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A broad-spectrum human lung fibroblast-derived mitogen is a variant of hepatocyte growth factor - PubMed

  • ️Tue Jan 01 1991

A broad-spectrum human lung fibroblast-derived mitogen is a variant of hepatocyte growth factor

J S Rubin et al. Proc Natl Acad Sci U S A. 1991.

Abstract

A heparin-binding mitogen was isolated from conditioned medium of human embryonic lung fibroblasts. It exhibited broad target-cell specificity whose pattern was distinct from that of any known growth factor. It rapidly stimulated tyrosine phosphorylation of a 145-kDa protein in responsive cells, suggesting that its signaling pathways involved activation of a tyrosine kinase. Purification identified a major polypeptide with an apparent molecular mass of 87 kDa under reducing conditions. Partial amino acid sequence analysis and cDNA cloning revealed that it was a variant of hepatocyte growth factor, a mitogen thought to be specific for hepatic cells and structurally related to plasminogen. Recombinant expression of the cDNA in COS-1 cells established that it encoded the purified growth factor. Its site of synthesis and spectrum of targets imply that this growth factor may play an important role as a paracrine mediator of the proliferation of melanocytes and endothelial cells, as well as cells of epithelial origin.

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References

    1. Nature. 1989 Nov 23;342(6248):440-3 - PubMed
    1. Cancer Res. 1986 Mar;46(3):1015-29 - PubMed
    1. Biochem Biophys Res Commun. 1989 Dec 29;165(3):1229-34 - PubMed
    1. Proc Natl Acad Sci U S A. 1989 Feb;86(3):802-6 - PubMed
    1. FEBS Lett. 1987 Nov 30;224(2):311-6 - PubMed

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