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Expression and significance of CD4+ CD25+ CD127low/- regulation T cells in the advanced gastric cancer
Author(s): 
Pages: 2065-2069
Year: Issue:  15
Journal: Chongqing Medical Journal

Keyword:  stomach neoplasmsT-lymphocytesflow cytometrychemotherapyadvanced gastric cancerCD4+ CD25+ CD127low/- regulatory T cells;
Abstract: 目的 研究CD4+ CD25+ CD127low/-调节性T细胞(Treg)在晚期胃癌患者外周血中的表达水平及其对化疗疗效判断的意义.方法 采用流式细胞术(FCM)检测30例晚期胃癌患者和10例健康体检者外周血中CD4+ CD25+ CD127low/-Treg的表达水平.结果 晚期胃癌患者外周血中CD4+ CD25+ CD127low/-Treg占CD4+T淋巴细胞的百分比为(10.41±2.85)%,明显高于健康体检者(5.05±1.32)%(t=8.04,P<0.01),也明显高于化疗2周期后(7.07±1.45)%,(t=5.72,P<0.01)和化疗4周期后(7.30±1.65)%(t=5.17,P<0.01).晚期胃癌患者化疗2周期后外周血中CD4+ CD25+ CD127low/-Treg占CD4+T淋巴细胞的百分比为(7.07±1.45)%,与化疗4周期后(7.30±1.65)%比较,差异无统计学意义(t=0.57,P>0.05).晚期胃癌患者外周血中CD4+ CD25+ CD127low/-Treg表达水平与患者性别、年龄、胃癌相关肿瘤抗原及肿瘤部位无相关性(P>o.05),低分化程度与中分化程度差异无统计学意义(P>0.05).晚期胃癌患者化疗2周期后缓解组(完全缓解+部分缓解)外周血CD4+T细胞中CD4+ CD25+ CD127low/-Treg的水平为(6.25±1.08)%与化疗2周期后未缓解组(病变稳定+疾病进展)的(7.98±1.27)%比较,差异有统计学意义(t=4.02,P<0.01).结论 晚期胃癌患者外周血中CD4+ CD25+ CD127low/-Treg的表达水平与肿瘤缓解情况有关.
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