A sulfatide-centered ultra-high-resolution magnetic resonance MALDI imaging benchmark dataset for MS1-based lipid annotation tools
Spatial omics techniques are indispensable for studying complex biological systems and for the discovery of spatial biomarkers. While several current matrix-assisted laser desorption/ionization mass spectrometry imaging (MSI) instruments are capable of localizing numerous metabolites at high spatial...
Gespeichert in:
| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
09 December 2025
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| In: |
GigaScience
Year: 2025, Jahrgang: 14, Pages: 1-9 |
| ISSN: | 2047-217X |
| DOI: | 10.1093/gigascience/giaf150 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/gigascience/giaf150
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| Verfasserangaben: | Lars Gruber, Stefan Schmidt, Thomas Enzlein, and Carsten Hopf |
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| 520 | |a Spatial omics techniques are indispensable for studying complex biological systems and for the discovery of spatial biomarkers. While several current matrix-assisted laser desorption/ionization mass spectrometry imaging (MSI) instruments are capable of localizing numerous metabolites at high spatial and spectral resolution, most MSI data are acquired at the MS1 level only. Assigning molecular identities based on MS1 data presents significant analytical and computational challenges, as the inherent limitations of MS1 data preclude confident annotations beyond the sum formula level.To enable future advancements of computational lipid annotation tools, well-characterized benchmark—or ground-truth—datasets are crucial, which exceed the scope of synthetic data or data derived from mimetic tissue models. To this end, we provide 2 sulfatide-centered, biology-driven magnetic resonance MSI (MR-MSI) datasets at different mass resolving powers that characterize lipids in a mouse model of human metachromatic dystrophy. These data include an ultra-high-resolution (R ∼1,230,000) quantum cascade laser mid-infrared imaging-guided MR-MSI dataset that enables isotopic fine structure analysis and therefore enhances the level of confidence substantially. To highlight the usefulness of the data, we compared 118 manual sulfatide annotations with the number of decoy database-controlled sulfatide annotations performed in Metaspace (67 at a false discovery rate <10%).Overall, our datasets can be used to benchmark annotation algorithms, validate spatial biomarker discovery pipelines, and serve as a reference for future studies that explore sulfatide metabolism and its spatial regulation. | ||
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| 700 | 1 | |a Enzlein, Thomas |e VerfasserIn |0 (DE-588)1353427064 |0 (DE-627)1914650964 |4 aut | |
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