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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zhang, X. K. Pfahl, M. Hobbs, P. D. Lee, M. O. Dawson, M. I. |
| Description | Author Affiliation: Lee MO ( Cancer Center, La Jolla Cancer Research Foundation, CA 92037.); |
| Abstract | Retinoids regulate a broad range of biological processes and affect cell growth and differentiation of many cell types, including the immune system. Recently, it was reported that human immunodeficiency virus type 1 (HIV-1) expression in macrophages is enhanced by retinoic acid (RA). Retinoid signals are mediated by the RA receptors (RARs) and retinoid X receptors (RXRs) that bind to specific RA responsive elements (RAREs) in the promoter region of susceptible genes. Here, we report on a RARE in the long terminal repeat (LTR) region that allows activation of the HIV-1 LTR. The RARE is composed of two consensus RARE half-sites (A/GGGTCA) arranged as a palindrome separated by 9 nucleotides and is activated by both RAR/RXR heterodimers and RXR homodimers. We show that the COUP (chicken ovalbumin upstream promoter) orphan receptors also bind to the HIV-1 RARE and repress the retinoid response of the HIV-1 RARE or the HIV-1 LTR. Furthermore, a newly discovered synthetic retinoid is shown to be a potent inhibitor of retinoid-induced activation of the HIV-1 RARE. These observations suggest additional approaches for the inhibition of HIV replication. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 12 |
| Volume Number | 91 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1994-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Gene Expression Regulation, Viral Drug Effects HIV Long Terminal Repeat Genetics HIV-1 Promoter Regions, Genetic Receptors, Retinoic Acid Antagonists & Inhibitors Retinoids Pharmacology Animals Cell Line Cercopithecus Aethiops Molecular Sequence Data Ovalbumin RNA, Messenger Virus Replication Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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