目的探讨CD4、IL-17和Foxp3在非小细胞肺癌(NSCLC)中的表达及其与微血管密度(MVD)的关系。方法应用免疫组化法检测102例NSCLC组织和癌旁组织中CD4、IL-17、Foxp3、CD31和CD34的表达。计数资料采用r检验,计量资料采用单因素方差分析。结果NSCLC组织中,CD4、IL-17和Foxp3在不同pTNM分期中的表达强度差异有统计学意义(P〈0.05)。其中IL-17和Foxp3在Ⅰ、Ⅱ、Ⅲ期NSCLC组织中的阳性表达率分别为54.8%(23/42)、77.8%(21/27)、84.8%(28/33)和71.4%(30/42)、92.6%(25/27)、93.9%(31/33),随pTNM分期提高表达逐渐增高。CD4在Ⅰ、Ⅱ、Ⅲ期NSCLC组织中的阳性表达率分别为85.7%(36/42)、81.5%(22/27)和54.5%(18/33),随pTNM分期提高表达逐渐下降。在影响CD31表达的因素中,CD4、IL-17、Foxp3在NSCLC组织中的强阳性表达(++)与阴性(-)、阳性表达(+)比较,差异有统计学意义(P〈0.05),CD31在Ⅰ期和Ⅲ期NSCLC中的表达差异有统计学意义(P〈0.05)。在影响CD34表达的因素中,IL.17在NSCLC组织中的阳性表达(+)与强阳性表达(++)比较,差异有统计学意义(P〈0.05);Foxp3阴性(-)与强阳性表达(++)比较,差异有统计学意义(P〈0.05);CD34在Ⅰ期和Ⅲ期、Ⅱ期和Ⅲ期NSCLC中的表达差异有统计学意义(P〈0.05)。结论CIM、IL-17、Foxp3可能参与肿瘤产生的宿主免疫抑制反应及其发展,与NSCLC的浸润和转移相关。
Objective To explore the expression of CD4^ + , IL-17 and Foxp3 in non-small cell lung cancer (NSCLC) and their relationship with microvessel density (MVD). Methods The expressions of CD4^+, IL-17, Foxp3, CD31 and CD34 in the cancer tissues of 102 NSCLC cases were detected by immunohistochemisty. The relationship among the expressions of CD4^+, IL-17, Foxp3 and MVD was analyzed. The count data were analyzed using X2 test. The measurement data were analyzed using singlefactor analysis of variance, and significance level α = 0.05. Results Among the factors affecting CD31 expression, there was a statistically significant difference between the strong positive Foxp3 expression ( + +) and negative ( - ) and positive expressions ( + ) in the NSCLC cancer tissues ( P 〈 0.05 ) , and between the expressions in stage [ and Ill cancer tissues ( P 〈 0.05 ). Among the factors affecting CD34 expression, there was a significant difference between positive IL-7 expression ( + ) and strong positive IL-7 expression ( + + ) (P 〈 0. 05 ), between negative Foxp3 expression ( - ) and strong positive Foxp3 expression ( + +)(P 〈0.05), and between the CD34 expressions in stage Ⅰ and Ⅲ and between those in stage l~ and HI NSCLC cancer tissues (P 〈 0.05). Conclusions CD4, IL-17and Foxp3 may be involved in the tumor suppression caused by host immune response, and are related with the NSCLC invasion and metastasis.