决定异体 CAR T 细胞排斥与扩增的细胞和分子机制
Cellular and molecular mechanisms determining allogeneic CAR T cell rejection and expansion.
我们评估了11例接受单一批次cemacabtagene ansegedleucel(cema-cel)治疗的大B细胞淋巴瘤患者,cemacabtagene ansegedleucel是一种异体抗CD19 CAR T产品。
英文原题:Targeting CD22 for B-cell hematologic malignancies.
然而,30%-60% 的患者最终复发,其中 CD19 阴性复发是持续缓解的重要障碍。
靶向CD19的嵌合抗原受体(CAR)T细胞疗法治疗复发或难治性(R/R)B细胞恶性肿瘤已显示显著临床疗效。然而,30%至60%的患者最终复发,其中CD19阴性复发是维持缓解的重要障碍。恶性B细胞中的CD22表达不依赖于CD19,因此CD22是治疗CD19 CAR-T耐药患者的潜在替代靶点。以抗体药物偶联物(ADC)和CAR-T细胞为主的CD22靶向疗法已广泛进入临床应用,并显示可接受的毒性和良好疗效。本综述探讨CD22的分子和生理特征、CD22 ADC和CAR-T细胞的开发,以及现有临床数据,并提出克服肿瘤逃逸、提高CD22靶向治疗疗效的思路。
CD19-targeted chimeric receptor antigen (CAR)-T cell therapy has shown remarkable clinical efficacy in the treatment of relapsed or refractory (R/R) B-cell malignancies. However, 30%-60% of patients eventually relapsed, with the CD19-negative relapse being an important hurdle to sustained remission. CD22 expression is independent of CD19 expression in malignant B cells. Consequently, CD22 is a potential alternative target for CD19 CAR-T cell-resistant patients. CD22-targeted therapies, mainly including the antibody-drug conjugates (ADCs) and CAR-T cells, have come into wide clinical use with acceptable toxicities and promising efficacy. In this review, we explore the molecular and physiological characteristics of CD22, development of CD22 ADCs and CAR-T cells, and the available clinical data on CD22 ADCs and CAR-T cell therapies. Furthermore, we propose some perspectives for overcoming tumor escape and enhancing the efficacy of CD22-targeted therapies.
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