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- W2989702244 abstract "Oxidative stress is a causal factor and key promoter of all kinds of reproductive disorders related to granulosa cell (GC) apoptosis that acts by dysregulating the expression of related genes. Various studies have suggested that grape seed procyanidin B2 (GSPB2) may protect GCs from oxidative injury, though the underlying mechanisms are not fully understood. Therefore, whether the beneficial effects of GSPB2 are associated with microRNAs, which have been suggested to play a critical role in GC apoptosis by regulating the expression of protein-coding genes, was investigated in this study. The results showed that GSPB2 treatment protected GCs from a H 2 O 2 -induced apoptosis, as detected by an MTT assay and TUNEL staining, and increased let-7a expression in GCs. Furthermore, let-7a overexpression markedly increased cell viability and inhibited H 2 O 2 -induced GC apoptosis. Furthermore, the overexpression of let-7a reduced the upregulation of Fas expression in H 2 O 2 -treated GCs at the mRNA and protein levels. Dual-luciferase reporter assay results indicated that let-7a directly targets the Fas 3<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M1><mml:msup><mml:mrow /><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:math>-UTR. Furthermore, the overexpression of let-7a enhanced the protective effects of GSPB2 against GC apoptosis induced by H 2 O 2 . These results indicate that GSPB2 inhibits H 2 O 2 -induced apoptosis of GCs, possibly through the upregulation of let-7a." @default.
- W2989702244 created "2019-12-05" @default.
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- W2989702244 date "2019-11-19" @default.
- W2989702244 modified "2023-10-16" @default.
- W2989702244 title "Grape Seed Procyanidin B2 Protects Porcine Ovarian Granulosa Cells against Oxidative Stress-Induced Apoptosis by Upregulating let-7a Expression" @default.
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- W2989702244 doi "https://doi.org/10.1155/2019/1076512" @default.
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