PMID- 12821940 OWN - NLM STAT- MEDLINE DCOM- 20030718 LR - 20120604 IS - 0950-9232 (Print) IS - 0950-9232 (Linking) VI - 22 IP - 26 DP - 2003 Jun 26 TI - Hepatocyte growth factor induces apoptosis through the extrinsic pathway in hepatoma cells: favouring role of hypoxia-inducible factor-1 deficiency. PG - 4062-73 AB - Two hepatocarcinoma cell lines, the Hepa-1 wild-type (c1c7) and the beta-subunit mutated (c4) lacking hypoxia-inducible factor-1 (HIF-1) activity, were differentially susceptible to apoptosis by hepatocyte growth factor (HGF). The c4 cells were 40% apoptotic 48 h after HGF treatment. On the contrary, the wild-type c1c7 cells showed modest signs of apoptosis only at 72 h. The revertant vT[2] cells, consisting of c4 cells stably transfected with HIF-1beta expression vector, behaved as the parental cells. To understand the mechanisms of this different sensitivity, we examined a panel of genes involved in apoptosis: ornithine decarboxylase, c-Myc and p53 protein levels progressively decreased while JNK1, caspase 8 and 3 activities persistently increased in c4 cells undergoing apoptosis. Distinct time-related events in c1c7 cells were the transient activations of JNK1 and caspase 8 followed by the accumulation of ODC and c-Myc proteins. The proapoptotic effect of HGF in c4 hepatocarcinoma cells seems to be related to HIF-1 deficiency with loss of cytoprotective and signalling functions. This may contribute to the triggering of the extrinsic pathway consisting in caspase 8 activation, which in turn causes BID cleavage and cytochrome c release. The effector caspase 3 is also activated. FAU - Matteucci, Emanuela AU - Matteucci E AD - Institute of General Pathology, School of Medicine, University of Milano, via L. Mangiagalli, 31-20133 Milano, Italy. FAU - Modora, Silvia AU - Modora S FAU - Simone, Matteo AU - Simone M FAU - Desiderio, Maria Alfonsina AU - Desiderio MA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Oncogene JT - Oncogene JID - 8711562 RN - 0 (Cadherins) RN - 0 (Cytochrome c Group) RN - 0 (DNA-Binding Proteins) RN - 0 (HIF1A protein, human) RN - 0 (Hypoxia-Inducible Factor 1) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (Nuclear Proteins) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Receptors, Growth Factor) RN - 0 (Trans-Activators) RN - 0 (Transcription Factors) RN - 67256-21-7 (Hepatocyte Growth Factor) RN - EC 2.7.10.1 (MET protein, human) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-met) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 8) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 3.4.22.- (CASP3 protein, human) RN - EC 3.4.22.- (CASP8 protein, human) RN - EC 3.4.22.- (CASP9 protein, human) RN - EC 3.4.22.- (Caspase 3) RN - EC 3.4.22.- (Caspase 8) RN - EC 3.4.22.- (Caspase 9) RN - EC 3.4.22.- (Caspases) SB - IM MH - *Apoptosis MH - Blotting, Northern MH - Blotting, Western MH - Cadherins/metabolism MH - Carcinoma, Hepatocellular/*metabolism MH - Caspase 3 MH - Caspase 8 MH - Caspase 9 MH - Caspases/metabolism MH - Cell Death MH - Cytochrome c Group/metabolism MH - DNA-Binding Proteins/*genetics/*physiology MH - Densitometry MH - Enzyme Activation MH - Genetic Vectors MH - Hepatocyte Growth Factor/*metabolism MH - Humans MH - Hypoxia-Inducible Factor 1 MH - Hypoxia-Inducible Factor 1, alpha Subunit MH - Mitochondria/metabolism MH - Mitogen-Activated Protein Kinase 8 MH - Mitogen-Activated Protein Kinases/metabolism MH - Mutation MH - Nuclear Proteins/*genetics/*physiology MH - *Proto-Oncogene Proteins MH - Proto-Oncogene Proteins c-met MH - *Receptors, Growth Factor MH - Scattering, Radiation MH - Time Factors MH - Trans-Activators/metabolism MH - *Transcription Factors MH - Tumor Cells, Cultured EDAT- 2003/06/25 05:00 MHDA- 2003/07/19 05:00 CRDT- 2003/06/25 05:00 PHST- 2003/06/25 05:00 [pubmed] PHST- 2003/07/19 05:00 [medline] PHST- 2003/06/25 05:00 [entrez] AID - 1206519 [pii] AID - 10.1038/sj.onc.1206519 [doi] PST - ppublish SO - Oncogene. 2003 Jun 26;22(26):4062-73. doi: 10.1038/sj.onc.1206519.