title: Transcriptional regulation of basic fibroblast growth factor gene expression in capillary endothelial cells.
abstract: The growth of capillary endothelial cells (BCE) is an important regulatory step in the formation of capillary blood vessels. In vivo, the proliferation of these cells is stringently controlled. In vitro they can be stimulated by polypeptide growth factors, such as acidic fibroblast growth factor (aFGF) and basic fibroblast growth factor (bFGF). Since bFGF is synthesized and stored by vascular endothelial cells, this mitogen may play an important role in an autocrine growth regulation during angiogenesis. Here, evidence is presented for induction of the mRNA of bFGF by bFGF itself. A similar increase of bFGF mRNA was observed in response to thrombin and after treatment with phorbol ester. These results suggest that an autocrine loop may exist that may serve to modulate the mitogenic response in BCE under various physiological conditions, (e.g., wound healing and new capillary formation).
authors.affiliation: Department of Surgery, Children's Hospital, Boston, Massachusetts.
authors.forename: H A
authors.initials: HA
authors.lastname: Weich
authors.forename: N
authors.initials: N
authors.lastname: Iberg
authors.forename: M
authors.initials: M
authors.lastname: Klagsbrun
authors.forename: J
authors.initials: J
authors.lastname: Folkman
mesh_terms: D000818:Animals; D015152:Blotting, Northern; D002417:Cattle; D004730:Endothelium, Vascular / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D016222:Fibroblast Growth Factor 2 / Q000235:genetics*; D006801:Humans; D051379:Mice; D008807:Mice, Inbred BALB C; D012333:RNA, Messenger / Q000235:genetics; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D013917:Thrombin / Q000494:pharmacology; D014158:Transcription, Genetic
chemical_list: D012333:RNA, Messenger; D016222:Fibroblast Growth Factor 2; D013917:Thrombin; D013755:Tetradecanoylphorbol Acetate