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Effect of miR-26b-5p on cis-diamine dichloroplatinum–induced ovarian granulosa cell injury by targeting MAP3K9

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Abstract

The proliferation and differentiation of granulosa cells are very important for follicular development. The dysfunction of granulosa cells leading to follicular development is an important cause of ovarian endocrine abnormalities. More and more evidence shows that microRNAs are involved in the regulation of ovarian granulosa cell function. It has been found that MiR-26b may be involved in CDDP resistance. Studies have shown that miR-26b can promote apoptosis of ovarian granulosa cells, but there are few studies on its mechanism, and no studies have been found on the damage of miR-26b-5p to rat ovarian granulosa cells induced by CDDP. Identification of ovarian granulosa cells was conducted by immunochemical staining. Cell counting kit 8 (CCK-8) was used to detect cell viability, flow cytometry was used to detect cell apoptosis, quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot (WB) were used to analyze the expression of miR-26b-5p, MAP3K9, cleaved Caspase-3, Bax, and Bcl-2; dual-luciferase reporter assay results further verify the targeting relation between miR-26b-5p and MAP3K9. CDDP remarkably inhibited ovarian granulosa cell viability and induced ovarian granulosa cell apoptosis; miR-26b-5p inhibitor enhanced viability and inhibited apoptosis of ovarian granulosa cells, which treated with CDDP, but had little effect on normal cells. MAP3K9 partially reversed the effect of miR-26b-5p on ovarian granulosa cells induced by CDDP. miR-26b-5p has a protective effect on CDDP-induced ovarian granulosa cells via targeting MAP3K9.

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Funding

This work was supported by the National Natural Science Foundation of China [Grant Number 81571387].

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Correspondence to Junjie Zhang.

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The study was approved by the ethics review board for animal studies of Changhai Hospital.

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The authors declare that they have no conflicts of interest.

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Editor: Tetsuji Okamoto

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Liu, S., Li, L., Li, M. et al. Effect of miR-26b-5p on cis-diamine dichloroplatinum–induced ovarian granulosa cell injury by targeting MAP3K9. In Vitro Cell.Dev.Biol.-Animal 56, 213–221 (2020). https://doi.org/10.1007/s11626-020-00439-4

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  • DOI: https://doi.org/10.1007/s11626-020-00439-4

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