一种经过六合化增强的,Fc沉默的激动性CD27抗体,单独作为单一剂和与PD-1阻断剂结合,增强T细胞效应器功能
Işıl Altıntaş1, Kristina B Nürmberger2, Andrea Imle2
1Genmab B.V, Uppsalalaan 15, 3584 CT, Utrecht, The Netherlands.
Scientific reports
|July 24, 2025
概括
HexaBody-CD27可以增强T细胞激活和抗瘤免疫力,独立于FcγR相互作用,而不会耗尽T细胞. 将其与PD-1阻断相结合,进一步增强了免疫反应.
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:
- CD27是T细胞免疫的关键辅助刺激受体.
- 现有的CD27激动剂可能会通过Fc介导的效应函数导致T细胞枯竭.
- 需要新的策略来增强T细胞激活的抗瘤免疫力.
研究的目的:
- 开发和表征Hexabody-CD27,一种新的激动性CD27抗体.
- 评估HexaBody-CD27在独立于FcγR交叉链接的情况下增强T细胞反应的能力.
- 评估HexaBody-CD27的安全性和有效性,特别是与PD-1阻断结合使用.
主要方法:
- 工程HexaBody-CD27具有增强六体化突变和Fc沉默突变.
- 在体外报告员测试以评估CD27信号传递.
- 测试评估T细胞增殖,细胞毒性和细胞因子分泌在人类原发性淋巴细胞.
- 来自非小细胞肺癌 (NSCLC) 标本的瘤透淋巴细胞 (TIL) 的活体分析.
- 与抗PD-1抗体的组合研究.
主要成果:
- 在体外,HexaBody-CD27诱导了CD27信号传递,并增强了T细胞增殖,细胞毒性和细胞因子分泌.
- 与基准IgG1 CD27抗体不同的是,HexaBody-CD27没有诱导T细胞细胞化.
- HexaBody-CD27促进了NSCLC中的TILs的外体扩张,包括CD8+TILs.
- 使用Hexabody-CD27和抗PD-1的联合治疗协同增强了T细胞反应.
结论:
- HexaBody-CD27是一种新型的CD27激动剂,可增强T细胞激活和效应器功能.
- 它的Fc工程设计使FcγR独立激活,并避免T细胞耗尽.
- HexaBody-CD27作为单一疗法和与PD-1阻断结合用于癌症免疫疗法的承诺.
相关概念视频
Tumor Immunotherapy
662
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
662
T Cell Activation and Clonal Selection
4.9K
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
4.9K


