Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1998-3-13
pubmed:abstractText
The p16INK4a (alpha and beta form) and p15INK4b genes were analysed for homozygous deletion, hypermethylation and point mutation in B6C3F1 mouse lymphomas induced by 2',3'-dideoxycytidine or 1,3-butadiene. Although the p16INK4a-alpha gene appeared normal in DNA from 2',3'-dideoxycytidine-induced lymphomas, Southern analyses revealed homozygous deletions or rearrangements of the p16INK4a-beta and/or p15INK4b genes in four of 16 tumours. Surprisingly, two of these lymphomas showed exclusive deletions of the p16INK4a EIbeta exon. The p15INK4b promoter region was hypermethylated in two additional 2',3'-dideoxycytidine-induced lymphomas. In contrast, homozygous deletions spanning the p16INK4a and p15INK4b loci were observed in only two of 31 1,3-butadiene-induced tumours. Thus, these cyclin dependent kinase inhibitor genes may play a significant role in chemically induced mouse lymphomas and support the contention of tumour suppressor activity for the p19ARF protein encoded by the p16INK4a-beta gene. Different genetic pathways may be involved in the development of these chemically induced tumours since we have previously shown that mutations in p53 and ras genes are common in 1,3-butadiene- but not 2',3'-dideoxycytidine-induced lymphomas.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0950-9232
pubmed:author
pubmed:issnType
Print
pubmed:day
12
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
803-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:9488045-Animals, pubmed-meshheading:9488045-Butadienes, pubmed-meshheading:9488045-Carcinogens, pubmed-meshheading:9488045-Carrier Proteins, pubmed-meshheading:9488045-Cell Cycle Proteins, pubmed-meshheading:9488045-CpG Islands, pubmed-meshheading:9488045-Cyclin-Dependent Kinase Inhibitor p15, pubmed-meshheading:9488045-Cyclin-Dependent Kinase Inhibitor p16, pubmed-meshheading:9488045-DNA, Neoplasm, pubmed-meshheading:9488045-DNA Methylation, pubmed-meshheading:9488045-Homozygote, pubmed-meshheading:9488045-Lymphoma, pubmed-meshheading:9488045-Mice, pubmed-meshheading:9488045-Mice, Inbred C57BL, pubmed-meshheading:9488045-Neoplasms, Experimental, pubmed-meshheading:9488045-Point Mutation, pubmed-meshheading:9488045-Polymorphism, Single-Stranded Conformational, pubmed-meshheading:9488045-Promoter Regions, Genetic, pubmed-meshheading:9488045-Sequence Analysis, DNA, pubmed-meshheading:9488045-Tumor Suppressor Proteins, pubmed-meshheading:9488045-Zalcitabine
pubmed:year
1998
pubmed:articleTitle
Inactivations of p16INK4a-alpha, p16INK4a-beta and p15INK4b genes in 2',3'-dideoxycytidine- and 1,3-butadiene-induced murine lymphomas.
pubmed:affiliation
Department of Biomedicine and Surgery, Faculty of Health Sciences, Linköping University, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't