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J Virol, January 1998, p. 876-881, Vol. 72, No. 1
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

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 NonSyncytium-Inducing HIV-1 In Vitro

Kunal Saha,1 Galina Bentsman,1 Leonard Chess,2 and David J. Volsky1,*

Molecular Virology Laboratory, St. Luke's-Roosevelt Hospital Center, College of Physicians & Surgeons, Columbia University, New York, New York 10019,1 and Division of Rheumatology, Department of Medicine, College of Physicians & Surgeons, Columbia University, New York, New York 100322

Received 24 June 1997/Accepted 28 September 1997

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 CD4+ clones with the NSI HIV-1 strain ADA revealed an inverse correlation to beta -chemokine production; clones from nonprogressors were poorly susceptible to ADA replication, but clones from AIDS patients were highly infectable. The resistance to ADA infection in CD4+ clones from nonprogressors could be partially reversed by treatment with anti-beta -chemokine antibodies. These results indicate that CD4+ cells can be protected against NSI-HIV-1 infection in culture through endogenously produced factors, including beta -chemokines, and that beta -chemokine production by CD4+, but not CD8+, T cells may constitute one mechanism of disease-free survival for HIV-1-infected individuals.


* Corresponding author. Mailing address: Molecular Virology Laboratory, 432 W. 58th St., St. Luke's-Roosevelt Hospital Center, New York, NY 10019. Phone: (212) 582-4451. Fax: (212) 582-5027. E-mail: djv4{at}columbia.edu.




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