FN Archimer Export Format PT C TI Maldi mass spectrometry imaging applied to small molecules localization BT AF GUITTON, Yann MONDEGUER, Florence NICOLAU, Elodie ROYER, Florence HILBERT, Jean-Louis FOURNIER, Isabelle WISZTORSKI, Maxence AS 1:1;2:3;3:3;4:3;5:1;6:2;7:2; FF 1:;2:PDG-ODE-LITTORAL-PHYC;3:PDG-ODE-LITTORAL-PHYC;4:PDG-RBE-LEADNC;5:;6:;7:; C1 INRA, USTL UMR SADV 1281, Stress Abiotiques et Différenciation des Végétaux Cultivés, Université Lille Nord de France, Lille 1, SN2, F-59655 Villeneuve d’Ascq, France Université Lille Nord de France, MALDI Imaging Team, Laboratoire de Spectrométrie de masse Biologique, Fondamentale, Appliquée, EA-4550, Lille 1, SN3, F-59655 Villeneuve d’Ascq, France IFREMER , Laboratoire Phycotoxines, Rue de l’ile d’Yeu, BP 21105 44311 Nantes, France C2 INRA, FRANCE UNIV LILLE, FRANCE IFREMER, FRANCE SI NANTES SAINT VINCENT SE PDG-ODE-LITTORAL-PHYC PDG-RBE-LEADNC UR https://archimer.ifremer.fr/doc/00179/29041/27479.pdf LA English DT Poster AB MALDI Mass Spectrometry Imaging (MALDI-MSI) is a two-dimensional MALDI mass spectrometric technique used to visualize the spatial distribution of a large variety of biological molecules (from small metabolites to large proteins) without extraction, purification, separation or labelling of biological samples. Since its introduction by Caprioli et al in 1997, it has become one of the most important molecular histology methods for biomarker hunting and for understanding the spatial distribution of biomolecules in various tissues. MALDI-MSI is thus ideal for complementing the expanding field of metabolomics. Despite the fact that MALDI-MSI have been very successfully applied in divers studies (even in clinical applications) its use remains far from routine, and there is still a need to adapt protocols to suit specific tissues4 or metabolites. Here we describe the methodology of MALDI-MSI with examples taken from applications in plant (Cichorium intybus) and in seashell (Mytilus edulis). PY 2012 PD MAY ID 29041 ER EF