使用开放表面等离子体共振 (OpenSPR) 来描述蛋白质-蛋白质相互作用的结合亲缘关系
Cassie Shu Zhu1,2, Jianhua Li1, Haichao Wang1,2
1The Feinstein Institutes for Medical Research, Northwell Health, 350 Community Drive, Manhasset, NY, USA.
Bio-protocol
|September 18, 2023
概括
尼科亚OpenSPR使用金纳米粒子进行无标签的实时蛋白质-蛋白质相互作用分析. 这种具有成本效益的技术提供了用户友好的动力学和亲和度测量,在这里详细介绍了 procathepsin L 相互作用.
科学领域:
- 生物化学 生物化学
- 生物物理学的生物物理.
- 纳米技术 纳米技术
背景情况:
- 表面等离子体共振 (SPR) 是一种无标签的光学技术,用于实时分析蛋白质-蛋白质相互作用.
- 传统的SPR (例如Biacore) 使用连续的金膜来检测光角度的变化.
- 尼科亚生命科学公司的OpenSPR利用金纳米粒子进行SPR检测.
研究的目的:
- 用Nicoya的OpenSPR技术描述描述蛋白质与蛋白质相互作用的方法.
- 为了证明OpenSPR的应用,分析与TLR4和RAGE的Procathepsin L (pCTS-L) 的结合动力学和亲缘关系.
- 突出OpenSPR的优势,包括其成本效益和用户友好性.
主要方法:
- 使用了Nicoya Lifesciences第一代开放式SPR仪器,具有1通道检测.
- 采用金纳米粒子作为SPR测量的传感表面.
- 在分析剂结合后,对联联体的吸收峰值波长的测量变化.
- 描述了 procathepsin L (pCTS-L) 和模式识别受体 (TLR4和RAGE) 之间的相互作用.
主要成果:
- OpenSPR成功地检测和量化了实时的配体-分析剂相互作用.
- 该方法允许确定结合动力学和亲和力.
- 该研究成功地描述了pCTS-L与TLR4和RAGE的相互作用.
结论:
- 尼科亚OpenSPR为无标签的蛋白质与蛋白质相互作用分析提供了一个成本效益高且易于使用的替代方案.
- 使用金纳米颗粒的基于纳米技术的方法提供了敏感的检测.
- 开放SPR可以实时深入描述分子相互作用.
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