多重复合抗体葡萄糖化分析使用双酶消化和液体染色学-三重四极质谱法方法
Yu-Hsuan Cheng1, Chih-Hsin Lee2, San-Yuan Wang3
1Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan.
Molecular & cellular proteomics : MCP
|December 28, 2023
概括
一种新的分析方法准确地描述了人体血中IgG,IgA和IgM同型的抗体糖化. 这种敏感的平台可以进行详细的幽默性免疫反应调查.
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:
- 抗体糖化对免疫调节和受体结合至关重要.
- 以前的研究主要集中在免疫球蛋白G (IgG) 上,因为其他同型的分析难度很大.
- 需要一个敏感的平台来分析跨多个抗体同型的糖化.
研究的目的:
- 开发和验证一种敏感的分析工作流程,用于表征抗体糖基化.
- 为了使免疫球蛋白G (IgG),免疫球蛋白A (IgA) 和免疫球蛋白M (IgM) 的同时进行分析.
- 为在临床研究中提供详细的幽默免疫概况的工具.
主要方法:
- 使用抗体-轻链亲和珠用于从小血体积 (16μL) 中净化IgG,IgA和IgM.
- 采用双酶消化 (素和Glu-C) 进行糖和替代生成.
- 实施了超高性能液态色谱-三重四极质谱与稳定同位素标记的内部量化标准.
主要成果:
- 该平台的目标是95个糖和8个IgG,IgA和IgM的替代.
- 经过证明的高灵敏度和特异性,具有出色的校准曲线适配 (R2 > 0.959).
- 获得了高精度 (RSD<29.6%) 并成功地将该方法应用于人体血样本.
结论:
- 开发的分析工作流是敏感和准确的,用于免疫球蛋白糖化定位.
- 这种方法克服了以前的分析挑战,允许全面的同型分析.
- 该平台适用于临床研究和推进幽默免疫研究.
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