高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (11): 20240325.doi: 10.7503/cjcu20240325

• 研究论文 • 上一篇    下一篇

等离子体复合材料辅助小分子代谢物的质谱半定量分析及鉴定

曹婷, 舒伟康(), 万晶晶()   

  1. 华东师范大学化学与分子工程学院,上海 200241
  • 收稿日期:2024-07-01 出版日期:2024-11-10 发布日期:2024-09-25
  • 通讯作者: 舒伟康 E-mail:wkshu@chem.ecnu.edu.cn;jjwan@chem.ecnu.edu.cn
  • 作者简介:万晶晶, 女, 博士, 教授, 主要从事临床质谱多组学技术开发及应用方面的研究. E-mail: jjwan@chem.ecnu.edu.cn
  • 基金资助:
    国家自然科学基金(22122404)

Plasmonic Composites Aid Semi-quantitative Analysis and Identification of Low-molecular-weight Metabolites by Mass Spectrometry

CAO Ting, SHU Weikang(), WAN Jingjing()   

  1. School of Chemistry and Molecular Engineering,East China Normal University,Shanghai 200241,China
  • Received:2024-07-01 Online:2024-11-10 Published:2024-09-25
  • Contact: SHU Weikang E-mail:wkshu@chem.ecnu.edu.cn;jjwan@chem.ecnu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22122404)

摘要:

利用枝状介孔二氧化硅纳米球(DMSN)作为载体, 将金、 银纳米颗粒均匀负载在其表面, 制备了DMSN@Ag/Au复合材料, 并将其作为基质辅助激光解吸离子化(MALDI)基质. 该基质可实现高灵敏度小分子代谢物分析, 检测限为0.005 mg/mL. 该基质具有较好的检测重现性, 并提供自身的Au+信号作为信号参比, 从而提高定量分析准确度. 此外, DMSN@Ag/Au可诱导分析物发生Ag+加和, 辅助代谢物鉴定. 该基质有望作为新一代的多功能MALDI基质, 为临床质谱分析提供新的思路.

关键词: 基质辅助激光解吸/电离质谱, 小分子检测, 枝状介孔二氧化硅纳米球, 等离子体材料

Abstract:

DMSN@Ag/Au composites, with DMSN(dendritic mesoporous silica nanosphere), as the support and Au/Ag nanoparticles homogeneously loading on the surface, were employed as MALDI(matrix-assisted laser desorption/ionization) matrices. These composites enable highly sensitive MALDI metabolic analysis with a detection limit of 0.005 mg/mL. Moreover, these composites demonstrated good reproducibility in detection and provided an intrinsic Au+ signal as a reference to enhance the accuracy of quantitative analysis. Additionally, DMSN@Ag/Au facilitated Ag+ addition to the analyte and assisted in metabolite identification process. The composites are expected to serve as a new generation of multifunctional MALDI matrix and provide new ideas for clinical mass spectrometry analysis.

Key words: Matrix-assisted laser desorption/Ionization mass spectrometry, Low-molecular-weight metabolites detection, Dendritic mesoporous silica nanosphere, Plasmonic material

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