Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (10): 2311-2320.DOI: 10.3969/j.issn.1004-1524.20221496

• Animal Science • Previous Articles     Next Articles

Construction and preliminary application of the universal transfer vector in recombination of Bovine herpes virus type 1

DAI Shasha(), MA Xiaojing, WANG Jingsong, TIAN Xingmiao, WANG Jianlin, LI Jidong()   

  1. College of Animal Science, Ningxia University, Yinchuan 750021, China
  • Received:2022-10-26 Online:2023-10-25 Published:2023-10-31

Abstract:

The study aimed to construct a universal transfer vector that could be used for recombination of Bovine herpesvirus type 1 (BHV-1). The vector prPP with bidirectional promoter and two multiple cloning sites was constructed by insertion of another CMV promoter at the reverse site of the pVAX1 CMV promoter. The universal transfer vector prPgP was constructed by putting the green fluorescent protein marker gene downstream the reverse CMV promoter. Using the BHV-1 glycoprotein gE as the recombination site, the gE upstream and downstream homology arm was inserted into two multiple cloning sites of the prPgP vector respectively. Following, the recombinant transfer vector p△gErPgP-E2 was constructed by placing the Bovine viral diarrhea virus(BVDV) E2 gene as exogenous gene under the forward CMV promoter. The plasmid p△gErPgP-E2 was transfected with Madin-Darby Bovine kidney (MDBK) infected with BHV-1 to generate recombinant viruses. The recombinant viruses were screened, purified, identified, and named as rBHV-1-△gE/E2. The report gene GFP and BVDV E2 was expressed normally by fluorescence microscopy. The results showed that the recombinant universal vector prPgP could be convenient for BHV-1 recombination and be used in related research and its vaccine development.

Key words: Bovine herpesvirus type 1, homologous arm, transfer vector, homologous recombination

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