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J Virol, January 1998, p. 876-881, Vol. 72, No. 1
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
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Endogenous Production of
-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
-chemokines RANTES,
MIP-1
, and MIP-1
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
-chemokines in AIDS patients are comparable to
and can exceed levels in nonprogressing individuals, indicating that
global
-chemokine production may have little effect on HIV-1 disease
progression. We sought to clarify the role of
-chemokines in
nonprogressors and AIDS patients by examination of
-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, MIP1
, and MIP-1
. In contrast,
CD4+ clones from AIDS patients produced no RANTES and
little or no MIP-1
or MIP-1
. The infection of CD4+
clones with the NSI HIV-1 strain ADA revealed an inverse correlation to
-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-
-chemokine antibodies. These results indicate that CD4+ cells can be protected against NSI-HIV-1 infection in
culture through endogenously produced factors, including
-chemokines, and that
-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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