| Literature DB >> 3858871 |
G D Shipley, R F Tucker, H L Moses.
Abstract
Type beta transforming growth factor/growth inhibitor (TGF-beta/GI) is demonstrated to be a potent stimulator of DNA synthesis in AKR-2B mouse embryo cells with a prolonged (greater than 24 hr) prereplicative phase when compared with other growth factors (epidermal growth factor, platelet-derived growth factor, or fibroblast growth factor) that induce DNA synthesis 12-14 hr after stimulation. In addition, TGF-beta/GI inhibits the early peak of DNA synthesis produced by EGF and insulin before the later stimulatory effects of TGF-beta/GI become manifest. TGF-beta/GI induces a marked morphologic transformation in these cells prior to their entry into S phase. Like the other growth factors, TGF-beta/GI stimulates an early increase in the rate of protein synthesis in AKR-2B cells and its stimulatory effect on DNA synthesis is enhanced by insulin. The data show that this molecule is a growth factor for certain mesenchymal cells in monolayer culture but only after a prereplicative phase that is significantly longer than that of other growth factors.Entities:
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Year: 1985 PMID: 3858871 PMCID: PMC397952 DOI: 10.1073/pnas.82.12.4147
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205