PMID- 8381273 OWN - NLM STAT- MEDLINE DCOM- 19930303 LR - 20190612 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 190 IP - 2 DP - 1993 Jan 29 TI - Urokinase-urokinase receptor interaction: non-mitogenic signal transduction in human epidermal cells. PG - 347-52 AB - We studied non-mitogenic signal transduction in a human cell line of epidermal origin which is induced to chemotaxis following stimulation with human urokinase-type plasminogen activator (u-PA) or with the amino-terminal fragment (ATF) of u-PA A chain, which specifically interacts with the cellular receptor. U-PA and ATF stimulated the formation of diacylglycerol (DAG) independently of inositol lipid and phosphatidylcholine turnover, but concomitantly with de novo synthesis from glucose, thus resembling the DAG neosynthesis activated by insulin. DAG was measured in normal epidermal cells and in cells transfected with the human u-PA receptor (u-PAR) gene and stimulated with u-PA or ATF. Transfected clones showed an increase of cell motility under an ATF gradient in vitro as well as an increase of DAG production. These findings identify a novel mechanism of second messenger formation that conveys chemotactic signals upon stimulation of the u-PAR. FAU - Del Rosso, M AU - Del Rosso M AD - Institute of General Pathology, Firenze, Italy. FAU - Anichini, E AU - Anichini E FAU - Pedersen, N AU - Pedersen N FAU - Blasi, F AU - Blasi F FAU - Fibbi, G AU - Fibbi G FAU - Pucci, M AU - Pucci M FAU - Ruggiero, M AU - Ruggiero M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Diglycerides) RN - 0 (PLAUR protein, human) RN - 0 (Peptide Fragments) RN - 0 (Phosphatidylcholines) RN - 0 (Receptors, Cell Surface) RN - 0 (Receptors, Urokinase Plasminogen Activator) RN - EC 3.4.21.73 (Urokinase-Type Plasminogen Activator) RN - IY9XDZ35W2 (Glucose) RN - PDC6A3C0OX (Glycerol) SB - IM MH - Cell Line MH - Chemotaxis MH - Diglycerides/biosynthesis MH - Epidermis/*physiology MH - Glucose/metabolism MH - Glycerol/metabolism MH - Humans MH - Peptide Fragments/pharmacology MH - Phosphatidylcholines/metabolism MH - Receptors, Cell Surface/genetics/*physiology MH - Receptors, Urokinase Plasminogen Activator MH - *Signal Transduction MH - Transfection MH - Urokinase-Type Plasminogen Activator/*pharmacology EDAT- 1993/01/29 00:00 MHDA- 1993/01/29 00:01 CRDT- 1993/01/29 00:00 PHST- 1993/01/29 00:00 [pubmed] PHST- 1993/01/29 00:01 [medline] PHST- 1993/01/29 00:00 [entrez] AID - S0006291X83710545 [pii] AID - 10.1006/bbrc.1993.1054 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 1993 Jan 29;190(2):347-52. doi: 10.1006/bbrc.1993.1054.