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    J Virol. 1992 Mar;66(3):1809-13.

    Efficient replication of human immunodeficiency virus type 1 requires a threshold level of Rev: potential implications for latency.

    Source

    Department of Medicine, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107.

    Abstract

    The Rev protein of human immunodeficiency virus type 1 (HIV-1) is essential for the expression of the structural genes of HIV-1. To determine whether a functional threshold level of Rev is required to allow efficient HIV-1 replication, CD4-positive HeLa cells, constitutively expressing a Rev-deficient provirus, were transfected with various quantities of a Rev-expressing plasmid. Compared with the quantity of the Rev-producing plasmid transfected, HIV-1 replication was distinctly nonlinear as measured by HIV-1 p24 antigen and HIV-1-specific RNA production. A quantitative RNA polymerase chain reaction (PCR) demonstrated that Rev mRNA expression was linearly correlated with the quantity of Rev-expressing plasmid which was transfected into these cells. These data suggest that a critical threshold of Rev is required for a highly productive HIV-1 infection. This threshold level of Rev may be involved in the generation and maintenance of HIV-1 proviral latency.

    PMID:
    1738210
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC240948
    Free PMC Article

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