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Article Publish Status: FREE
Abstract Title:

A novel derivative of betulinic acid, SYK023, suppresses lung cancer growth and malignancy.

Abstract Source:

Oncotarget. 2015 May 30 ;6(15):13671-87. PMID: 25909174

Abstract Author(s):

Tsung-I Hsu, Ying-Jung Chen, Chia-Yang Hung, Yi-Chang Wang, Sin-Jin Lin, Wu-Chou Su, Ming-Derg Lai, Sang-Yong Kim, Qiang Wang, Keduo Qian, Masuo Goto, Yu Zhao, Yoshiki Kashiwada, Kuo-Hsiung Lee, Wen-Chang Chang, Jan-Jong Hung

Article Affiliation:

Tsung-I Hsu

Abstract:

Herein, we evaluated the anti-cancer effect and molecular mechanisms of a novel betulinic acid (BA) derivative, SYK023, by using two mouse models of lung cancer driven by KrasG12D or EGFRL858R. We found that SYK023 inhibits lung tumor proliferation, without side effects in vivo or cytotoxicity in primary lung cells in vitro. SYK023 triggered endoplasmic reticulum (ER) stress. Blockage of ER stress in SYK023-treated cells inhibited SYK023-induced apoptosis. In addition, we found that the expression of cell cycle-related genes, including cyclin A2, B1, D3, CDC25a, and CDC25b decreased but, while those of p15INK4b, p16INK4a, and p21CIP1 increased following SYK023 treatment. Finally, low doses of SYK023 significantly decreased lung cancer metastasis in vitro and in vivo. Expression of several genes related to cell migration, including synaptopodin, were downregulated by SYK023, thereby impairing F-actin polymerization and metastasis. Therefore, SYK023 may be a potentially therapeutic treatment for metastatic lung cancer.

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Sayer Ji
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