Genistein Enhances TRAIL-Mediated Apoptosis Through the Inhibition of XIAP and DcR1 in Colon Carcinoma Cells Treated with 5-Fluorouracil

IF 1.8 Q3 PHARMACOLOGY & PHARMACY
T. Çal, S. Aydın Dilsiz, H. Canpınar, Ülkü Ündeğer Bucurgat
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引用次数: 0

Abstract

Objectives: Colorectal cancer is one of the most common cancers in the world. However, surgical intervention and chemotherapy provide only limited benefits for the recovery and survival of patients. The anti-carcinogenic effect of genistein has attracted attention due to epidemiological studies showing that soybean consumption is associated with a decrease in incidence of cancer. There are limited studies on the effects of genistein in colorectal carcinoma cells. We aimed to investigate the cytotoxic, genotoxic, and apoptotic effects of genistein in SW480 and SW620 colon adenocarcinoma cells treated with 5-fluorouracil, the basis of chemotherapy, and TRAIL ligand, the mediator of apoptosis, both alone and in combination. Materials and Methods: The cytotoxicity and genotoxicity were determined by MTT assay and comet assay, respectively. The apoptotic effects were evaluated by RT-PCR assay, with the additional use of Annexin V FITC, mitochondrial membrane potential, caspase 3, 8 and 9 activity, reactive oxygen species assay kits. Results: According to our findings, genistein, 5-fluorouracil and TRAIL had synergistic apoptotic effects as a result of DR5 up-regulation, ROS production, and DNA damage, which was mediated by increased caspase 3, 8 and 9 activity and decreased mitochondrial membrane potential. Conclusion: The applied combinations of these compounds may contribute to the resistance problem that may occur in the treatment of colorectal cancer, with the decrease in DcR1 and XIAP genes.
染料木黄酮通过抑制XIAP和DcR1增强5-氟尿嘧啶诱导的结肠癌细胞凋亡
目的:癌症是世界上最常见的癌症之一。然而,手术干预和化疗对患者的康复和生存只有有限的益处。染料木黄酮的抗癌作用引起了人们的关注,因为流行病学研究表明,食用大豆与癌症发病率的降低有关。关于染料木素在结直肠癌细胞中的作用的研究有限。我们的目的是研究染料木黄酮在单独或联合使用化疗基础5-氟尿嘧啶和凋亡介质TRAIL配体处理的SW480和SW620结肠癌细胞中的细胞毒性、基因毒性和凋亡作用。材料与方法:分别用MTT法和彗星法测定细胞毒性和遗传毒性。通过RT-PCR测定评估细胞凋亡作用,并额外使用膜联蛋白V FITC、线粒体膜电位、胱天蛋白酶3、8和9活性、活性氧测定试剂盒。结果:根据我们的研究结果,染料木黄酮、5-氟尿嘧啶和TRAIL具有协同凋亡作用,这是DR5上调、ROS产生和DNA损伤的结果,这是由胱天蛋白酶3、8和9活性增加和线粒体膜电位降低介导的。结论:应用这些化合物的组合可能导致治疗癌症时可能出现的耐药性问题,DcR1和XIAP基因减少。
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来源期刊
CiteScore
3.60
自引率
5.90%
发文量
79
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