华西口腔医学杂志

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酸性微环境对单核/巨噬细胞分泌血管内皮细胞生长因子及Tca8113细胞杀伤作用的影响

宋宇峰 冯红超 唐路 彭江帆 马洪   

  1. 贵阳医学院口腔医学系, 贵州贵阳550004
  • 收稿日期:2010-08-25 修回日期:2010-08-25 出版日期:2010-08-20 发布日期:2010-08-20
  • 通讯作者: 冯红超,Tel:0851-6773504
  • 作者简介: 宋宇峰(1962—),男,贵州人,教授,博士
  • 基金资助:

    国家自然科学基金资助项目(30660200);贵州省优秀科技教育人才省长专项基金资助项目[(2005)160号]

Experimental study on the anti-tumor effect of monocytes/macrophages against Tca8113 cells and the secretion of vascular endothelial growth factor in acid microenvironment

SONG Yu-feng, FENG Hong-chao, TANG Lu, PENG Jiang-fan, MA Hong   

  1. Dept. of Stomatology, Guiyang Medical College, Guiyang 550004, China
  • Received:2010-08-25 Revised:2010-08-25 Online:2010-08-20 Published:2010-08-20
  • Contact: FENG Hong-chao,Tel:0851-6773504

摘要:

目的通过酸性微环境下单核/巨噬细胞分泌血管内皮细胞生长因子(VEGF)及对舌癌细胞株Tca8113杀伤作用的研究,探讨肿瘤内浸润的单核/巨噬细胞在酸性微环境影响下的功能状态。方法从健康人的外周血中分离单核细胞并通过培养将其转化为单核/巨噬细胞,分别调整培养液的pH值为酸性:6.6、6.8;常规环境:pH值为7.2,将单核/巨噬细胞和舌癌细胞株Tca8113进行混合培养,MTT法检测单核/巨噬细胞对舌癌细胞的杀伤作用;采用ELISA法检测不同微环境下单核/巨噬细胞VEGF的分泌情况。结果在酸性微环境下,单核/巨噬细胞对舌癌细胞株的杀伤作用低于常规环境下(P<0.05);而分泌VEGF的能力较常规环境下增强(P<0.05)。结论可能正是肿瘤组织局部的酸性微环境改变了单核/巨噬细胞的功能,更多的参与了肿瘤的生长,但其在肿瘤中的具体机制及如何调节单核/巨噬细胞在肿瘤组织中的功能还需进一步的研究。

关键词: 单核/巨噬细胞, 舌鳞状细胞癌, 酸性, 血管内皮细胞生长因子

Abstract:

Objective To investigate the anti-tumor effect of monocytes/macrophages against Tca8113 cells and the secretion of vascular endothelial growth factor(VEGF) in acid microenvironment in vitro. Methods Peripheral blood mononuclear cells were extracted from healthy person′ s blood and cultivated to transform into monocytes/ macrophages. The monocytes/macrophages were cultured with Tca8113 in acid microenvironment(pH6.6 and pH6.8) and in normal microenvironment(pH7.2). The anti-tumor effect of monocytes/macrophages against Tca8113 cells were examined by MTT assay. The expression of VEGF was detected by enzyme-link immunoassay(ELISA). Results The anti -tumor effect of monocytes/macrophages against Tca8113 cells in acid environment was lower than in normal environment(P<0.05). VEGF excreted by mononuclear/macrophage was significantly higher in acid microenvironment than in normal microenvironment. Conclusion Due to acid microenvironment inside tumor, the anti-tumor effect of monocytes/macrophages against tumor cell was decreased, but the secretion of VEGF was gradually increased. However, the function of monocytes/macrophages on anti-tumor need more research.

Key words: monocytes/mcrophages, tongue squamous cell carcinoma, acid, vascular endothelial growth factor