Linked Life Data

487427

Source:http://linkedlifedata.com/resource/pubmed/id/487427

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1979-12-27
pubmed:abstractText
The mechanism by which prolactin, a peptide hormone, regulates casein gene expression has been studied in mammary gland organ culture. After prolactin addition, a 2-4 fold increase in the rate of casein mRNA transcription was observed within 1 hr and maintained for at least 24 hr. This increased rate of transcription is not sufficient to account for the mass accumulation of casein mRNA. The half-life of casein mRNA is also increased 17-25 fold in the presence of prolactin. This change in casein mRNA half-life, coupled with a 2-4 fold increase in the rate of transcription, can account for the normal accumulation of casein mRNA observed after prolactin addition. This hormone-induced change in casein mRNA half-life appeared to be selective, since prolactin was found to exert only a slight effect (1-4 fold) on the half-life of poly(A) RNA determined under identical pulse-chase conditions. The hormonal regulation of casein gene expression thus does not app-ar to be an "all or none" process occurring only at the transcriptional or post-transcriptional levels, but rather may involve a coordinated response at several levels to permit the efficient expression of specialized differentiated functions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0092-8674
pubmed:author
pubmed:issnType
Print
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1013-23
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Prolactin-mediated transcriptional and post-transcriptional control of casein gene expression.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.