相关实验视频

Updated: Jun 26, 2026

Isolation of Labile Multi-protein Complexes by in vivo Controlled Cellular Cross-Linking and Immuno-magnetic Affinity Chromatography

Isolation of Labile Multi-protein Complexes by in vivo Controlled Cellular Cross-Linking and Immuno-magnetic Affinity Chromatography

Published on: March 9, 2010

在复杂矩阵中对α-2-宏球蛋白进行无标签的动态单分子检测

Qichuan Jiang¹, Qiang Zeng², Haiyang Yu³

¹Otolaryngology Head and Neck surgery Department, the First Affiliated Hospital of JinZhou Medical University, JinZhou 121001, China.

|September 9, 2025

概括

我们开发了一种新的无标签的动态单分子传感方法,用于准确检测α-2-宏球蛋白 (A2M). 这种敏感的技术为在复杂的生物样本 (如血清) 中量化A2M提供了一个有希望的工具.

科学领域:

生物标志物发现发现
分析化学分析化学
分子诊断学分子诊断

背景情况:

阿尔法-2-宏球蛋白 (A2M) 是炎症,免疫,凝血和纤维化,神经退行和癌症等疾病的关键生物标志物.
精确的A2M量化是具有挑战性的,因为它的动态性质,低丰度变化,以及其他等离子体蛋白的干扰.

研究的目的:

引入一种新的无标签动态单分子传感 (LFDSMS) 战略,用于敏感和特定的A2M检测.
克服复杂生物流体中A2M量化现有方法的局限性.

主要方法:

使用无标签的动态单分子传感 (LFDSMS) 平台实时监测,可逆抗体-A2M相互作用.
优化了缓冲离子强度,以增强用于信号放大的结合解离动力学.
使用表面固定抗体用于特定捕获和检测A2M.

主要成果:

在未稀释血清中达到25 ± 2 ng/mL的检测极限,在细胞培养基中达到29 ± 4 ng/mL.
即使在复杂的生物矩阵中,A2M检测也表现出高特异性.
与ELISA (R2 = 0.988) 显示出良好的相关性,证实了该方法的可靠性.

结论:

LFDSMS为A2M量化提供了一种敏感,特定和强大的方法.
这种技术在临床环境中对定量生物标志物分析具有重大潜力.
优化的LFDSMS平台解决了A2M测量的当前挑战.

关键词:

阿尔法-2-巨型球蛋白生物标志物概况分析动态单分子传感感应.运动过的电影过.没有标签的检测检测.

更多相关视频

Analyzing Dynamic Protein Complexes Assembled On and Released From Biolayer Interferometry Biosensor Using Mass Spectrometry and Electron Microscopy

Analyzing Dynamic Protein Complexes Assembled On and Released From Biolayer Interferometry Biosensor Using Mass Spectrometry and Electron Microscopy

Published on: August 6, 2018

Author Spotlight: Characterization of Low-Affinity Protein Interactions in Solution Using MassFluidix Technology

Author Spotlight: Characterization of Low-Affinity Protein Interactions in Solution Using MassFluidix Technology

Published on: January 26, 2024

相关概念视频

Matrix-Assisted Laser Desorption Ionization (MALDI)

Matrix-Assisted Laser Desorption Ionization (MALDI)

Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI is an ionization technique, widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.The analyte of interest, a biomolecule or a mixture of biomolecules, is mixed with a suitable matrix...