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  • Title: Induced gene expression of the hypusine-containing protein eukaryotic initiation factor 5A in activated human T lymphocytes.
    Author: Bevec D, Klier H, Holter W, Tschachler E, Valent P, Lottspeich F, Baumruker T, Hauber J.
    Journal: Proc Natl Acad Sci U S A; 1994 Nov 08; 91(23):10829-33. PubMed ID: 7971969.
    Abstract:
    The hypusine-containing protein eukaryotic initiation factor 5A (eIF-5A) is a cellular cofactor critically required for the function of the Rev transactivator protein of human immunodeficiency virus type 1 (HIV-1). eIF-5A localizes in the nuclear and cytoplasmic compartments of mammalian cells, suggesting possible activities on the level of regulated mRNA transport and/or protein translation. In this report we show that eIF-5A gene expression is constitutively low but inducible with T-lymphocyte-specific stimuli in human peripheral blood mononuclear cells (PBMCs) of healthy individuals. In contrast, eIF-5A is constitutively expressed at high levels in human cell lines as well as in various human organs. Comparison of eIF-5A levels in the PBMCs of uninfected and HIV-1-infected donors shows a significant upregulation of eIF-5A gene expression in the PBMCs of HIV-1 patients, compatible with a possible role of eIF-5A in HIV-1 replication during T-cell activation.
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