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:Targeted therapies and resistance mechanisms in lymphoma: Current landscape and emerging solutions.
Targeted therapies and resistance mechanisms in lymphoma: Current landscape and emerging solutions.
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理解淋巴瘤的分子基础及耐药机制,对于优化靶向治疗至关重要。
淋巴瘤是一组临床行为和基础生物学各异的血液系统恶性肿瘤。世界卫生组织分类第五版(WHO-HAEM5,2022)提供了更新的谱系分类框架,综合免疫表型、遗传和临床特征对淋巴系肿瘤进行分类。随着分子谱分析和免疫治疗进步,靶向疗法改变了霍奇金和非霍奇金淋巴瘤的治疗格局。本综述阐述细胞表面及胞内受体(包括CD19、CD20、CD30、PD-1和CCR4)在淋巴瘤发生机制和治疗靶向中的关键作用。我们全面评估FDA批准的靶向药物,包括单克隆抗体(利妥昔单抗、维布妥昔单抗、奥妥珠单抗、莫格利珠单抗)、免疫检查点抑制剂(纳武利尤单抗、帕博利珠单抗)、CAR-T 疗法(阿基仑赛、替沙仑赛、利基仑赛、brexu-cel)、双特异性T细胞衔接器(莫妥珠单抗、埃普可单抗)及小分子抑制剂(伊布替尼、艾代拉里斯、维奈克拉),并按作用机制、疗效和安全性评估其在主要淋巴瘤亚型中的表现。尽管取得显著进步,治疗耐药仍是主要障碍。我们将耐药机制归纳为抗原丢失或调节、信号通路再激活、免疫微环境适应以及遗传/表观遗传演变。例子包括CAR-T 治疗后CD19抗原丢失、导致伊布替尼耐药的BTK突变,以及损害T细胞功能的免疫检查点上调。克服耐药的新兴策略包括合理联合治疗、双靶点CAR构建体、新一代双特异性抗体和精准指导的免疫治疗。整合生物标志物分析、实时耐药监测和新型免疫工程,有望突破当前治疗局限。总之,理解淋巴瘤分子基础及耐药机制对于优化靶向治疗至关重要。本综述综合现有证据,为临床决策提供参考,并展望实现持久、个体化淋巴瘤照护的未来方向。
Lymphomas represent a diverse group of hematologic malignancies with variable clinical behavior and underlying biology. The fifth edition of the WHO classification (WHO-HAEM5, 2022) provides an updated, lineage-based framework to categorize lymphoid neoplasms, integrating immunophenotypic, genetic, and clinical features. With advancements in molecular profiling and immunotherapy, targeted treatments have transformed the therapeutic landscape of both Hodgkin and non-Hodgkin lymphomas. This review delineates the critical role of cell surface and intracellular receptors-including CD19, CD20, CD30, PD-1, and CCR4-in lymphoma pathogenesis and as therapeutic targets. We comprehensively evaluate FDA-approved targeted agents, including monoclonal antibodies (rituximab, brentuximab vedotin, obinutuzumab, mogamulizumab), immune checkpoint inhibitors (nivolumab, pembrolizumab), CAR T-cell therapies (axi-cel, tisa-cel, liso-cel, brexu-cel), bispecific T-cell engagers (mosunetuzumab, epcoritamab), and small-molecule inhibitors (ibrutinib, idelalisib, venetoclax). Each class is appraised for mechanism of action, efficacy, and safety in key lymphoma subtypes. Despite significant progress, therapeutic resistance remains a major obstacle. We categorize resistance mechanisms as antigen loss or modulation, pathway reactivation, immune microenvironment adaptation, and genetic/epigenetic evolution. Examples include CD19 antigen loss post-CAR-T therapy, BTK mutations conferring ibrutinib resistance, and immune checkpoint upregulation impairing T-cell function. Emerging strategies to counteract resistance include rational combination therapies, dual-targeted CAR constructs, next-generation bispecific antibodies, and precision-guided immunotherapy. Integration of biomarker profiling, real-time resistance monitoring, and novel immune-engineering approaches offers potential to overcome current therapeutic limitations. In conclusion, understanding the molecular basis of lymphoma and resistance mechanisms is critical to optimizing targeted therapy. This review synthesizes current evidence to inform clinical decision-making and outlines future directions for durable, personalized lymphoma care.
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