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M9640611.TXT
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1996-03-04
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Document 0611
DOCN M9640611
TI Induction of the WAF1/CIP1 protein and apoptosis in human T-cell
leukemia virus type I-transformed lymphocytes after treatment with
adriamycin by using a p53-independent pathway.
DT 9604
AU Gartenhaus RB; Wang P; Hoffmann P; Department of Medicine, Long Island
Jewish Medical Center, Albert; Einstein College of Medicine, New Hyde
Park, NY 11040, USA.
SO Proc Natl Acad Sci U S A. 1996 Jan 9;93(1):265-8. Unique Identifier :
AIDSLINE MED/96133918
AB The WAF1/CIP1 protein has been identified as a downstream mediator of
the tumor suppressor p53 in regulating cell cycle progression through a
G1-phase check-point. Recent work has implicated the functional status
of p53 as a critical determinant in the apoptotic response of certain
cell lines to DNA damaging agents. By using human T-cell leukemia virus
type I-transformed lymphoid cell lines that differ in their level and
function of wild-type p53, we investigated the induction of WAF1/CIP1
and apoptosis after exposure to Adriamycin, a genotoxic agent. We found
that regardless of the p53 status in these cell lines, WAF1/CIP1 RNA was
rapidly induced in response to Adriamycin treatment. An elevated level
of WAF1/CIP1 protein was observed as well. Additionally, we demonstrated
that apoptosis was induced in all cell lines analyzed despite some
having functionally inactive p53 protein. Our data suggest that a
p53-independent pathway may play a role in the apoptotic response
observed in some cell lines after exposure to DNA damaging agents.
DE Antibiotics, Anthracycline/*PHARMACOLOGY Apoptosis/*DRUG EFFECTS Base
Sequence Cell Transformation, Viral Cells, Cultured
Cyclins/*BIOSYNTHESIS Doxorubicin/*PHARMACOLOGY DNA Damage DNA
Primers/CHEMISTRY Human HTLV-I Lymphocytes/*MICROBIOLOGY/PATHOLOGY
Molecular Sequence Data Protein p53/PHYSIOLOGY Support, Non-U.S. Gov't
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).