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Updated: Jan 31, 2026

Generation of Two-color Antigen Microarrays for the Simultaneous Detection of IgG and IgM Autoantibodies

Generation of Two-color Antigen Microarrays for the Simultaneous Detection of IgG and IgM Autoantibodies

Published on: September 15, 2016

通过光链捕获与NanoRP-LC-MS相结合,对多克隆IgG,IgA和IgM进行FC剖析

Yue Li¹, Sabrina Reusch¹, Bianca D M van Tol¹

¹Centre for Proteomics and Metabolomics, Leiden University Medical Centre, PO Box 9600, Leiden, 2300 RC, The Netherlands.

|January 30, 2026

概括

这项研究引入了一种用于分析人体血中抗体Fc-proteoforms的新方法. 该技术可以精确地表征免疫球蛋白G (IgG),IgA1和免疫球蛋白M (IgM) Fc域和相关蛋白质.

科学领域:

免疫学免疫学免疫学
分析化学分析化学
生物化学生物化学

背景情况:

抗体Fc域蛋白质形式对治疗性和内源性抗体都决定了效应器功能.
虽然免疫球蛋白G (IgG) Fc蛋白质形式使用质谱学 (MS) 进行了良好的特征分析,但由于结构复杂性,IgA1和IgM Fc域分析仍然具有挑战性,通常仅限于水平数据.

研究的目的:

开发一种敏感和精确的方法,用于同时分析IgG,IgA1和IgM Fc域及其相关组件.
为了从小体积的血中进行全面的Fc-proteoform分析.

主要方法:

一种新的工作流程,结合了光链亲和度捕获,同型特异性链区域消化和完整的Fc域纳米液体染色体质谱 (nanoRP-LC-MS).
对人体血样本的分析,以评估方法的性能,并提供蛋白质形式的见解.

主要成果:

开发的方法显示了高灵敏度和精度的同时Fc域分析.
从仅10μL的血中,成功分析了IgG,IgA1和IgM Fc域,以及诸如连接 (J) 链和CD5L之类的相关组件.
提供了单个捐赠人样本中Fc蛋白质的全面概述.

结论:

新的工作流显著提高了超出IgG的复杂抗体Fc域的表征能力.
允许在单个分析中对多个抗体同型及其相关蛋白质进行详细的蛋白形状分析.
为了解生物样本中的抗体功能和异质性提供了强大的工具.

关键词:

聚克隆性免疫球蛋白是一种多克隆性免疫球蛋白.抗体异型类型的抗体.葡萄糖酶化是什么? 葡萄糖酶化是什么?质谱测量质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量中上阶段的分析.翻译后的修改翻译后的修改

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