牛磺酸对缺氧所致神经胶质细胞凋亡的抑制作用  

Taurine inhibited the apoptosis of glial cells induced by hypoxia

作　　者：王琴[1] 黄慧玲[2] 黄振武[1] 

机构地区：[1]中国疾病预防控制中心营养与健康所,北京100050 [2]天津市环湖医院神经外科研究所

出　　处：《卫生研究》2015年第2期284-287,共4页Journal of Hygiene Research

基　　金：国家自然科学基金青年科学基金(No.31201352)

摘　　要：目的探讨牛磺酸对缺氧引起的神经胶质细胞凋亡的抑制作用方法原代培养神经胶质细胞并制作细胞缺氧模型,实验分为空白对照组、缺氧模型组、缺氧+牛磺酸组。细胞缺氧6 h后加入牛磺酸3 mmol/L继续培养24 h和48 h。采用Annexin V-FITC/PI双染色流式细胞术检测细胞凋亡率,RT-PCR检测凋亡相关基因表达水平。结果缺氧组48 h早期凋亡率为(2.48±0.92)%,中晚期凋亡率为(2.97±0.75)%,均显著高于对照组的(1.02±0.44)%(P<0.05);牛磺酸48 h组早期凋亡率为(1.39±1.03)%,中晚期凋亡率为(1.62±0.1)%,均显著低于缺氧组(P<0.05)。缺氧组Bax mRNA相对表达量均显著高于对照组和牛磺酸组(P<0.01);牛磺酸48 h组Bcl-2 mRNA相对表达量比缺氧组升高2倍(P<0.01);牛磺酸组HIF-1αmRNA表达量均比缺氧组升高显著(P<0.01)。结论牛磺酸有助于抑制缺氧所致的神经胶质细胞早期和中晚期凋亡率。Objective To study the anti-apoptosis effect of taurine on hypoxic glial cells. Methods The glial cells were primarily cultured and divided into three groups,the control group,hypoxia group,and hypoxia ＋ taurine group. The hypoxia model was established by putting cells in a tank filled with oxygen-free mixed gas（ 95% N2,5%CO2） with oxygen concentration less than 1%. When the hypoxia time（ 6 hours） was finished,taurine（ 3 mmol / L） was added to incubate for hypoxia ＋ taurine group. Finally,the glial cells of all groups were collected for FCM and RT-PCR tests after 24 and 48 hours,respectively. Results The earlier apoptosis rate was（ 2. 48 ± 0. 92） %,the middle-late apoptosis rate was（ 2. 97 ± 0. 75） % for 48 h hypoxia group, they were significantly higher than the control group（ 1. 02 ± 0. 44） %（ P 〈0. 05）. The earlier apoptosis rate（ 1. 39 ± 1. 03） % and middle-late apoptosis rate（ 1. 62 ± 0. 1） % for 48 h taurine group were significantly lower than the hypoxia group（ P 〈0. 05）. The relative expression level of Bax mRNA for hypoxia group increased by five times higher than the control group,and two times than the hypoxia ＋ taurine group（ P〈 0. 05）,and that of Bcl-2 mRNA for 48 h hypoxia ＋ taurine group was two times higher than the hypoxia group（ P 0. 01）. The relative expression levels of HIF-1α mRNA for 24 h and 48 h hypoxia ＋taurine groups were significantly higher than the hypoxia group（ P 0. 01）. Conclusion Taurine could obviously inhibited the apoptosis of glial cells induced by hypoxia.

关 键 词：牛磺酸 神经胶质细胞 缺氧 凋亡 

分 类 号：Q593.2[生物学—生物化学] Q517