home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload Trio 2
/
Shareware Overload Trio Volume 2 (Chestnut CD-ROM).ISO
/
dir26
/
med9406d.zip
/
M9460580.TXT
< prev
next >
Wrap
Text File
|
1994-06-25
|
3KB
|
43 lines
Document 0580
DOCN M9460580
TI HIV-1 gene expression and replication in neuronal and glial cell lines
with immature phenotype: effects of nerve growth factor.
DT 9408
AU Ensoli F; Ensoli B; Thiele CJ; Cell and Molecular Biology Section,
National Cancer Institute,; National Institutes of Health, Bethesda,
Maryland 20892.
SO Virology. 1994 May 1;200(2):668-76. Unique Identifier : AIDSLINE
MED/94233730
AB Encephalopathy and neurological disorders are a major manifestation of
pediatric AIDS. Although HIV-1 can replicate in cells of neuronal and
glial origin, it is yet unclear whether immature neural cells, which are
present during nervous system development, can support HIV-1 replication
and whether neurotrophic factors can modulate HIV-1 gene expression. In
this study we show that a glial cell line with a phenotype closely
resembling immature glial cells is more permissive to HIV-1 infection
and replication than a neuroblastic cell line. After HIV-1 infection or
after transfection of these cells with the HIV-1 LTR-CAT reporter gene
alone or in the presence of Tat, both HIV-1 replication and viral gene
expression progressively decrease in the neuronal cell line, while they
increase in the glial cell line. In both cell types viral gene
expression and replication are augmented by the addition to the cells of
nerve growth factor (NGF) at concentrations which induce neuronal
differentiation. However, these effects are again more evident with the
glial cell type, suggesting that immature glial cells may represent one
of the major targets and reservoirs of HIV-1 in the developing nervous
system. As NGF and Tat act synergistically in inducing HIV-1 gene
expression, these data also suggest that during development the presence
of high levels of neural trophic factors may activate viral replication
and render the CNS more susceptible to the deleterious effects of HIV-1
infection.
DE Cell Differentiation/DRUG EFFECTS Cell Line Comparative Study Gene
Expression/DRUG EFFECTS Gene Products, tat/PHARMACOLOGY Genes,
Reporter Human HIV Long Terminal Repeat/GENETICS HIV-1/*GROWTH &
DEVELOPMENT Nerve Growth Factors/*PHARMACOLOGY Neuroglia/*MICROBIOLOGY
Neurons/*MICROBIOLOGY Phenotype Stem Cells/MICROBIOLOGY
Trans-Activation (Genetics) Virus Replication JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).