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M9630395.TXT
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1996-02-27
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Document 0395
DOCN M9630395
TI Analysis of a novel defective HTLV-I provirus and detection of a new
HTLV-I-induced cellular transcript.
DT 9603
AU Kubota S; Furuta RA; Siomi H; Maki M; Hatanaka M; Laboratory of Human
Tumer Viruses, Kyoto University, Japan.
SO FEBS Lett. 1995 Nov 13;375(1-2):31-6. Unique Identifier : AIDSLINE
GENBANK/X84993
AB HTLV-I generally integrates at least one full-length copy in adult
T-cell leukemia (ATL) cells. A group of patients without full-length
provirus have a unique conserved truncation of the provirus which
retains env-pX-3'LTR. Tumor cells of a patient from this group were
genetically analyzed. Analysis of the 5' and 3' cellular flanking region
adjacent to the provirus suggest that the defective provirus was
integrated immediately downstream of a promoter of an unknown cellular
gene. The activity of the promoter was weak but was responsive to
Tax-like HTLV-I LTR. The provirus may have utilized it as a substitute
for the 5'LTR and thus 3'LTR may have become an alternative promoter for
the cellular gene, which may give similar viral-cellular interactions to
that of general cases with full-length proviruses. Surprisingly, the 3'
cellular flanking region which is thought to be controlled originally by
the promoter is constitutively expressed specifically in an HTLV-I
producing ATL cell line HUT1O2G, in which the corresponding region is
not modified by provirus. The detection of this HTLV-I-induced
transcript provides a probe to find an HTLV-I inducible unknown cellular
gene that may be related to the pathogenesis of ATL.
DE Adult Aged Animal Base Sequence Cell Line Cercopithecus aethiops
Chloramphenicol Acetyltransferase/BIOSYNTHESIS/METABOLISM Conserved
Sequence Defective Viruses/*GENETICS/METABOLISM Genes, env Human
HTLV-I/*GENETICS/METABOLISM Kidney Leukemia, T-Cell/GENETICS/*VIROLOGY
Middle Age Molecular Sequence Data Plasmids
Proviruses/GENETICS/METABOLISM Repetitive Sequences, Nucleic Acid
Restriction Mapping *Transcription, Genetic Transfection Tumor Cells,
Cultured *Virus Integration JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).