Document Report Card
Basic Information
ID: ALA5247647
Journal: J Med Chem
Title: Phenothiazine-Based LSD1 Inhibitor Promotes T-Cell Killing Response of Gastric Cancer Cells.
Authors: Dai XJ, Zhao LJ, Yang LH, Yang LH, Guo T, Xue LP, Ren HM, Yin ZL, Xiong XP, Zhou Y, Ji SK, Liu HM, Liu HM, Liu Y, Zheng YC.
Abstract: Histone lysine specific demethylase 1 (LSD1) has been recognized as an important epigenetic target for cancer treatment. Although several LSD1 inhibitors have entered clinical trials, the discovery of novel potent LSD1 inhibitors remains a challenge. In this study, the antipsychotic drug chlorpromazine was characterized as an LSD1 inhibitor (IC50 = 5.135 μM), and a series of chlorpromazine derivatives were synthesized. Among them, compound 3s (IC50 = 0.247 μM) was the most potent one. More importantly, compound 3s inhibited LSD1 in the cellular level and downregulated the expression of programmed cell death-ligand 1 (PD-L1) in BGC-823 and MFC cells to enhance T-cell killing response. An in vivo study confirmed that compound 3s can inhibit MFC cell proliferation without significant toxicity in immunocompetent mice. Taken together, our findings indicated that the novel LSD1 inhibitor 3s tethering a phenothiazine scaffold may serve as a lead compound for further development to activate T-cell immunity in gastric cancer.
CiteXplore: 36856685