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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
10
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pubmed:dateCreated |
1987-11-27
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pubmed:abstractText |
Specific high-affinity receptor(s) for insulin-like growth factor I have been identified in fetal mouse liver cells (FMLC) rich in late erythroid progenitors (CFU-E). Competition for [125I]IGF-I binding by IGFs and insulin demonstrated the presence of Type-I IGF receptors. Scatchard analysis of the binding data revealed a single class of receptors (Kd, 1.2 nM; R0, 600 sites per cell). Erythroid colony formation and DNA synthesis by these cells were enhanced by IGF-I alone or in combination with erythropoietin (Epo). Subfractionations of FMLC using Percoll density gradients showed that a significant part of [125I]IGF-I binding was observed in the CFU-E-enriched fraction and that the erythroid colony formation was mostly enhanced by IGF-I in the same fraction. IGF-I stimulated the phosphorylation of the beta-subunit of the Type-I receptors. These results indicate that IGF-I modulates the Epo-stimulated proliferation and differentiation of erythroid progenitors via its specific receptors.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0301-472X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
15
|
pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1068-73
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pubmed:dateRevised |
2009-11-19
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pubmed:meshHeading |
pubmed-meshheading:2959496-Animals,
pubmed-meshheading:2959496-Cell Division,
pubmed-meshheading:2959496-Fetus,
pubmed-meshheading:2959496-Insulin-Like Growth Factor I,
pubmed-meshheading:2959496-Liver,
pubmed-meshheading:2959496-Mice,
pubmed-meshheading:2959496-Mice, Inbred ICR,
pubmed-meshheading:2959496-Phosphorylation,
pubmed-meshheading:2959496-Receptor, Insulin,
pubmed-meshheading:2959496-Receptors, Somatomedin,
pubmed-meshheading:2959496-Somatomedins
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pubmed:year |
1987
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pubmed:articleTitle |
Binding properties and proliferative potency of insulin-like growth factor I in fetal mouse liver cells.
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pubmed:affiliation |
Research Institute, Daiichi Seiyaku Company, Limited, Tokyo, Japan.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|