液态-液态晶相分离 (LLCPS) 和液态-液态相分离 (LLPS) 在粉状纤维结合体系统中的竞争
Milad Radiom1, Raffaele Mezzenga1
1Department of Health Sciences and Technology, ETH Zürich, Zürich, 8092, Switzerland.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|January 28, 2026
概括
粉样纤维主要形成液体-液体晶相分离 (LLCPS),但pH值的变化可以诱导液体-液体相分离 (LLPS). 这项研究阐明了粉样纤维的组织和控制.
科学领域:
- 结合体物理学的结合体物理
- 生物物理学的生物物理.
- 材料科学是一种材料科学.
背景情况:
- 粉样纤维是蛋白质聚合物,在生物系统和疾病中形成凝结阶段.
- 两个主要的分离途径,液态-液态相分离 (LLPS) 和液态-液态晶体相分离 (LLCPS),可以形成这些相.
- 在粉样纤维素分散中的LLPS和LLCPS之间的相互作用尚未完全理解.
研究的目的:
- 为了研究粉样纤维分散的支配阶段分离路径.
- 为了确定溶液条件,特别是pH值对粉样纤维细胞相位行为的影响.
- 建立一个框架来控制粉样纤维的组织.
主要方法:
- 研究了酶和β-乳球蛋白粉样纤维.
- 在一系列的pH条件下研究了相分离行为.
- 分析了阴性凝结物的形成及其顺序.
主要成果:
- 粉样纤维主要经历LLCPS.
- 增加pH触发了从LLCPS到LLPS的过渡.
- 在同电点附近,凝结物形成没有连贯的内马学顺序,表明主导分离路径的pH取决于变化.
- 在低电荷密度下,人体吸引力占主导地位,而不是热带吸引力.
结论:
- 粉样纤维中的LLCPS和LLPS是不同的,可以分离的过程.
- 溶液的pH值是控制粉样纤维组织的关键因素.
- 了解LLCPS和LLPS之间的竞争可以阐明体内纤维组织,并指导基于粉样蛋白的材料的设计.
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