Linked Life Data

7946406

Source:http://linkedlifedata.com/resource/pubmed/id/7946406

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1994-12-8
pubmed:abstractText
To develop a model for studies of liver growth control, we characterized cell cycle synchronization of liver-derived cells with sodium butyrate. Exposure of cultured HTC (rat hepatoma) cells to 5 mM butyrate arrested cell growth in a reversible manner. Flow cytometric analysis revealed that butyrate-treated HTC cells were restricted in G0/G1, as well as S/G2M phases. After release from butyrate arrest, HTC cells underwent synchronous cycles of DNA synthesis and transited through S phase. Inhibition of cell growth by butyrate was associated with a complex pattern of cell cycle regulated gene expression, including a decoupling of c-fos and c-jun gene expression. Transcription of c-fos, as well as c-jun increased with butyrate arrest, whereas steady rate mRNA levels of c-jun only were increased, suggesting additional regulation of c-fos. In addition, butyrate-arrested cells exhibited a transcriptionally determined accumulation of H3 histone, C-Ha-ras and ornithine decarboxylase mRNAs, suggesting that cell cycle-related check points following the onset of S phase were modulated. An increase in c-myc mRNA levels in butyrate-arrested cells was post-transcriptionally regulated. After release from butyrate-arrest, the abundance of immediate early, as well as S phase regulated, gene expression changed coordinately with S phase cell transitions. Thus, exposure of HTC cells to butyrate modulates cell cycle regulated gene expression, inhibits cycling, and results in accumulation of cells in specific compartments. Synchronization of liver cells with butyrate should, therefore, provide a useful model for defining cell cycle-related events in response to various mitogenic stimuli.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0897-7194
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:geneSymbol
c-Ha-ras, c-erbA, c-fos, c-jun, c-ras, p53
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
171-80
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Butyrate synchronization of hepatocytes: modulation of cycling and cell cycle regulated gene expression.
pubmed:affiliation
Marion Bessin Liver Research Center, Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.