Linked Life Data

7832811

Source:http://linkedlifedata.com/resource/pubmed/id/7832811

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1995-2-22
pubmed:abstractText
We investigated the effects of epidermal growth factor (EGF) on polyamine uptake in Caco-2 cell monolayers. Cells were grown until confluence (day 7) or until differentiation (day 14). Polyamine uptake into Caco-2 cells was stimulated by EGF in a dose-dependent manner. Both basal and EGF-stimulated uptake rates were higher in 7- than in 14-day-old Caco-2 cells. Stimulation with EGF resulted in a significant increase in Vmax and an increased affinity for putrescine and spermine. Polyamine uptake was not inhibited when protein synthesis was blocked by cycloheximide, implying that no additional protein synthesis occured for stimulatory effect of EGF on polyamine uptake. The tyrosine kinase inhibitor, genistein, completely inhibited EGF-stimulated polyamine uptake, indicating that tyrosine phosphorylation plays a role in EGF-stimulated polyamine uptake in Caco-2 cells. The effect of EGF on polyamine uptake into Caco-2 cells, therefore, could be due to translocation of intracellular proteins which were not previously incorporated into the membrane, or direct alteration of polyamine transporter.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
26
pubmed:volume
206
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
962-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
EGF stimulates polyamine uptake in Caco-2 cells.
pubmed:affiliation
2nd Department of Medicine, Johann Wolfgang Goethe University, Frankfurt/Main, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't