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Construction of human CD81 eukaryotic expression vector and expression of the gene segment in COS-7 cell line
Qiu-Ping Liu, Zhan-Sheng Jia, De-Wei Du, Guang-Yu Li, Lei Pan, Xing Wei, Xin-Dong Luo, Quan-Chu Wang
Qiu-Ping Liu, Zhan-Sheng Jia, De-Wei Du, Guang-Yu Li, Lei Pan, Xing Wei, Xin-Dong Luo, Quan-Chu Wang, The Center of Diagnosis and Treatment for Infectious Diseases of PLA, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, Shannxi Province, China.
Supported by: National Natural Science Foundation of China, No. 30070687.
Correspondence to: Dr. Zhan-Sheng Jia, Center of Diagnosis and Treatment for Infectious Diseases of PLA, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, Shannxi Province, China. jiazsh@fmmu.edu.cn
Received: September 15, 2003 Revised: October 1, 2003 Accepted: October 22, 2003 Published online: March 15, 2004
AIM: To construct a human CD81 eukaryotic expression vector and to analyze the expression of CD81 in COS-7 cells.
METHODS: CD81 gene from the pMD18-T-CD81 vector with double-enzyme digestion was cloned into the pVAX1 eukaryotic expression vector, named pVAX1-CD81. The recombinant vector pVAX1-CD81 and pVAX1 as controls were transfected into COS-7 cells by lipofectamine, and the transient expression product on the transfected cells was analyzed with anti-CD81 monoclonal antibody by indirect immunofluorescence assay (IFA).
RESULTS: The identification of the eukaryotic expression vector pVAX1-CD81 by PCR and restriction enzyme analysis showed that CD81 gene was rightly inserted into the vector; and the product of the CD81 gene was successfully expressed on surface of COS-7 cells.
CONCLUSION: The eukaryotic expression vector with CD81 gene is constructed and efficiently expressed in COS-7 cells. The results indicate that the transfected CD81 cells will need to further studies on the roles of CD81 in the process of HCV infection and entrance to cells.
Key Words: N/A
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