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M9610392.TXT
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1996-01-30
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Document 0392
DOCN M9610392
TI Higher expression levels of alternatively spliced pX mRNA in human T
lymphotropic virus type I asymptomatic carriers positive for antibodies
to p40tax protein.
DT 9601
AU Hirata M; Ikematsu H; Nakashima K; Hayashi J; Kashiwagi S; Department of
General Medicine, Kyushu University Hospital,; Fukuoka, Japan.
SO J Infect Dis. 1995 Oct;172(4):1098-102. Unique Identifier : AIDSLINE
MED/96029383
AB cDNA of human T lymphotropic virus type I (HTLV-I) pX gene mRNA
expressed in peripheral blood lymphocytes of asymptomatic carriers was
sequenced. One cDNA clone contained a novel splicing acceptor site,
indicating an unidentified form of pX mRNA: pX delta 17 delta 37. All 21
asymptomatic carriers expressed some level of alternatively spliced pX
mRNA (pX, pX delta 17, p21rex, orfII, or pX delta 17 delta 37). pX and
pX delta 17 were the dominant mRNA species among the five pX mRNAs. All
pX mRNAs but orfII correlated significantly with amounts of provirus DNA
(P < .05). Levels of provirus DNA and pX mRNAs were significantly higher
in anti-p40tax-positive carriers than in negative ones. These
observations suggest that the pX mRNAs are expressed ubiquitously, with
a complex pattern of splicing, and that the presence of anti-p40tax may
serve as a marker for a higher virus load and viral replication levels
in asymptomatic HTLV-I carriers.
DE Aged Aged, 80 and over *Alternative Splicing Base Sequence *Carrier
State Cloning, Molecular Comparative Study DNA,
Complementary/GENETICS DNA, Viral/BLOOD Female Gene Products,
tax/IMMUNOLOGY Human HTLV-I Antibodies/*BLOOD HTLV-I
Infections/*BLOOD/EPIDEMIOLOGY/IMMUNOLOGY Japan/EPIDEMIOLOGY
Lymphocytes/VIROLOGY Male Middle Age Molecular Sequence Data
Proviruses/ISOLATION & PURIF Retroviridae Proteins, Oncogenic/*GENETICS
RNA, Messenger/BLOOD Sequence Analysis, DNA JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).