Linked Life Data

10671545

Source:http://linkedlifedata.com/resource/pubmed/id/10671545

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2000-3-21
pubmed:abstractText
Previously we showed that the activator protein-1 site and the runt domain binding site in the collagenase-3 promoter act cooperatively in response to parathyroid hormone (PTH) in the rat osteoblastic osteosarcoma cell line, UMR 106-01. Our results of the expression pattern of core binding factor alpha1 (Cbfa1), which binds to the runt domain site, indicated that there is no change in the levels of Cbfa1 protein or RNA under either control conditions or after PTH treatment. The importance of posttranslational modification of Cbfa1 in the signaling pathway for PTH-induced collagenase-3 promoter activity was analyzed. PTH stimulation of collagenase-3 promoter activity was completely abrogated by protein kinase A (PKA) inhibition. To determine the role of PKA activity with respect to Cbfa1 activation (in addition to its known activity of phosphorylating cAMP-response element-binding protein to enhance c-fos promoter activity), we utilized the heterologous Gal4 transcription system. PTH stimulated the transactivation of activation domain-3 in Cbfa1 through the PKA site. In vitro phosphorylation studies indicated that the PKA site in the wild type activation domain-3 is a substrate for phosphorylation by PKA. Thus, we demonstrate that PTH induces a PKA-dependent transactivation of Cbfa1, and this transactivation is required for collagenase-3 promoter activity in UMR cells.
pubmed:grant
pubmed:keyword
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
18
pubmed:volume
275
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5037-42
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:10671545-Animals, pubmed-meshheading:10671545-Collagenases, pubmed-meshheading:10671545-Core Binding Factor Alpha 1 Subunit, pubmed-meshheading:10671545-Core Binding Factors, pubmed-meshheading:10671545-Cyclic AMP-Dependent Protein Kinases, pubmed-meshheading:10671545-Enzyme Inhibitors, pubmed-meshheading:10671545-Gene Expression Regulation, Enzymologic, pubmed-meshheading:10671545-Matrix Metalloproteinase 13, pubmed-meshheading:10671545-Neoplasm Proteins, pubmed-meshheading:10671545-Parathyroid Hormone, pubmed-meshheading:10671545-Phosphorylation, pubmed-meshheading:10671545-Promoter Regions, Genetic, pubmed-meshheading:10671545-Rats, pubmed-meshheading:10671545-Signal Transduction, pubmed-meshheading:10671545-Transcription Factors, pubmed-meshheading:10671545-Transcriptional Activation, pubmed-meshheading:10671545-Tumor Cells, Cultured
pubmed:year
2000
pubmed:articleTitle
Parathyroid hormone regulation of the rat collagenase-3 promoter by protein kinase A-dependent transactivation of core binding factor alpha1.
pubmed:affiliation
Department of Pharmacological and Physiological Science, St. Louis University School of Medicine, St. Louis, Missouri 63104, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't