Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1993-8-5
pubmed:abstractText
Retinoic acid (RA) and estrogen modulation of insulin like-growth factor binding protein-4 (IGFBP-4) gene expression was investigated in a number of human breast carcinoma (HBC) cell lines. Our results indicate that RA and/or estrogen modulation of IGFBP-4 mRNA levels appear to correlate with the ER-status of HBC cell lines. RA and estrogen enhanced IGFBP-4 mRNA levels in ER-positive MCF-7, RRO-I and ZR-75 cell lines and the effect of both of these agents in combination was additive. Although both individually also enhanced IGFBP-4 mRNA levels in ER-positive T47D cells, their effect in combination was antagonistic in this cell line. Transfection of human ER into ER-negative MDA-MB-231 cells conferred RA and estrogen the ability to enhance IGFBP-4 mRNA but both agents failed to concomitantly modulate IGFBP-4 levels in the CM suggesting a dual regulation by these agents at transcription/post-transcription and translation/secretion levels.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
193
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1232-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Retinoic acid and estrogen modulation of insulin-like growth factor binding protein-4 gene expression and the estrogen receptor status of human breast carcinoma cells.
pubmed:affiliation
Department of Medicine, University of Maryland School of Medicine, Baltimore.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.