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A quantitative assay for measuring of bovine immunodeficiency virus using a luciferase-based indicator cell line

  • Published:
Virologica Sinica

Abstract

In order to quantitate the bovine immunodeficiency virus (BIV) infection in vitro, a BIV indicator cell line (BIVL) was established by transfecting baby hamster kidney cells with reporter plasmids containing the firefly luciferase gene driven by a BIV long terminal repeat promoter. The BIV activates promoter activity of the LTR to express luciferase upon infection. BIV infection could therefore by quantified by detection of luciferase activity. Compared to standard assays used to detect BIV infection, the BIVL-based assay is 10 times more sensitive than the the CPE-based assay, and has similar sensitivity with the viral capsid protein Western blot assay. BIV indicator cell line could detect BIV infection specifically. Luciferase activity of BIV infected BIVL cells showed a time dependent manner, and 60 h post infection is the optimal time to detect BIV infection. Luciferase activity of BIVL cells correlates with the BIV capsid protein expression. Moreover, a linear relationship was found between MOI and the activated intensity of luciferase expression. In brief, the BIV indicator cell line is an easy, robust and quantitive method for monitoring BIV infection.

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Correspondence to Wen-tao Qiao.

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Foundation items: The General Foundation of Tianjin Science Committee for Applied Basic Research (08JCZDJC21000) and Chinese Ministry of Education (30770081)

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Yao, X., Guo, Hy., Liu, C. et al. A quantitative assay for measuring of bovine immunodeficiency virus using a luciferase-based indicator cell line. Virol. Sin. 25, 137–144 (2010). https://doi.org/10.1007/s12250-010-3109-1

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  • DOI: https://doi.org/10.1007/s12250-010-3109-1

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