肺癌患者外周血T淋巴细胞及亚群CD28表达和活化的改变

Changes of the expression of CD28+ and activation of various population of T cell in peripheral blood from lung cancer patients

目的 :检测共刺激分子CD2 8在肺癌患者外周血T淋巴细胞及亚群中的表达密度和细胞活化程度的变化 ,并探讨该变化与肺癌临床分期的关系。方法 :用三色荧光直标流式细胞法分别检测 3 8例正常人与 4 2例肺癌患者中血T淋巴细胞亚群中CD2 8的阳性率以及CD2 8+T淋巴细胞亚群活化率。结果 :与正常人相比 ,肺癌患者外周血中的CD3 +CD2 8+ ,CD4 +CD2 8+ ,CD8+CD2 8+淋巴细胞百分比均有下降 (P <0 0 5 )。淋巴细胞及其T亚群中的CD2 5 +CD2 8+ ,CD3 8+CD2 8+淋巴细胞百分比亦有所下降 ( P <0 0 5 ) ,但在不同临床分期的患者之间无显著性差异 ( P >0 0 5 )。结论 :肺癌患者外周血T淋巴细胞的CD2 8表达密度及CD2 8+T细胞的活性均有降低 ,但下降幅度与临床分期无关。

Objective:To investigate the changes of expression of CD28 on T cells and activation of various population of T cells in peripheral blood of lung cancer patients and to study the relations of these changes with clinical stages.Methods:Three color immunofluorence staining and flow cytometry was used to detect the expression of CD28 on various population of T cells and the activation of CD28+ T cells in peripheral blood both of 38 normal persons and 42 patients with lung cancer.Results:Comparing blood of lung cancer patients were remarkably decreased(P<0 05).However there was no significant difference between different clinical stages.Conclusion:The expression of CD28 and the activation of T cells was decreased in peripheral blood of lung cancer patients,which showed no obvious relations with the clinical stages.