China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (11): 3667-3675.doi: 10.16431/j.cnki.1671-7236.2020.11.030

• Preventive Veterinary Medicine • Previous Articles     Next Articles

Review of DNA Vaccine for Avian Influenza

FENG Yaya, GUO Jing, LI Yubao, LIU Cheng, LI Xuyong   

  1. College of Agriculture, Liaocheng University, Liaocheng 252000, China
  • Received:2020-04-05 Online:2020-11-20 Published:2020-11-20

Abstract: Avian influenza (AI) is a kind of avian virulent syndrome caused by avian influenza virus (AIV),which threatens animal and human public health and seriously affects the development of poultry industry in China.Vaccination has always been the most effective means to control the spread of avian influenza virus.Based on the continuous development of genetic engineering technology,a variety of new vaccines have been developed and put into use.Among them,avian influenza DNA vaccine has many advantages,such as high safety,simple preparation,easy storage and transportation.Common HA DNA vaccine,NA DNA vaccine,M DNA vaccine,NP DNA vaccine.Avian influenza DNA vaccine introduces a recombinant plasmid containing the target gene sequence into animal cells to induce a humoral and cellular immune response.In order to improve the immune effect of avian influenza DNA vaccine,researchers at home and abroad have made some achievements in enhancing the transfection efficiency and gene expression level of DNA vaccine by adding appropriate adjuvants,introducing target genes into ideal plasmid vectors and optimizing antigen sequence.Since the development of DNA vaccines,many subtypes of avian influenza DNA vaccines,including H1,H3,H5,H7 and H9 subtypes,have been gradually developed.In 2018,the H5 subtype DNA vaccine developed by Harbin Veterinary Research Institute of The Chinese Academy of Agricultural Sciences obtained the National Class Ⅰ Veterinary Medicine certificate,which is the first DNA vaccine of avian influenza to be approved in China,greatly promoting the development of DNA vaccines.This review mainly discusses the development and innovation of avian influenza DNA vaccine in terms of vector construction,immune mechanism,adjuvant and vector selection,and vaccine research and development,and briefly analyzes its application prospect,in order to provide new ideas and references for researchers to develop new avian influenza vaccine.

Key words: avian influenza; DNA vaccine; immune response

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