Center for Reproductive Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, China.
Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, China.
Biochem Biophys Res Commun. 2021 Jan 1;534:468-473. doi: 10.1016/j.bbrc.2020.11.058. Epub 2020 Nov 28.
The postponement of childbearing by women has led to an increase in infertility. The reproductive aging process leads to a decrease in both the quantity and quality of oocytes. The aim of this study was to investigate exosomal microRNAs in human ovarian follicular fluid and explore their potential association with oocyte quality. We collected ovarian follicle fluid from 68 patients and assigned the patients to A (superior oocyte quality) or B (poor oocyte quality) group according to their oocyte quality. Exosomal miRNAs were extracted, library constructed and sequenced using the Illumina HiSeq platform. Subsequently, we analyzed exosomal miRNA expression, predicted the miRNA target genes, and enriched Gene Ontology terms using GOSeq. Kyoto Encyclopedia of Genes and Genomes pathway analysis was performed using miRanda. A total of 47 miRNAs were found to be significantly differentially expressed between group A and group B (p < 0.05). Among nine differentially expressed miRNAs that were previously known, seven were upregulated in group B. In silico analysis indicated that several of these exosomal miRNAs were involved in pathways implicated in oocyte quality. Analysis of the expression of exosomal miRNAs in human ovarian follicular fluid showed that they were critical for maintaining oocyte quality. Our findings provide the basis for further investigations of the functions of exosomal miRNAs in the ovarian microenvironment and suggest that these exosomal miRNAs may be potential biomarkers for evaluating oocyte quality. The findings are potentially important to maintain oocyte quality in clinical settings.
女性生育年龄的推迟导致不孕不育率上升。生殖衰老过程导致卵母细胞数量和质量下降。本研究旨在探讨人卵巢卵泡液中的外泌体 microRNAs 及其与卵母细胞质量的潜在关联。我们收集了 68 例患者的卵巢卵泡液,并根据卵母细胞质量将患者分为 A 组(优质卵母细胞)和 B 组(卵母细胞质量差)。使用 Illumina HiSeq 平台提取外泌体 microRNAs,构建文库并进行测序。随后,我们使用 GOSeq 分析外泌体 microRNA 的表达,预测 miRNA 靶基因,并富集 GO 术语。使用 miRanda 进行京都基因与基因组百科全书通路分析。A 组和 B 组之间有 47 个 miRNA 表达存在显著差异(p<0.05)。在已知的 9 个差异表达 miRNA 中,有 7 个在 B 组中上调。计算机分析表明,这些外泌体 miRNA 中的几个参与了与卵母细胞质量相关的途径。人卵巢卵泡液中外泌体 miRNA 的表达分析表明,它们对维持卵母细胞质量至关重要。我们的研究结果为进一步研究外泌体 miRNA 在卵巢微环境中的功能提供了基础,并表明这些外泌体 miRNA 可能是评估卵母细胞质量的潜在生物标志物。这些发现对于维持临床环境中的卵母细胞质量具有潜在的重要意义。
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