title: MicroRNA Expression is Altered in Granulosa Cells of Ovarian Hyperresponders.
abstract: Controlled ovarian stimulation plays an integral role in assisted reproduction technology, but individual patients have different responses to exogenous gonadotropins. In order to determine whether microRNAs (miRNAs) have a regulatory role in ovarian response, we profiled the expression of microRNAs in isolated ovarian granulosa cells collected from ovarian hyperresponders and normal responders using microarrays and validated the expression of selected miRNAs using quantitative polymerase chain reaction (PCR). There were 81 miRNAs differentially expressed between the 2 groups, with 45 increased and 36 decreased in the high response group. Bioinformatics analysis of these altered miRNAs and their target genes revealed some significantly enriched pathways, including regulation of the cell cycle, transcription, cell proliferation, and gonadotrophin releasing hormone signaling pathway. The expression of hsa-miR-513a-5p, hsa-miR-27b-3p, hsa-miR-19b-3p, hsa-miR-3201, hsa-miR-423-5p, hsa-miR-193b-5p, and hsa-miR-202-3p was validated by real-time PCR. Hsa-miR-423-5p, predicted to target anti-Mullerian hormone, cytochrome P450, family 19, subfamily A, polypeptide 1, methylenetetrahydrofolate reductase, progesterone receptor, and follicle stimulating hormone, β-polypeptide was found to have significantly decreased expression in the hyperresponders (P = .023). Hsa-miR-193b-5p also showed a tendency to be significantly decreased in the hyperresponders (P = .093). In conclusion, our findings provide evidence for altered miRNA expression in granulosa cells of women with ovarian hyperresponse, suggesting a role of miRNAs in regulating ovarian response to gonadotropins.
authors.affiliation: Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, China.
authors.forename: Shi
authors.initials: S
authors.lastname: Xie
authors.affiliation: Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, China.
authors.forename: Enkhzaya
authors.initials: E
authors.lastname: Batnasan
authors.affiliation: Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, China.
authors.forename: Qiong
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, China lyp7798@126.com.
authors.forename: Yanping
authors.initials: Y
authors.lastname: Li
mesh_terms: D000328:Adult; D016000:Cluster Analysis; D005260:Female; D020869:Gene Expression Profiling; D006107:Granulosa Cells / Q000378:metabolism*; D006801:Humans; D035683:MicroRNAs / Q000378:metabolism*; D010062:Ovulation Induction; D015398:Signal Transduction; D055815:Young Adult
chemical_list: D035683:MicroRNAs
keywords: controlled ovarian stimulation (COS); granulosa cells; miRNA; ovarian response; regulation