Activation of Steroidogenesis, Anti-Apoptotic Activity, and Proliferation in Porcine Granulosa Cells byRUNX1Is Negatively Regulated by H3K27me3 Transcriptional Repression
文献类型： 外文期刊
作者： Zhong, Yuyi 1 ; Li, Liying 1 ; He, Yingting 1 ; He, Bo 1 ; Li, Zhonghui 2 ; Zhang, Zhe 1 ; Zhang, Hao 1 ; Yuan, Xiaolong; 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Natl Engn Res Ctr Breeding Swine Ind, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Guangzhou 510642, Peoples R China
2.Xinjiang Acad Anim Sci, Inst Anim Biotechnol, Urumqi 830000, Xinjiang, Peoples R China
关键词： RUNX1; granulosa cells; steroidogenesis; cell apoptosis and proliferation; antral follicles; pigs
期刊名称：GENES （ 影响因子：4.096； 五年影响因子：4.339 ）
ISSN：
年卷期： 2020 年 11 卷 5 期
页码：
收录情况： SCI
摘要： H3K27me3 is an epigenetic modification that results in the repression of gene transcription. The transcription factor RUNX1 (the runt-related transcription factor 1) influences granulosa cells' growth and ovulation. This research uses ELISA, flow cytometry, EDU, ChIP-PCR, WB and qPCR to investigate steroidogenesis, cell apoptosis, and the proliferation effect ofRUNX1in porcine granulosa cells (pGCs) as regulated by H3K27me3. Decreased H3K27me3 stimulates the expression of steroidogenesis-related genes, includingCYP11A1,PTGS2, andSTAR, as well as prostaglandin. H3K27me3 transcriptionally repressesRUNX1here, whereas RUNX1 acts as an activator ofFSHR,CYP11A1, andCYP19A1, promoting the production of androgen, estrogen, and prostaglandin, as well as increasing anti-apoptotic and cell proliferation activity, but decreasing progesterone. Both the complementary recovery of the H3K27me3 antagonist with the siRUNX1 signal, and the H3K27me3 agonist with the RUNX1 signal to maintain RUNX1 lead to the activation ofCYP19A1,ER1,HSD17 beta 4, andSTARhere. Androgen and prostaglandin are significantly repressed but progesterone is markedly increased with the antagonist and siRUNX1. Prostaglandin is significantly promoted with the agonist and RUNX1. Furthermore, H3K27me3-RUNX1 affects the anti-apoptotic activity and stimulation of proliferation in pGCs. The present work verifies the transcriptional suppression ofRUNX1by H3K27me3 during antral follicular development and maturation, which determines the levels of hormone synthesis and cell apoptosis and proliferation in the pGC microenvironment.
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