High SDF-1 expression in HIV-1 carriers does not correlate with CD8+ T-cell-mediated suppression of viral replication.
In: Virology, Jg. 244 (1998-05-10), Heft 2, S. 467-72
Online
academicJournal
Zugriff:
Stromal cell-derived factor 1 (SDF-1) inhibits T-cell tropic (T-tropic) HIV-1 infection in vitro. In this study, we examined the regulatory role of SDF-1 on HIV-1 replication in peripheral blood mononuclear cells (PBMC) of HIV-infected individuals. We found that the amount of SDF-1 mRNA in freshly isolated PBMC of HIV-1 carriers was higher than in healthy donors. Moreover, PBMC from some asymptomatic carriers (ACs) exhibited high levels of SDF-1 mRNA expression. The level of SDF-1 expression in PBMC did not correlate with the magnitude of CD8+ T-cell-mediated suppression of HIV-1 among ACs SDF-1 inhibited HIV-1 replication at the viral entry step, whereas a single-cycle HIV-1 infection system showed that the major part of the CD8+ T-cell-mediated suppression occurs after intracellular penetration of the virus. Our results suggest that SDF-1 acts as a suppressor of virus replication in a CD8+ T-cell-independent mechanism in HIV-infected individuals.
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High SDF-1 expression in HIV-1 carriers does not correlate with CD8+ T-cell-mediated suppression of viral replication.
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Autor/in / Beteiligte Person: | Ohashi, T ; Arai, M ; Kato, H ; Kubo, M ; Fujii, M ; Yamamoto, N ; Iwamoto, A ; Kannagi, M |
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Zeitschrift: | Virology, Jg. 244 (1998-05-10), Heft 2, S. 467-72 |
Veröffentlichung: | New York, Academic Press., 1998 |
Medientyp: | academicJournal |
ISSN: | 0042-6822 (print) |
DOI: | 10.1006/viro.1998.9151 |
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