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树突细胞/肿瘤细胞融合疫苗对食管癌移植瘤生长的抑制作用
引用本文:邓勇军,张兰军,苏晓东,张冬坤,戎铁华,王其京,夏建川.树突细胞/肿瘤细胞融合疫苗对食管癌移植瘤生长的抑制作用[J].癌症,2009(10):1067-1071.
作者姓名:邓勇军  张兰军  苏晓东  张冬坤  戎铁华  王其京  夏建川
作者单位:华南肿瘤学国家重点实验室;中山大学肿瘤防治中心胸科;昆明医学院第一附属医院胸外科;
基金项目:广州市科技攻关引导项目(No.2004Z3-E0311)~~
摘    要:背景与目的:我们前期的研究表明树突细胞/肿瘤细胞融合疫苗能有效诱导体外抗食管癌细胞的特异性免疫应答。在此基础上,本研究进一步探讨树突细胞/肿瘤细胞融合疫苗诱导抗原特异性细胞毒性T淋巴细胞(cytotoxic T lymphocytes.CTLs)对食管癌细胞株EC-109裸鼠皮下移植瘤的体内抑瘤作用及对肿瘤细胞增殖和凋亡的影响。方法:①采用聚乙二醇法制备树突细胞/肿瘤细胞融合疫苗并诱导抗原特异性CTLs产生。②建立食管癌EC-109细胞裸鼠皮下移植瘤模型,将成功荷瘤的裸鼠随机分为3组,分别以融合细胞激活的CTLs(A组.n=11)、未激活的T淋巴细胞(B组,n=11)以及RMPI-1640培养液(C组,n=11)作为效应细胞进行瘤内注射,每周一次。③4周后处死动物剥离肿瘤组织.测量并比较各组肿瘤组织的平均体积及平均湿重,计算抑瘤率。④免疫组化SP法检测3组裸鼠移植瘤增殖细胞核抗原(proliferating cell nuclear antigen,PCNA)的表达。⑤流式细胞仪检测3组肿瘤细胞周期及细胞凋亡率,比较各组肿瘤细胞的S期细胞平均百分比(S-phase fraction,SPF)以及细胞平均凋亡率。结果:①A组肿瘤组织的平均体积显著小于B组和C组,差异有统计学意义(881.45±31.14)mm^3 vs.(1493.37±51.67)mm^3,(2065.77±87.55)mm^3,F=950.67.P=0.00],其平均湿重亦显著小于B组和C组,差异有统计学意义(0.88±0.04)gvs.(1.38±0.07)g,(2.04±0.11)g,F=1335.90,P=0.00];A组抑瘤率明显高于B组,差异有统计学意义(56.86% vs.32.35%,F=1218.08,P=0.001)。②A组肿瘤的平均PCNA—LI明显低于B组和C组,差异有统计学意义(26.83±0.95)% vs.(51.82±1.51)%,(68.93±2.40)%,F=1528.39,P=0.000]。③A组肿瘤细胞平均SPF值明显低于B、C两组,差异有统计学意义(12.

关 键 词:食管肿瘤  树突细胞  融合疫苗  移植瘤  细胞毒性T细胞

Dendritic cell-tumor cell fusion vaccine prevents growth of subcutaneous transplanted esophageal carcinomas
Yong-Jun Deng, Lan-Jun Zhang, Xiao-Dong Su, Dong-Kun Zhang, Tie-Hua Rong, Qi-Jing Wang , Jian-Chuan Xia .State Key Laboratory of Oncology in South China,Guangzhou,Guangdong,P.R.China.Dendritic cell-tumor cell fusion vaccine prevents growth of subcutaneous transplanted esophageal carcinomas[J].Chinese Journal of Cancer,2009(10):1067-1071.
Authors:Yong-Jun Deng    Lan-Jun Zhang  Xiao-Dong Su  Dong-Kun Zhang  Tie-Hua Rong  Qi-Jing Wang  Jian-Chuan Xia State Key Laboratory of Oncology in South China  Guangzhou  Guangdong    PRChina
Institution:Yong-Jun Deng,1,2 Lan-Jun Zhang,2 Xiao-Dong Su,2 Dong-Kun Zhang,2 Tie-Hua Rong,2 Qi-Jing Wang1 , Jian-Chuan Xia1 1.State Key Laboratory of Oncology in South China,Guangzhou,Guangdong,510060,P.R.China 2.Department of Thoracic Surgery,Sun Yat-sen University Cancer Center,P.R.China
Abstract:Background and Objective:Our previous studies have shown that dendritic cell(DC)-tumor cell fusion vaccine can induce specific antitumor response against esophageal carcinoma cells.This study was to investigate the inhibitory effect of intratumor injection of the antigen-specific cytotoxic T lymphocytes(CTLs) induced by DC-tumor cell fusion vaccine against subcutaneously transplanted esophageal carcinoma cells in nude mice,and to analyze the influence of DC/tumor cell fusion vaccine on proliferation and apo...
Keywords:esophageal neoplasm  dendrtic cells  fusion vaccine  transplanted tumor  cytotoxic T lymphocytes  
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