European Journal of Medicinal Chemistry p. 902 - 913 (2017)
Update date:2022-08-15
Topics:
Zheng, Yanyan
Zhu, Li
Fan, Lulu
Zhao, Wenna
Wang, Jianlong
Hao, Xianxiao
Zhu, Yunhui
Hu, Xiufang
Yuan, Yaofeng
Shao, Jingwei
Wang, Wenfeng
Emodin, a natural anthraquinone derivative isolated from Rheum palmatum L., has been demonstrated to exhibit good anti-cancer effect. In this study, a series of novel quaternary ammonium salts of emodin, anthraquinone and anthrone were synthesized and their anticancer activities were tested in vitro. The effects of emodin quaternary ammonium salts on cell viability, apoptosis, intracellular ROS, and mitochondrial membrane potential were investigated in A375, BGC-823, HepG2 and HELF cells. The results demonstrated that compound 4a induced morphological changes and decreased cell viability. Apoptosis triggered by compound 4a was visualized using DAPI staining and Annexin V-FITC/PI staining. Compound 4a-induced apoptosis of A375 cells were showed to be associated with the dissipation of mitochondrial membrane potential (ΔΨm) as a result of the up-regulation of P53 and Caspase-3. When cancer cells were treated with emodin derivative, their ability to generate reactive oxygen species (ROS) rose significantly and the mitochondrial membrane potential decreased. Additionally, confocal microscopy assay confirmed that compound 4a was primarily located in the mitochondria of A375 cells. These results suggested that compound 4a has the potential for use in cancer therapy.
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