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首页> 外文期刊>Cell biology international. >Disruption of tubulin polymerization and cell proliferation by 1-naphthylarsonic acid
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Disruption of tubulin polymerization and cell proliferation by 1-naphthylarsonic acid

机译:1-萘基磺酸破坏微管蛋白聚合和细胞增殖

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摘要

Arsenical compounds exhibit a differential toxicity to cancer cells. Microtubules are a primary target of a number of anticancer drugs, such as arsenical compounds. The interaction of 1-NAA (1-naphthylarsonic acid) has been investigated on microtubule polymerization under in vitro and cellular conditions. Microtubules were extracted from sheep brain. Transmission electron microscopy was used to show microtubule structure in the presence of 1-NAA. Computational docking method was applied for the discovery of ligand-binding sites on the microtubular proteins. Proliferation of HeLa cells and HF2 (human foreskin fibroblasts) was measured by the MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2Htetrazolium bromide] assay method following their incubation with 1-NAA. Fluorescence microscopic labelling was done with the help of a-tubulin monoclonal antibody and Tunel kit was used to investigate the apoptotic effects of 1-NAA on the HeLa cells. 1-NAA inhibits the tubulin polymerization by the formation of abnormal polymers having high affinity to the inner cell wall.
机译:砷化合物对癌细胞具有不同的毒性。微管是许多抗癌药物(例如砷化合物)的主要靶标。 1-NAA(1-萘基磺酸)的相互作用已在体外和细胞条件下的微管聚合研究。从绵羊脑中提取微管。透射电子显微镜用于显示1-NAA存在下的微管结构。应用计算机对接方法发现微管蛋白上的配体结合位点。将HeLa细胞和HF2(人包皮成纤维细胞)的增殖通过与1-NAA孵育后的MTT [3-(4,5-二甲基噻唑-2-基)-2,5-二苯基-2四溴化四唑]测定方法进行测量。借助α-微管蛋白单克隆抗体进行荧光显微镜标记,并使用Tunel试剂盒研究1-NAA对HeLa细胞的凋亡作用。 1-NAA通过形成对细胞内壁具有高亲和力的异常聚合物来抑制微管蛋白聚合。

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