Reciprocal modulations between p53 and Tat of human immunodeficiency virus type 1.

Li, C J; Wang, C; Friedman, D J; Pardee, A B · Proc Natl Acad Sci U S A · 1995

basic_science · Level V

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Abstract

Infection by human immunodeficiency virus type 1 (HIV-1) causes acquired immunodeficiency syndrome (AIDS) after a long clinical latency. This disease is associated with a spectrum of cancers. Here we report that wild-type p53 is a potent suppressor of Tat, a major transactivator of HIV-1. Reciprocally, Tat inhibits the transcription of p53. Downregulation of p53 by upregulated tat may be important for the establishment of productive viral infection in a cell and also may be involved in the development of AIDS-related malignancies.

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