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논문 기본 정보

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학술저널
저자정보
Pruksananonda, Kamthorn (Reproductive Medicine Division, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University) Wasinarom, Artisa (Reproductive Medicine Division, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University) Sereepapong, Wisan (Reproductive Medicine Division, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University) Sirayapiwat, Porntip (Reproductive Medicine Division, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University) Rattanatanyong, Prakasit (Center of Excellence in Molecular Genetics of Cancer and Human Disease, Department of Anatomy, King Chulalongkorn Memorial Hospital, Faculty of Medicine, Chulalongkorn Univers) Mutirangura, Apiwat (Center of Excellence in Molecular Genetics of Cancer and Human Disease, Department of Anatomy, King Chulalongkorn Memorial Hospital, Faculty of Medicine, Chulalongkorn University)
저널정보
대한생식의학회 Clinical and experimental reproductive medicine : CERM Clinical and experimental reproductive medicine : CERM 제43권 제2호
발행연도
2016.1
수록면
82 - 89 (8page)

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Objective: The long interspersed elements (LINE-1, L1s) are a group of genetic elements found in large numbers in the human genome that can translate into phenotype by controlling genes. Growing evidence supports the role of epigenetic in polycystic ovary syndrome (PCOS). The purpose of this study is to evaluate the DNA methylation levels in LINE-1 in a tissue-specific manner using cumulus cells from patients with PCOS compared with normal controls. Methods: The study included 19 patients with PCOS and 22 control patients who were undergoing controlled ovarian hyperstimulation. After oocyte retrieval, cumulus cells were extracted. LINE-1 DNA methylation levels were analysed by bisulfite treatment, polymerase chain reaction, and restriction enzyme digestion. The Connection Up- and Down-Regulation Expression Analysis of Microarrays software package was used to compare the gene regulatory functions of intragenic LINE-1. Results: The results showed higher LINE-1 DNA methylation levels in the cumulus cells of mature oocytes in PCOS patients, 79.14 (${\pm}2.66$) vs. 75.40 (${\pm}4.92$); p=0.004, but no difference in the methylation of cumulus cells in immature oocytes between PCOS and control patients, 70.33 (${\pm}4.79$) vs. 67.79 (${\pm}5.17$); p=0.155. However, LINE-1 DNA methylation levels were found to be higher in the cumulus cells of mature oocytes than in those of immature oocytes in both PCOS and control patients. Conclusion: These findings suggest that the epigenetic modification of LINE-1 DNA may play a role in regulating multiple gene expression that affects the pathophysiology and development of mature oocytes in PCOS.

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