Mapping of MeLiM melanoma combining ICP-MS and MALDI-MSI methods
Lucie Vaníčková1, Tomáš Do2, Markéta Vejvodová3
1Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, CZ-61300 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, CZ-61200 Brno, Czech Republic; Department of Forest Botany, Dendrology and Geobiocenology, Faculty of Forest and Wood Technology, Mendel University in Brno, Zemedelska 1665/1, CZ-61300 Brno, Czech Republic.
Abstract:
Here we developed a powerful tool for comprehensive data collection and mapping of molecular and elemental signatures in the Melanoma-bearing Libechov Minipig (MeLiM) model. The combination of different mass spectrometric methods allowed for detail investigation of specific melanoma markers and elements and their spatial distribution in tissue sections. MALDI-MSI combined with HPLC-MS/MS analyses resulted in identification of seven specific proteins, S100A12, CD163, MMP-2, galectin-1, tenascin, resistin and PCNA that were presented in the melanoma signatures. Furthermore, the ICP-MS method allowed for spatial detection of zinc, calcium, copper, and iron elements linked with the allocation of the specific binding proteins.
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