82:57-61. [PMID: 32307440 DOI: 10.17116/patol20208202157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This paper reveals the pathogenetic impact of the abnormal gut microbiota on the development of female reproductive system diseases. A dynamic imbalance between the altered microbiota and the macroorganism has many manifestations as hormonal homeostatic disorders, one of which is dysbiosis-induced hypoestrogenemia. Using endometrioid heterotopia as an example, the authors trace the possibility of its progression and malignancy due to the occurrence of primary breakdown of the PTEN tumor-suppressor gene with subsequent genetic abnormalities in the ARID1A and TP53 genes. PTEN mutation in both endometriosis itself and its malignancy indicates that dysbiosis-induced hypoestrogenemia may be implicated in the pathogenesis of endometriosis. Thus, the relationship between female reproductive system diseases and gut microbiome disorders may be more significant; and the possibility of correcting the gut microbiota with prebiotics and probiotics opens new horizons not only in the prevention, but also in the treatment of many gynecological diseases associated with hormone disorders.
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Affiliation(s)
- R V Ukrainets
- Smolensk Regional Institute of Pathology, Ministry of Health of Russia, Smolensk, Russia
| | - Yu S Korneva
- Smolensk State Medical University, Ministry of Health of Russia, Smolensk, Russia; Smolensk Regional Institute of Pathology, Ministry of Health of Russia, Smolensk, Russia
| | - A E Dorosevich
- Smolensk State Medical University, Ministry of Health of Russia, Smolensk, Russia; Smolensk Regional Institute of Pathology, Ministry of Health of Russia, Smolensk, Russia
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15
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Genetic Characterization of Endometriosis Patients: Review of the Literature and a Prospective Cohort Study on a Mediterranean Population. Int J Mol Sci 2020; 21:ijms21051765. [PMID: 32143537 PMCID: PMC7084255 DOI: 10.3390/ijms21051765] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/20/2020] [Accepted: 03/02/2020] [Indexed: 12/21/2022] Open
Abstract
The pathogenesis of endometriosis is unknown, but some evidence supports a genetic predisposition. The purpose of this study was to evaluate the recent literature on the genetic characterization of women affected by endometriosis and to evaluate the influence of polymorphisms of the wingless-type mammalian mouse tumour virus integration site family member 4 (WNT4), vezatin (VEZT), and follicle stimulating hormone beta polypeptide (FSHB) genes, already known to be involved in molecular mechanisms associated with the proliferation and development of endometriotic lesions in the Sardinian population. Materials and Methods: In order to provide a comprehensive and systematic tool for those approaching the genetics of endometriosis, the most cited review, observational, cohort and case-control studies that have evaluated the genetics of endometriosis in the last 20 years were collected. Moreover, 72 women were recruited for a molecular biology analysis of whole-blood samples—41 patients affected by symptomatic endometriosis and 31 controls. The molecular typing of three single nucleotide polymorphisms (SNPs) was evaluated in patients and controls: rs7521902, rs10859871 and rs11031006, mapped respectively in the WNT4, VEZT and FSHB genes. In this work, the frequency of alleles, genotypes and haplotypes of these SNPs in Sardinian women is described. Results: From the initial search, a total of 73 articles were chosen. An analysis of the literature showed that in endometriosis pathogenesis, the contribution of genetics has been well supported by many studies. The frequency of genotypes observed in the groups of the study population of 72 women was globally coherent with the law of the Hardy–Weinberg equilibrium. For the SNP rs11031006 (FSHB), the endometriosis group did not show an increase in genotypic or allelic frequency due to this polymorphism compared to the control group (p = 0.9999, odds ratio (OR) = 0.000, 95% confidence interval (CI), 0.000–15.000 and p = 0.731, OR = 1639, 95% CI, 0.39–683, respectively, for the heterozygous genotype and the polymorphic minor allele). For the SNP rs10859871 (VEZT), we found a significant difference in the frequency of the homozygous genotype in the control group compared to the affected women (p = 0.0111, OR = 0.0602, 95% CI, 0.005–0.501). For the SNP rs7521902 (WNT4), no increase in genotypic or allelic frequency between the two groups was shown (p = 0.3088, OR = 0.4133, 95% CI, 0.10–1.8 and p = 0.3297, OR = 2257, 95% CI, 0.55–914, respectively, for the heterozygous genotype and the polymorphic minor allele). Conclusion: An analysis of recent publications on the genetics of endometriosis showed a discrepancy in the results obtained in different populations. In the Sardinian population, the results obtained do not show a significant association between the investigated variants of the genes and a greater risk of developing endometriosis, although several other studies in the literature have shown the opposite. Anyway, the data underline the importance of evaluating genetic variants in different populations. In fact, in different ethnic groups, it is possible that specific risk alleles could act differently in the pathogenesis of the disease.
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16
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Deiana D, Gessa S, Anardu M, Daniilidis A, Nappi L, D'Alterio MN, Pontis A, Angioni S. Genetics of endometriosis: a comprehensive review. Gynecol Endocrinol 2019; 35:553-558. [PMID: 30909768 DOI: 10.1080/09513590.2019.1588244] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
This review aimed to critically evaluate the review, observational, cohort, and case-control studies performed so far in order to assess the association between endometriosis and genetics. The search strategies used included an online search of the MEDLINE database and a manual search of relevant publications and reviews. Additional reports were collected by systematically reviewing all references from the retrieved papers. Family studies have long suggested that genetic factors play a role in the etiology of endometriosis. Nevertheless, until now, studies on candidate genes have revealed inconsistent and contradictory evidence, leading to more questions rather than clear answers. It is possible that recent technological improvements in genetic evaluation could allow for a better understanding of the pathogenic mechanisms of endometriosis in the near future.
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Affiliation(s)
- Danilo Deiana
- a Department of Surgical Sciences, Institute of Gynaecology and Obstetrics , University of Cagliari , Cagliari , Italy
| | - Stefano Gessa
- b Genetic Laboratory, Forensics Institute , Azienda Ospedaliero Universitaria , Cagliari , Italy
| | - Michela Anardu
- a Department of Surgical Sciences, Institute of Gynaecology and Obstetrics , University of Cagliari , Cagliari , Italy
| | - Angelos Daniilidis
- c Department of Obstetrics and Gynecology, Hippokratio Hospital , Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Luigi Nappi
- d Department of Medical and Surgical Sciences, Institute of Obstetrics and Gynaecology , University of Foggia , Foggia , Italy
| | - Maurizio N D'Alterio
- a Department of Surgical Sciences, Institute of Gynaecology and Obstetrics , University of Cagliari , Cagliari , Italy
| | - Alessandro Pontis
- e Division of Gynecology and Obstetrics, Ospedale S. Francesco , Nuoro , Italy
| | - Stefano Angioni
- a Department of Surgical Sciences, Institute of Gynaecology and Obstetrics , University of Cagliari , Cagliari , Italy
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17
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Vassilopoulou L, Matalliotakis M, Zervou MI, Matalliotaki C, Krithinakis K, Matalliotakis I, Spandidos DA, Goulielmos GN. Defining the genetic profile of endometriosis. Exp Ther Med 2019; 17:3267-3281. [PMID: 30988702 PMCID: PMC6447774 DOI: 10.3892/etm.2019.7346] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/01/2019] [Indexed: 01/20/2023] Open
Abstract
Endometriosis is a pathological condition which has been extensively studied, since its pathophysiology stems from a broad spectrum of environmental influences and genetic factors. Familial studies aim at defining inheritance trends, while linkage analysis studies focus on the identification of genetic sites related to endometriosis susceptibility. Genetic association studies take into account candidate genes and single nucleotide polymorphisms, and hence target at unraveling the association between disease severity and genetic variation. The common goal of various types of studies is, through genetic mapping methods, the timely identification of therapeutic strategies for disease symptoms, including pelvic pain and infertility, as well as efficient counselling. While genome-wide association studies (GWAS) play a primary role in depicting genetic contributions to disease development, they entail a certain bias as regards the case-control nature of their design and the reproducibility of the results. Nevertheless, genetic-oriented studies and the implementation of the results through clinical tests, hold a considerable advantage in proper disease management. In this review article, we present information about gene-gene and gene-environment interactions involved in endometriosis and discuss the effectiveness of GWAS in identitying novel potential therapeutic targets in an attempt to develop novel therapeutic strategies for a better management and treatment of patients with endometriosis.
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Affiliation(s)
- Loukia Vassilopoulou
- Laboratory of Forensic Sciences and Toxicology, School of Medicine, University of Crete, Heraklion 71003, Greece
| | - Michail Matalliotakis
- Third Department of Obstetrics and Gynecology, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.,Department of Obstetrics and Gynecology, Venizeleio and Pananio General Hospital of Heraklion, Heraklion 71409, Greece
| | - Maria I Zervou
- Section of Molecular Pathology and Human Genetics, Department of Internal Medicine, School of Medicine, University of Crete, Heraklion 71003, Greece
| | - Charoula Matalliotaki
- Third Department of Obstetrics and Gynecology, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.,Department of Obstetrics and Gynecology, Venizeleio and Pananio General Hospital of Heraklion, Heraklion 71409, Greece
| | - Konstantinos Krithinakis
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, Heraklion 71500, Greece
| | - Ioannis Matalliotakis
- Department of Obstetrics and Gynecology, Venizeleio and Pananio General Hospital of Heraklion, Heraklion 71409, Greece
| | - Demetrios A Spandidos
- Laboratory of Clinical Virology, School of Medicine, University of Crete, Heraklion 71003, Greece
| | - George N Goulielmos
- Section of Molecular Pathology and Human Genetics, Department of Internal Medicine, School of Medicine, University of Crete, Heraklion 71003, Greece
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18
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Kajiyama H, Suzuki S, Yoshihara M, Tamauchi S, Yoshikawa N, Niimi K, Shibata K, Kikkawa F. Endometriosis and cancer. Free Radic Biol Med 2019; 133:186-192. [PMID: 30562557 DOI: 10.1016/j.freeradbiomed.2018.12.015] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 12/13/2018] [Accepted: 12/14/2018] [Indexed: 12/21/2022]
Abstract
Endometriosis, characterized by the presence of extra-uterine endometrium, is a common gynecologic disorder in reproductive-age women. Although the detailed molecular mechanism of etiology remains unelucidated, recent studies have gradually revealed both genetic and epigenetic backgrounds of the development of endometriosis. In clinical practice, endometriosis has been recognized as a precursor lesion of several types of malignancies and endometriosis-associated carcinoma. An imbalance between reactive oxygen species and local antioxidants has been reported to contribute to the development of endometriosis-associated carcinoma as well as the pathophysiology of this disease through a systemic inflammatory response in the peritoneal cavity. This review mainly presents an epidemiology, possible etiology of endometriosis, precursor lesions, molecular features, and the association between the microenvironmental accumulations of oxidative stress in endometriosis-associated ovarian cancer progression.
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Affiliation(s)
- Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Japan.
| | - Shiro Suzuki
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Japan
| | - Masato Yoshihara
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Japan
| | - Satoshi Tamauchi
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Japan
| | - Nobuhisa Yoshikawa
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Japan
| | - Kaoru Niimi
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Japan
| | - Kiyosumi Shibata
- Department of Obstetrics and Gynecology, Bantane Hospital, Fujita Health University, Japan
| | - Fumitaka Kikkawa
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Japan
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19
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Herreros-Villanueva M, Chen CC, Tsai EM, Er TK. Endometriosis-associated ovarian cancer: What have we learned so far? Clin Chim Acta 2019; 493:63-72. [PMID: 30776361 DOI: 10.1016/j.cca.2019.02.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/13/2019] [Accepted: 02/14/2019] [Indexed: 02/07/2023]
Abstract
Endometriosis is defined as the presence of ectopic endometrial tissue outside of the uterine cavity, most commonly in the ovaries and peritoneum. It is a complex disease that is influenced by multiple factors. It is also a common gynecological disorder and affects approximately 10-15% of all women of reproductive age. Recent molecular and pathological studies indicate that endometriosis may serve as a precursor of ovarian cancer (endometriosis-associated ovarian cancer, EAOC), particularly endometrioid and clear cell ovarian cancers. Although histological and epidemiological studies have demonstrated that endometriosis has a malignant potential, the molecular mechanism that underlies the malignant transformation of endometriosis is still controversial, and the precise mechanism of carcinogenesis must be fully elucidated. Currently, the development and improvement of a new sequencing technology, next-generation sequencing (NGS), has been increasingly relevant in cancer genomics research. Recently, NGS has also been utilized in clinical oncology to advance the personalized treatment of cancer. In addition, the sensitivity, speed, and cost make NGS a highly attractive platform compared to other sequencing modalities. For this reason, NGS may lead to the identification of driver mutations and underlying pathways associated with EAOC. Here, we present an overview of the molecular pathways that have led to the current opinions on the relationship between endometriosis and ovarian cancer.
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Affiliation(s)
- M Herreros-Villanueva
- Department of Gastroenterology, Hospital Donostia/Instituto Biodonostia, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Universidad del País Vasco UPV/EHU, San Sebastián, Spain
| | - Chih-Chieh Chen
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung, Taiwan; Rapid Screening Research Center for Toxicology and Biomedicine, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Eing-Mei Tsai
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Tze-Kiong Er
- Division of Laboratory Medicine, Asia University Hospital, Asia University, Taichung, Taiwan; Deparment of Food Nutrition and Health Biotechnology, Asia University, Taichung, Taiwan; Deparment of Biotechnology, Asia University, Taichung, Taiwan; Deparment of Nursing, Asia University, Taichung, Taiwan.
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20
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Guo S. Cancer driver mutations in endometriosis: Variations on the major theme of fibrogenesis. Reprod Med Biol 2018; 17:369-397. [PMID: 30377392 PMCID: PMC6194252 DOI: 10.1002/rmb2.12221] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/03/2018] [Accepted: 06/24/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND One recent study reports cancer driver mutations in deep endometriosis, but its biological/clinical significance remains unclear. Since the natural history of endometriosis is essentially gradual progression toward fibrosis, it is thus hypothesized that the six driver genes reported to be mutated in endometriosis (the RP set) may play important roles in fibrogenesis but not necessarily malignant transformation. METHODS Extensive PubMed search to see whether RP and another set of driver genes not yet reported (NR) to be mutated in endometriosis have any roles in fibrogenesis. All studies reporting on the role of fibrogenesis of the genes in both RP and NR sets were retrieved and evaluated in this review. RESULTS All six RP genes were involved in various aspects of fibrogenesis as compared with only three NR genes. These nine genes can be anchored in networks linking with their upstream and downstream genes that are known to be aberrantly expressed in endometriosis, piecing together seemingly unrelated findings. CONCLUSIONS Given that somatic driver mutations can and do occur frequently in physiologically normal tissues, it is argued that these mutations in endometriosis are not necessarily synonymous with malignancy or premalignancy, but the result of enormous pressure for fibrogenesis.
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Affiliation(s)
- Sun‐Wei Guo
- Shanghai Obstetrics and Gynecology HospitalFudan UniversityShanghaiChina
- Shanghai Key Laboratory of Female Reproductive Endocrine‐Related DiseasesShanghaiChina
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21
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Endometriosis Malignant Transformation: Epigenetics as a Probable Mechanism in Ovarian Tumorigenesis. Int J Genomics 2018; 2018:1465348. [PMID: 29780815 PMCID: PMC5892233 DOI: 10.1155/2018/1465348] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 03/01/2018] [Indexed: 12/12/2022] Open
Abstract
Endometriosis, defined as the presence of ectopic endometrial glands and stroma outside the uterine cavity, is a chronic, hormone-dependent gynecologic disease affecting millions of women across the world, with symptoms including chronic pelvic pain, dysmenorrhea, dyspareunia, dysuria, and subfertility. In addition, there is well-established evidence that, although endometriosis is considered benign, it is associated with an increased risk of malignant transformation, with the involvement of various mechanisms of development. More and more evidence reveals an important contribution of epigenetic modification not only in endometriosis but also in mechanisms of endometriosis malignant transformation, including DNA methylation and demethylation, histone modifications, and miRNA aberrant expressions. In this present review, we mainly summarize the research progress about the current knowledge regarding the epigenetic modifications of the relations between endometriosis malignant transformation and ovarian cancer in an effort to identify some risk factors probably associated with ectopic endometrium transformation.
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22
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Vitale SG, Capriglione S, Peterlunger I, La Rosa VL, Vitagliano A, Noventa M, Valenti G, Sapia F, Angioli R, Lopez S, Sarpietro G, Rossetti D, Zito G. The Role of Oxidative Stress and Membrane Transport Systems during Endometriosis: A Fresh Look at a Busy Corner. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:7924021. [PMID: 29743986 PMCID: PMC5883985 DOI: 10.1155/2018/7924021] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 02/18/2018] [Indexed: 11/17/2022]
Abstract
Endometriosis is a condition characterized by the presence of endometrial tissue outside the uterine cavity, leading to a chronic inflammatory reaction. It is one of the most widespread gynecological diseases with a 10-15% prevalence in the general female population, rising up to 30-45% in patients with infertility. Although it was first described in 1860, its etiology and pathogenesis are still unclear. It is now accepted that inflammation plays a central role in the development and progression of endometriosis. In particular, it is marked by an inflammatory process associated with the overproduction of an array of inflammatory mediators such as prostaglandins, metalloproteinases, cytokines, and chemokines. In addition, the growth and adhesion of endometrial cells in the peritoneal cavity due to reactive oxygen species (ROS) and free radicals lead to disease onset, its ensuing symptoms-among which pain and infertility. The aim of our review is to evaluate the role of oxidative stress and ROS in the pathogenesis of endometriosis and the efficacy of antioxidant therapy in the treatment and mitigation of its symptoms.
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Affiliation(s)
- Salvatore Giovanni Vitale
- Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood “G. Barresi”, University of Messina, Via Consolare Valeria 1, 98125 Messina, Italy
| | - Stella Capriglione
- Department of Obstetrics and Gynecology, Campus Bio-Medico University of Rome, Via Álvaro del Portillo 21, 00128 Rome, Italy
| | - Isabel Peterlunger
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Ospedale di Cattinara, Strada di Fiume 447, 34149 Trieste, Italy
| | - Valentina Lucia La Rosa
- Unit of Psychodiagnostics and Clinical Psychology, University of Catania, Via Santa Sofia 78, 95124 Catania, Italy
| | - Amerigo Vitagliano
- Department of Woman and Child Health, University of Padua, Via Giustiniani 3, 35128 Padua, Italy
| | - Marco Noventa
- Department of Woman and Child Health, University of Padua, Via Giustiniani 3, 35128 Padua, Italy
| | - Gaetano Valenti
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via Santa Sofia 78, 95124 Catania, Italy
| | - Fabrizio Sapia
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via Santa Sofia 78, 95124 Catania, Italy
| | - Roberto Angioli
- Department of Obstetrics and Gynecology, Campus Bio-Medico University of Rome, Via Álvaro del Portillo 21, 00128 Rome, Italy
| | - Salvatore Lopez
- Department of Obstetrics and Gynecology, Campus Bio-Medico University of Rome, Via Álvaro del Portillo 21, 00128 Rome, Italy
| | - Giuseppe Sarpietro
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via Santa Sofia 78, 95124 Catania, Italy
| | - Diego Rossetti
- Unit of Gynecology and Obstetrics, Desenzano del Garda Hospital, Section of Gavardo, Via A. Gosa 74, 25085 Gavardo, Italy
| | - Gabriella Zito
- Department of Obstetrics and Gynecology, Institute for Maternal and Child Health-IRCCS “Burlo Garofolo”, Via dell'Istria 65/1, 34137 Trieste, Italy
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23
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Ito F, Yamada Y, Shigemitsu A, Akinishi M, Kaniwa H, Miyake R, Yamanaka S, Kobayashi H. Role of Oxidative Stress in Epigenetic Modification in Endometriosis. Reprod Sci 2017; 24:1493-1502. [PMID: 28443478 DOI: 10.1177/1933719117704909] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Aberrant DNA methylation and histone modification are associated with an increased risk of reproductive disorders such as endometriosis. However, a cause-effect relationship between epigenetic mechanisms and endometriosis development has not been fully determined. This review provides current information based on oxidative stress in epigenetic modification in endometriosis. This article reviews the English-language literature on epigenetics, DNA methylation, histone modification, and oxidative stress associated with endometriosis in an effort to identify epigenetic modification that causes a predisposition to endometriosis. Oxidative stress, secondary to the influx of hemoglobin, heme, and iron during retrograde menstruation, is involved in the expression of CpG demethylases, ten-eleven translocation, and jumonji (JMJ). Ten-eleven translocation and JMJ recognize a wide range of endogenous DNA methyltransferases (DNMTs). The increased expression levels of DNMTs may be involved in the subsequent downregulation of the decidualization-related genes. This review supports the hypothesis that there are at least 2 distinct phases of epigenetic modification in endometriosis: the initial wave of iron-induced oxidative stress would be followed by the second big wave of epigenetic modulation of endometriosis susceptibility genes. We summarize the recent advances in our understanding of the underlying epigenetic mechanisms focusing on oxidative stress in endometriosis.
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Affiliation(s)
- Fuminori Ito
- 1 Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Yuki Yamada
- 1 Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Aiko Shigemitsu
- 1 Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Mika Akinishi
- 1 Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Hiroko Kaniwa
- 1 Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Ryuta Miyake
- 1 Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Shoichiro Yamanaka
- 1 Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Hiroshi Kobayashi
- 1 Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
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24
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Machida H, Maeda M, Cahoon SS, Scannell CA, Garcia-Sayre J, Roman LD, Matsuo K. Endometrial cancer arising in adenomyosis versus endometrial cancer coexisting with adenomyosis: are these two different entities? Arch Gynecol Obstet 2017; 295:1459-1468. [PMID: 28444512 DOI: 10.1007/s00404-017-4375-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 04/18/2017] [Indexed: 12/30/2022]
Abstract
PURPOSE While adenomyosis is one of the most common benign histologic findings in hysterectomy specimens of endometrial cancer, demographics of endometrial cancer arising in adenomyosis (EC-AIA) has not been well elucidated. The aim of this study is to evaluate histopathological findings and disease-free survival (DFS) of EC-AIA in comparison to endometrial cancer coexisting with adenomyosis (EC-A). METHODS EC-AIA cases were identified via a systematic literature search (n = 46). EC-A cases were identified from a historical cohort that underwent hysterectomy-based surgical staging in two institutions (n = 350). Statistical comparisons of the two groups were based on univariate and multivariate analyses. RESULTS The EC-AIA group was significantly older than the EC-A group (58.9 versus 53.8, p = 0.002). As to tumor characteristics, 63.6% of EC-AIA cases reported tumor within the myometrium without endometrial extension. The EC-AIA group was significantly associated with more non-endometrioid histology (23.9 versus 14.8%; p = 0.002) and deep myometrial tumor invasion (51.6 versus 19.4%; p < 0.001) than EC-A. Tumor grade, stage, and nodal metastasis risk were similar (all, p > 0.05). In a univariate analysis, the EC-AIA group had a significantly decreased DFS compared to EC-A (5-year rates, 72.2 versus 85.5%, p = 0.001). After controlling for age, histology, tumor grade, and stage, EC-AIA remained an independent prognostic factor associated with decreased DFS compared to EC-A (adjusted-hazard ratio 2.87, 95% confidence interval 1.44-5.70, p = 0.031). CONCLUSION Our study demonstrated that EC-AIA has distinct tumor characteristics and a poorer survival outcome compared to EC-A. This suggests a benefit of recognition of this unique entity as an aggressive variant of endometrial cancer.
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Affiliation(s)
- Hiroko Machida
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Los Angeles County Medical Center, University of Southern California, 2020 Zonal Avenue, IRD 520, Los Angeles, CA, 90089, USA
| | - Midori Maeda
- National Center for Global Health and Medicine, Tokyo, Japan
| | - Sigita S Cahoon
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Los Angeles County Medical Center, University of Southern California, 2020 Zonal Avenue, IRD 520, Los Angeles, CA, 90089, USA
| | | | - Jocelyn Garcia-Sayre
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Los Angeles County Medical Center, University of Southern California, 2020 Zonal Avenue, IRD 520, Los Angeles, CA, 90089, USA
| | - Lynda D Roman
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Los Angeles County Medical Center, University of Southern California, 2020 Zonal Avenue, IRD 520, Los Angeles, CA, 90089, USA.,Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Koji Matsuo
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Los Angeles County Medical Center, University of Southern California, 2020 Zonal Avenue, IRD 520, Los Angeles, CA, 90089, USA. .,Norris Comprehensive Cancer Center, Los Angeles, CA, USA.
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25
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Wada H, Matsuda K, Akazawa Y, Yamaguchi Y, Miura S, Ueki N, Kinoshita A, Yoshiura KI, Kondo H, Ito M, Nagayasu T, Nakashima M. Expression of Somatostatin Receptor Type 2A and PTEN in Neuroendocrine Neoplasms Is Associated with Tumor Grade but Not with Site of Origin. Endocr Pathol 2016; 27:179-87. [PMID: 27256098 DOI: 10.1007/s12022-016-9436-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Neuroendocrine neoplasms (NENs) are derived from endocrine cells in various organs and share common morphological features. This study aimed to clarify whether NENs of different organs are comparable at the molecular pathologic level. We retrospectively collected 99 cases of NENs from gastro-entero-pancreatic, lung, and other organs and reclassified these according to identical criteria. Grade, site, and molecular expression profile including NE markers, Ki-67, p53, somatostatin receptor type 2A (SSTR2A), and phosphatase and tensin homolog (PTEN) were compared. PTEN immunoreactivity was also compared with genomic copy number by fluorescence in situ hybridization (FISH) and droplet digital polymerase chain reaction (ddPCR). No significant differences were observed in the immunoreactivities of NE markers, p53, SSTR2A, or PTEN expression in NENs between the different organ sites. PTEN and p53 functional inactivation along with the loss of membranous SSTR2A expression appeared to be commonly involved in high-grade NEN. FISH results were significantly correlated with the level of PTEN immunoreactivity and with the findings of ddPCR analyses. The demonstration that these tumors are comparable at the molecular level will likely contribute to the broadening of therapeutic options such as the use of somatostatin analogues and mTOR inhibitors against NENs regardless of the affected organ, whereas molecular characterization of tumor grade will be useful for determining treatment strategy.
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Affiliation(s)
- Hideo Wada
- Division of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852 8501, Japan
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan
| | - Katsuya Matsuda
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan
| | - Yuko Akazawa
- Department of Gastroenterology and Hepatology, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852 8501, Japan
| | - Yuka Yamaguchi
- Medical Student Research Programme, Nagasaki University School of Medicine, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan
| | - Shiro Miura
- Tissue and Histopathology Section, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan
| | - Nozomi Ueki
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan
| | - Akira Kinoshita
- Department of Human Genetics, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan
| | - Koh-Ichiro Yoshiura
- Department of Human Genetics, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan
| | - Hisayoshi Kondo
- Biostatic section, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan
| | - Masahiro Ito
- Department of Pathology, National Hospital Organization Nagasaki Medical Center, 2-1001-1 Kubara, Nagasaki, 856 8562, Japan
| | - Takeshi Nagayasu
- Division of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852 8501, Japan
| | - Masahiro Nakashima
- Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan.
- Tissue and Histopathology Section, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852 8523, Japan.
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26
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Smith IN, Briggs JM. Structural mutation analysis of PTEN and its genotype-phenotype correlations in endometriosis and cancer. Proteins 2016; 84:1625-1643. [PMID: 27481051 DOI: 10.1002/prot.25105] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 06/17/2016] [Accepted: 07/05/2016] [Indexed: 12/19/2022]
Abstract
The phosphatase and tensin homolog deleted on chromosome ten (PTEN) gene encodes a tumor suppressor phosphatase that has recently been found to be frequently mutated in patients with endometriosis, endometrial cancer and ovarian cancer. Here, we present the first computational analysis of 13 somatic missense PTEN mutations associated with these phenotypes. We found that a majority of the mutations are associated in conserved positions within the active site and are clustered within the signature motif, which contain residues that play a crucial role in loop conformation and are essential for catalysis. In silico analyses were utilized to identify the putative effects of these mutations. In addition, coarse-grained models of both wild-type (WT) PTEN and mutants were constructed using elastic network models to explore the interplay of the structural and global dynamic effects that the mutations have on the relationship between genotype and phenotype. The effects of the mutations reveal that the local structure and interactions affect polarity, protein structure stability, electrostatic surface potential, and global dynamics of the protein. Our results offer new insight into the role in which PTEN missense mutations contribute to the molecular mechanism and genotypic-phenotypic correlation of endometriosis, endometrial cancer, and ovarian cancer. Proteins 2016; 84:1625-1643. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Iris N Smith
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, 77204-5001
| | - James M Briggs
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, 77204-5001.
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27
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Zondervan KT, Rahmioglu N, Morris AP, Nyholt DR, Montgomery GW, Becker CM, Missmer SA. Beyond Endometriosis Genome-Wide Association Study: From Genomics to Phenomics to the Patient. Semin Reprod Med 2016; 34:242-54. [PMID: 27513026 PMCID: PMC5693320 DOI: 10.1055/s-0036-1585408] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Endometriosis is a heritable, complex chronic inflammatory disease, for which much of the causal pathogenic mechanism remains unknown. Genome-wide association studies (GWAS) to date have identified 12 single nucleotide polymorphisms at 10 independent genetic loci associated with endometriosis. Most of these were more strongly associated with revised American Fertility Society stage III/IV, rather than stage I/II. The loci are almost all located in intergenic regions that are known to play a role in the regulation of expression of target genes yet to be identified. To identify the target genes and pathways perturbed by the implicated variants, studies are required involving functional genomic annotation of the surrounding chromosomal regions, in terms of transcription factor binding, epigenetic modification (e.g., DNA methylation and histone modification) sites, as well as their correlation with RNA transcription. These studies need to be conducted in tissue types relevant to endometriosis-in particular, endometrium. In addition, to allow biologically and clinically relevant interpretation of molecular profiling data, they need to be combined and correlated with detailed, systematically collected phenotypic information (surgical and clinical). The WERF Endometriosis Phenome and Biobanking Harmonisation Project is a global standardization initiative that has produced consensus data and sample collection protocols for endometriosis research. These now pave the way for collaborative studies integrating phenomic with genomic data, to identify informative subtypes of endometriosis that will enhance understanding of the pathogenic mechanisms of the disease and discovery of novel, targeted treatments.
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Affiliation(s)
- Krina T. Zondervan
- Endometriosis CaRe Centre, Nuffield Dept of Obstetrics & Gynaecology, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, UK
| | - Nilufer Rahmioglu
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, UK
| | - Andrew P. Morris
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, UK
- Dept of Biostatistics, Department of Biostatistics, Faculty of Health & Life Sciences, University of Liverpool, 1st floor Duncan Building, Daulby Street, Liverpool, UK
| | - Dale R. Nyholt
- Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology, Brisbane, Australia
| | - Grant W. Montgomery
- QIMR Berghofer Medical Research Institute, 300 Herston Rd, Brisbane, Australia
| | - Christian M. Becker
- Endometriosis CaRe Centre, Nuffield Dept of Obstetrics & Gynaecology, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Stacey A. Missmer
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
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28
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KOUKOURA OURANIA, SIFAKIS STAVROS, SPANDIDOS DEMETRIOSA. DNA methylation in endometriosis (Review). Mol Med Rep 2016; 13:2939-48. [PMID: 26934855 PMCID: PMC4805102 DOI: 10.3892/mmr.2016.4925] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 02/22/2016] [Indexed: 12/01/2022] Open
Abstract
Endometriosis is defined by the presence and growth of functional endometrial tissue, outside the uterine cavity, primarily in the ovaries, pelvic peritoneum and rectovaginal septum. Although it is a benign disease, it presents with malignant characteristics, such as invasion to surrounding tissues, metastasis to distant locations and recurrence following treatment. Accumulating evidence suggests that various epigenetic aberrations may play an essential role in the pathogenesis of endometriosis. Aberrant DNA methylation represents a possible mechanism repsonsible for this disease, linking gene expression alterations observed in endometriosis with hormonal and environmental factors. Several lines of evidence indicate that endometriosis may partially be due to selective epigenetic deregulations influenced by extrinsic factors. Previous studies have shed light into the epigenetic component of endometriosis, reporting variations in the epigenetic patterns of genes known to be involved in the aberrant hormonal, immunologic and inflammatory status of endometriosis. Although recent studies, utilizing advanced molecular techniques, have allowed us to further elucidate the possible association of DNA methylation with altered gene expression, whether these molecular changes represent the cause or merely the consequence of the disease is a question which remains to be answered. This review provides an overview of the current literature on the role of DNA methylation in the pathophysiology and malignant evolution of endometriosis. We also provide insight into the mechanisms through which DNA methylation-modifying agents may be the next step in the research of the pharmaceutical treatment of endometriosis.
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Affiliation(s)
- OURANIA KOUKOURA
- Department of Obstetrics and Gynecology, University Hospital of Larissa, Larissa 41500, Greece
| | - STAVROS SIFAKIS
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, Heraklion 71003, Greece
| | - DEMETRIOS A. SPANDIDOS
- Laboratory of Clinical Virology, University of Crete Medical School, Heraklion 71409, Greece
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29
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Gounaris I, Brenton JD. Molecular pathogenesis of ovarian clear cell carcinoma. Future Oncol 2016; 11:1389-405. [PMID: 25952785 DOI: 10.2217/fon.15.45] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Ovarian clear cell carcinoma is a distinct subtype of epithelial ovarian cancer, characterized by an association with endometriosis, glycogen accumulation and resistance to chemotherapy. Key driver events, including ARID1A mutations and HNF1B overexpression, have been recently identified and their functional characterization is ongoing. Additionally, the role of glycogen in promoting the malignant phenotype is coming under scrutiny. Appreciation of the notion that ovarian clear cell carcinoma is essentially an ectopic uterine cancer will hopefully lead to improved animal models of the disease, in turn paving the way for effective treatments.
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Affiliation(s)
- Ioannis Gounaris
- Cancer Research UK Cambridge Institute, Robinson Way, Cambridge, CB2 0RE, UK
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30
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Krawczyk N, Banys-Paluchowski M, Schmidt D, Ulrich U, Fehm T. Endometriosis-associated Malignancy. Geburtshilfe Frauenheilkd 2016; 76:176-181. [PMID: 26941451 PMCID: PMC4771509 DOI: 10.1055/s-0035-1558239] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 09/13/2015] [Accepted: 10/18/2015] [Indexed: 12/23/2022] Open
Abstract
Endometriosis is a common condition in women of reproductive age. According to several epidemiological studies endometriosis may be associated with increased risk of various malignancies. However, endometriosis-associated malignancy (EAM) is defined by certain histological criteria. About 80 % of EAM have been found in the ovary, whereas 20 % are localized in extragonadal sites like intestine, rectovaginal septum, abdominal wall, pleura and others. Some authors suggest that EAM arise from atypical endometriosis as an intermediate lesion between endometriosis and cancer. Moreover, a number of genetic alterations, like loss of heterozygosity (LOH), PTEN, ARID1 A and p53 mutations have been found in both endometriosis and EAM. Endometriosis-associated ovarian cancer (EAOC) is mostly a well or intermediately differentiated tumor of endometrioid or clear cell histological sub-type. Women affected by EAOC are on average five to ten years younger than non-EAOC patients; in most of the cases EAOC is a low stage disease with favorable clinical outcome. Since EAM is a rare condition systematic data on EAM are still missing. A systematic retrospective study on endometriosis-associated malignancies (EAM study) is currently being conducted by the Endometriosis Research Foundation together with the study groups on ovarian and uterine tumors of the working group for gynecological oncology (AGO) (gyn@mlk-berlin.de).
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Affiliation(s)
- N. Krawczyk
- Department of Obstetrics and Gynecology, University of Düsseldorf, Düsseldorf
| | - M. Banys-Paluchowski
- Department of Obstetrics and Gynecology, University of Düsseldorf, Düsseldorf
- Department of Obstetrics and Gynecology, Marienkrankenhaus Hamburg, Hamburg
| | - D. Schmidt
- Synlab MVZ Pathologie Mannheim GmbH, A2, 2, Mannheim
| | - U. Ulrich
- Department of Obstetrics and Gynecology, Martin Luther Hospital, Berlin
| | - T. Fehm
- Department of Obstetrics and Gynecology, University of Düsseldorf, Düsseldorf
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31
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Abstract
Endometriosis is a heritable complex disorder that is influenced by multiple genetic and environmental factors. Identification of these genetic factors will aid a better understanding of the underlying biology of the disease. In this article, we describe different methods of studying genetic variation of endometriosis, summarize results from genetic studies performed to date and provide recommendations for future studies to uncover additional factors contributing to the heritable component of endometriosis.
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Affiliation(s)
- Nilufer Rahmioglu
- Wellcome Trust Center for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Grant W Montgomery
- Molecular Epidemiology, QIMR Berghofer Medical Research Institute, Brisbane, QLD 4029, Australia
| | - Krina T Zondervan
- Wellcome Trust Center for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK.,Nuffield Department of Obstetrics & Gynaecology, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK
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32
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Abstract
Endometriosis may be a precursor lesion for some epithelial ovarian cancers (EOCs), especially those of clear cell and endometrioid histologies. The causality of this relationship remains controversial and in need of further investigation because the high prevalence of endometriosis and high mortality of EOC carry significant public health implications if the association is real. Endometriosis-associated ovarian cancer (EAOC) often presents at an earlier stage and with lower-grade lesions than non-EAOC. After surgical resection, these patients also tend to have less residual disease than do patients with non-EAOC. Survival has been reported to be better for women with EAOC. The tumor suppression gene, ARID1A, is frequently disrupted in EAOC. The ARID1A mutation has been reported in preneoplastic lesions and may be an early marker in the transformation of endometriosis into cancer. The current evidence in respect to critical molecular pathways underscores the need to investigate possible role of targeted therapies in the treatment of EAOC.
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33
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Pavone ME, Lyttle BM. Endometriosis and ovarian cancer: links, risks, and challenges faced. Int J Womens Health 2015; 7:663-72. [PMID: 26170722 PMCID: PMC4494101 DOI: 10.2147/ijwh.s66824] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Endometriosis is a benign gynecological condition characterized by specific histological, molecular, and clinical findings. It affects 5%-10% of premenopausal women, is a cause of infertility, and has been implicated as a precursor for certain types of ovarian cancer. Advances in technology, primarily the ability for whole genome sequencing, have led to the discovery of new mutations and a better understanding of the function of previously identified genes and pathways associated with endometriosis associated ovarian cancers (EAOCs) that include PTEN, CTNNB1 (β-catenin), KRAS, microsatellite instability, ARID1A, and the unique role of inflammation in the development of EAOC. Clinically, EAOCs are associated with a younger age at diagnosis, lower stage and grade of tumor, and are more likely to occur in premenopausal women when compared with other ovarian cancers. A shift from screening strategies adopted to prevent EAOCs has resulted in new recommendations for clinical practice by national and international governing bodies. In this paper, we review the common histologic and molecular characteristics of endometriosis and ovarian cancer, risks associated with EAOCs, clinical challenges and give recommendations for providers.
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Affiliation(s)
- Mary Ellen Pavone
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Brianna M Lyttle
- Department of Obstetrics and Gynecology, University of Massachusetts Medical School, Worcester, MA, USA
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34
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Sanchez AM, Viganò P, Somigliana E, Cioffi R, Panina-Bordignon P, Candiani M. The endometriotic tissue lining the internal surface of endometrioma: hormonal, genetic, epigenetic status, and gene expression profile. Reprod Sci 2015; 22:391-401. [PMID: 24700055 PMCID: PMC4812685 DOI: 10.1177/1933719114529374] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ovarian endometriomas are found in a consistent proportion of patients with endometriosis and are associated with a more severe form of the disease. The endometriotic tissue lining the inside of the endometrioma has been extensively studied over the years mostly for the need to compare the molecular and cellular characteristics of eutopic and ectopic endometria. Several aspects of hormonal regulation, response to local inflammation, carcinogenesis, and modifications of the local environment have been investigated in order to characterize also the processes associated with peritoneal endometriosis. In this review, we have summarized the current knowledge of pathophysiology of endometrioma, with a particular focus on the cellular components lining the internal surface of the cyst in order to provide a comprehensive overview of the hormonal, genetic, epigenetic, and gene expression profiles of this essential part of the cyst.
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Affiliation(s)
- Ana Maria Sanchez
- Division of Genetics and Cell Biology, Reproductive Sciences Laboratory, San Raffaele Scientific Institute, Milano, Italy
| | - Paola Viganò
- Obstetrics and Gynecology Unit, San Raffaele Scientific Institute, Milano, Italy
| | - Edgardo Somigliana
- Department of Obstetrics, Gynecology and Neonatology, Fondazione Cà Granda, Ospedale Maggiore Policlinico, Milano, Italy
| | - Raffaella Cioffi
- Obstetrics and Gynecology Unit, San Raffaele Scientific Institute, Milano, Italy
| | - Paola Panina-Bordignon
- Division of Genetics and Cell Biology, Reproductive Sciences Laboratory, San Raffaele Scientific Institute, Milano, Italy
| | - Massimo Candiani
- Obstetrics and Gynecology Unit, San Raffaele Scientific Institute, Milano, Italy Obstetrics and Gynecology Unit, San Raffaele Scientific Institute, Vita-Salute University, Milano, Italy
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35
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Hu ZY, Tang LD, Zhou Q, Xiao L, Cao Y. Aberrant promoter hypermethylation of p16 gene in endometrial carcinoma. Tumour Biol 2015; 36:1487-91. [PMID: 25596080 DOI: 10.1007/s13277-014-2632-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 09/11/2014] [Indexed: 01/15/2023] Open
Abstract
Previous studies demonstrated that the loss of function of the p16INK4A gene is mainly caused by the hypermethylation of p16 gene promoter; however, whether or not it is associated with the incidence of endometrial carcinoma (EC) remains unclear. In the current study, we conducted a meta-analysis to investigate the effects of p16 gene promoter hypermethylation on the incidence of EC. Detailed research publications were searched from Embase, PubMed, and ISI Web of Knowledge for composition in English or Chinese. The pooled data were collected and analyzed by Review Manager 5.2. Odds ratios (ORs) were calculated and summarized respectively. Six eligible studies, including 261 patients were selected and analyzed. The pooled OR was 0.42, test for overall effect, Z = 10.19, P < 0.0001, indicating that p16 gene promoter hypermethylation was significantly correlated with the EC patients. The results of our study strongly suggest that p16 gene promoter hypermethylation is correlated with an increased risk of EC. P16 gene promoter hypermethylation plays a critical role in endometrial carcinogenesis.
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Affiliation(s)
- Zhuo-ying Hu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Chongqing Medical University, 1 Youyi Road, Chongqing, 400016, China
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36
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Yamashita Y. Ovarian cancer: new developments in clear cell carcinoma and hopes for targeted therapy. Jpn J Clin Oncol 2015; 45:405-7. [PMID: 25583423 PMCID: PMC4412138 DOI: 10.1093/jjco/hyu221] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 12/19/2014] [Indexed: 12/30/2022] Open
Abstract
Until recently, ovarian clear cell carcinoma was recognized by its unique morphology and unfavorable patient outcome primarily due to tumor chemoresistance. Recently, specific molecular characteristics of ovarian clear cell carcinoma, such as PI3CA mutation, ARID1a mutation and MET amplification, have been elucidated. In addition, an association between endometriosis and the tumor has also been a focus of research in recent years. The aim of this review is to discuss the specificity and importance of molecular changes and various intriguing points that are not solved until today. Finally, future aspects, including hopes for the development of novel therapies, are discussed.
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Affiliation(s)
- Yoriko Yamashita
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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37
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Králíčková M, Vetvicka V. Endometriosis and ovarian cancer. World J Clin Oncol 2014; 5:800-805. [PMID: 25493219 PMCID: PMC4259943 DOI: 10.5306/wjco.v5.i5.800] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 09/18/2014] [Accepted: 11/10/2014] [Indexed: 02/06/2023] Open
Abstract
Endometriosis is the leading cause of morbidity among premenopausal women and the complex pathogenesis of this disease remains controversial despite extensive research. This disease represents one of the most common gynecological problems. It is generally believed that this disease is due primarily to retrograde menstruation or transplantation of shed endometrium. Based on overwhelming data, ovarian endometrioma is considered a neoplastic process, since most endometriosis-associated ovarian carcinoma occur in the presence of atypical ovarian endometriosis. A study comparing patients with typical epithelial ovarian cancer with endometriosis-associated ovarian cancer demonstrated that the patients with the latter disease strongly differ in both biological and histological characteristics. The prevelance of this disease is not completely established, but approximately 15 percent of women suffer from this disease. In addition, we know about the possible links between endometriosis and cancer for almost 100 years. Despite clear evidence revealing that endometriosis increases ovarian cancer risks, it is possible that it may not affect disease progression after the appearance of ovarian cancer. However, despite clear evidence revealing that endometriosis increases ovarian cancer risk, our knowledge of the risk factors is far from established. In our review, we focused on the most recent approaches including possible biomarkers and genetic approaches.
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Guo C, Ren F, Wang D, Li Y, Liu K, Liu S, Chen P. RUNX3 is inactivated by promoter hypermethylation in malignant transformation of ovarian endometriosis. Oncol Rep 2014; 32:2580-8. [PMID: 25333219 DOI: 10.3892/or.2014.3524] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 08/01/2014] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to investigate the role of epigenetic inactivation of the runt-related transcription factor 3 gene (RUNX3) in the malignant transformation of ovarian endometriosis. Samples obtained by microdissection and scraping included 30 malignant ovarian endometriotic cyst tissues and 30 corresponding eutopic endometrium tissues from the endometriosis-associated ovarian carcinoma (EAOC) group, 19 benign ovarian endometriotic cyst tissues and 22 corresponding eutopic endometrium tissues from the endometriosis (EM) group and 22 normal eutopic endometrium tissues from the control endometrium (CE) group. RUNX3 methylation status was determined by methylation-specific PCR and bisulfite sequencing, while levels of RUNX3 and ERα protein expression were evaluated using immunohistochemistry. The percentage of RUNX3 methylation and negative RUNX3 protein expression in the malignant ovarian endometriotic cysts from the EAOC group was significantly higher than that in the benign ovarian endometriotic cysts from the EM group. The percentage of RUNX3 methylation and negative RUNX3 protein expression in the eutopic endometrium from the EAOC group was significantly higher than that in the EM and CE groups. An inverse correlation between positive RUNX3 protein expression and methylation was observed and a positive correlation was shown between RUNX3 methylation and ERα protein expression. In the malignant ovarian endometriotic cysts from the EAOC group, there was no significant correlation between methylation frequency of the RUNX3 gene and histological type. However, the percentage of RUNX3 gene methylation was significantly higher in the tissue samples from patients with surgical stage IC EAOC than the percentage in patients with stage IA and IB disease. These results suggest that RUNX3 inactivation by promoter hypermethylation plays a role in the progression of malignant transformation of ovarian EM and is closely related to estrogen metabolism. Negative protein expression and abnormal RUNX3 methylation in the eutopic endometrium could be used as diagnostic markers in patients with ovarian EM who may be at an increased risk of developing EAOC.
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Affiliation(s)
- Cuishan Guo
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Fang Ren
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Danbo Wang
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Yan Li
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Kuiran Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Shuang Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Peng Chen
- Department of Obstetrics and Gynecology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
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Ren F, Wang DB, Li T, Chen YH, Li Y. Identification of differentially methylated genes in the malignant transformation of ovarian endometriosis. J Ovarian Res 2014; 7:73. [PMID: 25298284 PMCID: PMC4105232 DOI: 10.1186/1757-2215-7-73] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/07/2014] [Indexed: 12/17/2022] Open
Abstract
Background Key roles for epigenetic mechanisms in tumorigenesis are well accepted, while the relationship between gene methylation and malignant transformation of ovarian endometriosis (EMS) was seldom reported. In this study, we aimed to screen for aberrantly methylated genes associated with the malignant transformation of ovarian EMS and to preliminarily verify the reliability of screened results by detecting the methylation status and protein expression of the candidate gene in a larger scale of formaldehyde-fixed and paraffin-embedded (FFPE) samples. Methods Methylated CpG island amplification coupled with representational difference analysis (MCA-RDA) was performed on 3 couples of endometriosis-associated ovarian carcinoma (EAOC) fresh samples to identify differentially methylated candidate genes related to malignant transformation of ovarian EMS; Methylation-specific PCR (MSP) and immunohistochemistry were performed in 30 EAOC samples to detected the methylation status and protein expression of RASSF2 gene to verify the reliability of MCA-RDA results. Results Nine differentially methylated genes were obtained by MCA-RDA as candidate genes for malignant transformation of EMS; Methylation frequency of RASSF2 in the neoplastic tissues of EAOC group was higher than that in the ectopic endometria (p < 0.05). While protein expression of RASSF2 in the neoplastic tissues was lower than that in the ectopic endometria of the EAOC group (p < 0.05) Absence of protein expression of RASSF2 was significantly correlated with the promoter methylation of the gene (p < 0.05). Conclusions RASSF2, RUNX3, GSTZ1, CYP2A, GBGT1, NDUFS1, SPOCK2, ADAM22, and TRIM36 were candidate genes for malignant transformation of ovarian EMS and epigenetic inactivation of RASSF2 by promoter hypermethylation is an early event in malignant transformation of ovarian EMS. The screen results were reliable and worthy of further study.
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Rahmioglu N, Nyholt DR, Morris AP, Missmer SA, Montgomery GW, Zondervan KT. Genetic variants underlying risk of endometriosis: insights from meta-analysis of eight genome-wide association and replication datasets. Hum Reprod Update 2014; 20:702-16. [PMID: 24676469 PMCID: PMC4132588 DOI: 10.1093/humupd/dmu015] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Endometriosis is a heritable common gynaecological condition influenced by multiple genetic and environmental factors. Genome-wide association studies (GWASs) have proved successful in identifying common genetic variants of moderate effects for various complex diseases. To date, eight GWAS and replication studies from multiple populations have been published on endometriosis. In this review, we investigate the consistency and heterogeneity of the results across all the studies and their implications for an improved understanding of the aetiology of the condition. METHODS Meta-analyses were conducted on four GWASs and four replication studies including a total of 11 506 cases and 32 678 controls, and on the subset of studies that investigated associations for revised American Fertility Society (rAFS) Stage III/IV including 2859 cases. The datasets included 9039 cases and 27 343 controls of European (Australia, Belgium, Italy, UK, USA) and 2467 cases and 5335 controls of Japanese ancestry. Fixed and Han and Elkin random-effects models, and heterogeneity statistics (Cochran's Q test), were used to investigate the evidence of the nine reported genome-wide significant loci across datasets and populations. RESULTS Meta-analysis showed that seven out of nine loci had consistent directions of effect across studies and populations, and six out of nine remained genome-wide significant (P < 5 × 10−8), including rs12700667 on 7p15.2 (P = 1.6 × 10−9), rs7521902 near WNT4 (P = 1.8 × 10−15), rs10859871 near VEZT (P = 4.7 × 10−15), rs1537377 near CDKN2B-AS1 (P = 1.5 × 10−8), rs7739264 near ID4 (P = 6.2 × 10−10) and rs13394619 in GREB1 (P = 4.5 × 10−8). In addition to the six loci, two showed borderline genome-wide significant associations with Stage III/IV endometriosis, including rs1250248 in FN1 (P = 8 × 10−8) and rs4141819 on 2p14 (P = 9.2 × 10−8). Two independent inter-genic loci, rs4141819 and rs6734792 on chromosome 2, showed significant evidence of heterogeneity across datasets (P < 0.005). Eight of the nine loci had stronger effect sizes among Stage III/IV cases, implying that they are likely to be implicated in the development of moderate to severe, or ovarian, disease. While three out of nine loci were inter-genic, the remaining were in or near genes with known functions of biological relevance to endometriosis, varying from roles in developmental pathways to cellular growth/carcinogenesis. CONCLUSIONS Our meta-analysis shows remarkable consistency in endometriosis GWAS results across studies, with little evidence of population-based heterogeneity. They also show that the phenotypic classifications used in GWAS to date have been limited. Stronger associations with Stage III/IV disease observed for most loci emphasize the importance for future studies to include detailed sub-phenotype information. Functional studies in relevant tissues are needed to understand the effect of the variants on downstream biological pathways.
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Affiliation(s)
- Nilufer Rahmioglu
- Wellcome Trust Center for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Dale R Nyholt
- Neurogenetics, QIMR Berghofer Medical Research Institute, Brisbane QLD 4029, Australia
| | - Andrew P Morris
- Wellcome Trust Center for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK Department of Biostatistics, University of Liverpool, Duncan Building, Daulby Street, Liverpool L69 3GA, UK
| | - Stacey A Missmer
- Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital and Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA
| | - Grant W Montgomery
- Molecular Epidemiology, QIMR Berghofer Medical Research Institute, Brisbane QLD 4029, Australia
| | - Krina T Zondervan
- Wellcome Trust Center for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK
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Mussazhanova Z, Miura S, Stanojevic B, Rougounovitch T, Saenko V, Shiraishi T, Kurashige T, Shichijo K, Kaneko K, Takahashi H, Ito M, Nakashima M. Radiation-associated small cell neuroendocrine carcinoma of the thyroid: a case report with molecular analyses. Thyroid 2014; 24:593-8. [PMID: 23844610 DOI: 10.1089/thy.2013.0214] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Neuroendocrine tumor (NET) of the thyroid other than medullary carcinoma is extremely rare. We describe here a case of calcitonin-negative small cell neuroendocrine carcinoma (SCNEC), which occurred in a thyroid gland that had previously been irradiated at high dose (60 Gy) for pharyngeal cancer, with molecular analyses for follicular cell origin. PATIENT FINDINGS The tumor cells were small with fine chromatin, inconspicuous nucleoli, and inapparent cytoplasm, and showed neuroendocrine architectures such as palisading, rosettes, and trabeculae. Mitotic figures were numerous exceeding 10 mitoses per 10 high-power fields. The tumor cells invaded into several vessels and metastasized to regional lymph nodes. Immunohistochemically, the tumor cells were strongly positive for neuroendocrine markers and thyroglobulin (Tg), a marker of thyroid follicular cells but negative for calcitonin and carcinoembryonic antigen (CEA). Expression of Tg and thyrotropin receptor (TSHR) were confirmed by quantitative real-time polymerase chain reaction (RT-PCR). Ki-67 labeling index was more than 70% in the tumor cells. Taken together, the tumor was diagnosed as SCNEC of the thyroid. Genetic analyses also revealed microsatellite abnormalities of the phosphatase and tensin homolog (PTEN) gene, suggesting that functional loss of PTEN contributes to carcinogenesis. CONCLUSIONS This is the first report describing a SCNEC of the thyroid with molecular analyses that provide evidence for a follicular epithelial origin.
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Affiliation(s)
- Zhanna Mussazhanova
- 1 Department of Tumor and Diagnostic Pathology, Nagasaki University , Nagasaki, Japan
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Meyer JL, Zimbardi D, Podgaec S, Amorim RL, Abrão MS, Rainho CA. DNA methylation patterns of steroid receptor genes ESR1, ESR2 and PGR in deep endometriosis compromising the rectum. Int J Mol Med 2014; 33:897-904. [PMID: 24481237 DOI: 10.3892/ijmm.2014.1637] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 12/17/2013] [Indexed: 11/06/2022] Open
Abstract
Endometriosis is characterized by the presence of endometrial-like tissue located outside the uterine cavity. Recent evidence suggests that endometriosis may be an epigenetic disease, as well as an estrogen-dependent disease. Based on the unique steroid hormone receptor expression profile observed in endometriotic lesions as compared to eutopic endometrium, the present study aimed to gain further insight into the DNA methylation patterns of alternative promoters of the steroid receptor genes ESR1, ESR2 and PGR in intestinal deep endometriosis, one of the most aggressive forms of endometriosis. The DNA methylation patterns were evaluated by methylation-specific polymerase chain reaction (MS-PCR) after bisulfite modification in 44 endometriotic tissues as well as in 7 matched eutopic endometrium. No differences in the DNA methylation were observed for the ESR1 and ESR2 genes. Methylation of the PGR gene was observed in 39% (17 out of 44) and 19% (7 out of 37) of the cases in the promoter regions B (PGRB) and A (PGRA), respectively. Both PGR promoter regions were methylated in 3 cases. PGRB methylated alleles were detected exclusively in the endometriotic lesions when compared to the eutopic endometrium obtained from the same patient. The effect of DNA methylation in inhibiting the PGR gene expression was corroborated by immuno-staining for PgR protein in a subset of tissue samples. The present study demonstrated that epigenetic changes occur in both promoter regions of the PGR gene in intestinal endometriosis. Since eutopic and ectopic tissues do not respond sufficiently to progesterone in women with endometriosis, further study is necessary to evaluate the effect of epigenetic alterations in progesterone-resistance in this enigmatic disease.
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Affiliation(s)
- Joana Ladeira Meyer
- Department of Genetics, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Daniela Zimbardi
- Department of Genetics, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Sérgio Podgaec
- Department of Obstetrics and Gynecology, São Paulo University (USP), São Paulo, Brazil
| | - Renee Laufer Amorim
- Department of Clinical Veterinary Medicine, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Maurício Simões Abrão
- Department of Obstetrics and Gynecology, São Paulo University (USP), São Paulo, Brazil
| | - Cláudia Aparecida Rainho
- Department of Genetics, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
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Govatati S, Kodati VL, Deenadayal M, Chakravarty B, Shivaji S, Bhanoori M. Mutations in the PTEN tumor gene and risk of endometriosis: a case-control study. Hum Reprod 2013; 29:324-36. [PMID: 24154570 DOI: 10.1093/humrep/det387] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
STUDY QUESTION Are mutations in the phosphatase and tensin homolog deleted on chromosome 10 (PTEN) gene associated with endometriosis? SUMMARY ANSWER Loss of heterozygosity (LOH) at the 10q23.3 locus, PTEN somatic mutations and changes in the levels and distribution of proteins in the PTEN-PI3K/Akt signal transduction pathway are associated with endometriosis. WHAT IS KNOWN ALREADY Endometriosis has a strong genetic basis. Recent genome-wide association and linkage studies have reported a significant association of endometriosis with 7p15.2, 9p21 and 10q23-26 loci. PTEN, which maps to 10q23.3, acts as a tumor suppressor gene through the action of its phosphatase protein product, phosphatase and tensin homolog (PTEN). This phosphatase is involved in the regulation of the cell cycle, and mutations of PTEN are a step in the development of many cancers. STUDY DESIGN, SIZE, DURATION A total of 1252 subjects of Indian origin (endometriosis patients = 752; controls = 500) were recruited to participate in this case-control study. Recruitment took place from 2001 to 2009 at Institute of Reproductive Medicine (IRM), Kolkata, India; Infertility Institute and Research Centre (IIRC), Secundrabad, India and Vasavi Medical and Research Centre, Hyderabad, India. PARTICIPANTS/MATERIALS, SETTING, METHODS LOH on 10q, 9p and 7p was analyzed in analogous ectopic-eutopic endometria along with blood samples from 32 advanced stage endometriosis patients by PCR-GeneScan analysis. Genotyping of PTEN was carried out on genomic DNA of analogous ectopic-eutopic endometria (n = 32) as well as blood samples from 720 patients and 500 controls by PCR-sequencing analysis to explore somatic and germ-line mutations, respectively. The levels and distribution of PTEN, p-Akt, p-Bad and p27 were analyzed in the eutopic endometria of patients (n = 5) and controls (n = 5) using western-blot and immunohistochemistry. MAIN RESULTS AND THE ROLE OF CHANCE PCR-GeneScan analysis revealed a higher LOH frequency at 10q23.3 (84.4%) compared with other loci analyzed, hence we focused our attention on PTEN. PCR-sequencing analysis revealed seven novel somatic mutations and 23 germ-line polymorphisms in patients. Among somatic mutations, a frame-shift insertion at 10:89692992-89692993 (in the functionally important N-terminal phosphatase domain of PTEN) occurred in 11 of the 32 ectopic endometria. Western-blot and immunohistochemical analysis revealed decreased PTEN and increased p-Akt and p-Bad levels in eutopic endometria of patients compared with controls (all comparisons, P < 0.0001). Furthermore, PTEN loss was more frequent in the nucleus than in the cytoplasm. Expression of p27 did not differ between patients and controls. LIMITATIONS, REASONS FOR CAUTION Protein analysis was performed in eutopic endometrial samples from only a small number of patients and controls. In future investigations, a larger sample size should be used and the role of the other genes involved in the PTEN-PI3K/Akt signal transduction pathway should be analyzed. WIDER IMPLICATIONS OF THE FINDINGS Our findings revealed a possible involvement of the PTEN-PI3K/Akt-Bad axis in the pathogenesis of endometriosis, which may facilitate the discovery of suitable pathway inhibitors for disease treatment. STUDY FUNDING/COMPETING INTEREST(S) This study was supported by grants from the Science & Engineering Research Board (SERB), India (Lr No: SR/FT/LS-188/2009) to BM. The authors have no competing interests to declare.
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Affiliation(s)
- Suresh Govatati
- Department of Biochemistry, Osmania University, Hyderabad 500 007, India
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Abstract
The ultimate goal of defining cancer specific precursors is to facilitate early detection and intervention before the development of invasive malignancy. Unlike other malignancies involving the female genital tract such as cervical or endometrial carcinomas, precursor lesions of ovarian carcinomas have not been well characterised, resulting in a failure to develop effective screening programs. Recent clinicopathological and molecular studies have provided new insight into the origin and pathogenesis of ovarian carcinomas. It has been shown that ovarian cancer is comprised of different tumour types differing not only in morphology, but also in pathogenesis, molecular alterations and clinical progression. A dualistic model of ovarian carcinogenesis has been proposed. Type I tumours which include low grade serous, low grade endometrioid, clear cell, mucinous carcinomas and Brenner tumours, are generally indolent and tend to be genetically stable, although clear cell carcinoma would probably belong to an intermediate category. They demonstrate a step-wise progression from a benign precursor such as a benign to borderline tumour or endometriosis and are characterised by genetic aberrations targeting specific cell signalling pathways. Type II tumours comprise high grade serous, high grade endometrioid, and undifferentiated carcinomas as well as malignant mixed mesodermal tumours. They are clinically aggressive and exhibit high genetic instability with frequent p53 mutations. Mounting evidence suggests that many high grade serous carcinomas originate from the epithelium of the distal fallopian tube, and that serous tubal intraepithelial carcinoma (STIC) represents the putative precursor of these neoplasms. Low grade serous carcinomas arise via transformation of benign and borderline serous tumours, thought to be derived from inclusion cysts originating from the ovarian surface or tubal epithelium. Recently it has been suggested that papillary tubal hyperplasia may be a putative precursor lesion for serous borderline tumours. Both endometrioid and clear cell carcinomas develop from endometriosis, via alterations affecting different genetic pathways. The origin of mucinous and transitional cell neoplasms is not well characterised, although new data suggest a possible origin from transitional cell nests present at the tubal-mesothelial junction. Likewise, the pathogenesis of carcinosarcomas is also not well established because of their rarity but there is accumulating evidence that the carcinomatous component determines the course of the disease and gives rise to the malignant mesenchymal component. This review discusses recent developments in the pathogenesis of ovarian carcinoma, with particular emphasis on the putative precursor lesions that give rise to the major histological subtypes. Recognition of these lesions is not only important in improving the understanding of ovarian carcinogenesis, but it will also influence our approach to prevent, detect and treat these tumours.
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Siufi Neto J, Kho RM, Siufi DFDS, Baracat EC, Anderson KS, Abrão MS. Cellular, histologic, and molecular changes associated with endometriosis and ovarian cancer. J Minim Invasive Gynecol 2013; 21:55-63. [PMID: 23962574 DOI: 10.1016/j.jmig.2013.07.021] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 07/28/2013] [Accepted: 07/30/2013] [Indexed: 02/06/2023]
Abstract
Our understanding of the pathogenesis of endometriosis is rapidly evolving as early molecular events are increasingly identified. Endometriosis is associated with increased risk of ovarian cancer and exhibits neoplastic phenotypes including invasion of stromal tissue and lymphatic spread to distant organs. This review of the literature establishes the clinical, epidemiologic, and pathologic correlation between endometriosis and low-grade ovarian cancer. Genetic studies have demonstrated that endometriotic lesions have mutations in genes directly related to neoplasms, in particular the p53, KRAS, PTEN, and ARID1A genes, which suggests a direct transition from a subset of endometriotic lesions to invasive carcinomas. The identification of both genetic and epigenetic biomarkers including microRNAs are essential for identifying patients at risk for the transition to neoplasia.
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Affiliation(s)
| | - Rosanne M Kho
- Department of Surgical Gynecology, Mayo Clinic Arizona, Phoenix
| | | | - Edmund Chada Baracat
- Department of Obstetrics and Gynecology, University of the State of São Paulo, São Paulo, Brazil
| | | | - Maurício Simões Abrão
- Department of Obstetrics and Gynecology, University of the State of São Paulo, São Paulo, Brazil
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Shoni M, Parra-Herran CE, May T, Wright AA, Feltmate CM. Multiple Synchronous Primary Gynecologic Malignancies in an MSH2 Mutation Carrier With Endometriosis. J Clin Oncol 2013; 31:e33-6. [DOI: 10.1200/jco.2012.43.4274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Melina Shoni
- Brigham and Women's Hospital; Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | | | - Taymaa May
- Brigham and Women's Hospital; Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Alexi A. Wright
- Dana-Farber Cancer Institute; Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Colleen M. Feltmate
- Brigham and Women's Hospital; Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
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Nyholt DR, Low SK, Anderson CA, Painter JN, Uno S, Morris AP, MacGregor S, Gordon SD, Henders AK, Martin NG, Attia J, Holliday EG, McEvoy M, Scott RJ, Kennedy SH, Treloar SA, Missmer SA, Adachi S, Tanaka K, Nakamura Y, Zondervan KT, Zembutsu H, Montgomery GW. Genome-wide association meta-analysis identifies new endometriosis risk loci. Nat Genet 2012; 44:1355-9. [PMID: 23104006 PMCID: PMC3527416 DOI: 10.1038/ng.2445] [Citation(s) in RCA: 206] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 09/24/2012] [Indexed: 12/18/2022]
Abstract
We conducted a genome-wide association meta-analysis of 4,604 endometriosis cases and 9,393 controls of Japanese and European ancestry. We show that rs12700667 on chromosome 7p15.2, previously found to associate with disease in Europeans, replicates in Japanese (P = 3.6 × 10(-3)), and we confirm association of rs7521902 at 1p36.12 near WNT4. In addition, we establish an association of rs13394619 in GREB1 at 2p25.1 with endometriosis and identify a newly associated locus at 12q22 near VEZT (rs10859871). Excluding cases of European ancestry of minimal or unknown severity, we identified additional previously unknown loci at 2p14 (rs4141819), 6p22.3 (rs7739264) and 9p21.3 (rs1537377). All seven SNP effects were replicated in an independent cohort and associated at P <5 × 10(-8) in a combined analysis. Finally, we found a significant overlap in polygenic risk for endometriosis between the genome-wide association cohorts of European and Japanese descent (P = 8.8 × 10(-11)), indicating that many weakly associated SNPs represent true endometriosis risk loci and that risk prediction and future targeted disease therapy may be transferred across these populations.
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MESH Headings
- Asian People/genetics
- Carrier Proteins/genetics
- Chromosomes, Human, Pair 1/genetics
- Chromosomes, Human, Pair 2/genetics
- Chromosomes, Human, Pair 6/genetics
- Chromosomes, Human, Pair 7/genetics
- Chromosomes, Human, Pair 9/genetics
- Cohort Studies
- Endometriosis/genetics
- Female
- Genetic Loci
- Genetic Predisposition to Disease
- Genome-Wide Association Study
- Humans
- Membrane Proteins/genetics
- Neoplasm Proteins/genetics
- Polymorphism, Single Nucleotide
- Risk
- Severity of Illness Index
- White People/genetics
- Wnt4 Protein/genetics
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Affiliation(s)
- Dale R Nyholt
- Queensland Institute of Medical Research, Brisbane, Queensland, Australia.
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Rahmioglu N, Missmer SA, Montgomery GW, Zondervan KT. Insights into Assessing the Genetics of Endometriosis. CURRENT OBSTETRICS AND GYNECOLOGY REPORTS 2012; 1:124-137. [PMID: 22924156 PMCID: PMC3410033 DOI: 10.1007/s13669-012-0016-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Endometriosis is a complex disease arising from the interplay between multiple genetic and environmental factors. The genetic variants potentially underlying the hereditary component of endometriosis have been widely investigated through hypothesis-driven candidate gene studies, an approach that generally has proven to be inherently difficult and problematic for a number of reasons. Recently, through major collaborative efforts in the endometriosis research field, hypothesis-free genome-wide approaches have started to provide new insights into potential pathways leading to development of endometriosis, as well as highlighting the phenotypic heterogeneity of the condition. This review summarizes the most recent studies investigating the genetic variation contributing to endometriosis, with a particular focus on genome-wide approaches, and discusses promising future directions of genetic research.
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Affiliation(s)
- Nilufer Rahmioglu
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Stacey A. Missmer
- Department of Obstetrics, Gynecology, and Reproductive Biology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA
- Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA
- Department of Epidemiology, Harvard School of Public Health, Boston, MA USA
| | - Grant W. Montgomery
- Molecular Epidemiology, Queensland Institute for Medical Research, Brisbane, Australia
| | - Krina T. Zondervan
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Oxford, UK
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Pollacco J, Sacco K, Portelli M, Schembri-Wismayer P, Calleja-Agius J. Molecular links between endometriosis and cancer. Gynecol Endocrinol 2012; 28:577-81. [PMID: 22309646 DOI: 10.3109/09513590.2011.650761] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Endometriosis is the leading cause of morbidity among premenopausal women affecting about 1 in 10 females. The features shared by endometriosis and cancer include the ability to evade apoptosis, the stem cell-like ability and angiogenic potential. As such characteristics are encoded by the cell's genetic constitution, acquired mutations are responsible for the malignant transformation of endometriosis. Indeed, a number of tumour-suppressor genes and proto-oncogenes, such as protein 53 (P53) and B-cell lymphoma 2 (BCL-2) respectively, are mutated and as a result differentially expressed between endometriotic and malignant tissue associated with endometriosis. Moreover, cytokines and macrophages, both of which are inflammatory mediators have been implicated in the transformation process. The angiogenic properties possessed by cancer arising from endometriosis signifies a bad prognosis, while the stem cell-like activity possessed by both endometriosis and cancer has been attributed to the effect of oestrogen. A number of differences between endometriosis and cancer are found at the molecular level. Considering the link between these two pathologies, the three components which fuel the malignant transformation of endometriosis can be embodied in the endometriosis-induced carcinoma (EIC) triangle which shows the intricate relationship between endocrinologic, immunologic and genetic components.
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Affiliation(s)
- Joel Pollacco
- Department of Anatomy, Faculty of Medicine and Surgery, University of Malta, Tal-Qroqq, Msida, MSD 2080, Malta
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Involvement of pelvic inflammation-related mismatch repair abnormalities and microsatellite instability in the malignant transformation of ovarian endometriosis. Hum Pathol 2012; 43:1964-72. [PMID: 22626277 DOI: 10.1016/j.humpath.2012.02.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 02/01/2012] [Accepted: 02/03/2012] [Indexed: 12/12/2022]
Abstract
Inflammation in the ovary, including ovulation and pelvic inflammatory disease, has been proposed to play a role in the pathogenesis of ovarian cancer. Endometriotic lesions trigger a local inflammatory reaction and have been reported to be associated with an increased risk of epithelial ovarian cancer. However, the precise molecular mechanisms of ovarian cancer arising from endometriosis are still to be elucidated. To clarify the involvement of mismatch repair (MMR) abnormalities in the inflammation-associated malignant transformation of endometriosis, the immunohistochemical expression of mismatch repair proteins (human mutL homolog 1 [hMLH1] and human mutS homolog 2 [hMSH2]) was examined in 27 cases of ovarian endometriosis, 25 cases of ovarian carcinoma accompanied by endometriosis, and 39 cases of solitary ovarian carcinoma. In addition, the relationship between mismatch repair abnormalities including the microsatellite instability, PTEN (phosphatase and tensin homolog) mutation, and clinicopathologic parameters was analyzed. The expression of mismatch repair proteins was stepwisely decreased in endometriosis, ovarian carcinoma accompanied by endometriosis, and ovarian carcinoma. Tumors harboring multiple microsatellite instability (high-frequency microsatellite instability [MSI-H]) were detected in 4 (14.8%) of 27 cases of endometriosis and 7 (30.4%) of 23 cases of ovarian carcinomas. The frequency of PTEN mutations was higher in MSI-H cases than in microsatellite instability-stable (MSI-S) cases. In 2 cases of ovarian carcinoma accompanied by endometriosis, the decreased expression of mismatch repair proteins and MSI-H was observed in both the endometriosis and carcinoma lesions. Clinicopathologically, the MSI-H cases were associated with elevated serum levels of C-reactive protein and higher white blood cell counts. These findings suggest that mismatch repair abnormalities might be involved in the malignant transformation of ovarian endometriosis and that inflammation induces mismatch repair abnormalities during ovarian carcinogenesis arising from endometriosis.
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