Long-term culture and fine specificity of human cytotoxic T-lymphocyte clones reactive with human immunodeficiency virus type 1 - PubMed (original) (raw)

Long-term culture and fine specificity of human cytotoxic T-lymphocyte clones reactive with human immunodeficiency virus type 1

B D Walker et al. Proc Natl Acad Sci U S A. 1989 Dec.

Abstract

The definition of human immunodeficiency virus type 1 (HIV-1) immunogenic epitopes is central to the rational design of AIDS vaccine strategies. In this study, we have generated seven HIV-1 reverse transcriptase-specific cytotoxic T-lymphocyte (CTL) clones from the peripheral blood of two seropositive subjects. Epitopes recognized by these CTL clones were identified by using target cells infected with recombinant HIV-1-vaccinia virus vectors expressing truncated reverse transcriptase proteins and further defined by using target cells incubated with overlapping 25-amino acid synthetic reverse transcriptase peptides. Five different CTL epitopes were identified, and in each case recognition was restricted by class I human leukocyte antigens (HLA). Clones maintained specific cytolytic function in continuous culture for up to 11 months, requiring only periodic restimulation with a CD3-specific monoclonal antibody. These results indicate that HIV-1-specific, major histocompatibility class I-restricted CTL recognize multiple epitopes of a single viral gene product in conjunction with different host HLA antigens. In addition, they demonstrate that human virus-specific CTL can be grown in long-term culture without the need for reexposure to viral antigen.

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References

    1. Cell. 1986 Mar 28;44(6):959-68 - PubMed
    1. Antimicrob Agents Chemother. 1989 Jan;33(1):53-7 - PubMed
    1. Science. 1986 Nov 7;234(4777):728-31 - PubMed
    1. Nature. 1987 Jul 23-29;328(6128):345-8 - PubMed
    1. Nature. 1987 Jul 23-29;328(6128):348-51 - PubMed

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