| A smac mimetic reduces TNF related apoptosis inducing ligand (TRAIL)-induced invasion and metastasis of cholangiocarcinoma cells. | |
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MedLine Citation:
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PMID: 20683954 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Cholangiocarcinoma (CCA) cells paradoxically express tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), a death ligand that, failing to kill CCA cells, instead promotes their tumorigenicity and especially the metastatic behaviors of cell migration and invasion. Second mitochondria-derived activator of caspase (smac) mimetics are promising cancer therapeutic agents that enhance proapoptotic death receptor signaling by causing cellular degradation of inhibitor of apoptosis (IAP) proteins. Our aim was to examine the in vitro and in vivo effects of the smac mimetic JP1584 in CCA. Despite JP1584-mediated loss of cellular inhibitor of apoptosis-1 (cIAP-1) and cIAP-2, TRAIL failed to induce apoptosis in KMCH-1, TFK-1, and BDEneu CCA cells; a finding consistent with a downstream block in death signaling. Because cIAP-1 and cIAP-2 also promote nuclear factor kappa B (NF-kappaB) activation by the canonical pathway, the effect of JP1584 on this signaling pathway was examined. Treatment with JP1584 inhibited TRAIL-induced NF-kappaB activation as well as TRAIL-mediated up-regulation of the NF-kappaB target gene, matrix metalloproteinase 7 (MMP7). JP1584 also reduced TRAIL-mediated CCA cell migration and invasion in vitro. Finally, in a syngeneic rat orthotopic CCA model, JP1584 administration reduced MMP7 messenger RNA levels and extrahepatic metastases.CONCLUSION:: Although the smac mimetic JP1584 does not sensitize cells to apoptosis, it reduces TRAIL-induced CCA cell metastatic behavior. These data support the emerging concept that IAPs are prometastatic and represent targets for antimetastatic therapies. |
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Authors:
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Christian D Fingas; Boris R A Blechacz; Rory L Smoot; Maria E Guicciardi; Justin Mott; Steve F Bronk; Nathan W Werneburg; Alphonse E Sirica; Gregory J Gores |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Hepatology (Baltimore, Md.) Volume: 52 ISSN: 1527-3350 ISO Abbreviation: Hepatology Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-08-04 Completed Date: 2010-09-07 Revised Date: 2011-02-28 |
Medline Journal Info:
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Nlm Unique ID: 8302946 Medline TA: Hepatology Country: United States |
Other Details:
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Languages: eng Pagination: 550-61 Citation Subset: IM |
Affiliation:
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Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Bile Duct Neoplasms / drug therapy*, pathology, secondary* Bile Ducts, Intrahepatic* Cholangiocarcinoma / drug therapy*, pathology* Humans Intracellular Signaling Peptides and Proteins Male Mitochondrial Proteins Neoplasm Invasiveness Rats Rats, Inbred F344 TNF-Related Apoptosis-Inducing Ligand / drug effects*, physiology* Tumor Cells, Cultured |
| Grant Support | |
ID/Acronym/Agency:
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DK59427/DK/NIDDK NIH HHS; DK84567/DK/NIDDK NIH HHS; P30 DK084567-016281/DK/NIDDK NIH HHS; R01 CA 39225/CA/NCI NIH HHS; R01 CA 83650/CA/NCI NIH HHS; R01 CA039225-26/CA/NCI NIH HHS; R01 CA083650-10/CA/NCI NIH HHS; R01 DK059427-11/DK/NIDDK NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/DIABLO protein, human; 0/Intracellular Signaling Peptides and Proteins; 0/Mitochondrial Proteins; 0/TNF-Related Apoptosis-Inducing Ligand |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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