Anti-CD132 Monoclonal Antibodies Inducing T Cells Apoptosis after Alloantigen Stimulation and Its Possible Clinical Applications  

抗CD132抗体介导同种异型抗原激活的T细胞凋亡(英文)

作　　者：陈必成[1] 昌盛[1] 唐莉[1] 张鑫[1] 向芙莉[1] 郭晖[1] 陈忠华 

机构地区：[1]华中科技大学同济医学院附属同济医院器官移植研究所教育部/卫生部器官移植重点实验室,湖北武汉430030

出　　处：《Journal of Chinese Pharmaceutical Sciences》2005年第2期125-130,共6页中国药学（英文版）

基　　金：National Basic Research Program of China (973 Pro gram, No.2003CB515505) National Natural Science Foundation of China (No.30271243)

摘　　要：Aim To investigate the mechanism of anti-CD132 monoclonal antibodies (mAbs)inhibiting T cells proliferation in vitro, and their potential values for clinical use. MethodsBALB/c and C57BL/6 mice splenocytes were harvested for two-ways mixed lymphocyte culture (MLC).Anti-CD132 mAbs (final concentration 100 mg·L^(-1)) were added in MLC on day 0 (group 1) or day 3(group 2). Fluorescence activated cell sorting (FACS) was used to measure the proliferation(carboxy-fluorescein dia cetate, succinimidyl ester, CFSE), apoptosis of T cells (PE-CD3,FTTC-annexin-v), and cell cycle (pro-pidium iodide stain) . The expression of survivin in T cellswas detected by immunochemical stai-ning. Re-sults Multi-generation CFSE-labeled splenocytes werefound dividing and their fluorescent strength decreased in MLC. There was no noticeable change influorescent intensity in group 1 and group 2. On day 3, apoptosis induced by anti-CD132 mAbs wasdetected in part of T cells, but was not detected in the former two days in group 1. In group 2, thenumber of cells in M phase (activated T cells) decreased and apoptot-ic cells increased on day 4.The phenomena were not observed in control group (P < 0.01). Expression of survivin in T cells wasdetected in control group but not in groups 1 and 2. Conclusion Blockade of CD132 signaling pathwayinhibits T cell proliferation in vitro by means of inducing activated alloreactive T cell apoptosisbut not the resting T cells. Anti-CD132 mAbs may be candidates for clinical applications.目的研究抗CD132单抗在体外对T细胞增殖的抑制作用以及其可能的临床应用价值。方法分离BALB/c、C57BL/6小鼠的脾细胞进行双向混合淋巴细胞培养(MLC)。分别于第一天(组1)或第三天(组2)加入抗CD132单抗(终浓度达到100mg·L-1)。用流式细胞技术检测细胞增殖(CFSE),T细胞凋亡(PE-CD3,FITC-Annexin-v)以及细胞分裂周期(propidiumiodidestain)。T细胞Survivin的表达则用免疫化学染色法检测。结果混合淋巴细胞培养的结果显示CFSE标记的脾细胞出现了不同程度的荧光强度减弱,提示不同分裂次数的细胞存在。与MLC组比较,组1和组2中均未发现有进一步细胞分裂的迹象存在。在第3天时,组1可以检测到部分T细胞凋亡,而在培养的最初两天并无此现象。在组2中,第4天处于G2/M期的细胞出现减少而凋亡细胞增多。对照组无此现象发生(P<0.01)。同时,在MLC组中可检测到survivin在T细胞表达,而在组1和组2中则未能检测到。结论研究表明阻断CD132信号途径可以通过诱导同种异型抗原活化的T细胞凋亡而抑制T细胞增殖。因此,抗CD132单抗很有希望成为器官移植中抗排斥的临床药物。

关 键 词：CD132 APOPTOSIS two-ways mixed lymphocyte culture 

分 类 号：R392.1[医药卫生—免疫学]