Document 0141 DOCN M9440141 TI A small element from the Mason-Pfizer monkey virus genome makes human immunodeficiency virus type 1 expression and replication Rev-independent. DT 9404 AU Bray M; Prasad S; Dubay JW; Hunter E; Jeang KT; Rekosh D; Hammarskjold ML; Myles H. Thaler Center for AIDS and Human Retrovirus Research,; University of Virginia, Charlottesville 22908. SO Proc Natl Acad Sci U S A. 1994 Feb 15;91(4):1256-60. Unique Identifier : AIDSLINE MED/94151308 AB Replication of human immunodeficiency virus type 1 (HIV-1) is dependent on the viral Rev protein. This protein acts in concert with the cis-acting rev-responsive element present in intron-containing RNAs to facilitate nuclear export of these RNAs. Here we show that a cis-acting 219-nucleotide sequence from an unrelated simple retrovirus, Mason-Pfizer monkey virus (MPMV), enables Rev-independent HIV-1 replication. This sequence is present in an untranslated region near the 3' end of the MPMV genome. The MPMV element is also able to efficiently substitute for Rev in expression of Gag/Pol and Env proteins from subgenomic constructs. We hypothesize that the MPMV element functions by interacting with a cellular factor that plays a role in mRNA transport analogous to that of the Rev protein. It might be possible to exploit this element in the development of an HIV vaccine. DE Biological Transport Cells, Cultured DNA Mutational Analysis Fusion Proteins, gag-pol/BIOSYNTHESIS Gene Products, env/BIOSYNTHESIS Gene Products, gag/BIOSYNTHESIS Gene Products, rev/*DEFICIENCY/GENETICS/METABOLISM Genome, Viral HIV-1/*GROWTH & DEVELOPMENT Mason-Pfizer Monkey Virus/*GENETICS Polarity of Translation Regulatory Sequences, Nucleic Acid/*GENETICS RNA, Messenger/METABOLISM RNA, Viral/METABOLISM Sequence Deletion Sequence Homology, Nucleic Acid Support, U.S. Gov't, P.H.S. Virus Replication JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).