Abstract
Abstract Lung cancer is the most frequent cause of cancer deaths worldwide and its overall prognosis remains poor. Therefore, next generation of biomarkers and therapeutic strategies for lung cancer are eagerly awaited. We selected genes that were overexpressed in the majority of lung cancer using our gene expression profile database. During this process, we identified URST1 (Up-regulated in solid tumor 1) as a candidate. Immunohistochemical staining showed that URST1 expression was observed in the majority of non-small cell lung cancer (NSCLC) patients (P = 0.0013 by log rank test). Multivariate analysis revealed high level of URST1 expression was an independent prognostic factor for NSCLC patients. Moreover, reduction of URST1 by siRNA or treatment with URST1 inhibitor significantly suppressed lung cancer cell growth probably through cell cycle arrest at G2/M. Exposure of cancer cells to URST1 inhibitor significantly suppressed These data suggest that URST1 is a possible prognostic biomarker and therapeutic target for lung cancer. Citation Format: Atsushi Takano, Yohei Miyagi, Yataro Daigo. Characterization of URST1 as a prognostic biomarker and therapeutic target for lung cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 4130. doi:10.1158/1538-7445.AM2017-4130
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