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- W1974562605 abstract "Proceedings: AACR 104th Annual Meeting 2013; Apr 6-10, 2013; Washington, DCReactive oxygen species (ROS) are recently known as a contributor to tumor progression and metastasis through several mechanisms including induction of epithelial-mesenchymal transition (EMT), invasion, and tumor angiogenesis. In this study, we investigated the role of alpha-Lipoic acid (ALA), a potential antioxidant, on EMT in thyroid cancer cell lines. Human thyroid cancer-derived cell lines, BCPAP (BRAF V600E), HTH83 (HRAS Q61R), CAL62 (KRAS G12R), BHT101 (BRAF V600E), and FTC133 (PTEN null) were treated with ALA, and changes in ROS generation were measured by DCFH-DA. The expression of E-cadherin, vimentin and Twist were determined by immunoblot analysis. Cell migration and invasion were evaluated by scratch assay and by Boyden chamber assay. ALA significantly decreased intracellular ROS generation in most cell lines. The total amount of E-cadherin increased and those of vimentin and Twist decreased after ALA treatment in 4 thyroid cancer cell lines (BCPAP, HTH83, BHT101 and CAL62) in a dose-dependent manner (0.2∼1.0 mM). But, the changes in E-cadherin, vimentin and Twist were opposite in FTC133 cells. The cell migration and invasion ability decreased after treatment with ALA in all cell lines except FTC133 (PTEN null cell). These results suggest that ALA is a potential agent to inhibit EMT resulting in suppression of migration and of invasiveness in thyroid cancer cell lines with RAS or BRAF mutation, probably through reducing cellular amount of Twist. We suggest that it might be caused by antioxidant effects of ALA, but the exact mechanism of action of ALA is not clear yet. ALA could be a novel, potential agent to suppress metastasis of tumors in patients with thyroid cancer.Citation Format: Ji Min Han, Hyun-Jeung Choi, Ji Hye Yim, Won Gu Kim, Tae Yong Kim, Young Kee Shong, Eui Young Kim, Won Bae Kim. Alpha-Lipoic acid suppresses migration and invasiveness of thyroid cancer cells through inhibition of epithelial-mesenchymal transition . [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 1498. doi:10.1158/1538-7445.AM2013-1498" @default.
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- W1974562605 date "2013-04-15" @default.
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- W1974562605 title "Abstract 1498: Alpha-Lipoic acid suppresses migration and invasiveness of thyroid cancer cells through inhibition of epithelial-mesenchymal transition ." @default.
- W1974562605 doi "https://doi.org/10.1158/1538-7445.am2013-1498" @default.
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