PMID- 10710506 OWN - NLM STAT- MEDLINE DCOM- 20000524 LR - 20181130 IS - 0193-1849 (Print) IS - 0193-1849 (Linking) VI - 278 IP - 3 DP - 2000 Mar TI - Cortisol inhibits hepatocyte growth factor/scatter factor expression and induces c-met transcripts in osteoblasts. PG - E509-15 AB - Hepatocyte growth factor/scatter factor (HGF/SF) is expressed by osteoblasts and has important effects on repair and bone remodeling. Because glucocorticoids regulate these two functions, we tested the effects of cortisol on the expression of HGF/SF and c-met, the protooncogene encoding the HGF/SF receptor, in cultures of osteoblast-enriched cells from 22-day fetal rat calvariae (Ob cells). Cortisol decreased HGF/SF mRNA levels and diminished the induction of HGF/SF transcripts by fibroblast growth factor-2 (FGF-2) and platelet-derived growth factor BB (PDGF BB). Cortisol also decreased FGF-2 and PDGF BB-induced HGF/SF mRNA and polypeptide levels in MC3T3 cells. In contrast, cortisol enhanced the expression of c-met transcripts in Ob cells. Cortisol did not modify the half-life of HGF/SF or of c-met mRNA in transcriptionally arrested cells, and it increased the rate of transcription of c-met. In conclusion, cortisol decreases HGF/SF transcripts in Ob cells and enhances c-met expression transcriptionally. The effects of cortisol on HGF/SF could be relevant to its inhibitory actions on bone formation and repair. FAU - Blanquaert, F AU - Blanquaert F AD - Departments of Research and Medicine, Saint Francis Hospital and Medical Center, Hartford, CT 06105, USA. FAU - Pereira, R C AU - Pereira RC FAU - Canalis, E AU - Canalis E LA - eng GR - DK-45227/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Physiol Endocrinol Metab JT - American journal of physiology. Endocrinology and metabolism JID - 100901226 RN - 0 (Platelet-Derived Growth Factor) RN - 0 (Proto-Oncogene Proteins c-sis) RN - 0 (RNA, Messenger) RN - 103107-01-3 (Fibroblast Growth Factor 2) RN - 1B56C968OA (Becaplermin) RN - 67256-21-7 (Hepatocyte Growth Factor) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-met) RN - WI4X0X7BPJ (Hydrocortisone) SB - IM MH - Animals MH - Becaplermin MH - Fibroblast Growth Factor 2/pharmacology MH - Hepatocyte Growth Factor/*antagonists & inhibitors/genetics MH - Hydrocortisone/*pharmacology MH - Osteoblasts/*drug effects/metabolism/*physiology MH - Platelet-Derived Growth Factor/pharmacology MH - Proto-Oncogene Proteins c-met/*genetics MH - Proto-Oncogene Proteins c-sis MH - RNA, Messenger/antagonists & inhibitors/metabolism MH - Rats MH - Skull/cytology/embryology MH - Transcription, Genetic/*drug effects EDAT- 2000/03/11 09:00 MHDA- 2000/06/08 09:00 CRDT- 2000/03/11 09:00 PHST- 2000/03/11 09:00 [pubmed] PHST- 2000/06/08 09:00 [medline] PHST- 2000/03/11 09:00 [entrez] AID - 10.1152/ajpendo.2000.278.3.E509 [doi] PST - ppublish SO - Am J Physiol Endocrinol Metab. 2000 Mar;278(3):E509-15. doi: 10.1152/ajpendo.2000.278.3.E509.