Frontiers in Cellular and Infection Microbiology (Mar 2023)

A novel recombinant serotype 4 fowl adenovirus expressing fiber-2 protein of duck adenovirus 3

  • Yiwen Guo,
  • Yiwen Guo,
  • Yiwen Guo,
  • Yiwen Guo,
  • Yun Lin,
  • Yun Lin,
  • Yun Lin,
  • Quan Xie,
  • Quan Xie,
  • Quan Xie,
  • Quan Xie,
  • Wenyuan Zhang,
  • Wenyuan Zhang,
  • Wenyuan Zhang,
  • Wenyuan Zhang,
  • Zhenqi Xu,
  • Zhenqi Xu,
  • Zhenqi Xu,
  • Zhenqi Xu,
  • Yifei Chao,
  • Yifei Chao,
  • Yifei Chao,
  • Yifei Chao,
  • Xudong Cao,
  • Xudong Cao,
  • Xudong Cao,
  • Xudong Cao,
  • Huiru Jiang,
  • Huiru Jiang,
  • Huiru Jiang,
  • Huiru Jiang,
  • Han Li,
  • Han Li,
  • Han Li,
  • Han Li,
  • Tuofan Li,
  • Tuofan Li,
  • Tuofan Li,
  • Tuofan Li,
  • Zhimin Wan,
  • Zhimin Wan,
  • Zhimin Wan,
  • Zhimin Wan,
  • Hongxia Shao,
  • Hongxia Shao,
  • Hongxia Shao,
  • Hongxia Shao,
  • Aijian Qin,
  • Aijian Qin,
  • Aijian Qin,
  • Aijian Qin,
  • Jianqiang Ye,
  • Jianqiang Ye,
  • Jianqiang Ye,
  • Jianqiang Ye

DOI
https://doi.org/10.3389/fcimb.2023.1177866
Journal volume & issue
Vol. 13

Abstract

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Recently, the highly pathogenic serotype 4 fowl adenovirus (FAdV-4) and duck adenovirus 3 (DAdV-3) were outbroken and widespread, causing substantial economic losses to the duck industry. Therefore, there is an urgent need to generate a recombinant genetic engineering vaccine candidate against both FAdV-4 and DAdV-3. In this study, a novel recombinant FAdV-4 expressing the Fiber-2 protein of DAdV-3, designated as rFAdV-4-Fiber-2/DAdV-3, was generated based on CRISPR/Cas9 and Cre-LoxP systems. Indirect immunofluorescence assay (IFA) and western blot (WB) showed that the Fiber-2 protein of DAdV-3 in rFAdV-4-Fiber-2/DAdV-3 was expressed successfully. Moreover, the growth curve revealed that rFAdV-4-Fiber-2/DAdV-3 replicated efficiently in LMH cells and even showed a stronger replication ability compared to the wild type FAdV-4. The generation of the recombinant rFAdV-4-Fiber-2/DAdV-3 provides a potential vaccine candidate against both FAdV-4 and DAdV-3.

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