›› 2020, Vol. 32 ›› Issue (9): 1564-1573.DOI: 10.3969/j.issn.1004-1524.2020.09.05

• Animal Science • Previous Articles     Next Articles

Tissue expression and significant target genes analysis of swine miR-204

WANG Wei1, GUN Shuangbao1,2,*, WANG Pengfei1, HUANG Xiaoyu1, XIE Kaihui1, LUO Ruirui1, GAO Xiaoli1, ZHANG Bo1, YAN Zunqiang1, YANG Qiaoli1, MA Yanping3   

  1. 1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    2. Gansu Research Center for Swine Production Engineering and Technology, Lanzhou 730070, China;
    3. Gansu Agricultural University Library, Lanzhou 730070, China
  • Received:2020-02-17 Online:2020-09-25 Published:2020-10-10

Abstract: Based on the earlier research, miR-204 was screened out with significantly up-regulated expression in the resistance and susceptibility group for piglets infected with Clostridium perfringens type C by using Illumina Hiseq 4000 high-throughput sequencing technology. In the present study, real-time quantitative PCR was used to detect the miR-204 expression in different tissues of piglets at 7-day-old. Meanwhile the mature gene sequences was analyzed using MEGA7.0 software, and target genes were predicted using TargetScan, miRDB, and PicTar. Then, the online software DAVID was used to perform gene ontology and KEGG pathway enrichment analysis of target genes, and qRT-PCR method was used to verify the targeted relationship of the selected target genes in porcine intestinal epithelial cells (IPEC-J2). The results showed that miR-204 was highly expressed in kidney, liver, thymus, lymph, duodenum and ileum tissues of 7-day-old piglets, and its mature gene sequences was highly conserved among vertebrates. There were 114 common target genes predicted by the three softwares, and these target genes were significantly (P<0.05) enriched in 15 GO functions and 13 signaling pathways. Combined with the previously obtained resistance genes, the four key target genes nuclear receptor subfamily 3 group C member 1(NR3C1), Silence information regulator 1 (SIRT1), BCL2 like 2(BCL2L2) and Discs, large homolog 5(DLG5) were screened. After transfection of miR-204 mimics, the target genes SIRT1, BCL2L2 and DLG5 were significantly (P<0.01)down-regulated. In summary, miR-204 is an important factor involved in regulating the piglets' resistance caused by Clostridium perfringens type C infection. The genes SIRT1, BCL2L2, and DLG5 may be key target genes of miR-204, and the further study should be conducted to testify their functions.

Key words: pig (Sus scrofa), miR-204, tissue expression, target gene, Clostridium perfringens

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