Linked Life Data

8563027

Source:http://linkedlifedata.com/resource/pubmed/id/8563027

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1996-3-5
pubmed:abstractText
Development of murine proximal colon follows a complex pattern of morphological and functional differentiation. Molecular mechanisms and factors responsible for colon-specific gene expression remain to be established. In an attempt to identify some of these factors, we examined the expression of the alpha, beta, and delta isoforms of the CCAAT/enhancer binding protein (C/EBP) transcription factor gene family during murine colon development. Whereas C/EBP alpha mRNA levels are reduced during the third post-natal week, C/EBP alpha 42 and 30 kD proteins levels decrease between post-natal days 8 and 21. C/EBP beta mRNA levels increase between post-natal days 4 and 8 and remain constant subsequently, in contrast to a decrease in C/EBP beta protein levels between post-natal days 11 and 15. C/EBP delta mRNA levels increase gradually while C/EBP delta protein levels show variations during post-natal development. Changes in C/EBP DNA binding activity coincides with modifications in C/EBP isoforms expression. By indirect immunofluorescence, we show restriction of C/EBP alpha expression to differentiated surface epithelial cells during crypt formation. C/EBP alpha is predominantly nuclear with some cytoplasmic staining at all developmental stages. C/EBP beta and delta are both predominantly nuclear in crypt and differentiated surface epithelial cells, as well as in various cells of the lamina propria and muscular layers. Thus, specific C/EBP isoforms are differentially regulated during murine colon post-natal development. Differential C/EBP isoforms pattern of expression suggests a role for these transcription factors in colon-specific gene expression during development.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1058-8388
pubmed:author
pubmed:issnType
Print
pubmed:volume
204
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
66-76
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
CCAAT/enhancer binding protein isoforms expression in the colon of neonatal mice.
pubmed:affiliation
Département d'Anatomie et Biologie Cellulaire, Faculté de Médecine, Université de Sherbrooke, Québec, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't