宫颈癌患者Th1／Th2细胞因子表达水平的研究

  目的 检测宫颈癌患者外周血CD+4 T细胞分泌细胞因子的水平变化，分析Th1和Th2细胞的细胞因子免疫活动，为肿瘤的免疫治疗提供实验依据。方法 用刺激物刺激细胞，增加细胞内细胞因子的表达，再加入荧光标记的特异性抗细胞因子单克隆抗体，特异性抗原抗体结合，以流式细胞仪分析特异性细胞因子表达水平。结果 宫颈癌患者Th1型细胞因子白细胞介素-2（IL-2）表达水平较正常对照组降低，差异有统计学意义，而Th1 型细胞因子干扰素-γ（IFN-γ）表达水平较正常对照组差异无统计学意义。Th2型细胞因子白细胞介素-4（IL-4）、白细胞介素-6（IL-6）、白细胞介素-10（IL-10）表达水平较正常对照组显著升高，差异有显著性意义。结论 宫颈癌患者Th1型反应模式处于弱势状态，Th2型反应模式处于优势状态，Th1／Th2平衡失调，Th1／Th2平衡向Th2方向漂移，这可能是肿瘤细胞发生免疫逃逸，从而导致肿瘤的发生或者转移的原因之一。

Investigation in the levels of Th1 and Th2 type cytokines in patients with cervical cancer

Objective To detect the levels of Th1 and Th2 type cytokines of peripheral blood CD+4 T lymphocytes in the patients with cervical cancer in order to find out the laboratory evidence of tumor im－munotherapy. Methods The peripheral blood lymphocytes were stimulated by stimulator in order to enhance expression of cytokines. Then specific fluorochrome-conjugated monoclonal antibody was added to be com－bined with its specific antigen. Results The level of IL-2 produced by Th1 cells were lower in patients of cervical cancer than those of normal controls, there were significant difference between them. But the level of IFN-γ produced by Th1 cells had no significant change in patients of cervical cancer in comparison with normal controls. The levels of Th2 type cytokines such as interleukin-4(IL-4), interleukin-6(IL-6), inter－leukin-10(IL-10) were higher in patients of cervical cancer than those of normal controls, there were signifi－cant difference between them. Conclusion Th1/Th2 is imbalance in cervical cancer .Th1 type cytokines are inhibited, and Th2 type cytokines are relatively enhanced, so Th1/Th2 shifts to Th2. It may be the mechanism of tumor arising and transferring by immune escape from immunosurveillance.