癌变·畸变·突变 ›› 2015, Vol. 27 ›› Issue (6): 450-453,458.doi: 10.3969/j.issn.1004-616x.2015.06.009

• 论著 • 上一篇    下一篇

二溴乙腈对L5178Y细胞的遗传毒性及促凋亡作用

洪丽玲1, 王婷1, 范宾1, 周庆云1, 黄永焯2, 王峰3   

  1. 1. 上海化工研究院, 上海 200062;
    2. 中国科学院上海药物研究所, 上海 201203;
    3. 安利中国研发中心有限公司, 上海 201203
  • 收稿日期:2015-04-28 修回日期:2015-06-17 出版日期:2015-11-30 发布日期:2015-11-30
  • 作者简介:洪丽玲,E-mail:ujj_hong@163.com。

Genotoxicity and apoptosis in L5178Y cells induced by dibromo acetonitrile

HONG Liling1, WANG Ting1, FAN Bin1, ZHOU Qingyun1, HUANG Yongzhuo2, WANG Feng3   

  1. 1. Toxicology Laboratory, Testing Center of Shanghai Research Institute of Chemical Industry, Shanghai 200062;
    2. Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203;
    3. Amway Research & Development Center, Shanghai 201203, China
  • Received:2015-04-28 Revised:2015-06-17 Online:2015-11-30 Published:2015-11-30

摘要: 目的:研究饮用水中消毒副产物二溴乙腈对小鼠淋巴瘤L5178Y细胞的遗传毒性及促凋亡作用。方法:以L5178Y细胞为靶细胞,采用胞质分裂阻滞微核组学法(CBMN-cyt)和流式细胞术(FCM)分别检测不同浓度(0.1、1、5和10μmol/L)二溴乙腈对L5178Y细胞的遗传毒性及凋亡诱导作用。结果:与阴性对照比较,1和5μmol/L二溴乙腈染毒L5178Y细胞的微核率显著升高(P<0.05);1和10μmol/L二溴乙腈染毒L5178Y细胞的核质桥率显著升高(P<0.05);10μmol/L二溴乙腈染毒L5178Y细胞的核芽率升高(P<0.05);5和10μmol/L二溴乙腈染毒L5178Y细胞的核分裂指数率显著下降(P<0.05)。二溴乙腈各剂量组L5178Y细胞凋亡率均明显高于对照组,差异均具有统计学意义(P均<0.05)。结论:二溴乙腈可致L5178Y细胞遗传毒性并诱导其凋亡。

关键词: 二溴乙腈, 遗传毒性, 凋亡, 胞质分裂阻滞微核组学, 流式细胞术

Abstract: OBJECTIVE: To study the genotoxicity and apoptosis of the mice L5178Y lymphoma cells which was induced by disinfection by-product dibromo acetonitrile in drinking water. METHODS: Cytokinesis-block micronucleus cytome assay(CBMN-cyt) and flow cytometry were used to evaluate genotoxicity and apoptosis in mice L5178Y lymphoma cells treated with different concentrations of dibromo acetonitrile(0.1,1,5 and 10 mol/L). RESULTS: Compared wie negative control group,frequency of micronucleus(MN) of L5178Y lymphoma cells in 1 and 5μmol/L groups increased significantly(P<0.05). The nucleoplasmic bridges(NPBs) in the 1 and 10μmol/L treatment groups and the frequency of nuclear buds(NBUDs) in the 10μmol/L treatment group all increased significantly(P<0.05). However the nuclear divided index(NDI) in the 5 and 10μmol/L treatment groups all decreased significantly(P<0.05). Statistically significant increase of L5178Y lymphoma cell apoptosis were observed in all dibromo acetonitrile treatment groups in comparison to the negative control group(P<0.05). CONCLUSION: Disinfection by-product dibromo acetonitrile in drinking water could obviously induce genotoxicity and apoptosis in L5178Y lymphoma cells.

Key words: dibromo acetonitrile, genotoxicity, apoptosis, cytokinesis-block micronucleus cytome assays, flow cytometry

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