子卡帕轻链的域间二硫化物键异型影响小鼠-子仿真抗体性能
Yang-Nim Park1, Douglas W Houston1
1Developmental Studies Hybridoma Bank, Department of Biology, The University of Iowa, 028 BBE, Iowa City IA, 52242, USA.
bioRxiv : the preprint server for biology
|September 26, 2025
概括
选择正确的子轻链脚手架对于仿真抗体工程至关重要. K1-b9全型支持强大的表达和功能,与K1-b4不同,它可以损害复合抗体的性能.
科学领域:
- 生物技术是生物技术.
- 免疫学 免疫学 免疫学
- 蛋白质工程是指蛋白质工程.
背景情况:
- 化学单克隆抗体将不同抗体的可变区域结合起来,以增强功能.
- 抗体结构的跨物种差异可能会对嵌合式抗体的设计和性能产生负面影响.
- 子轻链异型在仿真抗体开发中提出了独特的挑战.
研究的目的:
- 评估子轻链全型对仿真抗体表达和功能的影响.
- 为了确定影响化学抗体性能的结构因素.
- 为优化化学抗体设计提供指导.
主要方法:
- 用小鼠可变区域和不同的子轻链全型 (K1-b4和K1-b9) 构建嵌合抗体.
- 评估复合表达水平和抗原结合活性.
- 进行结构分析,以确定抗体构成中的潜在干扰.
- 在诸如免疫阻塞,免疫沉和免疫染色等应用中评估抗体功能.
主要成果:
- 使用子K1-b4全型的化学抗体表现不佳,抗原识别减少.
- 结构分析表明,K1-b4结构中的一个链内,域内二硫化键的破坏.
- 恢复关键残留部分挽救了K1-b4结构中的表达和活动.
- 具有子K1-b9全型的化学抗体保持了强大的生产和抗原结合活性.
- K1-b9全型在多个抗体应用中促进了一致的性能.
结论:
- 子轻链脚手架的选择显著影响了仿真抗体的表达和功能.
- K1-b4全型对二硫化物键破坏的敏感性阻碍了仿真抗体的性能.
- K1-b9全型提供了一个稳定的支架,确保可靠的仿真抗体生产和活性.
- 优化轻链选择对于成功的重组抗体工程至关重要.
关键词:
抗体工程是针对抗体的工程.仿真抗体的抗体是一种仿真抗体.免疫球蛋白G (IgG) 是一种免疫组织化学 免疫组织化学免疫沉 免疫沉是一种这是一种单克隆抗体.西部污染 (Western Blot) 是一种更多相关视频
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