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鼻咽癌细胞株体外诱导同种异体T细胞TCR Vβ CDR3谱型和细胞毒性分析 被引量:1

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摘要 目的用鼻咽癌细胞株CNE2体外负载同种异体树突状细胞(dendritic cell,DC)诱导T淋巴细胞,使之活化为细胞毒性T淋巴细胞(cytotoxic T lymphocyte,CTL),观察其体外特异性杀伤和克隆性增殖。方法用GM-CSF,IL-4和TNF-α体外诱导健康志愿者外周血单核细胞,用CNE2负载,使之分化为成熟DC,流式细胞仪检测负载前后DC的表型特征。在IL-2的作用下,用负载CNE2抗原的DC诱导自身T细胞生成特异性CTL。乳酸脱氢酶释放法检测其特异性杀伤活性;采用免疫谱型分析技术分析T细胞的克隆性。结果健康志愿者外周血单核细胞体外在GM-CSF,IL-4和TNF-α诱导下获得具有典型表型特征的成熟DC,其诱导的CTL对CNE2有明显的特异性杀伤作用;PBMC的TCRVβCDR3谱型呈高斯分布,而诱导后的T细胞部分家族出现优势表达。结论负载鼻咽癌抗原的同种异体DC所诱导的CTL在体外对鼻咽癌细胞有特异性杀伤作用,优势表达的TCRVβCDR3家族对鼻咽癌治疗有潜在的临床应用价值。
出处 《广东医学》 CAS CSCD 北大核心 2007年第6期878-880,共3页 Guangdong Medical Journal
基金 国家自然科学基金资助项目(编号:30471636)
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