| Literature DB >> 2745561 |
Abstract
Transforming growth factor-beta (TGF-beta) stimulates DNA synthesis in human foreskin fibroblasts after a prolonged lag period as compared with other growth factors. The mechanism of induction of DNA synthesis appears to be dependent on the synthesis and secretion of PDGF-related proteins as antibodies which are specific for PDGF can block the TGF-beta-induced DNA synthesis. Other growth factors such as PDGF, EGF, or FGF do not induce the synthesis of these PDGF-related proteins. Additionally, TGF-beta treatment of human foreskin fibroblasts induces the expression of the PDGF A-chain gene but not the B-chain gene. This phenomenon appears to function in vivo, as subcutaneous injection of TGF-beta in rat skin induces the expression of the PDGF A-chain gene. These data suggest that TGF-beta may stimulate the growth of fibroblastic cells via an autocrine production of PDGF-related proteins.Entities:
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Year: 1989 PMID: 2745561 DOI: 10.1002/jcp.1041400209
Source DB: PubMed Journal: J Cell Physiol ISSN: 0021-9541 Impact factor: 6.384