Biotechnology Bulletin ›› 2022, Vol. 38 ›› Issue (5): 159-168.doi: 10.13560/j.cnki.biotech.bull.1985.2021-1071

Previous Articles     Next Articles

Expression and Functional Analysis of miR-665 in Bovine Mammary Epithelial Cell Inflammation

LI Yu-hang1,2(), WANG Xing-ping1,2(), YANG Jian1,2, LUORENG Zhuo-ma1,2, REN Qian-qian1,2, WEI Da-wei1,2, MA Yun1,2   

  1. 1. School of Agriculture,Ningxia University,Yinchuan 750021
    2. Key Laboratory of Ruminant Molecular Cell Breeding,Ningxia Hui Autonomous Region,Yinchuan 750021
  • Received:2021-08-20 Online:2022-05-26 Published:2022-06-10
  • Contact: WANG Xing-ping E-mail:1429692080@qq.com;wxp@nxu.edu.cn

Abstract:

In order to explore the expression and function of miR-665 in bovine mammary epithelial cell inflammation,lipopolysaccharide(LPS)was used to induce bovine mammary epithelial cell inflammation,qPCR technology was applied to detect the expression levels of miR-665 and its potential target mRNA at 0,3,6 and 12 h of LPS-induced. Bioinformatics method was adapted to conduct the conserved miR-665,target gene prediction,KEGG and GO function enrichment analysis. The results showed that miR-665 was highly conserved in many species,such as Bos taurus,Homo sapiens and Mus musculus. Compared with 0 h,the expression levels of miR-665 were significantly up-regulated at 3,6 and 12 h of LPS-induced inflammation in the mammary epithelial cells,while the expression levels of MAPK14,MAP3K2,SMAD2,and SP1 genes related to inflammation promotion were in an opposite trend. The predicted target genes of miR-665 and the enrichment results of KEGG and GO functions showed that miR-665 may play its role by participating in MAPK and Th17 cell differentiation,tumor necrosis factor and other signaling pathways. It is speculated that miR-665 may have an inhibitory effect on the LPS-induced inflammation of mammary epithelial cells.

Key words: dairy cow, miR-665, mammary epithelial cell, mastitis, bioinformatics analysis