High-resolution tandem mass spectrometer with liquid chromatography (UHPLC-QTOF-MS)

所提出的高分辨率混合质谱仪是现有UHPLC-QTOF-MS系统的替代品，用于非靶向代谢物组分析，即所谓的代谢物指纹分析。该仪器由哥廷根分子生物科学中心（GZMB）植物生物化学系的代谢组和脂质组分析服务部门操作。该服务部门为GZMB，Georg-August-University的部门以及外部学术合作伙伴提供了全面的小分子分析基础设施，并提供了有针对性和非有针对性的方法。非定向代谢组分析提供了生物或非生物胁迫后或作为遗传或发育变化的结果的生物体的代谢状态的全面视图。在这种情况下，代谢物指纹图谱允许识别和表征代谢标志物或途径，由于分析的深度大，这些代谢标志物或途径在功能上与相应的影响因素相关。无向代谢组分析的结果也被证明是非常有价值的产生工作假设和开发新的科学问题。建议的高分辨率混合质谱仪也将用于进一步发展我们的离体代谢组学方法的酶的功能注释。这种无假设的方法结合了蛋白质生物化学和代谢物指纹识别，以确定未表征的酶的底物-产物对来描述其生理功能。此外，我们计划使用新的UHPLC-QTOF-MS系统，通过建立非靶向脂质组分析平台来扩展我们在脂质组分析方面的专业知识。取代UHPLC-QTOF-MS系统将使我们能够进一步开发用于非靶向代谢组和脂质组分析的复杂方法，并将其提供给科学界。

The proposed high-resolution hybrid mass spectrometer is a replacement for the existing UHPLC-QTOF-MS system for non-targeted metabolome analysis, so-called metabolite fingerprinting. The instrument is operated by the service unit Metabolome and Lipidome Analysis of the Department of Plant Biochemistry at the Göttingen Center for Molecular Biosciences (GZMB). The service unit provides a comprehensive infrastructure for the analysis of small molecules to the departments of the GZMB, the Georg-August-University, but also to external academic cooperation partners and offers targeted and non-targeted approaches. Undirected metabolome analysis provides a comprehensive view of the metabolic state of an organism after biotic or abiotic stress or as a consequence of genetic or developmental changes. In this context, metabolite fingerprinting allows the identification and characterization of metabolic markers or pathways that are functionally related to the corresponding influencing factors due to the large depth of analysis. The results of the undirected metabolome analysis have also proven to be very valuable for generating working hypotheses and developing new scientific questions. The proposed high-resolution hybrid mass spectrometer will also be used to further develop our ex vivo metabolomics approach for functional annotation of enzymes. This hypothesis-free approach combines protein biochemistry and metabolite fingerprinting to identify substrate-product pairs for uncharacterized enzymes to describe their physiological functions. In addition, we plan to use the new UHPLC-QTOF-MS system to expand our expertise in lipidome analysis by establishing a platform for non-targeted lipidome analysis. This will complement the existing method for targeted analysis and enable the identification of previously unknown lipid markers.The replacement of the UHPLC-QTOF-MS system will enable us to further develop sophisticated methods for non-targeted metabolome and lipidome analysis and make them available to the scientific community.