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Introduction <p>The use of large, non-sample specific metabolite reference libraries often results in high proportions of false positive annotations in untargeted metabolomics.</p> Objective <p>This study aimed to measure and curate a library of polar metabolites and lipids present in cardiac microtissues.</p> Results <p>Untargeted ultra-high performance liquid chromatography-coupled mass spectrometry measurements of cardiac microtissue intracellular extracts were annotated by comparison against four spectral databases and a retention time library. The annotations were combined to create a library of 313 polar metabolites and 1004 lipids.</p> Conclusions <p>The curated library will facilitate higher confidence metabolite annotation in mass spectrometry-based untargeted metabolomics of cardiac microtissues.</p>

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Mass spectrometry-based characterisation of the cardiac microtissue metabolome and lipidome

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月21日

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  • Tara J. Bowen,
  • Andrew R. Hall,
  • Andrew D. Southam,
  • Ossama Edbali,
  • Ralf J. M. Weber,
  • Amanda Wilson,
  • Amy Pointon,
  • Mark R. Viant

摘要

Introduction

The use of large, non-sample specific metabolite reference libraries often results in high proportions of false positive annotations in untargeted metabolomics.

Objective

This study aimed to measure and curate a library of polar metabolites and lipids present in cardiac microtissues.

Results

Untargeted ultra-high performance liquid chromatography-coupled mass spectrometry measurements of cardiac microtissue intracellular extracts were annotated by comparison against four spectral databases and a retention time library. The annotations were combined to create a library of 313 polar metabolites and 1004 lipids.

Conclusions

The curated library will facilitate higher confidence metabolite annotation in mass spectrometry-based untargeted metabolomics of cardiac microtissues.