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• W1994435939 abstract "Proceedings: AACR 104th Annual Meeting 2013; Apr 6-10, 2013; Washington, DCIntroduction: Clear cell renal cell carcinoma (ccRCC) is the most common subtype of RCC, which is the most prevalent kidney cancer among adults. Of the patients who develop this disease, over 1/3 will already present with advanced or metastatic disease during initial diagnosis due to the lack of symptoms in early stages. RCC demonstrates considerable resistance to radiation and traditional chemotherapeutics. Despite advances in the development of targeted anti-cancer treatments, no current drug therapy leads to significant improvement in long term survival in patients with advanced disease with the rare exception of those who respond to immunotherapy. Additionally, patients inevitably develop drug resistance. Therefore new molecular targets for therapy are sorely needed. Our group has identified stearoyl coA desaturase (SCD1) as a novel molecular target in ccRCC. We examined its role in tumor cell growth and viability in vitro and in vivo independently as well as in combination with current FDA approved regimens. Methods: Patient normal and ccRCC tissue samples and cell lines were examined for SCD1 expression. Genetic knockdown models and targeted inhibition of SCD1 through use of a small molecule inhibitor were analyzed for growth, apoptosis, and alterations in gene expression using gene array analysis. Therapeutic models of synergy were evaluated utilizing pharmacologic inhibition of SCD1 with the tyrosine kinase inhibitors (TKI) sunitinib and pazopanib, and the mTOR inhibitor temsirolimus. Results: Our studies identify increased SCD1 expression in all stages of ccRCC. Both genetic knockdown and pharmacologic inhibition of SCD1 decrease tumor cell proliferation and induce apoptosis in vitro and in vivo . Upon gene array, quantitative real-time PCR, and protein analysis of SCDi treated or SCD1 lentiviral knockdown samples, induction of endoplasmic reticulum (ER) stress response signaling was observed, providing mechanistic insight for SCD1 activity in ccRCC. Furthermore, combinatorial application of SCDi with temsirolimus synergistically inhibits tumor growth in vitro and in vivo . Conclusions: Increased SCD1 expression supports ccRCC viability and therefore we propose it as a novel molecular target for therapy either independently or in combination with an mTOR inhibitor for patients whose disease cannot be remedied with surgical intervention, such as in cases of advanced or metastatic disease. These findings support the further evaluation of targeting SCD1 as an anti-cancer strategy in a phase I clinical trial.Citation Format: Christina A. von Roemeling, Laura Marlow, Thomas Caulfield, Kevin Wu, Winston Tan, Han Tun, John A. Copland, Adam Mathias, Chuck Harrison, Louis Dawson, Beth Hollister. Stearoyl-CoA desaturase 1 is a novel molecular therapeutic target for clear cell renal cell carcinoma. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr LB-210. doi:10.1158/1538-7445.AM2013-LB-210" @default.
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• W1994435939 date "2013-04-15" @default.
• W1994435939 modified "2023-09-25" @default.
• W1994435939 title "Abstract LB-210: Stearoyl-CoA desaturase 1 is a novel molecular therapeutic target for clear cell renal cell carcinoma." @default.
• W1994435939 doi "https://doi.org/10.1158/1538-7445.am2013-lb-210" @default.
• W1994435939 hasPublicationYear "2013" @default.
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