机构地区:[1]广西医科大学药学院,广西南宁530021 [2]抗毒药物与毒理学国家重点实验室,军事医学科学院毒物药物研究所军事毒理与生化药理研究室,北京100850
出 处:《中国药理学与毒理学杂志》2015年第2期253-259,共7页Chinese Journal of Pharmacology and Toxicology
基 金:国家科技重大专项(2012ZX09301003);国家自然科学基金(30973563)~~
摘 要:目的研究多硫代二酮哌嗪类化合物C87对肿瘤细胞生长的影响及其可能机制。方法用磺酰罗丹明B法观察C87 0.05~1μmol·L-1与A549,HCT116,He La和SMMC7721作用24,48和72 h对肿瘤细胞存活率的影响,并计算50%生长抑制浓度(GI50);用流式细胞术检测C87 0.1~2.5μmol·L-1作用HCT116和He La细胞6 h,C87 2.5μmol·L-1作用0~6 h活性氧(ROS)的生成量;用流式细胞术检测C872.5μmol·L-1伴随给予抗氧化剂N-乙酰半胱氨酸(NAC)作用HCT116和He La细胞6 h ROS的生成量;用SRB法观察C87 0.05~1μmol·L-1伴随给予NAC作用24和48 h对HCT116细胞存活率的影响。结果C87 0.05~1μmol·L-1作用24,48和72 h,可明显抑制A549,HCT116,He La和SMMC7721细胞存活(P〈0.05),且具有浓度依赖性(72 h,r2=0.946,0.989,0.973和0.984,P〈0.05);C87 1μmol·L-1与上述4种肿瘤细胞作用24,48和72 h能时间依赖性地抑制细胞存活(r2=0.983,0.956,0.951和0.873,P〈0.05)。C87 0.25~2.5μmol·L-1与He La细胞和HCT116细胞作用6 h,可诱发细胞内ROS产生,且呈浓度依赖性(r2=0.760,P=0.045;r2=0.987,P=0.001);C87 2.5μmol·L-1作用0.5~6 h,诱导ROS的产生呈时间依赖性(r2=0.886,P=0.017;r2=0.994,P=0.000)。给予抗氧化剂NAC后能明显抑制C87引起的He La细胞和HCT116细胞ROS生成(P〈0.05),NAC 5和10 mmol·L-1可明显逆转C87引起的HCT116细胞死亡,GI50值明显增大,作用24 h时GI50为1.446和1.134μmol·L-1(C87处理组为0.513μmol·L-1);处理48 h时GI50为0.882和1.166μmol·L-1(C87处理组为0.333μmol·L-1)。结论化合物C87对A549,HCT116,He La和SMMC7721肿瘤细胞的生长具有抑制作用,其机制可能与其诱导细胞内氧化应激有关。OBJECTIVE To study the effect of epipolythiodioxopiperazine compound C87 on tumor cell proliferation and explore the potential mechanisms. METHODS Tumor cells were exposed to C87 0.05-1 μmol.L-1 for 24, 48 and 72 h, cell viability was determined by sulforhodamine B (SRB) assay and the half growth inhibition (Gl50 ) was calculated. After treatment with C87 0.1-2.5 μmol.L-1 for 6 h, or C87 2.5 μmol.L-1 for 0-6 h, the generation of reactive oxygen species (ROS) was measured using the compound 2′,7′-dichlorofluoresceindiacetate and flow cytometry analysis. After treatment with C87 2.5 μmol.L-1 , either alone or with antioxidant N-acetylcysteine (NAC), for 6 h, the generation of ROS was measured by flow cytometry analysis. Tumor cells were exposed to C87 0.05-1 μmol.L-1 , either alone or with NAC, for 24 and 48 h, while cell viability was determined by SRB assay. RESULTS The cell viability was significantly reduced following exposure to C87 0.05-1 μmol.L-1 for 24, 48 and 72 h in a concentration-dependent manner in A549, HCT116, HeLa and SMMC7721 cells(P〈0.05). At 72 h, the value of r2 was 0.946, 0.989, 0.973 and 0.984(P〈0.05), respectively. The cell viability was significantly reduced following exposure to C87 1 μmol.L-1 for 24 - 72 h in a time-dependent manner in A549, HCT116, HeLa and SMMC7721 cells(P〈0.05). The value of r2 was 0.983, 0.956, 0.951 and 0.873(P〈0.05), respectively. The generation of ROS was increased after exposure to C87 0.25-2.5 μmol.L-1 in a concentration-dependent manner in HCT116 and HeLa cells for 6 h (r2 = 0.760, P = 0.045: r2 = 0.987, P=0.001), and after exposure to C87 2.5 μmol.L-1 in a time-dependent manner in HCT116 and HeLa cells for 0.5-6 h (r2 = 0.886, P = 0.017: r2 = 0.994, P = 0.000).The C87-induced ROS generation could be blocked by NAC in HCT116 and HeLa cells(P〈0.05). The C87 induced cell death could be blocked by NAC 5 and 10 mmol.L-1 , and the Gl50 value was 1.446 and 1.134 μmol.L-1 for 24 h (the Gl50 value
关 键 词:多硫代二酮哌嗪类化合物 C87 肿瘤细胞 培养的 活性氧
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