通过共同阻断PD-L1和TIGIT来增强抗瘤免疫力,通过促进瘤导向反应和额外的VEGF抑制来促进抗瘤免疫力
Xi Zhu1, Xiaopei Cui1, Haijia Yu1
1Drug Discovery, Shanghai Huaota Biopharmaceutical Co. Ltd., Shanghai, China.
Frontiers in immunology
|January 30, 2026
概括
一种针对PD-L1和TIGIT通路的新型双特异性抗体通过促进T细胞反应来增强癌症免疫疗法. 将其与VEGF阻断相结合,进一步改善了瘤控制,对各种癌症类型显示有前途.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 目前针对PD-1/PD-L1通路的免疫疗法非常有希望,但可以得到加强.
- 紧密的通路阻塞是改善抗癌免疫力的另一种策略.
- 共同阻断PD-L1和TIGIT通路提供了一种潜在的策略,以克服单一向疗法的局限性.
研究的目的:
- 研究在癌症免疫治疗中加强PD-L1和TIGIT通路的联合阻断的策略.
- 为了评估针对PD-L1和TIGIT的双特异性抗体 (HB0036).
- 探索涉及PD-L1/TIGIT联合阻塞与VEGF抑制的组合疗法,并分析患者样本数据.
主要方法:
- 在体外评估T细胞增殖对双特异性抗体 (HB0036) 和父母抗体的反应.
- 使用合成和异种移植瘤模型进行体内研究,以评估瘤控制和免疫特征.
- 结合PD-L1/TIGIT联合阻断与VEGF抑制的临床前评估.
- 在患者瘤样本中分析PD-L1,CD155表达和空间分布.
主要成果:
- 双特异抗体HB0036在体外诱导了较大的T细胞增殖,与联合的父母抗体相比,与CD226上调和PD-1下调有关.
- 在临床前模型中,HB0036证明了瘤控制的改善和良好的免疫学概况.
- 在临床前研究中,与VEGF阻断共同准PD-L1和TIGIT进一步增强了瘤控制.
- 对患者样本的分析提供了PD-L1和CD155表达模式和空间分布对T细胞反应的影响的见解.
结论:
- 双特异性抗体介导的PD-L1和TIGIT的共同阻断是增强癌症免疫疗法的有效策略.
- 结合治疗与VEGF抑制提供进一步改善瘤控制.
- 了解瘤异质性和免疫细胞相互作用对于优化PD-L1和TIGIT在不同癌症类型中的共同阻断疗效至关重要.
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