VIF-Ig:通过将VHH单位纳入ADCC的新型Fc框架
Yaohui Li1, Yichen Huang1, Yingdan Duan1
1Fuhong Biotherapeutics, Shanghai, Pudong district 200120, China.
Protein engineering, design & selection : PEDS
|January 28, 2026
概括
一种新的VIF-Ig工程方法用抗NKp46 VHH取代Fc CH2域,增强抗体依赖细胞细胞毒性 (ADCC),而不损害下一代疗法的稳定性或向结合.
科学领域:
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
- 蛋白质工程是指蛋白质工程.
背景情况:
- 抗体依赖细胞细胞毒性 (ADCC) 对于抗体疗法至关重要.
- 目前用于增强ADCC的策略,如Fc突变或NK细胞受体融合,具有局限性,包括稳定性受损,受体下调或硬质阻碍.
研究的目的:
- 引入一种新的Fc工程策略,VIF-Ig,该策略将CH2域替换为抗NKp46 VHH.
- 克服现有的ADCC增强方法的局限性.
- 为下一代免疫细胞参与者开发一个多功能平台.
主要方法:
- 将Fc区域的CH2域替换为抗NKp46 VHH,以创建VIF-Ig.
- 评估了ADCC的功效,热稳定性和FcRn结合.
- 证明了VIF-Ig适应VHH以准各种表征物的能力.
主要成果:
- VIF-Ig表现出强大的ADCC活动.
- 这些新型分子显示出高热稳定性.
- 保持FcRn结合,确保有利的药理动力学.
- 与CD16a依赖策略不同,NKp46表达保持稳定.
- VIF-Ig可以模块化调整,以针对各种表位.
结论:
- VIF-Ig代表了一种新而通用的模块化平台,用于工程增强免疫细胞参与者.
- 这种方法提供了更好的疗效和可调节的特异性,特别是在多特异性疗法中.
- VIF-Ig解决了当前ADCC增强战略的关键局限性.
关键词:
ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC is also known as ADCC ADCC ADCC is also known as ADCC抗NKp46 VHHHH 的 抗NKp46 的在CH2中,CH2是二氧化碳.在 NKCE NKCE 中.在VHH-Incorporated Fc (VIF-Ig) 的公司.相关概念视频
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