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J. Virol., Feb 1995, 882-888, Vol 69, No. 2
ME Rogel, LI Wu and M Emerman
Human immunodeficiency virus type 1 (HIV-1) is a retrovirus that can cause
extensive cytopathicity in T cells. However, long-term productive infection
of T-cell lines has been described. Here we show that although Vpr has no
effect on the initial cytopathic effect of HIV-1, viruses that contain an
intact vpr gene are unable to establish a chronic infection of T cells.
However, virus with a mutated vpr gene can readily establish such long-term
cultures. The effect of Vpr is independent of the env gene and the nef
gene. Furthermore, expression of Vpr alone affects the progression of cells
in the cell cycle. These results suggest that HIV-1 has evolved a viral
gene to prevent chronic infection of T cells.
Copyright © 1995, American Society for Microbiology
The human immunodeficiency virus type 1 vpr gene prevents cell proliferation during chronic infection
Program in Molecular Medicine, Fred Hutchinson Cancer Research Center, Seattle, Washington 98104.
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