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The Inhibitory Effect of Curcumin on Ornithine Decarboxylase against Hepatic Carcinoma
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作者 Abeer A. Khamis Amira H. Sharshar +1 位作者 Amal H. Mahmoud Tarek M. Mohamed 《Journal of Biosciences and Medicines》 2019年第5期127-145,共19页
Curcumin the active component of turmeric is widely used as an anticancer agent for treating many human cancers. This study aimed at the extraction of curcumin from Curcuma Longa and investigates its therapeutic effec... Curcumin the active component of turmeric is widely used as an anticancer agent for treating many human cancers. This study aimed at the extraction of curcumin from Curcuma Longa and investigates its therapeutic effect as ornithine decarboxylase (ODC) inhibitor in HepG2 cells. The proliferation of HepG2 cells was carried out by using the MTT assay. In addition, cell cycle analysis was evaluated by using the flow-cytometric technique. Our results showed that curcumin has the ability to inhibit the proliferation of HepG2 cells with IC50 of 24.79 μg/ml and induced G2/M cell cycle arrest. Moreover, it caused an elevation in the intracellular concentration of Ca2+. Moreover, in the curcumin administration the downregulation expression level of ODC and Bcl-2 genes (p ≤ 0.05) was significant found. On the other hand, upregulation in the expression level of P53, Bax, and caspase-3 genes (p ≤ 0.05). This study concluded that curcumin may be considered as a new saving candidate for the future progress of antitumor agents. 展开更多
关键词 Curcumin-HepG2 cells-apoptosis ORNITHINE DECARBOXYLASE Bax CELL Cycle
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衰老标记蛋白30高表达对紫外线诱导人晶状体上皮细胞凋亡的影响 被引量:10
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作者 滕贺 黄亮瑜 +2 位作者 田芳 东莉洁 张红 《中华眼科杂志》 CSCD 北大核心 2017年第11期835-841,共7页
目的 探讨衰老标记蛋白30(SMP-30)高表达对于紫外线B(UVB)诱导人晶状体上皮细胞凋亡的影响.方法 实验研究.以人晶状体上皮细胞系(HLE-B3)为模型,构建真核质粒pRFP-N1-SMP-30,利用脂质体转染的方法将其导入不同分组的细胞中,并以UV... 目的 探讨衰老标记蛋白30(SMP-30)高表达对于紫外线B(UVB)诱导人晶状体上皮细胞凋亡的影响.方法 实验研究.以人晶状体上皮细胞系(HLE-B3)为模型,构建真核质粒pRFP-N1-SMP-30,利用脂质体转染的方法将其导入不同分组的细胞中,并以UVB刺激,用MTT法检测高表达的SMP-30对UVB诱导的HLE-B3细胞生存力的影响;利用细胞凋亡检测试剂盒测定高表达的SMP-30对UVB诱导的HLE-B3细胞凋亡的作用;并用免疫印迹法验证高表达的SMP-30对UVB诱导的凋亡相关蛋白表达的影响,通过活性氧自由基水平的检测分析高表达的SMP-30对UVB诱导的HLE-B3细胞活性氧表达的作用.数据的分析选择方差分析联合Dunnett的统计学方法.结果DNA测序证实插入的序列正确,证明pRFP-N1-SMP-30质粒构建成功.UVB照射后SMP-30高表达组HLE-B3细胞生存率为0.90±0.14,细胞的凋亡率为0.43±0.06,活性氧的水平0.52±0.02,与对照组相比差异均有统计学意义(t=5.830,9.934,12.19;P〈0.05).UVB处理后,SMP-30高表达可显著下调Bax和cleav-caspase-3的表达,同时上调Bcl-2和Pro-caspase-3的表达.结论 高表达的SMP-30通过调控凋亡相关蛋白的表达及抑制活性氧的产生来缓解UVB照射导致的人晶状体上皮细胞的凋亡,从而发挥对晶状体上皮细胞的保护作用. 展开更多
关键词 晶体 上皮细胞 细胞凋亡 钙结合蛋白质类 胞间信号肽类和蛋白质类 紫外线 氧化性应激
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