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- W2045550424 abstract "No AccessJournal of UrologyInvestigative Urology1 Jul 2013Dietary Supplement Hymecromone and Sorafenib: A Novel Combination for the Control of Renal Cell Carcinoma Anaid Benitez, Travis J. Yates, N. Shamaldevi, Tim Bowen, and Vinata B. Lokeshwar Anaid BenitezAnaid Benitez Sylvester Comprehensive Cancer Center, University of Miami-Miller School of Medicine, Miami, Florida Equal study contribution. More articles by this author , Travis J. YatesTravis J. Yates Sylvester Comprehensive Cancer Center, University of Miami-Miller School of Medicine, Miami, Florida Equal study contribution. More articles by this author , N. ShamaldeviN. Shamaldevi Department of Urology, University of Miami-Miller School of Medicine, Miami, Florida More articles by this author , Tim BowenTim Bowen Section of Nephrology, Institute of Molecular and Experimental Medicine, Cardiff University School of Medicine, Cardiff, United Kingdom More articles by this author , and Vinata B. LokeshwarVinata B. Lokeshwar Sylvester Comprehensive Cancer Center, University of Miami-Miller School of Medicine, Miami, Florida Department of Urology, University of Miami-Miller School of Medicine, Miami, Florida Department of Cell Biology, University of Miami-Miller School of Medicine, Miami, Florida More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2012.12.011AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: Current treatments for metastatic renal cell carcinoma do not extend survival beyond a few months. Sorafenib is a targeted drug approved for metastatic renal cell carcinoma but it has modest efficacy. Hymecromone is a nontoxic dietary supplement with some antitumor activity at high doses of 450 to 3,000 mg per day. Hymecromone inhibits the synthesis of hyaluronic acid, which promotes tumor growth and metastasis. We recently noted that the hyaluronic acid receptors CD44 and RHAMM are potential predictors of metastatic renal cell carcinoma. In the current study we examined the antitumor properties of hymecromone, sorafenib and the combination in renal cell carcinoma models. Materials and Methods: Using proliferation, clonogenic and apoptosis assays, we examined the effects of hymecromone (0 to 32 μg/ml), sorafenib (0 to 3.2 μg/ml) and hymecromone plus sorafenib in Caki-1, 786-O, ACHN and A498 renal cell carcinoma cells, and HMVEC-L and HUVEC endothelial cells. A Boyden chamber was used for motility and invasion assays. Apoptosis indicators, hyaluronic acid receptors, epidermal growth factor receptor and c-Met were evaluated by immunoblot. The efficacy of hymecromone, sorafenib and hymecromone plus sorafenib was assessed in the sorafenib resistant Caki-1 xenograft model. Results: Hymecromone plus sorafenib synergistically inhibited proliferation (greater than 95%), motility/invasion (65%) and capillary formation (76%) in renal cell carcinoma and/or endothelial cells, and induced apoptosis eightfold (p <0.001). Hymecromone plus sorafenib inhibited hyaluronic acid synthesis and adding hyaluronic acid reversed the cytotoxicity of hymecromone plus sorafenib. Hymecromone plus sorafenib up-regulated pro-apoptotic indicators and down-regulated Mcl-1, CD44, RHAMM, phospho-epidermal growth factor receptor and phospho-cMet. In all assays hymecromone and sorafenib alone were ineffective. Oral administration of hymecromone (50 to 200 mg/kg) plus sorafenib (30 mg/kg) eradicated Caki-1 tumor growth without toxicity. Hymecromone and sorafenib alone were ineffective. Conclusions: To our knowledge this is the first study to show that the combination of sorafenib and the nontoxic dietary supplement hymecromone is highly effective for controlling renal cell carcinoma. 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Google Scholar © 2013 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 190Issue 1July 2013Page: 285-290Supplementary Materials Advertisement Copyright & Permissions© 2013 by American Urological Association Education and Research, Inc.Keywordscarcinoma, renal cellkidneyneoplasm invasivenesssorafenibhymecromoneMetricsAuthor Information Anaid Benitez Sylvester Comprehensive Cancer Center, University of Miami-Miller School of Medicine, Miami, Florida Equal study contribution. More articles by this author Travis J. Yates Sylvester Comprehensive Cancer Center, University of Miami-Miller School of Medicine, Miami, Florida Equal study contribution. More articles by this author N. Shamaldevi Department of Urology, University of Miami-Miller School of Medicine, Miami, Florida More articles by this author Tim Bowen Section of Nephrology, Institute of Molecular and Experimental Medicine, Cardiff University School of Medicine, Cardiff, United Kingdom More articles by this author Vinata B. Lokeshwar Sylvester Comprehensive Cancer Center, University of Miami-Miller School of Medicine, Miami, Florida Department of Urology, University of Miami-Miller School of Medicine, Miami, Florida Department of Cell Biology, University of Miami-Miller School of Medicine, Miami, Florida More articles by this author Expand All Advertisement PDF downloadLoading ..." @default.
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- W2045550424 title "Dietary Supplement Hymecromone and Sorafenib: A Novel Combination for the Control of Renal Cell Carcinoma" @default.
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