PMID- 8980383 OWN - NLM STAT- MEDLINE DCOM- 19970127 LR - 20220408 IS - 0007-0920 (Print) IS - 1532-1827 (Electronic) IS - 0007-0920 (Linking) VI - 74 IP - 12 DP - 1996 Dec TI - Overexpression and activation of hepatocyte growth factor/scatter factor in human non-small-cell lung carcinomas. PG - 1862-8 AB - Hepatocyte growth factor/scatter factor (HGF/SF) stimulates the invasive growth of epithelial cells via the c-MET oncogene-encoded receptor. In normal lung, both the receptor and the ligand are detected, and the latter is known to be a mitogenic and a motogenic factor for both cultured bronchial epithelial cells and non-small-cell carcinoma lines. Here, ligand and receptor expression was examined in 42 samples of primary human non-small-cell lung carcinoma of different histotype. Each carcinoma sample was compared with adjacent normal lung tissue. The Met/HGF receptor was found to be 2 to 10-fold increased in 25% of carcinoma samples (P = 0.0113). The ligand, HGF/SF, was found to be 10 to 100-fold overexpressed in carcinoma samples (P < 0.0001). Notably, while HGF/SF was occasionally detectable and found exclusively as a single-chain inactive precursor in normal tissues, it was constantly in the biologically-active heterodimeric form in carcinomas. Immunohistochemical staining showed homogeneous expression of both the receptor and the ligand in carcinoma samples, whereas staining was barely detectable in their normal counterparts. These data show that HGF/SF is overexpressed and consistently activated in non-small-cell lung carcinomas and may contribute to the invasive growth of lung cancer. FAU - Olivero, M AU - Olivero M AD - Institute for Cancer Research and Treatment IRCC, Torino, Italy. FAU - Rizzo, M AU - Rizzo M FAU - Madeddu, R AU - Madeddu R FAU - Casadio, C AU - Casadio C FAU - Pennacchietti, S AU - Pennacchietti S FAU - Nicotra, M R AU - Nicotra MR FAU - Prat, M AU - Prat M FAU - Maggi, G AU - Maggi G FAU - Arena, N AU - Arena N FAU - Natali, P G AU - Natali PG FAU - Comoglio, P M AU - Comoglio PM FAU - Di Renzo, M F AU - Di Renzo MF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Br J Cancer JT - British journal of cancer JID - 0370635 RN - 0 (Antibodies, Monoclonal) 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 - Adenocarcinoma/metabolism/pathology MH - Adult MH - Aged MH - Antibodies, Monoclonal/analysis MH - Blotting, Western/methods MH - Carcinoma, Non-Small-Cell Lung/*metabolism/pathology MH - Carcinoma, Squamous Cell/metabolism/pathology MH - Female MH - Hepatocyte Growth Factor/*biosynthesis MH - Humans MH - Lung/metabolism MH - Lung Neoplasms/*metabolism/pathology MH - Male MH - Middle Aged MH - Proto-Oncogene Proteins c-met MH - Receptor Protein-Tyrosine Kinases/*biosynthesis PMC - PMC2074802 EDAT- 1996/12/01 00:00 MHDA- 1996/12/01 00:01 CRDT- 1996/12/01 00:00 PHST- 1996/12/01 00:00 [pubmed] PHST- 1996/12/01 00:01 [medline] PHST- 1996/12/01 00:00 [entrez] AID - 10.1038/bjc.1996.646 [doi] PST - ppublish SO - Br J Cancer. 1996 Dec;74(12):1862-8. doi: 10.1038/bjc.1996.646.