Document 0038 DOCN M9460038 TI A Rev-inducible mutant gag gene stably transferred into T lymphocytes: an approach to gene therapy against human immunodeficiency virus type 1 infection. DT 9408 AU Smythe JA; Sun D; Thomson M; Markham PD; Reitz MS Jr; Gallo RC; Lisziewicz J; Laboratory of Tumor Cell Biology, National Cancer Institute,; National Institutes of Health, Bethesda, MD 20892. SO Proc Natl Acad Sci U S A. 1994 Apr 26;91(9):3657-61. Unique Identifier : AIDSLINE MED/94224800 AB One strategy for somatic gene therapy for human immunodeficiency virus type 1 (HIV-1) infection is based on the regulated expression of dominant negative mutants of the HIV-1 gag gene. To limit expression of the mutant Gag polypeptide to HIV-1-infected cells, we have constructed a replication-defective retroviral vector that contains a Rev-responsive element. By using this construct we have obviated problems that can be associated with constitutive expression of an exogenous gene, an important step toward developing a human therapy. In uncloned T lymphocytes infected (transduced) with this retroviral construct, HIV-1 replication was inhibited by 94% with a concomitant decrease in the cytopathic effects of the virus. In addition, simian immunodeficiency virus (SIV) replication was also shown to be significantly inhibited, suggesting that this mutant Gag protein may have antiviral efficacy against a broad range of primate lentiviruses and that an SIV/macaque model can be used for further in vivo studies. These results have important implications in assessing the potential of somatic gene therapy in the treatment of HIV-1 infection. DE Amino Acid Sequence Base Sequence Gene Expression Regulation, Viral Gene Therapy *Genes, gag *Genes, rev Hela Cells Human HIV Infections/*THERAPY HIV-1/GROWTH & DEVELOPMENT/GENETICS In Vitro Molecular Sequence Data Mutation RNA, Viral/GENETICS Support, Non-U.S. Gov't SIV/GROWTH & DEVELOPMENT/GENETICS T-Lymphocytes/*MICROBIOLOGY Transduction, Genetic Virus Replication JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).