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抗CD28+B7.1单抗共刺激PBLs诱导肝癌细胞凋亡的蛋白激酶信号转导
引用本文:杨红,陈耕夫,黄玉珊,黄树林.抗CD28+B7.1单抗共刺激PBLs诱导肝癌细胞凋亡的蛋白激酶信号转导[J].免疫学杂志,2001,17(1):40-42.
作者姓名:杨红  陈耕夫  黄玉珊  黄树林
作者单位:1. 广东药学院分子生物学研究室,
2. 中山大学生命科学院,
基金项目:国家自然科学基金(396400005)和广东省科教兴医“五个一”工程重点课题(粤卫科[1996]20号)资助项目
摘    要:目的 研究T淋巴细胞活化、增殖、介导肝癌细胞凋亡过程中其蛋白激酶C(PKC)和酪氨酸蛋白激酶(TPK)的活性变化。方法 用抗CD28+B7.1(CD80)单克隆抗体共刺激正常人外周血淋巴细胞(PBLs)后作用于肝癌细胞(BEL-7402)。结果 激活的T细胞中PKC、TPK活性明显增强,并与肝癌细胞凋亡程度呈正相关。结论 PKC、TPK在T细胞活化、增殖及诱导肝癌细胞凋亡的信号转导中起重要作用。

关 键 词:蛋白激酶  抗CD28+B7.1单抗  细胞凋亡  信号转导  肝癌  PBLs
文章编号:1000-8861(2001)01-0040-03
修稿时间:2000年9月25日

The signal transduction of protein kinase in PBLs co-stimulated by anti-CD28
Abstract:Objective To investigate the activities of protein kinase C (PKC)and tyrosine protein kinase (TPK) in the activated and proliferating T cells and the induction of apoptosis of the hepatoma cells. Methods Healthy human PBLs were co-stimulated by anti-CD28 and anti-CD80 (B7.1) McAb and acted on the hepatoma cells (BEL-7402). Results The activities of PKC and TPK were significantly higher in the activated T cells than those in the control cells, and were positively related to apoptosis of hepatoma cells. Conclusion PKC and TPK play important role on the signal transduction in the activated and proliferating T cells and the induction of apoptosis of hepatoma cells.
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