Cell Cycle Arrest by Vpr in HIV-1 Virions and Insensitivity to Antiretroviral Agents
- 10 July 1998
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 281 (5374) , 266-269
- https://doi.org/10.1126/science.281.5374.266
Abstract
Expression of human immunodeficiency virus–type 1 (HIV-1) Vpr after productive infection of T cells induces cell cycle arrest in the G2 phase of the cell cycle. In the absence of de novo expression, HIV-1 Vpr packaged into virions still induced cell cycle arrest. Naturally noninfectious virus or virus rendered defective for infection by reverse transcriptase or protease inhibitors were capable of inducing Vpr-mediated cell cycle arrest. These results suggest a model whereby both infectious and noninfectious virions in vivo, such as those surrounding follicular dendritic cells, participate in immune suppression.Keywords
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