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J. Virol., 01 1998, 488-496, Vol 72, No. 1
AB van't Wout, LJ Ran, CL Kuiken, NA Kootstra, ST Pals and H Schuitemaker
We studied the temporal relationship between human immunodeficiency type 1
(HIV-1) quasispecies in tissues and in peripheral blood mononuclear cells
(PBMC) of infected individuals. Sequential PBMC and tissue samples from
various organs obtained at autopsy from three patients who died of
AIDS-related complications were available for analysis. Biological HIV-1
clones were isolated from PBMC samples, and cellular tropism and
syncytium-inducing (SI) capacity were determined. Genomic DNA was isolated
from 1 cm3 of organ tissue, and proviral DNA was amplified by means of PCR
and cloned with the PGEM-T vector system. A 185-bp region encompassing the
third variable domain of the virus envelope, known to influence HIV-1
biological properties, was sequenced. HIV-1 could be amplified from all
PBMC and organ samples, except from liver tissue for two patients. Both SI
and non-syncytium- inducing (NSI) genotypes could be detected in the
different tissues. Tissue-specific quasispecies were observed in brain,
lung, and testis. Lymphoid tissues, such as bone marrow, lymph node, and
spleen, harbored several different variants similar to those detected in
blood in the last PBMC samples. In general, only tissues in which
macrophages are likely to be the main target cell for HIV-1 harbored NSI
HIV-1 sequences that clustered separately. Both SI and NSI sequences that
clustered with sequences from late-stage PBMC were present in other
tissues, which may indicate that the presence of HIV-1 in those tissues is
secondary to lymphocyte infiltration rather than to tissue tropism of HIV-1
itself. These data suggest that the viral reservoir may be limited, which
will have important implications for the success of HIV- 1 eradication.
Copyright © 1998, American Society for Microbiology
Analysis of the temporal relationship between human immunodeficiency virus type 1 quasispecies in sequential blood samples and various organs obtained at autopsy
Department of Clinical Viro-Immunology, Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, University of Amsterdam.
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