癌变·畸变·突变 ›› 2017, Vol. 29 ›› Issue (5): 383-386.doi: 10.3969/j.issn.1004-616x.2017.05.012

• 论著 • 上一篇    下一篇

苯并芘诱导肝脏的炎症损伤及EGFR的表达变化

邓燕霞1,2, 古盼1, 刘海龙2, 郑凯2, 刘建军2, 黄新凤2, 李习艺1, 黄海燕2   

  1. 1. 广西医科大学公共卫生学院, 广西 南宁 530021;
    2. 深圳市疾病预防控制中心现代毒理学重点实验室, 广东 深圳 518055
  • 收稿日期:2016-11-29 修回日期:2017-04-20 出版日期:2017-09-30 发布日期:2017-09-30
  • 通讯作者: 李习艺,E-mail:leeciyee@163.com;黄海燕,E-mail:hhy424@126.com E-mail:leeciyee@163.com;hhy424@126.com
  • 作者简介:邓燕霞,E-mail:18670094090@163.com。
  • 基金资助:
    国家自然科学基金(81370080,81001261);深圳市未来产业专项资金(ZDSYS20140509101335476)

Expression of EGFR in benzopyrene-induced hepatic inflammation

DENG Yanxia1,2, GU Pan1, LIU Hailong2, ZHENG Kai2, LIU Jianjun2, HUANG Xinfeng2, LI Xiyi1, HUANG Haiyan2   

  1. 1. School of Public Health, Guangxi Medical University, Nanning 530021, Guangxi;
    2. Key Laboratory of Modern Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, Guangdong, China
  • Received:2016-11-29 Revised:2017-04-20 Online:2017-09-30 Published:2017-09-30

摘要: 目的:探讨苯并芘(BaP)长期暴露对大鼠肝脏的炎症损伤及表皮生长因子受体(EGFR)的表达变化。方法:选择6周龄雌性SPF级SD大鼠36只,将其随机分为染毒组和对照组,每组18只,染毒组胸腔注射10 mg/mL的玉米油-苯并芘0.2 mL,对照组注射0.2 mL玉米油,每2周注射1次,共4次,连续观察1年,期间记录大鼠的生存状况和体质量变化,实验结束时收集大鼠肝脏组织,利用HE染色进行病理分析,同时采用免疫组化、免疫荧光和Western blot检测肝脏组织中EGFR蛋白的表达变化。结果:与对照组比较,染毒组实验期间大鼠体质量和生长未见明显异常;病理分析发现BaP作用后的大鼠肝脏出现了明显的碎片状坏死和炎性浸润;免疫组化、免疫荧光结果均显示染毒组大鼠肝脏内EGFR表达增强;Western blot检测发现,染毒组EGFR蛋白表达水平(0.915±0.253)较对照组(0.452±0.095)明显升高(P < 0.05)。结论:BaP诱导肝脏炎症的同时可激活EGFR高表达,推测BaP诱发的炎症与EGFR的表达密切相关。

关键词: 苯并芘, 肝损伤, 炎症, 表皮生长因子受体

Abstract: OBJECTIVE: To investigate the effect of long-term benzopyrene (BaP) exposure on expression of epithelial growth factor receptor(EGFR) in SD rat liver. METHODS: 36 healthy SD female rats were randomly divided into exposure and control groups with 18 rats per group. Rats in the exposure groups were injected with 0.2 mL of 10 mg/mL corn-benzopyrene through chest punctured,once per 2 weeks for 2 months. Rats in the control group were injected with 0.2 mL corn oil. All rats were observed the survival status and body mass changes for one year. Immunohistochemical,immunofluorescence and Western blot assays were used to detect expression of EGFR protein in livers and HE staining for pathological effects. RESULTS: HE staining showed significant fragmentation necrosis and inflammatory infiltration after benzopyrene exposure. Immunohistochemistry and immunofluorescence showed that expression of EGFR in the liver of the exposure group was significantly higher than that of the control group. Based on Western blot results (0.452±0.095,0.915±0.253), expression level of EGFR protein in the exposed group was significantly higher than that in the control group (P < 0.05). CONCLUSION: BaP induced hepatic inflammation and EGFR overexpression,suggesting that the two effects were closely related.

Key words: benzopyrene, liver injury, inflammation, epithelial growth factor receptor

中图分类号: