China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (12): 4618-4627.doi: 10.16431/j.cnki.1671-7236.2021.12.030

• Preventive Veterinary Medicine • Previous Articles     Next Articles

Identification of lncRNA-mRNA Regulatory Network of Riboflavin Metabolism in HepG2 Cells Affected by Swine Hepatitis E Virus ORF3 Protein

JIAO Hanwei1,2,3, ZHOU Zhixiong1, LI Mengjuan1, XIAO Yu1, LI Bowen1, GUO Xiaoyi1, ZENG Hui1, GU Guojing1, SHUAI Xuehong1,2,3   

  1. 1. College of Veterinary Medicine, Southwest University, Chongqing 402460, China;
    2. Immunology Research Center, Medical Research Institute, Southwest University, Chongqing 402460, China;
    3. Veterinary Scientific Engineering Research Center, Chongqing 402460, China
  • Received:2021-04-14 Online:2021-12-20 Published:2021-12-02

Abstract: In order to preliminarily identify and explore the lncRNA-mRNA regulatory network of ORF3 protein of swine Hepatitis E virus (HEV) affecting the riboflavin metabolism signal pathway of HepG2, in this study, we constructed the Adenovirus overexpression vector to prepare the high titer Adenovirus, and mediated the overexpression of swine HEV-ORF3 in HepG2 cells.After the overexpression of ORF3 protein was verified by Western blotting, lncRNA high-throughput sequencing was used to screen the differentially expressed lncRNA and predict the targeted genes.GO function and KEGG pathway enrichment analysis was performed for the differentially expressed lncRNA targeted genes, and the lncRNA-mRNA regulatory network related to riboflavin metabolism signal pathway was preliminarily identified.Western blotting showed that the target band appeared at about 12 ku, indicating the successful overexpression of swine HEV-ORF3 in HepG2 cells mediated by Adenovirus.High throughput sequencing of lncRNA showed that 102 differentially expressed lncRNAs were up-regulated and 80 differentially expressed lncRNAs were down regulated.GO function and KEGG pathway enrichment found that lncRNA(MSTRG.13995.2) and lncRNA (MSTRG.1960.1) might be differentially expressed lncRNAs related to riboflavin metabolism signaling pathway, which affected riboflavin metabolism signal pathway by cis regulating their target genes APC-5 and FLAD1, respectively.The results showed that lncRNA(MSTRG.13995.2)-APC5 and lncRNA(MSTRG.1960.1)-FLAD1 might be the lncRNA-mRNA regulatory network that affected the riboflavin metabolism signal pathway of HepG2.

Key words: swine; Hepatitis E virus (HEV); ORF3 protein; HepG2 cells; riboflavin metabolism; lncRNA-mRNA regulatory network

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