Bivalent β-Carbolines Inhibit Colorectal Cancer Growth through Inducing Autophagy
作者:Huihui Zhang、Rihui Cao、Feng Zeng、Wenxi Fan、Liang Guo、Qin Ma、Shaobo Ke
DOI:10.1248/cpb.c21-00588
日期:2021.11.1
In this study, a series of alkyl diamine linked bivalent β-carbolines was synthesized and evaluated as antitumor agent. The results demonstrated that most compounds displayed good antiproliferative activities with IC50 value lower than 10 µM against a panel of human tumor cell lines, and compound 8 was found to be the most potent antiproliferative agent with IC50 value of 1.39, 1.96, 1.42, 1.49, 1.32, 1.96 and 1.63 µM against human breast cancer cell line (MCF-7), human adenocarcinoma cell line (769-P), human malighant melanoma cell line (A375), human ovarian cancer cell line (SK-OV-3), human colon carcinoma cell line (HCT-116), human gastric cancer cell line (BGC-823) and human esophageal squamous carcinoma cell line (Eca-109), respectively. Further investigations on mechanism of action of this class of compound demonstrated that the representative compound 8 inhibited colorectal cancer growth through inducing autophagy.
by 3-fold from pH 7.4 to 4.5. Most interestingly, 10f exhibited robust antiproliferative effects by tumor-selective cytotoxicities and hypoxic-overcoming phototoxicities. In addition, 10f generated intracellular ROS and induced hepatocellular apoptosis, mitochondrial damage, and autophagy. Finally, 10f demonstrated extremely low acute toxicity (LD50 = 1415 mg/kg) and a high tumor-inhibitory rate of 80
化学光动力疗法是一种结合化疗和光动力疗法的治疗方法,在癌症治疗中表现出巨大的潜力。然而,开发副作用较少的化学光动力治疗剂仍然面临挑战。在此,我们设计并合成了一系列新型β-咔啉/呋喃基丙二腈杂化物10a – i ,并评估了它们的化学光动力治疗效果。大多数化合物具有光动力活性,并在四种癌细胞中表现出细胞毒性作用。特别是10f具有I/II型光动力特性,其1 O 2量子产率从pH 7.4到4.5增加了3倍。最有趣的是, 10f通过肿瘤选择性细胞毒性和克服缺氧的光毒性表现出强大的抗增殖作用。此外, 10f产生细胞内 ROS 并诱导肝细胞凋亡、线粒体损伤和自噬。最后, 10f通过化学光动力双重治疗表现出极低的急性毒性(LD 50 = 1415 mg/kg)和高达80.5%的肿瘤抑制率。我们的研究结果可能为化学光动力疗法的新型光敏剂的设计提供一个有前途的框架。