Linked Life Data

7585567

Source:http://linkedlifedata.com/resource/pubmed/id/7585567

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
22
pubmed:dateCreated
1995-12-15
pubmed:abstractText
p16INK4a and p15INK4b are cell cycle regulators that specifically bind to and inhibit the cyclin D-dependent kinases, cdk4 and cdk6. Because these genes undergo frequent deletions and/or mutations in various human cancers, we examined the status and expression of the cognate mouse cdk inhibitors in a panel of 29 cell lines, as well as in 12 primary tumors, representing different stages of mouse skin carcinogenesis. Deletion of p16INK4a and/or p15INK4b was seen in 8 of 10 cell lines derived from spindle carcinomas, the most advanced stage of skin carcinogenesis. Five showed deletion of both genes, and three had independent deletions of p16INK4a or p15INK4b, but in those retaining p16INK4a, expression of the protein was not detected. By contrast, none of 19 more differentiated squamous cell lines exhibited such deletions. In several cases, primary tumor DNA was available, and two spindle tumors showed the same deletion pattern as observed in the corresponding cell lines. In apparent contrast, comparison of two clonally related squamous and spindle cell lines derived from a single carcinoma showed unusually high levels of p16INK4a and p15INK4b only in the invasive spindle cells. Therefore, deletion or altered regulation of p16INK4a and p15INK4b occur concomitantly with the loss of differentiation associated with the late spindle stage of tumor progression in mouse skin.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0008-5472
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5168-72
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Deletion and altered regulation of p16INK4a and p15INK4b in undifferentiated mouse skin tumors.
pubmed:affiliation
Cancer Research Campaign Beatson Laboratories, University of Glasgow, Department of Medical Oncology, United Kingdom.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't