Yang Yan, Yang Zheng, Yang Yun
Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China.
College of Public Health, School of Public Health, Zhengzhou University, Zhengzhou, China.
Front Immunol. 2021 Jul 8;12:686031. doi: 10.3389/fimmu.2021.686031. eCollection 2021.
The prosperity of immunological therapy for cancer has aroused enormous passion for exploiting the novel targets of cancer immunotherapy. After the approval of blinatumomab, a bispecific antibody (bsAb) targeting on CD19 for acute lymphoblastic leukemia, a few of CD47-targeted bsAbs for cancer immunotherapy, are currently in clinical research. In our review of CD47-targeted bsAbs, we described the fundamental of bsAbs. Then, we summarized the information of four undergoing phase I researches, reviewed the main toxicities relevant to CD47-targeted bsAb immunological therapy of on-target cytotoxicity to healthy cells and a remarkable antigen-sink. Finally, we described possible mechanisms of resistance to CD47-targeted bsAb therapy. More clinical researches are supposed to adequately confirm its security and efficacy in clinical practice.
癌症免疫疗法的蓬勃发展激发了人们对开发癌症免疫治疗新靶点的巨大热情。在靶向CD19的双特异性抗体(bsAb)blinatumomab被批准用于治疗急性淋巴细胞白血病后,目前有几种靶向CD47的bsAb用于癌症免疫治疗,正处于临床研究阶段。在我们对靶向CD47的bsAb的综述中,我们描述了bsAb的基本原理。然后,我们总结了四项正在进行的I期研究的信息,回顾了与靶向CD47的bsAb免疫治疗相关的主要毒性,即对健康细胞的靶向细胞毒性和显著的抗原池。最后,我们描述了对靶向CD47的bsAb治疗产生耐药性的可能机制。更多的临床研究应该充分证实其在临床实践中的安全性和有效性。