吉林大学学报(医学版) ›› 2023, Vol. 49 ›› Issue (3): 640-646.doi: 10.13481/j.1671-587X.20230312

• 基础研究 • 上一篇    下一篇

水消毒副产物卤代苯醌的结构与毒性分析

杜海英1(),姜永莉2,韦英惯1,3,李金华1,卢日峰1   

  1. 1.吉林大学公共卫生学院卫生毒理学教研室,吉林 长春 130021
    2.吉林国际旅行卫生保健中心长春海关口岸门诊部,吉林 长春 130062
    3.广西壮族自治区河池市疾病预防控制中心,广西 河池 547000
  • 收稿日期:2022-06-27 出版日期:2023-05-28 发布日期:2023-06-20
  • 通讯作者: 杜海英 E-mail:hydu@jlu.edu.cn
  • 作者简介:杜海英(1975-),女,山东省日照市人,副教授,医学博士,主要从事环境毒理学及毒理学安全性评价方面的研究。
  • 基金资助:
    吉林省科技厅科技发展计划项目(20200403029SF);中国疾病预防控制中心环境与人群健康重点实验室环境与健康相关产品安全所项目(2021-CKL-02)

Analysis on structure and toxicity of water disinfection by-products halobenzoquinones

Haiying DU1(),Yongli JIANG2,Yingguan WEI1,3,Jinhua LI1,Rifeng LU1   

  1. 1.Department of Health Toxicology,School of Public Health,Jilin University,Changchun 130021,China
    2.Changchun Customs Port Outpatient Department,Jilin International Travel Health Care Center,Changchun 130062,China
    3.Hechi Center for Disease Control and Prevention,Guangxi Zhuang Autonomous Region,Hechi 547000,China
  • Received:2022-06-27 Online:2023-05-28 Published:2023-06-20
  • Contact: Haiying DU E-mail:hydu@jlu.edu.cn

摘要:

目的 分析卤代苯醌(HBQs)对人肝癌HepG2细胞的半数抑制浓度(IC50)与结构参数间的定量构效关系,探讨可能影响HBQs细胞毒性的结构参数。 方法 体外培养HepG2细胞,采用不同浓度HBQs溶液作用细胞,同时设空白对照组[10%胎牛血清(FBS)+DMEM培养基]和阴性对照组[10% FBS+DMEM培养基+1.33% 甲醇(MeOH)]。MTS法和中性红摄取试验(NRU)法确定HBQs的作用浓度,采用MTS法和NRU法检测各组细胞存活率并计算HBQs对人肝癌HepG2细胞的IC50。采用量子化学计算模块MOPAC计算每种HBQs的结构参数。采用单因素线性回归分析方法,根据HBQs的IC50和HBQs结构参数构建定量结构-毒性关系(QSTR)模型。 结果 MTS法检测2,6-二氯-1,4-苯醌(2,6-DCBQ)的作用浓度为75、100、125、150、175、200、225和250 μmol·L-1,2,6-二氯-3-甲基-1,4-苯醌(DCMBQ)的作用浓度为175、200、225、250、275、300和325 μmol·L-1,2,3,6-三氯-1,4-苯醌(TCBQ)的作用浓度为200、225、250、275、300和325 μmol·L-1,2,5-二溴-1,4-苯醌(2,5-DBBQ)的作用浓度为75、100、125、150、175和200 μmol·L-1,2,6-二溴-1,4-苯醌(2,6-DBBQ)的作用浓度为200、225、250、275、300和325 μmol·L-1;NRU法检测,2,6-DCBQ的作用浓度为25、50、75、100和125 μmol·L-1,DCMBQ的作用浓度为125、150、175、200、225和250 μmol·L-1,TCBQ的作用浓度为175、200、225、250、275和300 μmol·L-1,2,5-DBBQ的作用浓度为75、100、125、150和175 μmol·L-1,2,6-DBBQ的作用浓度为125、150、175、200、225和250 μmol·L-1。各组HepG2 细胞存活率随HBQs浓度的升高明显降低,呈现明显剂量-反应关系。MTS法检测HBQs对HepG2细胞毒性作用为2,6-DCBQ>2,5-DBBQ>DCMBQ>TCBQ>2,6-DBBQ;NRU法检测HBQs对HepG2细胞毒性作用为2,6-DCBQ>2,5-DBBQ>DCMBQ>2,6-DBBQ>TCBQ。单因素多元线性回归分析,MTS法和NRU法检测HBQs 的IC50与HBQs结构参数间相关性分析比较差异均无统计学意义(P>0.05)。 结论 卤代原子的取代位置、种类和数量可影响HBQs的毒性作用,且呈现卤素取代个数越多其毒性越小的趋势。

关键词: 卤代苯醌, 细胞毒性, 结构参数, 定量结构-毒性关系

Abstract:

Objective To analyze the quantitative constitutive relationship between the median-inhibitory concentration (IC50) of halobenzoquinones (HBQs) to the human hepatocellular carcinoma HepG2 cells and structural parameters, and to explore the structural parameters that may affect the cytotoxicity of HBQs. Methods The HepG2 cells were cultured in vitro and cultured with different contentrations of HBQs solutions,at the same time, blank control group [10% fetal bovine serum(FBS)+DMEM culture medium] and negative control group [(10% FBS+DMEM culture medium +1.33% methanol (MeOH)] were set up. The action concentrations of HBQs were comfirmed with MTS and neural red uptake(NRU) methods,respectively.The survival rates of cells in various groups were detected by MTS and NRU methods, and the IC50 of HBQs was calculated. The quantum chemical calculation module MOPAC was used to calculate the structural parameters of every kind of HBQs. Single-factor linear regression analysis was used to construct the quantitative structure-toxicity relationship (QSTR) models based on the IC50 and structural parameters of the HBQs. Results The MTS method determination results showed that the action concentrations of 2,6-dichloro-1,4-benzoquinone(2,6-DCBQ) were 75, 100, 125, 150, 175, 200, 225, and 250 μmol·L-1,the action concentrations of 2,6-dichloro-3-methyl-1,4-benzoquinone(DCMBQ) were 175, 200, 225, 250, 275, 300,and 325 μmol·L-1, the action concentrations of 2,3,6-trichlorocyclohexa-1,4- benzoquinone(TCBQ) were 200, 225, 250, 275, 300, and 325 μmol·L-1, the action concentrations of 2,5-dibromo-1,4-benzoquinone(2,5-DBBQ) were 75, 100, 125, 150, 175, and 200 μmol·L-1,and the action concentrations of 2,6-dibromo-1,4-benzoquinone(2,6-DBBQ) were 200, 225, 250, 275, 300, 325 μmol·L-1.The NRU method determination results showed that the action concentrations of 2,6-DCBQ were 25, 50, 75, 100, and 125 μmol·L-1, the action concentrations of DCMBQ were 125, 150, 175, 200, 225,and 250 μmol·L-1, the action concentrations of TCBQ were 175, 200, 225, 250, 275,and 300 μmol·L-1,the action concentrations of 2,5-DBBQ were 75, 100, 125, 150,and 175 μmol·L-1,the action concentrations of 2,6-DBBQ were 125, 150,175, 200, 225, and 250 μmol·L-1.The survival rates of HepG2 cells in various groups were significantly decreased with the increase of HBQs concentration, showing a dose-response relationship. The cytotoxic effects of HBQs on the HepG2 cells detected by MTS method were 2,6-DCBQ>2,5-DBBQ>DCMBQ>TCBQ>2,6-DBBQ;and the cytotoxic effects of HBQs on HepG2 cells detected by NRU method were 2,6-DCBQ>2,5-DBBQ>DCMBQ>2,6-DBBQ>TCBQ.The single-factor multiple linear regression analysis results showed that the correlation analysis between IC50 and structural parameters of the HBQs detected by MTS and NRU methods had no statistically significant differences(P>0.05). Conclusion The substitution position, type and number of halogen atoms can affect the toxic effects of HBQs, and there is a trend that the more halogen substitution, the less toxic it is.

Key words: Halobenzoquinone, Cytotoxicity, Structural parameters, Quantitative structure-toxicity relationship

中图分类号: 

  • R114