大白公猪精浆外泌体miRNA表征鉴定及功能分析

Journal of South China Agricultural University(2023)

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Abstract
[目的]精浆外泌体(Seminal plasma exosome,spEX)在精子成熟、凋亡、受精中起着至关重要的作用.本文旨在探究种公猪spEX miRNA表达及miRNA在精子成熟及功能维持过程中的潜在调控作用.[方法]提取大白公猪spEX并进行电镜分析、粒径分析、标志性蛋白表达分析和miRNA高通量测序.[结果]成功分离出spEX,利用miRNA测序共鉴定出 329 个spEX miRNA.对高表达miRNA进行靶基因预测和功能富集分析,结果表明spEX miRNA在射精、P53 信号通路、前列腺癌、细胞对DNA损伤刺激的反应、负调控凋亡过程、顶体膜结合、受精等通路中均发挥了潜在调控作用.[结论]本研究为spEX miRNA在调控精子活力和精子受精作用方面提供基础数据,并为精液保存调控机制的研究提供参考.
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Key words
Seminal plasma exosome,Yorkshire boar,miRNA,Target gene,Sperm motility,Sperm apoptosis
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