PMID- 8631159 OWN - NLM STAT- MEDLINE DCOM- 19960702 LR - 20220318 IS - 0192-253X (Print) IS - 0192-253X (Linking) VI - 18 IP - 3 DP - 1996 TI - Co-expression of the HGF/SF and c-met genes during early mouse embryogenesis precedes reciprocal expression in adjacent tissues during organogenesis. PG - 254-66 AB - Early experiments with cells in culture and recent targeting experiments have confirmed that the mesenchyme-derived growth factor hepatocyte growth factor/scatter factor (HGF/SF) is a paracrine agent that regulates the development of several epithelial and myogenic precursor cells during organogenesis. Here, we report the expression pattern of HGF/SF and its receptor, the product of the proto-oncogene c-met, during gastrulation and early organogenesis in mouse embryo. During gastrulation, the expression of HGF/SF and c-met overlaps. Initially the two genes are expressed in the endoderm and in the mesoderm along the rostro-intermediate part of the primitive streak and, later, in the node and in the notochord. Neither HGF/SF nor c-met is expressed in the ectodermal layer throughout gastrulation. During early organogenesis, overlapping expression of HGF/SF and c-met is found in heart, condensing somites and neural crest cells. However, a second and distinct pattern of expression, characterized by the presence of the ligand in mesenchymal tissues and the receptor in the surrounding ectoderm, is seen in the bronchial arches and in the limb buds. At 13 days postcoitum (d.p.c.), only this second pattern of expression is observed in differentiated somites and several major organs (i.e., lungs, liver, and gut). The expression of the HGF/SF and c-met genes throughout embryogenesis suggests a shift from an autocrine to a paracrine signaling system. The shift takes place in early organogenesis and implies different roles of HGF/SF in development. During gastrulation, HGF/SF may affect the fate of migrating mesodermal cells and may play a role in axis determination, whereas during organogenesis, the expression patterns of HGF/SF and its receptor reflect the recently established roles in the growth of certain epithelia and the migration of specific myogenic precursor cells. FAU - Andermarcher, E AU - Andermarcher E AD - ICRF Cell Interactions Laboratory, Cambridge University Medical School, MRC Centre, UK. FAU - Surani, M A AU - Surani MA FAU - Gherardi, E AU - Gherardi E LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Dev Genet JT - Developmental genetics JID - 7909963 RN - 67256-21-7 (Hepatocyte Growth Factor) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-met) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) SB - IM MH - Animals MH - Branchial Region/embryology/metabolism MH - Cardiovascular System/embryology/metabolism MH - Embryonic and Fetal Development/genetics/*physiology MH - Female MH - Gastrula/metabolism MH - *Gene Expression MH - Hepatocyte Growth Factor/*genetics MH - Limb Buds/embryology/metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Inbred CBA MH - Proto-Oncogene Proteins c-met MH - Receptor Protein-Tyrosine Kinases/*genetics MH - Viscera/embryology/metabolism EDAT- 1996/01/01 00:00 MHDA- 2000/06/20 09:00 CRDT- 1996/01/01 00:00 PHST- 1996/01/01 00:00 [pubmed] PHST- 2000/06/20 09:00 [medline] PHST- 1996/01/01 00:00 [entrez] AID - 10.1002/(SICI)1520-6408(1996)18:3<254::AID-DVG6>3.0.CO;2-8 [pii] AID - 10.1002/(SICI)1520-6408(1996)18:3<254::AID-DVG6>3.0.CO;2-8 [doi] PST - ppublish SO - Dev Genet. 1996;18(3):254-66. doi: 10.1002/(SICI)1520-6408(1996)18:3<254::AID-DVG6>3.0.CO;2-8.