Inhibition of Wnt/beta-Catenin Signaling Sensitizes Esophageal Cancer Cells to Chemoradiotherapy
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES(2021)
摘要
The standard treatment of locally advanced esophageal cancer comprises multimodal treatment concepts including preoperative chemoradiotherapy (CRT) followed by radical surgical resection. However, despite intensified treatment approaches, 5-year survival rates are still low. Therefore, new strategies are required to overcome treatment resistance, and to improve patients' outcome. In this study, we investigated the impact of Wnt/beta-catenin signaling on CRT resistance in esophageal cancer cells. Experiments were conducted in adenocarcinoma and squamous cell carcinoma cell lines with varying expression levels of Wnt proteins and Wnt/beta-catenin signaling activities. To investigate the effect of Wnt/beta-catenin signaling on CRT responsiveness, we genetically or pharmacologically inhibited Wnt/beta-catenin signaling. Our experiments revealed that inhibition of Wnt/beta-catenin signaling sensitizes cell lines with robust pathway activity to CRT. In conclusion, Wnt/beta-catenin activity may guide precision therapies in esophageal carcinoma patients.
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关键词
esophageal cancer, chemoradiotherapy, treatment resistance, chemoradiotherapy-sensitization, Wnt/beta-catenin pathway, tankyrase inhibition
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