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M9610103.TXT
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1996-01-30
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Document 0103
DOCN M9610103
TI Serial passage of microglial SIV results in selection of homogeneous env
quasispecies in the brain.
DT 9601
AU Lane TE; Buchmeier MJ; Watry DD; Jakubowski DB; Fox HS; Department of
Neuropharmacology, Scripps Research Institute, La; Jolla, California
92037, USA.
SO Virology. 1995 Oct 1;212(2):458-65. Unique Identifier : AIDSLINE
GENBANK/U19595
AB The pathogenic effects of HIV include infection of the central nervous
system (CNS) which can result in cognitive and motor dysfunction. Simian
immunodeficiency virus (SIV) infection of rhesus macaques provides an
excellent model of HIV-induced disease. We have achieved a reproducible
infection of the CNS using a stock of virus obtained by serial passage
of microglia-associated SIV. Since the envelope genes of both HIV and
SIV encode determinants important in viral pathogenesis, and the
variability inherent in these viruses provides a molecular footprint of
viral quasispecies, we analyzed the viral env sequences resulting from
this serial passage. SIV env sequences were analyzed by direct PCR
amplification of DNA isolated from microglia from infected animals.
Nucleotide sequence comparison reveals that serial passage of
microglia-associated SIV resulted in divergence from the donor stock of
virus. Furthermore, an enrichment of unique env quasispecies which is
maintained through the serial passage was found in the diseased brains.
DE Amino Acid Sequence Animal Base Sequence Cloning, Molecular
Consensus Sequence/GENETICS DNA, Viral/GENETICS Encephalitis,
Viral/VIROLOGY Genes, env/*GENETICS Lymph Nodes/VIROLOGY Macaca
mulatta Microglia/*VIROLOGY Molecular Sequence Data Sequence
Analysis, DNA Sequence Homology, Amino Acid Serial Passage Simian
Acquired Immunodeficiency Syndrome/*VIROLOGY Support, U.S. Gov't,
P.H.S. SIV/*GENETICS/PATHOGENICITY Variation (Genetics)/GENETICS
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).