基于BAFF的三功能T细胞参与剂触发了针对B细胞恶性瘤的强大的瘤免疫力
Shuhong Li1, Licai Shi1, Qiaoru Guo1
1State Key Laboratory of Chemical Oncogenomics, Shenzhen Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
Protein & cell
|June 27, 2025
概括
使用BAFF配体的新型T细胞参与剂 (TCE) 在B细胞恶性瘤中显示出前景. 最优的TriBAFF/CD3/ABDCon构造有效准瘤和T细胞,优于现有疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 生物技术是生物技术.
背景情况:
- T细胞参与剂 (TCE) 是一种先进的蛋白质工程疗法,在B细胞恶性瘤中取得了显著的临床成功.
- 多种特异性TCE提供了一种克服瘤异质性和抗原逃逸的策略,但格式设计仍然是一个挑战.
研究的目的:
- 设计和评估各种基于BAFF的T细胞吸引器格式,针对B细胞恶性瘤的BAFF受体 (BAFFR,BCMA,TACI).
- 为了确定一个最佳的构造增强T细胞介导的细胞毒性和瘤根除.
主要方法:
- 基于BAFF的工程TCE具有不同的格式,包含与BAFF连接体融合的抗CD3Fab或IgG域.
- 价值结构多样化,包括长效元素,如Fc域或白蛋白结合域共识序列 (ABDCon).
- 在B细胞恶性瘤模型中评估了细胞毒性和瘤负担控制.
主要成果:
- 包括fc域并没有改善瘤根除;价值和空间配置显著影响了细胞毒性.
- 三功能的TriBAFF/CD3/ABDCon结构,与反CD3 Fab骨干和BAFF/ABDCon融合,被证明是最优的.
- 与blinatumomab和基于BAFF的CAR-T细胞相比,TriBAFF/CD3/ABDCon在B细胞恶性瘤模型中表现出优异的瘤控制和耐受性.
结论:
- 自然配体可以有效地被用作T细胞激活器设计中的抗体向模块.
- TriBAFF/CD3/ABDCon格式提供了一个有希望的下一代多特异性TCE,用于改善B细胞恶性瘤和潜在的其他癌症的治疗.
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