Biotechnology Bulletin ›› 2022, Vol. 38 ›› Issue (5): 169-174.doi: 10.13560/j.cnki.biotech.bull.1985.2021-1057

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Screening and Identification of miRNA Regulating Porcine E-twenty-six Variant Gene 5

LI Hong-yi(), PENG Guo-liang, XIAO Zheng-zhong, ZHANG Mao()   

  1. Henry Fok College of Biology and Agriculture,Shaoguan University,Shaoguan 512005
  • Online:2022-05-26 Published:2022-06-10
  • Contact: ZHANG Mao E-mail:politician_137@163.com;zm18email@163.com

Abstract:

E-twenty-six Variant Gene 5(ETV5)is a transcription factor that plays key role in the self-renewal and maintenance of spermatogonial stem cells. To screen the miRNAs regulating porcine ETV5 gene,the online analysis software TargetScan and MiRanda were used to predict the miRNAs that regulate ETV5,and dual luciferase activity detection was adapted to verify the screened conserved miRNAs. Then the verified miRNA mimics or inhibitor were transfected into porcine fetal fibroblasts and testicular Sertoli cells respectively,the expression of ETV5 was detected by real time fluorescence quantitative PCR. Concurrently,ETV5 gene was knocked out in the porcine fetal fibroblasts to detect the expression of miR-19. The results showed that miR-19 significantly reduced the activity of luciferase in the cells by binding to the 3`UTR region of ETV5P<0.01). Results of cell transfection demonstrated that miR-19 mimics significantly reduced the expression of ETV5 in the porcine fetal fibroblasts and testicular Sertoli cells(P<0.01),while miR-19 inhibitor led to the opposite result(P<0.01). After knockout of ETV5 gene in the fetal fibroblasts,the expression of the miR-19 significantly increased(P<0.01). In sum,miR-19 may regulate the expression of porcine ETV5 gene,which provides a reference for further research on the effect of miRNA regulating porcine ETV5 gene on porcine reproduction.

Key words: miR-19, porcine, ETV5, testis