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Construction of an avian hepatitis E virus replicon expressing heterologous genes and evaluation of its potential as an RNA vaccine platform

  • Moon, Hyun-Woo (Department of Veterinary Microbiology, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University) ;
  • Sung, Haan Woo (Department of Veterinary Microbiology, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University) ;
  • Park, Jeongho (Department of Veterinary Microbiology, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University) ;
  • Kwon, Hyuk Moo (Department of Veterinary Microbiology, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University)
  • Received : 2021.02.08
  • Accepted : 2021.03.22
  • Published : 2021.06.30

Abstract

To evaluate avian hepatitis E virus (aHEV) as an RNA vaccine platform, ORF2 of aHEV was replaced by heterologous genes, such as eGFP and HA-tag, in aHEV infectious cDNA clones. eGFP and HA-tag replicons were expressed in LMH cells. To confirm expression of the heterologous protein, ORF2 was replaced with the antigenic S1 gene of IBV. The IBVS1 replicon was expressed in LMH cells. To our knowledge, this is the first investigation showing the potential as a RNA vaccine platform using an aHEV. In the future, it may be used in the development of RNA vaccines against various pathogens.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2017R1A2B4001847) and 2017 Research Grant from Kangwon National University (No. 520170372).

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