针对GPCR的纳米体的生成和表征
Shenglan Zhang1, Zhiran Fan1, Jianfeng Liu1,2
1Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou 510005, China.
Biophysics reports
|May 13, 2024
概括
研究人员开发了一种新方法来制造向G蛋白结合受体 (GPCRs) 的纳米体. 这种方法克服了针对这些重要药物点的抗体开发方面的挑战.
科学领域:
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- G蛋白结合受体 (GPCRs) 是关键的细胞膜蛋白和重要的药物发现目标.
- 纳米体 (VHH抗体) 对针对GPCRs的传统抗体具有治疗优势.
- 在部分屏蔽的GPCR表面上,管的可访问性对纳米体开发构成了重大挑战.
研究的目的:
- 开发一种通用协议,用于生成针对GPCRs的纳米体.
- 为了克服GPCR向的纳米体开发中表位素可访问性的挑战.
主要方法:
- 使用了来自GPCR过度表达HEK293细胞的细胞膜提取物,用于拉玛/阿尔帕卡免疫.
- 构建了一个免疫VHH库,并使用菌体显示生物选进行纳米体选择.
- 在大肠杆菌 (E. coli) 中的重组表达和单克隆纳米体的净化以进行表征.
主要成果:
- 通过使用新型免疫策略,成功生成了向GPCRs的纳米体.
- 证明了细胞膜提取物方法用于纳米体发现的可行性.
- 描述了开发的单克隆纳米体的结合力.
结论:
- 开发的通用协议为生产针对GPCRs的纳米体提供了一个可行的策略.
- 这种方法解决了表位素可访问性的关键问题,为新型GPCR向治疗铺平了道路.
- 这些发现有助于推进基于纳米体的GPCR药物发现.
相关概念视频
01:12GPCR Desensitization
6.0K
G protein-coupled receptor (GPCR) signaling plays a crucial role in cell functioning. GPCR desensitization is an equally essential process. It allows cells to respond to changing environments and regain sensitivity to new stimuli while preventing unnecessary stimulation when no longer needed. Prolonged exposure to stimuli leads to GPCR desensitization. It involves blocking the receptors from binding and activating additional G proteins. This inhibits activation of downstream effectors, thereby...
6.0K
01:30Transducer Mechanism: G Protein–Coupled Receptors
1.9K
G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
GPCRs are also called heptahelical,...
GPCRs are also called heptahelical,...
1.9K