PD-1抗体治疗肿瘤的临床研究进展[摘 要]PD-1(programmed death receptor-1,程序性死亡受体-1)结合其配体PD-L1(程序性死亡配体-1)可向T细胞传递一种负向调控信号诱导其凋亡,显著抑制T细胞的活化和增殖,使癌细胞无法被杀灭。
PD-1的单克隆抗体是近几年治疗肿瘤领域有显著的效果。
本文对抗PD-1治疗肿瘤的机制、在临床中的研究进展,探讨PD-1抑制剂在治疗肿瘤中的应用。
[关键词]PD-1; PD-1 /PD-L1 抑制剂; 肿瘤免疫治疗Progress in the clinical study of PD-1 antibody against tumor[Abstract]the PD - 1 (programmed death receptor-1) combined with its ligand PD - L1 (programmed death ligand-1) can be a negative control signals to T cells to induce its apoptosis, inhibit T cell activation and proliferation, make cancer cells cannot be exterminated. The monoclonal antibody of pd-1 is a significant therapeutic effect in recent years. This paper deals with the mechanism of pd-1 in the treatment of tumors and advances in clinical research, and discusses the application of pd-1 inhibitor in the treatment of tumors.[key words]PD-1; PD-1 / PD-L1 inhibitors; cancer immunotherapeutic在肿瘤领域中肿瘤免疫法已经成为一种新的疗法,已在临床中应用。
阻断PD-1(programmed death receptor-1)/PD-L1(programmed death ligand-1)的信号通路,可重新激活衰竭的T细胞,并改善T细胞的活化和增殖能力,增强了机体免疫应答反应,加强对肿瘤的控制。
本文就PD-1抗体在肿瘤免疫治疗中的研究进展和未来的展望进行综述。
1PD-1信号通路的研究PD-L1与PD-1的相互结合作用显著抑制T细胞体内的反应,尤其是在肿瘤微环境中[1]。
经研究表明,在肿瘤微环境中,PD-1/PD-L1相互结合可抑制淋巴细胞的活化增殖、诱导抗原特异性T细胞凋亡、使CD4 T细胞向Foxp3 性T细胞的分化,导致T细胞功能障碍[2]。
通过阻断PD-1/PD-L1信号通路可重新激活肿瘤患者的TEX, 改善TEX的效应功能,使对肿瘤的控制和杀伤增强[3]。
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