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Spatial Probabilistic Mapping of Metabolite Ensembles in Mass Spectrometry Imaging

Abu Sammour, D.; Cairns, J. L.; Boskamp, T.; Guevara, C. R.; Panitz, V.; Sadik, A.; Cordes, J.; Marsching, C.; Friedrich, M.; Platten, M.; Wolf, I.; von Deimling, A.; Opitz, C. A.; Wick, W.; Hopf, C.

2021-10-28 bioinformatics
10.1101/2021.10.27.466114 bioRxiv
Show abstract

Mass spectrometry imaging (MSI) vows to enable simultaneous spatially-resolved investigation of hundreds of metabolites in tissue sections, but it still relies on poorly defined ion images for data interpretation. Here, we outline moleculaR, a computational framework (https://github.com/CeMOS-Mannheim/moleculaR) that introduces probabilistic mapping and point-for-point statistical testing of metabolites in tissue. It enables collective molecular projections and consequently spatially-resolved investigation of ion milieus, lipid pathways or user-defined biomolecular ensembles within the same image.

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