›› 2019, Vol. 46 ›› Issue (7): 2045-2052.doi: 10.16431/j.cnki.1671-7236.2019.07.020

• Genetics and Breeding • Previous Articles     Next Articles

Study on the Role of lncRNA in the Process of Japanese Encephalitis Virus Infecting PK15 Cells

DU Chengtao, WANG Han, YANG Songbai, LI Xiangchen, ZHOU Xiaolong, ZHAO Ayong   

  1. College of Animal Science and Technology, Zhejiang A & F University, Lin'an 311300, China
  • Received:2019-01-23 Online:2019-07-20 Published:2019-07-22

Abstract:

The aim of this study was to initially explore the proliferation of Japanese encephalitis virus (JEV) infected with PK15 cells,screen the lncRNAs associated with viral infections,and predict its subcellular localization and target genes.The expression of viral structural protein E was detected by immunofluorescence,the proliferation of virus in PK15 cells was detected by TCID50 method,and Real-time PCR was used to detect the expression level of lncRNA after viral infection.Subcellular localization of lncRNA was carried out in the NONCODE database,target gene prediction and signal pathway analysis were performed by starBase,NONCODE,KEGG and other databases.The results showed that after infection of PK15 cells by JEV,the viral titer increased exponentially from 24 to 36 h,and the virus titer reached 10-5.75 TCID50/mL at 36 h after infection.There was no significant change in the expression of lncRNA A,B and C in PK15 cells after 12 h of infection (P>0.05),and the expression level of lncRNA D was extremely significantly decreased (P<0.01).The expression levels of lncRNA A,B and C increased extremely significantly after 24,36 and 48 h of infection (P<0.01),and the expression level of lncRNA D extremely significantly decreased (P<0.01).lncRNA A was mainly localized in the cytosol,lncRNA B was distributed in the nucleus and cytoplasm,lncRNA C was mainly located in the cytoplasm and might also be distributed in the nucleus,lncRNA D might be widely distributed in the cell.Through target gene prediction and signal pathway analysis,the target genes of lncRNA A,B and C were mainly OAS1,OAS2,OASL and COX1,etc.The target genes of lncRNA D were mainly DST,ND1,ND2,ND4 and so on.Signal pathway analysis revealed that lncRNA might participate in the proliferation process after viral infection through signaling pathways such as TNF,NF-κB and TLR.This study laid a foundation for further exploration of the effect of host cell lncRNA on viral proliferation.

Key words: lncRNA; PK15 cells; Japanese encephalitis virus (JEV); proliferation

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