China Animal Husbandry and Veterinary Medicine ›› 2024, Vol. 51 ›› Issue (5): 2081-2090.doi: 10.16431/j.cnki.1671-7236.2024.05.029

• Preventive Veterinary Medicine • Previous Articles     Next Articles

Dynamic Changes in Expression of Interferon-stimulated Genes at the Transcriptional Level After Infection with Fowl Adenovirus Serotype-4 in LMH cells

WAN Lijun, WANG Sheng, XIE Zhixun, REN Hongyu, XIE Liji, FAN Qing, LUO Sisi, LI Meng, ZHANG Yanfang, ZENG Tingting, HUANG Jiaoling, ZHANG Minxiu, XIE Zhiqin, LI Xiaofeng, WEI You   

  1. Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning 530001, China
  • Revised:2023-10-12 Online:2024-05-05 Published:2024-04-28

Abstract: 【Objective】 This study was aimed to investigate the changes of interferon (IFN) and interferon-stimulating genes (ISGs) expression in chicken Leghorn male hepatoma (LMH) infected with Fowl adenovirus serotype-4 (FAdV-4),and provide reference basis for the study of the interaction between FAdV-4 and ISGs.【Method】 The experiment was conducted by infecting LMH cells with FAdV-4,observing the cellular lesions and collecting cell samples at 0,12,24,36,48,60,72,84 and 96 h post-infection,and the dynamic change patterns of the expression of IFN-α and IFN-β and ISGs genes at the transcriptional level at different time points after infection were detected by Real-time quantitative PCR.【Result】 The results showed that after FAdV-4 infection of LMH cells,LMH cells showed typical cytopathic lesions at 48 h.It was detected that FAdV-4 proliferated rapidly at 12 h,and peaked at 60 h. Compared with control group,the expression of IFN-α at the transcriptional level was significantly down-regulated after infection (P<0.05).Compared with control group,the expression of IFN-β was significantly down-regulated at 12 and 24 h after infection (P<0.05),and then rapidly and significantly up-regulated to the peak at 36 h (P<0.05),and remained at a high level at 48 h.After that,the expression declined and stabilized,but was still significantly up-regulated compared with control group (P<0.05).The expressions of ISG12,IFIT5 and DDIT4 genes did not change much in the early stage of infection,and reached the peak at 96 h after infection (P<0.05).ZFP313,IFITM3 and Viperin genes did not change much in the early stage of infection,and then rapidly and up-regulated to peak at 36 h (P<0.05),and remained at a high level at 48 h.After that,the expression declined,but was still significantly up-regulated compared with control group(P<0.05).CD47,OAS and PKR genes showed down-regulated expression compared with control group.【Conclusion】 After FAdV-4 infection of LMH cells,IFN and a variety of ISGs showed regular changes at the transcriptional level,which were associated with the replication of the virus in LMH cells,suggesting that these natural immune factors might play an important role in the anti-FAdV-4 viral response.

Key words: Fowl adenovirus serotype-4 (FAdV-4); LMH cells; interferon; interferon-stimulated genes; transcription

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