PMID: 9420304Jan 7, 1998Paper

Endogenous production of beta-chemokines by CD4+, but not CD8+, T-cell clones correlates with the clinical state of human immunodeficiency virus type 1 (HIV-1)-infected individuals and may be responsible for blocking infection with non-syncytium-inducing HIV-1 in vitro

Journal of Virology
K SahaD J Volsky

Abstract

Recent studies have demonstrated that the beta-chemokines RANTES, MIP-1alpha, and MIP-1beta suppress human immunodeficiency virus type 1 (HIV-1) replication in vitro and may play an important role in protecting exposed but uninfected individuals from HIV-1 infection. However, levels of beta-chemokines in AIDS patients are comparable to and can exceed levels in nonprogressing individuals, indicating that global beta-chemokine production may have little effect on HIV-1 disease progression. We sought to clarify the role of beta-chemokines in nonprogressors and AIDS patients by examination of beta-chemokine production and HIV-1 infection in patient T-lymphocyte clones established by herpesvirus saimiri immortalization. Both CD4+ and CD8+ clones were established, and they resembled primary T cells in their phenotypes and expression of activated T-cell markers. CD4+ T-cell clones from all patients had normal levels of mRNA-encoding CCR5, a coreceptor for non-syncytium-inducing (NSI) HIV-1. CD4+ clones from nonprogressors and CD8+ clones from AIDS patients secreted high levels of RANTES, MIP1alpha, and MIP-1beta. In contrast, CD4+ clones from AIDS patients produced no RANTES and little or no MIP-1alpha or MIP-1beta. The infection of C...Continue Reading

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