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中国临床药理学与治疗学 ›› 2011, Vol. 16 ›› Issue (11): 1210-1215.

• 基础研究 • 上一篇    下一篇

热疗增强盐酸吉西他滨对人肺癌细胞株PLA-801D增殖抑制作用的实验研究

孙胜杰, 吴志勇, 焦顺昌   

  1. 中国人民解放军总医院肿瘤内科,北京 100853
  • 收稿日期:2011-09-01 修回日期:2011-11-02 出版日期:2011-11-26 发布日期:2011-11-29
  • 通讯作者: 焦顺昌,男,主任医师,博士生导师,研究方向:肿瘤免疫及综合治疗。Tel: 010-66937878 E-mail: jiaosc@vip.sina.com
  • 作者简介:孙胜杰,男,硕士研究生,医师,研究方向:肿瘤的化疗增敏。Tel: 13810228740 E-mail: sunsj301@yahoo.com.cn

Experimental study of enhanced cytotoxicity of Gemcitabine to human pulmonary carcinoma PLA-801D cells by hyperthermia

SUN Sheng-jie, WU Zhi-yong, JIAO Shun-chang   

  1. Department of Medical Oncology, PLA General Hospital, Beijing 100853, China
  • Received:2011-09-01 Revised:2011-11-02 Online:2011-11-26 Published:2011-11-29

摘要: 目的: 探讨不同温度下的温热对化疗药盐酸吉西他滨增敏的规律及机制。方法: 应用四氮唑蓝(MTT)快速比色法测定不同温度下的热疗组、单纯化疗组以及以不同序贯方式结合的热化疗组对人肺巨细胞癌细胞(PLA-801D)的生长抑制率;流式细胞仪测定42℃温热条件下各组细胞周期的变化。结果: (1)38~41 ℃ 的单纯热疗促进了肺癌细胞的生长(P<0.01);42~43 ℃ 的单纯热疗对肺癌细胞有抑制和杀伤作用(P<0.01);⑵温热与药物同时作用效果最佳(P<0.001),且抑制率与温度的变化呈正相关(r=0.9683, P=0.0001);⑶细胞周期分析发现热化同时组细胞各个周期增减的幅度最大。结论: 临床热疗不宜单独进行,需与化疗同时联合应用;一定范围内,温度越高热化疗的疗效越好。

关键词: 热疗, 盐酸吉西他滨, 人肺癌PLA-801D细胞株, 细胞周期, 化疗增敏

Abstract: AIM: To investigate the sensitivity of hyperthermia at different temperatures to Gemcitabine and its mechanism.METHODS: Growth inhibiting rates of human pulmonary giant cell carcinoma cells (PLA-801D) in simple thermotherapy group, simple chemotherapy group, combined thermotherapy and chemotherapy group were determined by MTT colorimetric assay. Changes in cell cycle after treatment with hyperthermia at 42 ℃ and Gemcitabine were analyzed by flow cytometry (FCM).RESULTS: Hyperthermia at 42-43 ℃ suppressed the proliferation of PLA-801D cells (P<0.01). However, hyperthermia at 38-41 ℃ stimulated the proliferation of pulmonary carcinoma cells (P<0.01). Hyperthermia in combination with drugs could achieve best results, and the inhibitory rate was positively correlated with the change of temperature (r=0.9683, P=0.0001). Cell cycle analysis showed that the amplitude of cell cycles changed greatly after combined thermotherapy and chemotherapy.CONCLUSION: Simple hyperthermia should be applied in combination with chemotherapy. The higher the temperature of hyperthermia is, the better the effect of hyperthermia is, in the controlled range.

Key words: Hyperthermia, Gemcitabine, Human pulmonary carcinoma PLA-801D cell line, Cell cycle, Chemosensitization

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