Linked Life Data

16243295

Source:http://linkedlifedata.com/resource/pubmed/id/16243295

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2005-11-15
pubmed:abstractText
To determine the mechanism by which differentiation-inducing factor-1 (DIF-1), a morphogen of Dictyostelium discoideum, inhibits tumor cell proliferation, we examined the effect of DIF-1 on the gene expression of cyclin D1. DIF-1 strongly reduced the expression of cyclin D1 mRNA and correspondingly decreased the amount of beta-catenin in HeLa cells and squamous cell carcinoma cells. DIF-1 activated glycogen synthase kinase-3beta (GSK-3beta) and inhibition of GSK-3beta attenuated the DIF-1-induced beta-catenin degradation, indicating the involvement of GSK-3beta in this effect. Moreover, DIF-1 reduced the activities of T-cell factor (TCF)/lymphoid enhancer factor (LEF) reporter plasmid and a reporter gene driven by the human cyclin D1 promoter. Eliminating the TCF/LEF consensus site from the cyclin D1 promoter diminished the effect of DIF-1. These results suggest that DIF-1 inhibits Wnt/beta-catenin signaling, resulting in the suppression of cyclin D1 promoter activity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
16
pubmed:volume
338
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
903-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Differentiation-inducing factor-1 suppresses gene expression of cyclin D1 in tumor cells.
pubmed:affiliation
Department of Clinical Pharmacology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't