J Photochem Photobiol B:中国仓鼠V79细胞对光活化的α-三噻吩的光敏化涉及膜损伤和氧化应激

2018-07-01 MedSci MedSci原创

本研究中,研究人员测试V79中国仓鼠肺成纤维细胞的光敏作用以研究细胞是否能够适应α-三联噻吩,从而评估其安全性。使用15分钟的黑光(320-400nm,40W)照射,结果显示,α-三烯基可明显光活化,并引起V79细胞收缩、分离和坏死。光活化的α-三噻吩呈浓度依赖性应激,降低细胞存活并诱导细胞死亡,中位抑制浓度(IC50)为4.78μg/ml。在10.0μg/ml光活化的α-三噻吩的处理中,MTT测

本研究中,研究人员测试V79中国仓鼠肺成纤维细胞的光敏作用以研究细胞是否能够适应α-三联噻吩,从而评估其安全性。

使用15分钟的黑光(320-400nm,40W)照射,结果显示,α-三烯基可明显光活化,并引起V79细胞收缩、分离和坏死。光活化的α-三噻吩呈浓度依赖性应激,降低细胞存活并诱导细胞死亡,中位抑制浓度(IC50)为4.78μg/ml。在10.0μg/ml光活化的α-三噻吩的处理中,MTT测定显示细胞活力也下降至对照的10.58%。随着照射时间的延长和光敏化α-三烯基浓度的增加,细胞死亡率显著增加,细胞内活性氧(ROS)含量和细胞外丙二醛含量也逐渐增加。V79细胞中过氧化物酶、超氧化物歧化酶和过氧化氢酶活性的变化对光敏化α-三烯基氧化应激反应呈正向作用。此外,使用非光敏化条件,>7.0μg/ml的α-三噻吩处理,可增加细胞死亡和氧化应激。

结果显示,V79细胞对膜损伤和细胞死亡失调反应,清楚地表明动物细胞对α-叔丁基光活化细胞毒性作用的光敏作用。

原始出处:


Luan S, Muhayimana S, et al., Photosensitization of Chinese hamster V79 cells to photoactivated alpha-terthienyl involving membrane damage and oxidative stress. J Photochem Photobiol B. 2018 Jun 21;185:192-198. doi: 10.1016/j.jphotobiol.2018.06.012.

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    2019-02-09 sunylz
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    2019-05-09 liuxiaona
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