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小鼠骨髓干细胞体外诱导成熟的树突状细胞对T细胞增殖的影响

陈玉丙1,张红梅2,刘林林3,范洪学1*   

  1. 1.吉林大学公共卫生学院毒理学教研室,吉林 长春130021; 2.中山大学医学院病原学教研室,广东 广州510089;3.吉林大学第二医院放疗科,吉林 长春130041
  • 收稿日期:2003-12-30 修回日期:1900-01-01 出版日期:2004-05-28 发布日期:2004-05-28
  • 通讯作者: 范洪学

Effects of mature dendritic cells derived from mousebone marrow on T cells proliferation in vitro

CHEN Yu-bing1, ZHANG Hong-mei2, LIU Lin-lin3, FAN Hong-xue1*   

  1. 1. Department of Toxicology,School of Public Health,Jilin University,Changchun 130021,China;2. Department of Etiology, College of Medical Sciences, Zhongshan University, Guangzhou 510089,China;3. Department of Radiotherapy, Second Hospital,Jilin University,Changchun 130041,China
  • Received:2003-12-30 Revised:1900-01-01 Online:2004-05-28 Published:2004-05-28
  • Contact: FAN Hong-xue

摘要: 目的:研究小鼠骨髓干细胞体外诱导分化的树突状细胞对T细胞增殖的影响,为进一步研究树突状细胞的功能及临床肿瘤的治疗提供有效的实验方法。 方法:应用IL-4和GM-CSF培养小鼠骨髓细胞5~7 d,光镜下观察细胞形态学变化;培养至第5~6天,加入黑色素瘤(B16)冻融抗原继续培养1~2 d,流式细胞仪检测细胞表面分子CD83、CD86,并与同种异体T细胞混合培养72 h,终止培养前16 h加入3H-TdR(18.5 kBq/孔),γ-液体闪烁仪测定cpm值。 结果:用IL-4和GM-CSF培养3 d可见细胞形态发生改变,细胞形状不规则,培养5~6 d时,有刺状突起、拉长,为典型树突状细胞形态学特征;抗原装载后流式细胞仪检测CD83、CD86表达,IL-4+GM-CSF+TNF-α组(61.68%、71.25%)及IL-4+GM-CSF+冻融抗原组(63.11%、76.88%)明显高于对照组(2.41%、3.88%)及单纯IL-4+GM-CSF培养组(21.86%、28.69%)(P<0.001),IL-4+GM-CSF+TNF-α组与IL-4+GM-CSF+冻融抗原组比较,CD83和CD86表达差异无显著性;液闪仪检测结果显示,IL-4+GM-CSF+冻融抗原组刺激T细胞增殖的能力明显强于其他组,且差异具有显著性(P<0.001, P<0.05)。 结论:小鼠骨髓细胞体外培养成功地诱导扩增出足量树突状细胞,经肿瘤抗原刺激后绝大部分成熟,并能够刺激同种异体T细胞大量增殖,参与免疫应答。

关键词: 抗原, T淋巴细胞, 细胞周期

Abstract: Objective To study the effects of mature dendritic cells (DCs) derived from mouse bone marrow on T cell proliferation in vitro, and provide techinological methods for tumor therapy. Methods With IL-4 and GM-CSF, the cells from mouse bone marrow were cultured for 5-7 days. The morphological changes were observed under light microscope on 3rd and 5th day after culture; immature DCs on 5th or 6th day after culture were loaded with tumor-antigen for 1-2 days; CD83 and CD86 were tested by flowcytometric analysis; T-cell-stimulatory activity in DCs derived from mouse bone marrow and loaded with tumor-antigen was analysed by γ- scintillomete. Results Morphological changes were found and dendritic protrusion appeared on 3rd day after culture; dendritic protrusion prolonged on 5th day after culture; flow-cytometric analysis showed that expressions of CD83 and CD86 of IL-4+GM-CSF+TNFα group (61.68% and 71.25%) and IL-4+GM-CSF+tumor-antigen group (63.1% and 76.88%) had significant differences compared with control group (2.41% and 3.88%) and IL-4+GM-CSF group (21.86% and 28.69%) (P<0.001), and IL-4+GM-CSF+tumor-antigen group had also significant difference compared with IL-4+GM-CSF+TNFα group(P<0.01); proliferation of T cells in IL-4+GM-CSF+tumor-antigen group strongly enhanced compared with other groups (P<0.001,P<0.05). Conclusion Sufficient DCs generated from bone marrow cells are induced in vitro and strongly stimulate proliferation of T cells after tumor antigen are loaded.

Key words: T-lymphocytes, antigens, cell cycle

中图分类号: 

  • R73-36