home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload Trio 2
/
Shareware Overload Trio Volume 2 (Chestnut CD-ROM).ISO
/
dir26
/
med9410p.zip
/
M94A3269.TXT
< prev
next >
Wrap
Text File
|
1994-10-25
|
2KB
|
40 lines
Document 3269
DOCN M94A3269
TI Genetic heterogeneity in vif and vpr regions of HIV-1 in PBMC from
asymptomatic carriers.
DT 9412
AU Kishi M; Zheng YH; Tokunaga K; Bahmani MK; Tateno M; Tateno Y; Oka S;
Kurata T; Kakinuma M; Ikuta K; Inst. Immunol. Sci., Hokkaido Univ.,
Sapporo, Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):114 (abstract no. PA0074). Unique
Identifier : AIDSLINE ICA10/94369306
AB OBJECTIVE: MT-4 cells survived the infection with vif, vpr, or vpu
mutant HIV-1 after transient cytopathicity, suggesting the occurrence of
additional mutation(s) during viral replication. Here, we examined
naturally occurring additional mutations in accessory genes essential
for lead to persistent infection. In addition, similar mutations in
HIV-1 in PBMC derived from asymptomatic carriers (AC) were also
examined. METHODS: Four regions of viral genome, gag, pol endo. to vpr,
5'-half of vif, or env (encompassing the third variable region), were
amplified by PCR, cloned, then sequenced. RESULTS: The survivors
producing infectious, but non-cytopathic, HIV-1 were found to carry
heterogeneous HIV-1 genomes containing marked internal deletions in the
region overlapping vif and vpr and nucleotide substitutions in vif
and/or vpr region. Similar structures were also observed in PBMC
sequentially (every year for 3 years) obtained from two AC. In addition,
PCR analyses of serially diluted PBMC-DNAs from 93 HIV-1 carriers showed
that only 33% in the gag-positive DNAs was positive for the region
overlapping vif and vpr. DISCUSSION AND CONCLUSIONS: The mutations at
vif and/or vpr were often observed in persistentently infected cells and
PBMC from AC. Therefore, these mutations might be important for
reduction of HIV-1 cytopathicity leading to its persistent or latent
infection.
DE Cell Line Genes, env Genes, gag Genes, pol *Genes, vif *Genes, vpr
Human HIV Infections/*MICROBIOLOGY HIV-1/*GENETICS/ISOLATION & PURIF
Leukocytes, Mononuclear/MICROBIOLOGY Mutation Polymerase Chain
Reaction Sequence Deletion MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).