PMID- 8770939 OWN - NLM STAT- MEDLINE DCOM- 19961010 LR - 20211203 IS - 0013-7227 (Print) IS - 0013-7227 (Linking) VI - 137 IP - 7 DP - 1996 Jul TI - A role for hepatocyte growth factor/scatter factor in fetal mesenchyme-induced pancreatic beta-cell growth. PG - 3131-9 AB - We have investigated the role of hepatocyte growth factor/scatter factor (HGF/SF) in the growth and/or differentiation of pancreatic islet beta-cells. We found that in the human fetal pancreas immunoreactive HGF/SF receptor (c-met proto-oncogene product) is preferentially associated with the developing beta-cells. In the adult pancreas, c-met messenger RNA is highly enriched in the islets and the immunoreactive protein is also restricted to the islet beta-cells. HGF/SF messenger RNA content of fetal pancreas-derived fibroblasts is more than 10-fold higher than that of adult fibroblasts. Culture of human fetal pancreatic epithelial cells in conditioned medium from the fetal pancreatic fibroblasts caused a 2.4-fold stimulation of the formation of islet-like cell clusters that was due to both mitogenic and morphogenic effects. Beta-cell proliferation in the cell clusters was stimulated 3.5-fold by the conditioned medium, and this was associated with a marked decrease in insulin content. All of the effects of the conditioned medium were blocked by anti-HGF/SF antibody. Specificity was confirmed by overriding the blocking effect of the antibody with excess recombinant HGF/SF. Conditioned medium from adult pancreatic fibroblasts stimulated islet-like cell cluster formation only slightly, and did not affect beta-cell replication. These results suggest that HGF/SF secreted by fetal fibroblasts is mitogenic to beta-cells. Taken together, our findings indicate an important role for HGF/SF in fetal mesenchyme-induced pancreatic beta-cell growth. FAU - Otonkoski, T AU - Otonkoski T AD - The Whittier Institute, Department of Pediatrics, University of California San Diego, La Jolla, 92037. FAU - Cirulli, V AU - Cirulli V FAU - Beattie, M AU - Beattie M FAU - Mally, M I AU - Mally MI FAU - Soto, G AU - Soto G FAU - Rubin, J S AU - Rubin JS FAU - Hayek, A AU - Hayek A LA - eng GR - 2SO6 GM-47165-05/GM/NIGMS NIH HHS/United States GR - R01-DK 39087/DK/NIDDK NIH HHS/United States GR - RR-04050/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Endocrinology JT - Endocrinology JID - 0375040 RN - 0 (Culture Media, Conditioned) RN - 0 (Insulin) RN - 0 (MAS1 protein, human) RN - 0 (Proto-Oncogene Mas) RN - 0 (RNA, Messenger) RN - 0 (Recombinant Proteins) RN - 67256-21-7 (Hepatocyte Growth Factor) RN - 9007-92-5 (Glucagon) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-met) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) SB - IM MH - Adult MH - Analysis of Variance MH - Cell Division MH - Cells, Cultured MH - Culture Media, Conditioned MH - Fetus MH - Fibroblasts/cytology/physiology MH - Fluorescent Antibody Technique MH - Gestational Age MH - Glucagon/analysis/biosynthesis MH - Hepatocyte Growth Factor/biosynthesis/*pharmacology/*physiology MH - Humans MH - Insulin/analysis/biosynthesis MH - Islets of Langerhans/cytology/embryology/*physiology MH - Mesoderm/*physiology MH - Microscopy, Confocal MH - Proto-Oncogene Mas MH - Proto-Oncogene Proteins c-met MH - RNA, Messenger/biosynthesis MH - Receptor Protein-Tyrosine Kinases/*biosynthesis MH - Recombinant Proteins/pharmacology MH - Transcription, Genetic EDAT- 1996/07/01 00:00 MHDA- 1996/07/01 00:01 CRDT- 1996/07/01 00:00 PHST- 1996/07/01 00:00 [pubmed] PHST- 1996/07/01 00:01 [medline] PHST- 1996/07/01 00:00 [entrez] AID - 10.1210/endo.137.7.8770939 [doi] PST - ppublish SO - Endocrinology. 1996 Jul;137(7):3131-9. doi: 10.1210/endo.137.7.8770939.