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Journal of Virology, May 2000, p. 4505-4511, Vol. 74, No. 10
Experimental Immunology Branch, National
Cancer Institute, National Institutes of Health,
Bethesda,1 andIntramural Research
Support Program, SAIC Frederick, NCI-FCRDC,
Frederick,3 Maryland; Laboratory of
Viral Pathogenesis, Northwestern University Medical School, Chicago,
Illinois2; and Wilford Hall Medical
Center, Lackland AFB, Texas4
Received 27 September 1999/Accepted 11 February 2000
It is now recognized that, in addition to drug-mediated therapies
against human immunodeficiency virus type 1 (HIV-1), the immune system
can exert antiviral effects via CD8+ T-cell-generated
anti-HIV factors. This study demonstrates that (i) supernatants from
peripheral blood mononuclear cells (PBMC) stimulated with influenza A
virus inhibit replication of CCR5- and CXCR4-tropic HIV-1 isolates
prior to reverse transcription; (ii) the HIV-suppressive supernatants
can be generated by CD4- or CD8-depleted PBMC; (iii) this anti-HIV
activity is partially due to alpha interferon (IFN-
0022-538X/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Inhibition of Human Immunodeficiency Virus Type 1 Replication prior to Reverse Transcription by Influenza Virus
Stimulation
), but not to
IFN-
, IFN-
, the
-chemokines MIP-1
, MIP-1
, and RANTES, or
interleukin-16; (iv) the anti-HIV activity is generated equally well by
PBMC cultured with either infectious or UV-inactivated influenza A
virus; and (v) the antiviral activity can be generated by influenza
A-stimulated PBMC from HIV-infected individuals. These findings
represent a novel mechanism for inhibition of HIV-1 replication that
differs from the previously described CD8 anti-HIV factors (MIP-1
,
MIP-1
, RANTES, and CD8 antiviral factor).
*
Corresponding author. Mailing address: Experimental
Immunology Branch, National Institutes of Health, NCI, Bldg. 10, Rm.
4B36, Bethesda, MD 20892. Phone: (301) 402-3246. Fax: (301) 402-3643. E-mail: shearerg{at}exchange.nih.gov.
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