相关实验视频

Updated: May 5, 2026

Low Molecular Weight Protein Enrichment on Mesoporous Silica Thin Films for Biomarker Discovery

Low Molecular Weight Protein Enrichment on Mesoporous Silica Thin Films for Biomarker Discovery

Published on: April 17, 2012

一个合理设计的 MALDI-TOF MS 探针,用于快速定量分析氧化酶活性

Jiarui Li¹, Shuai Tang^1,2, Hao Wang²

¹State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China. guoxh@jlu.edu.cn.

Analytical methods : advancing methods and applications

|June 27, 2025

概括

一个新的探测器,QF,使用MALDI-TOF MS.能够快速准确地量化碳酸酶 (CES) 活性. 这种方法有助于检测肝细胞癌 (HCC) 生物标志物,并开发新的CES向药物.

科学领域:

生物化学生物化学
分析化学分析化学
生物标志物发现发现

背景情况:

碳氧乙酶 (CES) 是一种关键的肝脏酶,参与了异生物代谢.
CES的升级与肝细胞癌 (HCC) 有关,这给诊断带来了挑战.
精确量化CES活动对于疾病诊断和药物开发至关重要.

研究的目的:

开发一种用于快速和定量分析CES活动的新型探测器.
建立一种敏感的方法来检测复杂生物样本中的CES生物标志物.
为了促进CES抑制剂查和药物开发.

主要方法:

开发一个使用基质水解策略的矩阵辅助激光脱/电离飞行时间质谱 (MALDI-TOF MS) 探测器 (QF).
加入一个胺基组用于酶识别和一个氨酸标签用于增强电离.
通过产品与基质的强度比,直接量化CES活动在MALDI-TOF MS.中.

主要成果:

在没有内部标准的情况下,QF探测使CES活动的直接和准确量化成为可能.
该方法展示了简单性,高通量能力和精度.
在CES活动量化,抑制剂查和细胞溶解物中检测方面成功应用.

结论:

开发的QF探头为快速检测CES活动提供了有价值的工具.
这种方法可以显著提高CES相关疾病的诊断准确性,如HCC.
该方法支持CES药物开发和查方面的进展.

更多相关视频

Fast Enzymatic Processing of Proteins for MS Detection with a Flow-through Microreactor

Fast Enzymatic Processing of Proteins for MS Detection with a Flow-through Microreactor

Published on: April 6, 2016

An Efficient Sample Preparation Method to Enhance Carbohydrate Ion Signals in Matrix-assisted Laser Desorption/Ionization Mass Spectrometry

An Efficient Sample Preparation Method to Enhance Carbohydrate Ion Signals in Matrix-assisted Laser Desorption/Ionization Mass Spectrometry

Published on: July 29, 2018

相关概念视频

MALDI-TOF Mass Spectrometry

MALDI-TOF Mass Spectrometry

Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...