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Journal of Virology, January 2002, p. 912-917, Vol. 76, No. 2
0022-538X/01/$04.00+0     DOI: 10.1128/JVI.76.2.912-917.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Murine Retroviral Pseudotype Virus Containing Hepatitis B Virus Large and Small Surface Antigens Confers Specific Tropism for Primary Human Hepatocytes: a Potential Liver-Specific Targeting System

Vicky M.-H. Sung1 and Michael M. C. Lai1,2*

Department of Molecular Microbiology and Immunology,1 Howard Hughes Medical Institute, Keck School of Medicine, University of Southern California, Los Angeles, California 900332

Received 26 June 2001/ Accepted 9 October 2001

We have developed a system for producing murine leukemia virus (MLV) pseudotyped with human hepatitis B virus (HBV) large (L) and small (S) surface antigens (HBsAg) for targeting primary human hepatocytes. Using the MLV(HBV) pseudotype virus containing a ß-galactosidase reporter gene, we demonstrated that this pseudotype virus exhibits strict tropism for primary human hepatocytes, similar to the natural target cell specificity of HBV. It does not infect any of the established tissue culture cell lines, including human hepatoma cell lines (HepG2 and Huh-7), or rat primary hepatocytes. The infectivity of MLV(HBV) for human hepatocytes was inhibited by anti-HBs antibody. The L form of HBsAg was both necessary and sufficient for virus infectivity, but the presence of both L and S forms enhanced the surface expression of HBsAg and thus increased virus production. The middle form of HBsAg was not necessary. This pseudotype virus bypasses the requirement for the liver-specific transcription factors for HBV replication, enabling direct study of HBV tissue tropism conferred by the viral envelope proteins. This virus also offers a potential liver-specific targeting system for gene therapy.

* Corresponding author. Mailing address: Department of Molecular Microbiology and Immunology, University of Southern California School of Medicine, 2011 Zonal Ave., Los Angeles, CA 90033. Phone: (323) 442-1748. Fax: (323) 342-9555. E-mail: michlai{at}hsc.usc.edu.

Journal of Virology, January 2002, p. 912-917, Vol. 76, No. 2
0022-538X/01/$04.00+0     DOI: 10.1128/JVI.76.2.912-917.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Chai, N., Chang, H. E., Nicolas, E., Gudima, S., Chang, J., Taylor, J. (2007). Assembly of Hepatitis B Virus Envelope Proteins onto a Lentivirus Pseudotype That Infects Primary Human Hepatocytes. J. Virol. 81: 10897-10904 [Abstract] [Full Text]  
  • Saha, M. N., Tanaka, A., Jinno-Oue, A., Shimizu, N., Tamura, K., Shinagawa, M., Chiba, J., Hoshino, H. (2005). Formation of Vesicular Stomatitis Virus Pseudotypes Bearing Surface Proteins of Hepatitis B Virus. J. Virol. 79: 12566-12574 [Abstract] [Full Text]  
  • Bartosch, B., Dubuisson, J., Cosset, F.-L. (2003). Infectious Hepatitis C Virus Pseudo-particles Containing Functional E1-E2 Envelope Protein Complexes. JEM 197: 633-642 [Abstract] [Full Text]  
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