PMID- 16951184 OWN - NLM STAT- MEDLINE DCOM- 20071126 LR - 20120604 IS - 1538-7445 (Electronic) IS - 0008-5472 (Linking) VI - 66 IP - 17 DP - 2006 Sep 1 TI - Mimp, a mitochondrial carrier homologue, inhibits Met-HGF/SF-induced scattering and tumorigenicity by altering Met-HGF/SF signaling pathways. PG - 8687-97 AB - We have recently shown that Mimp, a mitochondrial carrier protein homologue, is induced by Met-hepatocyte growth factor/scatter factor (HGF/SF) signaling and decreases the mitochondrial membrane potential in DA3 mammary adenocarcinoma cells. We show here that induction of Mimp leads to growth arrest in response to HGF/SF by arresting cells at the S phase of the cell cycle. Induction of Mimp or its transient expression does not lead to apoptosis. Mimp also attenuates HGF/SF-induced cellular scattering in vitro and tumor growth in vivo. The exogenous induction of Mimp at levels similar to its endogenous induction by HGF/SF increases the level of the Met protein and its phosphorylation by HGF/SF but reduces the levels of Shc and prevents the HGF/SF-induced tyrosine phosphorylation of Grb2 and Shc. In contrast, the level of phosphatidylinositol 3-kinase (PI3K) increases following Mimp induction and the level of phosphorylated PI3K in response to HGF/SF is unaffected by the exogenous induction of Mimp. Moreover, exogenous Mimp prevents the HGF/SF-induced transcription of the serum response element-luciferase reporter gene. Our results show that Mimp expression reduces Met-HGF/SF-induced proliferation and scattering by attenuating and altering the downstream signaling of Met. These data show a new link between a tyrosine kinase growth factor receptor and a mitochondrial carrier homologue that regulates cellular growth, motility, and tumorigenicity. FAU - Leibowitz-Amit, Raya AU - Leibowitz-Amit R AD - Department of Human Microbiology, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel. FAU - Tsarfaty, Galia AU - Tsarfaty G FAU - Abargil, Yamit AU - Abargil Y FAU - Yerushalmi, Gil M AU - Yerushalmi GM FAU - Horev, Judith AU - Horev J FAU - Tsarfaty, Ilan AU - Tsarfaty I LA - eng GR - P50CA93990/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (HGF protein, human) RN - 0 (Membrane Transport Proteins) RN - 0 (Mitochondrial Membrane Transport Proteins) RN - 0 (Mitochondrial Proteins) RN - 0 (Mtch2 protein, mouse) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Receptors, Growth Factor) 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) SB - IM MH - Breast Neoplasms MH - Cell Line MH - Cell Line, Tumor MH - Female MH - Hepatocyte Growth Factor/*physiology MH - Humans MH - Kidney MH - Membrane Transport Proteins/*physiology MH - Mitochondrial Membrane Transport Proteins MH - Mitochondrial Proteins/*physiology MH - Proto-Oncogene Proteins/*physiology MH - Proto-Oncogene Proteins c-met MH - Receptors, Growth Factor/*physiology MH - Signal Transduction MH - Transfection EDAT- 2006/09/05 09:00 MHDA- 2007/12/06 09:00 CRDT- 2006/09/05 09:00 PHST- 2006/09/05 09:00 [pubmed] PHST- 2007/12/06 09:00 [medline] PHST- 2006/09/05 09:00 [entrez] AID - 66/17/8687 [pii] AID - 10.1158/0008-5472.CAN-05-2294 [doi] PST - ppublish SO - Cancer Res. 2006 Sep 1;66(17):8687-97. doi: 10.1158/0008-5472.CAN-05-2294.