脱氧雪腐镰刀烯醇对CHO-K1和HL-7702细胞毒性的研究
首发时间:2012-10-31
摘要:在培养基中加入不同浓度脱氧雪腐镰刀烯醇(deoxynivalenol,DON)(终浓度分别为0,100,200,400.800 ng/mL),分别用MTT法测定DON对中国仓鼠卵巢细胞(CHO-K1)和人肝细胞(HL-7702)的毒性作用,用放射免疫法测定细胞上清液中的白介素-2(IL-2)、白介素-6(IL-6)和肿瘤坏死因子-α(TNF-α)的浓度。结果表明在低浓度(100~200 ng/mL)时DON对细胞上清液中IL-2、IL-6和TNF-α的浓度没有明显的抑制作用(p>0.05),但在高浓度(400~800 ng/mL)时,却表现为抑制作用(p<0.05)。通过MTT法测得CHO-K1和HL-7702的半数抑制浓度(IC50)分别为123.5和336.2 ng/mL。同时在高浓度(400~800 ng/mL)时能明显抑制CHO-K1和HL-7702的生长(p<0.05)。
关键词: 临床兽医学 脱氧雪腐镰刀菌烯醇 CHO-K1 HL-7702 细胞毒性
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The cytotoxicity of CHO-K1 and HL-7702 induced by deoxynivalenol
Abstract:Different final concentrations of deoxynivalenol (DON) including 0, 100, 200, 400,800 ng/mL were added in the cultures of the CHO-K1 and HL-7702 cell lines. The cytotoxicity of CHO-K1 and HL-7702 induced by DON was detected by MTT. The concentration of IL-2,IL-6 and TNF-α in supernatants were detected by radioimmunity (RI). The results showed that the concentration of IL-2,IL-6 and TNF-α increased at the low dose (100~200 ng/mL) in supernatants. However, at the high dose(400~800 ng/mL), they were repressed (p<0.05). The 50% inhibiting concentration (IC50) of the CHO-K1 and HL-7702 cell lines was 123.5 and 336.2 ng/mL respectively. At the high dose of DON, the growth of CHO-K1 and HL-7702 cell lines was inhibited significantly (p<0.05).
Keywords: Clinical veterinary medicine deoxynivalenol CHO-K1 HL-7702 cytotoxicity
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