癌变·畸变·突变 ›› 2002, Vol. 14 ›› Issue (1): 15-018.doi: 10.3969/j.issn.1004-616x.2002.01.005

• 论著 • 上一篇    下一篇

结晶型NiS 诱发人支气管上皮细胞系恶性转化

纪卫东;吴中亮;陈家kun   

  1. 广州医学院化学致癌研究所,广东 广州 510182
  • 收稿日期:2001-04-18 修回日期:2001-06-28 出版日期:2002-01-30 发布日期:2002-01-30
  • 通讯作者: 纪卫东

MALIGNANT TRANSFORMATION OF HUMAN BRONCHIAL EPITHELIAL CELL LINE INDUCED BY CRYSTALLINK NICKEL SULFIDE

JI Wei-dong; WU Zhong-liang; CHEN Jia-kun   

  1. Institute for Chemical Carcinogenesis of Guangzhou Medical college, Guangzhou 510182, China
  • Received:2001-04-18 Revised:2001-06-28 Online:2002-01-30 Published:2002-01-30
  • Contact: JI Wei-dong

摘要: 目的:研究结晶型硫化镍(NiS) 诱发SV40 Large T抗原永生化的人支气管上皮细胞系(16HBE) 恶性转化作用。方法:体外用不同浓度结晶型NiS 多次处理16HBE 细胞,软琼脂集落形成和裸鼠成瘤试验鉴定转化细胞的恶性度。结果:细胞培养至35 代,发现NiS 可诱导16HBE 恶性转化。转化细胞排列紊乱,重叠生长,在软琼脂中的集落形成率显著高于对照组( P < 0. 01) ,并呈时间剂量依赖关系;转化细胞在裸鼠体内成瘤,组织学证实为低分化鳞状细胞癌。结论:结晶型NiS 有较强的诱导人支气管上皮细胞恶性转化能力;该转化模型为镍致癌机制的分子水平研究提供了理想的研究系统。

关键词: 结晶型硫化镍, 人支气管上皮细胞, 恶性转化

Abstract: Purpose : To study the malignant transforming activity of crystalline nickel sulfide (NiS) in human bronchial epithelial cell line (16HBE) immortalized by SV40 Large T antigen. Methods : 16HBE cells were treated several times with NiS at different concentrations in vitro , and the malignant degree of transformed cells were identified by the assay for anchorage2independent growth and tumorigenicity. Results : The 35th passage cells exhibited overlapping growth. As compared with that of negative control cells , colony formation efficiency of the transformed cells in soft agar showed significant increases ( P < 0. 01) , and a dose-dependent effect . The transformed cells could grow into tumor in nude mice , a squamous cell carcinoma confirmed by histopathological examination. Conclusion : Crystalline nickel sulfide can induce malignant transformation of 16HBE cells. This transformed model provides a potential tool for the study on molecular mechanism of nickel carcinogenesis.

Key words: crystalline nickel sulfide, human bronchial epithelial cell line, malignant transformation

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