The RRE of human immunodeficiency virus type 1 contributes to cell-type-specific viral tropism.
As part of a general program investigating the mechanism of the Rev axis of human immunodeficiency virus type 1 (HIV-1) autoregulation, a series of proviral HIV-1 mutants which differ from the parental HXB2 strain at selected positions within the RRE were constructed. All of the mutations were designed to perturb the RRE by introducing local helix disruptions without altering the coding potential of the overlapping envelope open reading frame. Viral replication in various cell types was monitored by a cell supernatant reverse transcriptase assay and Northern (RNA blot) analysis. All proviral RRE mutants displayed at least some impairment in replication. However, the relative impairment varied drastically among the various cell types tested. This suggests that the RRE may contribute to cell-type-specific viral tropism.
Dayton
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National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892.
Konings
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Lim
S Y
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Hsu
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RK
Butini
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Pantaleo
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G
Dayton
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D000163:Acquired Immunodeficiency Syndrome / Q000382:microbiology*; D001483:Base Sequence; D002460:Cell Line / Q000382:microbiology; D016208:Databases, Factual; D015694:Gene Products, rev / Q000378:metabolism; D015497:HIV-1 / Q000235:genetics / Q000254:growth & development / Q000472:pathogenicity*; D008213:Lymphocyte Activation; D008969:Molecular Sequence Data; D016296:Mutagenesis; D009690:Nucleic Acid Conformation; D011533:Proviruses / Q000235:genetics / Q000254:growth & development / Q000472:pathogenicity*; D012367:RNA, Viral / Q000235:genetics*; D016415:Sequence Alignment; D014771:Virion / Q000302:isolation & purification; D014779:Virus Replication; D054321:rev Gene Products, Human Immunodeficiency Virus
D015694:Gene Products, rev; D012367:RNA, Viral; D054321:rev Gene Products, Human Immunodeficiency Virus