相关实验视频

Updated: Jan 8, 2026

Detecting Amyloid-β Accumulation via Immunofluorescent Staining in a Mouse Model of Alzheimer's Disease

Detecting Amyloid-β Accumulation via Immunofluorescent Staining in a Mouse Model of Alzheimer's Disease

Published on: April 19, 2021

刚果红色衍生共价蛋白质原型化传感器用于阿尔茨海默氏病中的粉样沉积物

Huan Feng^1,2,3, Rui Gao^1,3, Fangliang Guo^1,4

¹State Key Laboratory of Medical Proteomics, National Chromatographic R. & A. Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.

|December 16, 2025

概括

研究人员发现了一种使用刚果红色染料和酸盐缓冲剂检测阿尔茨海默病 (AD) 组织中的粉样蛋白的新方法. 这种共价传感器能够精确成像,隔离和分析粉样沉积物.

科学领域:

生物化学生物化学
神经科学是一个神经科学.
材料科学材料科学材料科学

背景情况:

刚果红色 (CR) 是用于粉样沉积的标准体化学染料.
在CR中,酸结合通常被认为是稳定的.
目前用于粉样蛋白分析的方法在特异性和范围上有局限性.

研究的目的:

开发一种用于粉样蛋白检测和表征的新型共价传感器.
为了利用CR中亚键的活性来实现粉样蛋白生物结合.
为了使阿尔茨海默病 (AD) 模型中的粉样沉积物能够进行先进的成像,丰富和蛋白型定型.

主要方法:

酸盐缓冲器激活的粉样蛋白的共价修饰使用刚果红色.
紫外线光诱导的同质化,以增强标签.
基于CR的共价传感器的开发,用于选择性检测和微解剖.
基因手柄用于点击化学辅助的丰富.
通过LC-MS/MS进行丰富的粉样蛋白聚合物的蛋白质组学分析.

主要成果:

中性酸盐缓冲器激活CR中的键,在环境温度下对化修饰粉样蛋白.
酸在酸缓冲体中的酸触发了粉样蛋白生物结合,通过UV诱导的异构增强.
从AD小鼠大脑组织中选择性检测和微剖析粉样质沉积物.
点击化学启用丰富和LC-MS/MS蛋白型定型确定了Tau和ApoE作为粉样蛋白相互作用体.

结论:

一个酸盐激活的基共价传感器被建立用于粉样蛋白检测.
这种新的化学特性使得粉样蛋白沉积物的选择性成像,剖析和蛋白型定型成为可能.
该传感器有助于更深入地了解AD中的粉样蛋白聚合物中的蛋白质相互作用.

关键词:

阿尔茨海默氏症是阿尔茨海默氏症的一种疾病.氨基化物氨基化物这是一个阿佐佐和阿佐.酸是一种酸.一个共价传感器传感器.蛋白质类型的形成.

更多相关视频

Imaging Amyloid Tissues Stained with Luminescent Conjugated Oligothiophenes by Hyperspectral Confocal Microscopy and Fluorescence Lifetime Imaging

Imaging Amyloid Tissues Stained with Luminescent Conjugated Oligothiophenes by Hyperspectral Confocal Microscopy and Fluorescence Lifetime Imaging

Published on: October 20, 2017

Novel Atomic Force Microscopy Based Biopanning for Isolation of Morphology Specific Reagents against TDP-43 Variants in Amyotrophic Lateral Sclerosis

Novel Atomic Force Microscopy Based Biopanning for Isolation of Morphology Specific Reagents against TDP-43 Variants in Amyotrophic Lateral Sclerosis

Published on: February 12, 2015

相关概念视频

Amyloid Fibrils

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...

Amyloid Fibrils

Amyloid Fibrils