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胺基和多基补充量身定制的金属有机框架,具有增强的甘氨酸亲和力,用于高效的甘氨酸蛋白质组分析
Zi Yang1, Wei Gan2, Lunzhi Dai3
1Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
ACS applied materials & interfaces
|December 25, 2023
概括
研究人员开发了一种新的金属有机框架,U6N/Pv@Glc,用于增强糖丰富. 这种材料可以改善生物样本中的糖蛋白分析,有助于发现疾病生物标志物.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 材料科学 材料科学 材料科学
背景情况:
- 蛋白质糖化对生物调节至关重要,但由于糖蛋白异质性和低丰度,研究具有挑战性.
- 目前用于糖丰富的水友互动液体色谱 (HILIC) 方法在性能上有局限性.
- 有效的丰富对于基于质谱的糖蛋白质组分析至关重要.
研究的目的:
- 理性地设计和合成一种用于改善糖丰富的新材料.
- 评估材料在敏感性,选择性和覆盖率方面的性能.
- 为了证明其在分析人类血清糖蛋白质组学及其对上下MS的潜力中的应用.
主要方法:
- 合理设计和合成一个金属有机框架 (U6N/Pv@Glc) 的胺和多氧基功能.
- 评估材料的超性和甘氨酸亲和力.
- 从标准葡萄糖蛋白和人血清样本中对葡萄糖的丰富和质谱分析.
- 使用IgG/BSA混合物的检测极限和选择性的评估.
主要成果:
- 该U6N/Pv@Glc材料表现出超性和增强的糖亲和力.
- 丰富后观察到糖覆盖率的显著增加.
- 实现了极低的检测极限 (0.05 fmol μL-1) 和高选择性 (1:4000).
- 对人体血清进行的深入分析显示了379个糖和247个完整的糖,其中1577个是特定于该位点的N-糖.
- 该材料显示与捕获未消化的糖蛋白相容,用于上下MS分析.
结论:
- 与传统方法相比,开发的U6N/Pv@Glc材料在糖丰富方面提供了卓越的性能.
- 这种新材料对全面的葡萄糖蛋白质组分析具有重大前景,包括在2型糖尿病等疾病中发现生物标志物.
- 它的多功能性延伸到自上而下的质谱学,扩大了其在糖化学研究中的适用性.
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