使用微凝稳定皮克林液晶在水中的乳液光学检测蛋白质
Shikha Aery1,2, Jérôme J Crassous2, Abhijit Dan1,3
1Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India.
Langmuir : the ACS journal of surfaces and colloids
|January 3, 2025
概括
我们开发了一种新的液晶 (LC) 生物传感器,使用微凝稳定液滴进行无标签蛋白质检测. 该平台为生物分子相互作用研究提供了更高的灵敏度和稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
- 分析化学 分析化学
背景情况:
- 开发敏感且无标签的生物传感平台对于生物分子检测至关重要.
- 液晶 (LC) 滴滴为传感应用提供独特的光学特性.
- 在水性环境中稳定LC液滴是一个重大挑战.
研究的目的:
- 创建一个基于液晶的新型传感平台,用于简单,无标签地检测水中的蛋白质.
- 为了利用微凝稳定Pickering LC滴来增强生物传感能力.
- 研究基于LC滴滴配置转换的蛋白质检测机制.
主要方法:
- 合成的聚N-异烯胺 (PNIPAM) 微凝颗粒用于稳定4--4'-乙烯 (5CB) 液晶液滴.
- 用PNIPAM微凝和表面活性剂 (SDS,DTAB) 涂层的LC液滴用于蛋白质相互作用研究.
- 使用偏振光学显微镜观察LC滴在暴露于蛋白质时的配置过渡 (从辐射到双极).
主要成果:
- 微凝稳定的LC滴在水溶液中表现出皮克林稳定性.
- 蛋白质吸附 (BSA,lyszyme) 在LC滴中诱导了辐射到双极的配置过渡.
- 蛋白质与微凝-表面活性剂接口的相互作用破坏了LC表面的定,导致可检测的光学开关.
- 灵敏度和检测极限受微凝度,表面活性剂电荷,pH值和蛋白质类型的影响.
结论:
- 设计了一种基于Pickering LC的强大而敏感的生物传感器,用于无标签的蛋白质检测.
- 展示了微凝-表面活性剂接口的潜力,以调节生物分子传感的LC滴滴行为.
- 为开发用于界面和生物分子相互作用分析的先进生物传感器开辟了道路.
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