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The Exploration of Indole-Based LSD1-Targeted Inhibitors for Enhanced Immune Response in Gastric Cancer via the
Hang Zhang1, Yujie Zhang1, Yinping Geng1
1Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education and School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China.
Abstract:
Gastric cancer is one of the major health threats to human beings and has a low response rate to emerging immunotherapy. We herein reported a novel indole-based LSD1-targeted antigastric agent 7ae, which was able to enhance the sensitivity of gastric cancer cells to a T-cell-mediated immune response. It exhibited potent LSD1 inhibitory activity (IC50 = 0.080 ± 0.002 μM) and reduced the expression of PD-L1, which in turn promoted the T-cell killing response in gastric cancer cells. As a result, 7ae acted as an active LSD1 inhibitor, exerting excellent anti-invasion and anti-migration effects in gastric cancer cells and leading to significant suppression of the growth of xenograft gastric tumors without obvious toxicity in vivo. Collectively, 7ae has been demonstrated to be a novel, potent LSD1 inhibitor with the potential to be used as an antigastric agent, as well as a useful tool compound for exploratory studies of T-cell-mediated immunity and/or immunotherapy in gastric cancer.
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