Linked Life Data

9789064

Source:http://linkedlifedata.com/resource/pubmed/id/9789064

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
22
pubmed:dateCreated
1998-11-24
pubmed:abstractText
The Ink4a/Arf locus encodes p16(Ink4a) and p19(Arf) and is among the most frequently mutated tumor suppressor loci in human cancer. In mice, many of these effects appear to be mediated by interactions between p19(Arf) and the p53 tumor-suppressor protein. Because Tp53 mutations are a common feature of the multistep pre-B cell transformation process mediated by Abelson murine leukemia virus (Ab-MLV), we examined the possibility that proteins encoded by the Ink4a/Arf locus also play a role in Abelson virus transformation. Analyses of primary transformants revealed that both p16(Ink4a) and p19(Arf) are expressed in many of the cells as they emerge from the apoptotic crisis that characterizes the transformation process. Analyses of primary transformants from Ink4a/Arf null mice revealed that these cells bypassed crisis. Because expression of p19(Arf) but not p16 (Ink4a) induced apoptosis in Ab-MLV-transformed pre-B cells, p19(Arf) appears to be responsible for these events. Consistent with the link between p19(Arf) and p53, Ink4a/Arf expression correlates with or precedes the emergence of cells expressing mutant p53. These data demonstrate that p19(Arf) is an important part of the cellular defense mounted against transforming signals from the Abl oncoprotein and provide direct evidence that the p19(Arf)-p53 regulatory loop plays an important role in lymphoma induction.
pubmed:grant
pubmed:commentsCorrections
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pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0027-8424
pubmed:author
pubmed:issnType
Print
pubmed:day
27
pubmed:volume
95
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
13194-9
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
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