目的:通过检测梅毒血清固定患者外周血CD4^+CD25^+调节性T细胞(regulatory T ceIls,Treg)比例和功能的改变,探讨Treg在梅毒血清固定现象形成中的作用。方法:收集梅毒血清固定患者26例,正常对照23例,利用流式细胞术分别检测外周血Treg比...目的:通过检测梅毒血清固定患者外周血CD4^+CD25^+调节性T细胞(regulatory T ceIls,Treg)比例和功能的改变,探讨Treg在梅毒血清固定现象形成中的作用。方法:收集梅毒血清固定患者26例,正常对照23例,利用流式细胞术分别检测外周血Treg比例及Treg内Foxp3、细胞毒性T淋巴细胞抗原(CTLA)-4及白介素(IL)-10的定量表达情况。结果:梅毒血清固定组患者外周血Treg比例明显高于正常对照组(P<0.01);且Treg内转录因子Foxp3及功能性分子CTLA-4和IL-10的表达量也明显高于正常对照组(P<0.05或P<0.01)。结论:梅毒血清固定患者外周血Treg比例和功能的异常,可能是导致该现象形成的重要原因之一。展开更多
目的探讨Treg及Th1/Th2类细胞因子在晚期肺癌肿瘤免疫抑制中的作用。方法选取100例初治晚期肺癌患者及50例健康自愿者。采用流式细胞术检测其外周血中Treg、Th1类细胞因子(IFN-γ、IL-2、TNF-a)、Th2类细胞因子(IL-4、IL-6、IL-10)水平...目的探讨Treg及Th1/Th2类细胞因子在晚期肺癌肿瘤免疫抑制中的作用。方法选取100例初治晚期肺癌患者及50例健康自愿者。采用流式细胞术检测其外周血中Treg、Th1类细胞因子(IFN-γ、IL-2、TNF-a)、Th2类细胞因子(IL-4、IL-6、IL-10)水平,同时分析CD4^+CD25^+Treg与Th1/Th2类细胞因子之间的相关性。结果 (1)晚期肺癌患者外周血中Treg为(11.12±5.83)%,高于健康对照组(7.46±3.07)%,差异有统计学意义(P=0.003);(2)化疗前肺癌患者外周血中Treg为(11.12±5.83)%,明显高于化疗后(6.45±3.74)%,差异有统计学意义(P<0.001);(3)晚期肺癌患者与正常对照组Th1/Th2类细胞因子水平分别为:IFN-γ(8.56±3.62 vs 10.79±3.27,P=0.049)、IL-2(8.48±2.87 vs10.22±4.03,P=0.03)、TNF-a(6.18±2.67vs8.14±2.87,P=0.007)、IFN-γ/IL-4(3.33±1.44 vs 4.09±1.00,P=0.028)、IL-4(3.17±1.19 vs 2.45±0.43,P<0.001)、IL-6(3.88±2.08 vs 2.33±0.88,P<0.001)、IL-10(3.64±1.73 vs2.54±1.08,P=0.008),其中Th2类因子水平明显升高,差异有统计学意义(P均<0.05);(4)CD4^+CD25^+Treg与Th1类细胞因子IFN-γ、TNF-a、IL-2及IL-6无相关性(P均>0.05);与Th1/Th2(γ=-0.273,P=0.003)呈负相关;与Th2类细胞因子IL-4(γ=0.237,P=0.009)、IL-10(0.626,P<0.001)呈正相关(P均<0.05)。结论晚期肺癌患者CD4^+CD25^+Treg、Th2类细胞因子水平显著升高,Th1类细胞因子水平下降,它们共同导致肿瘤患者免疫抑制及肿瘤进展,监测其水平变化有助于判断肺癌患者疗效、预后,有效调控CD4^+CD25^+Treg及负性细胞因子水平可能是治疗肺癌的一个新策略。展开更多
The mechanism underlying CD4~＋CD25~＋Foxp3~＋ regulatory T cells（Tregs） promoting the development of colorectal cancer（CRC） was elucidated in the present study. Forty-eight cases of colorectal carcinomas, 22 case...The mechanism underlying CD4~＋CD25~＋Foxp3~＋ regulatory T cells（Tregs） promoting the development of colorectal cancer（CRC） was elucidated in the present study. Forty-eight cases of colorectal carcinomas, 22 cases of colon polyps and 21 cases of normal colorectal tissues were collected. The correlation among Foxp3, IL-10 and Stat3, and the clinical relevance of these three indexes were analyzed. The results showed that the levels of Foxp3 expressed in infiltrating CD4~＋CD25~＋Foxp3~＋Tregs, and IL-10 and Stat3 in CRC tissues were all significantly higher than those in polypus tissues and normal colon tissues（P〈0.01）. Pearson correlation analysis indicated that the expression level of Foxp3 was positively correlated with Stat3 at m RNA level（r=0.526, P=0.036）, and was positively correlated with IL-10 at protein level（r=0.314, P=0.030）. The Foxp3 expressed in CD4~＋CD25~＋Foxp3~＋Tregs was correlated with the histological grade, lymph node metastasis and TNM stage of CRC（P〈0.05 for all）. The IL-10 expression was correlated with the histological grade and TNM stage（both P〈0.05）. The Stat3 expression was correlated with the lymph node metastasis and TNM stage（both P〈0.05）. It was concluded that CD4~＋CD25~＋Foxp3~＋Tregs can inhibit tumor immunity in combination with some other related inhibitory cytokines and that Foxp3 expression in CD4~＋CD25~＋Foxp3~＋Tregs correlates with CRC progression.展开更多
文摘目的:通过检测梅毒血清固定患者外周血CD4^+CD25^+调节性T细胞(regulatory T ceIls,Treg)比例和功能的改变,探讨Treg在梅毒血清固定现象形成中的作用。方法:收集梅毒血清固定患者26例,正常对照23例,利用流式细胞术分别检测外周血Treg比例及Treg内Foxp3、细胞毒性T淋巴细胞抗原(CTLA)-4及白介素(IL)-10的定量表达情况。结果:梅毒血清固定组患者外周血Treg比例明显高于正常对照组(P<0.01);且Treg内转录因子Foxp3及功能性分子CTLA-4和IL-10的表达量也明显高于正常对照组(P<0.05或P<0.01)。结论:梅毒血清固定患者外周血Treg比例和功能的异常,可能是导致该现象形成的重要原因之一。
文摘目的探讨Treg及Th1/Th2类细胞因子在晚期肺癌肿瘤免疫抑制中的作用。方法选取100例初治晚期肺癌患者及50例健康自愿者。采用流式细胞术检测其外周血中Treg、Th1类细胞因子(IFN-γ、IL-2、TNF-a)、Th2类细胞因子(IL-4、IL-6、IL-10)水平,同时分析CD4^+CD25^+Treg与Th1/Th2类细胞因子之间的相关性。结果 (1)晚期肺癌患者外周血中Treg为(11.12±5.83)%,高于健康对照组(7.46±3.07)%,差异有统计学意义(P=0.003);(2)化疗前肺癌患者外周血中Treg为(11.12±5.83)%,明显高于化疗后(6.45±3.74)%,差异有统计学意义(P<0.001);(3)晚期肺癌患者与正常对照组Th1/Th2类细胞因子水平分别为:IFN-γ(8.56±3.62 vs 10.79±3.27,P=0.049)、IL-2(8.48±2.87 vs10.22±4.03,P=0.03)、TNF-a(6.18±2.67vs8.14±2.87,P=0.007)、IFN-γ/IL-4(3.33±1.44 vs 4.09±1.00,P=0.028)、IL-4(3.17±1.19 vs 2.45±0.43,P<0.001)、IL-6(3.88±2.08 vs 2.33±0.88,P<0.001)、IL-10(3.64±1.73 vs2.54±1.08,P=0.008),其中Th2类因子水平明显升高,差异有统计学意义(P均<0.05);(4)CD4^+CD25^+Treg与Th1类细胞因子IFN-γ、TNF-a、IL-2及IL-6无相关性(P均>0.05);与Th1/Th2(γ=-0.273,P=0.003)呈负相关;与Th2类细胞因子IL-4(γ=0.237,P=0.009)、IL-10(0.626,P<0.001)呈正相关(P均<0.05)。结论晚期肺癌患者CD4^+CD25^+Treg、Th2类细胞因子水平显著升高,Th1类细胞因子水平下降,它们共同导致肿瘤患者免疫抑制及肿瘤进展,监测其水平变化有助于判断肺癌患者疗效、预后,有效调控CD4^+CD25^+Treg及负性细胞因子水平可能是治疗肺癌的一个新策略。
基金supported by a grant from Natural Science Foundation of Hubei Province,China(No.2009CD201)
文摘The mechanism underlying CD4~＋CD25~＋Foxp3~＋ regulatory T cells（Tregs） promoting the development of colorectal cancer（CRC） was elucidated in the present study. Forty-eight cases of colorectal carcinomas, 22 cases of colon polyps and 21 cases of normal colorectal tissues were collected. The correlation among Foxp3, IL-10 and Stat3, and the clinical relevance of these three indexes were analyzed. The results showed that the levels of Foxp3 expressed in infiltrating CD4~＋CD25~＋Foxp3~＋Tregs, and IL-10 and Stat3 in CRC tissues were all significantly higher than those in polypus tissues and normal colon tissues（P〈0.01）. Pearson correlation analysis indicated that the expression level of Foxp3 was positively correlated with Stat3 at m RNA level（r=0.526, P=0.036）, and was positively correlated with IL-10 at protein level（r=0.314, P=0.030）. The Foxp3 expressed in CD4~＋CD25~＋Foxp3~＋Tregs was correlated with the histological grade, lymph node metastasis and TNM stage of CRC（P〈0.05 for all）. The IL-10 expression was correlated with the histological grade and TNM stage（both P〈0.05）. The Stat3 expression was correlated with the lymph node metastasis and TNM stage（both P〈0.05）. It was concluded that CD4~＋CD25~＋Foxp3~＋Tregs can inhibit tumor immunity in combination with some other related inhibitory cytokines and that Foxp3 expression in CD4~＋CD25~＋Foxp3~＋Tregs correlates with CRC progression.
