T-2毒素和硒对软骨不同分化层细胞增殖的影响  被引量:2

Effects of T-2 toxin and selenium on cell proliferation in murine pre-ehondrogenic cell line at different differentiation stages

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作  者:何颖[1] 陈静宏[1] 张丹[1] 王梦莹[1] 曹峻岭[1] 张莹[1] 马天有[1] 张迎[1] 刘慧中[1] 

机构地区:[1]西安交通大学医学部地方病研究所国家卫生计生委微量元素与地方病重点实验室,西安710061

出  处:《中华地方病学杂志》2016年第7期477-482,共6页Chinese Journal of Endemiology

基  金:国家自然科学基金(81273006、81573102)

摘  要:目的检测T-2毒素和硒对软骨不同分化层细胞增殖的影响,为大骨节病软骨损伤研究提供依据。方法用分化培养基(常规培养液含1%ITS)分别诱导鼠软骨前体细胞系ATDC50、7、14、21d,实时荧光定量PCR(Real-Time PCR)检测胶原蛋白Ⅱ(ColⅡ)、胶原蛋白X(Col X)的mRNA水平.确定其处于软骨不同分化层;T-2毒素(含量分别为1、5、10、20、50、100μg/L)和T-2毒素+硒(0.1mg/L)分别作用于ITS诱导0、7、14、21d的ATDC5细胞24、48h,噻唑蓝(MTr)法检测T-2毒素和硒对软骨不同分化层细胞增殖的影响。结果ITS诱导ATDC5细胞14、21d,软骨细胞C01UmRNA(10.73±4.55、3.16±0.19)均高于0d(1.00±0.00,P均〈0.05);ITS诱导ATDC5细胞21d,软骨细胞ColXmRNA(49.21±9.54)显著高于0d(1.00±0.00,P〈0.05)。低含量T-2毒素(1、5、10μg/L)作用不同分化层细胞24h出现代谢性补偿现象刺激细胞增殖,作用48h无代谢补偿现象;中高含量T-2毒素(20、50、100μg/L)作用不同分化层细胞24、48h,T-μ2毒素对21d细胞的抑制率[24h:(13.92±2.47)%、(47.78±4.22)%、(67.24±2.48)%,48h:(15.84±2.85)%、(55.31±0.50)%、(70.89±9.88)%]均低于0d[24h:(38.46±6.14)%、(53.20±6.20)%、(73.94±1.93)%,48h:(74.83±1.80)%、(88.98±1.51)%、(92.68±0.42)%]、7d[24h:(24.15±1.27)%、(45.19±1.29)%、(71.79±0.94)%,48h:(47.91±4.71)%、(77.84±0.52)%、(89.41±0.52)%]、14d[24h:(25.87±5.41)%、(62.50±2.50)%、(75.34±1.81)%,48h:(59.53±1.13)%、(80.32±4.54)%、(95.22±1.22)%,P均〈0.05]。T-2毒素+硒作用不同分化层细胞48h,中高含量T-2毒素(20、50、100μg/L)+硒时,T-2毒素对21d细胞的抑�Objective To investigate the effects of T-2 toxin and selenium on cell proliferation in murine pre-chondrogenic cell line ATDC5 at different differentiation stages. Methods ATDC5 was induced by ITS medium respectively for 0, 7,14,21 days, and then the mRNA levels of collagen Ⅱ (Col Ⅱ) and collagen X (Col X) were determined by real-time PCR to indentify the cells at different differentiation stages. T-2 toxin (1, 5, 10,20, 50, 100 μg/L) and T-2 toxin with selenium (0.1 mg/L) were applied to ATDC5 (0, 7, 14,21 days) for 24 and 48 h, the effects of T-2 toxin and selenium on cell viability was detected by MTT assay. Results The mRNA expression of Col II was increased both at 14 and 21 days than that of 0 day (10.73 ± 4.55, 3.16 ±0.19 vs 1.00 ± 0.00, P 〈 0.05); the mRNA expression of Col X was increased at 21 days than that of 0 day (49.21 ± 9.54 vs 1.00 ± 0.00, P 〈 0.05). After treatment with T-2 toxin at lower concentrations (1, 5, 10μg/L), metabolic compensation appeared at 24 h, and no difference was found among the different layers at 48 h. At the higher concentrations (20, 50, 100 Ixg/L), the suppression ratios of cells at 21 days [24 h: (13.92 ± 2.47)%, (47.78 ± 4.22)%, (67.24 ± 2.48)%; 48 h: (15.84 ± 2.85)%, (55.31± 0.50)%, (70.89 ± 9.88)%] were lower than those of 0 d [24 h: (38.46 ± 6.14)%, (53.20 ± 6.20)%, (73.94 ± 1.93)%; 48 h: (74.83 ± 1.80)%, (88.98 ± 1.51)%, (92.68 ±0.42)], 7 d [24 h: (24.15 ± 1.27)%, (45.19 ± 1.29)%, (71.79± 0.94)%; 48 h: (47.91 ±4,71)%, (77.84± 0.52)%, (89.41 ± 0.52 )%] and 14 d [24 h: (25.87 ± 5.41)%, (62.50±2.50)%, (75.34 ± 1,81)%; 48 h: (59.53 ± 1.13)%, (80.32 ± 4.54)%, (95.22 ± 1.22)%, all P〈 0.05]. After addition of selenium, the suppression ratios of cells at 21 days [(13.60± 0.50)%, (50.76 + 6.99)%, (82.54 ± 2.52)%] were still lower than those of 0 d [(72.65 ± 5.80)%, (

关 键 词:T-2毒素  大骨节病 

分 类 号:R684.1[医药卫生—骨科学]

 

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