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MicroRNA Expression Profiles in Follicular Fluid Exosomes of Women with Different Ovarian Reserve

ABSTRACT: Limited research has explored the associations between microRNAs (miRNA) and diminished ovarian reserve (DOR). The study aimed to identify differentially expressed miRNAs in follicular fluid exosomes from women with DOR compared to normal ovarian reserve (NOR) and investigate their role in the proliferation and apoptosis of the human ovarian granulosa tumor cell line KGN.

ORGANISM(S): Homo sapiens

PROVIDER: GSE238177 | GEO | 2024/06/01

REPOSITORIES: GEO

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Project description:Background: Infertility is one of the major health problems and the third most common disease, and diminished ovarian reserve (DOR) is a common cause of infertility. DOR is defined as decreased number or quality of oocytes in reproductive-age women, but the underlying molecular mechanisms remain unclear. Long noncoding RNAs (lncRNAs) has been recognized to play an important role in physiological and pathological processes of the human body, but it is unknown whether lncRNAs are involved in the development of DOR. Methods: The ovarian granulosa cells from infertility women with DOR and normal ovarian reserve (NOR) were obtained and subjected to high-throughput sequencing. A comprehensive bioinformatics analysis was conducted to characterize the mRNAs and lncRNAs expression profiles between DOR and NOR women. Then, the sequencing results were validated by selected randomly lncRNAs using real-time quantitative PCR. Results: A total of 92,853 lncRNAs transcripts were identified between DOR and NOR GCs. Compared with NOR control, 244 lncRNAs were upregulated (53 known and 191 novel) and 222 lncRNAs were downregulated (36 known and 186 novel) in the DOR group. Similarly, 457 differently expressed mRNAs were found between the two groups, with 169 and 288 up- and downregulated respectively. Further functional analysis revealed that differentially expressed genes of mRNA and lncRNA were significantly enriched in various biological processes such as cell adhesion and apoptosis, steroid biosynthesis, and immune system. The results of correlated expression networks between lncRNAs and their predicted target genes uncovered the possible involvement of the thyroid hormone signaling pathway and protein binding, digestion and absorption in the pathogenesis of DOR and showed that SLC16A10 is positively regulated by multiple lncRNAs. In addition, it was verified that the expression patterns of three of the seven selected differentially expressed lncRNAs were consistent with RNA-Seq. Aberrant lncRNAs might be used to develop new diagnostic biomarkers or drugs to target DOR. Conclusion: This study is the first to elucidate the lncRNA and mRNA expression profiles between NOR and DOR patients in the ovarian granulosa cells using sequencing technology. The lncRNAs identified in this study can potentially be novel diagnostic biomarkers and therapeutic targets for DOR.

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MicroRNA Expression Profiles in Follicular Fluid Exosomes of Women with Different Ovarian Reserve

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