Linked Life Data

9305847

Source:http://linkedlifedata.com/resource/pubmed/id/9305847

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6648
pubmed:dateCreated
1997-9-30
pubmed:databankReference
pubmed:abstractText
The inactivation of the p53 gene in a large proportion of human cancers has inspired an intense search for the encoded protein's physiological and biological properties. Expression of p53 induces either a stable growth arrest or programmed cell death (apoptosis). In human colorectal cancers, the growth arrest is dependent on the transcriptional induction of the protein p21WAF1/CIP1 , but the mechanisms underlying the development of p53-dependent apoptosis are largely unknown. As the most well documented biochemical property of p53 is its ability to activate transcription of genes, we examined in detail the transcripts induced by p53 expression before the onset of apoptosis. Of 7,202 transcripts identified, only 14 (0.19%) were found to be markedly increased in p53-expressing cells compared with control cells. Strikingly, many of these genes were predicted to encode proteins that could generate or respond to oxidative stress, including one that is implicated in apoptosis in plant meristems. These observations stimulated additional biochemical and pharmacological experiments suggesting that p53 results in apoptosis through a three-step process: (1) the transcriptional induction of redox-related genes; (2) the formation of reactive oxygen species; and (3) the oxidative degradation of mitochondrial components, culminating in cell death.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0028-0836
pubmed:author
pubmed:issnType
Print
pubmed:day
18
pubmed:volume
389
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
300-5
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
A model for p53-induced apoptosis.
pubmed:affiliation
The Howard Hughes Medical Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't