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Delcourt V, Franck J, Quanico J, Gimeno JP, Wisztorski M, Raffo-Romero A, Kobeissy F, Roucou X, Salzet M, Fournier I. Spatially-Resolved Top-down Proteomics Bridged to MALDI MS Imaging Reveals the Molecular Physiome of Brain Regions. Mol Cell Proteomics 2017; 17:357-372. [PMID: 29122912 PMCID: PMC5795397 DOI: 10.1074/mcp.m116.065755] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 10/11/2017] [Indexed: 12/14/2022] Open
Abstract
Tissue spatially-resolved proteomics was performed on 3 brain regions, leading to the characterization of 123 reference proteins. Moreover, 8 alternative proteins from alternative open reading frames (AltORF) were identified. Some proteins display specific post-translational modification profiles or truncation linked to the brain regions and their functions. Systems biology analysis performed on the proteome identified in each region allowed to associate sub-networks with the functional physiology of each brain region. Back correlation of the proteins identified by spatially-resolved proteomics at a given tissue localization with the MALDI MS imaging data, was then performed. As an example, mapping of the distribution of the matrix metallopeptidase 3-cleaved C-terminal fragment of α-synuclein (aa 95–140) identified its specific distribution along the hippocampal dentate gyrus. Taken together, we established the molecular physiome of 3 rat brain regions through reference and hidden proteome characterization.
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Affiliation(s)
- Vivian Delcourt
- From the ‡Laboratoire Proteomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) - INSERM U1192, Université Lille 1, Bât SN3, 1 étage, Cité Scientifique, F-59655 Villeneuve d'Ascq Cedex, France.,§Département de Biochimie Lab. Z8-2001, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Canada
| | - Julien Franck
- From the ‡Laboratoire Proteomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) - INSERM U1192, Université Lille 1, Bât SN3, 1 étage, Cité Scientifique, F-59655 Villeneuve d'Ascq Cedex, France
| | - Jusal Quanico
- From the ‡Laboratoire Proteomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) - INSERM U1192, Université Lille 1, Bât SN3, 1 étage, Cité Scientifique, F-59655 Villeneuve d'Ascq Cedex, France
| | - Jean-Pascal Gimeno
- From the ‡Laboratoire Proteomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) - INSERM U1192, Université Lille 1, Bât SN3, 1 étage, Cité Scientifique, F-59655 Villeneuve d'Ascq Cedex, France
| | - Maxence Wisztorski
- From the ‡Laboratoire Proteomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) - INSERM U1192, Université Lille 1, Bât SN3, 1 étage, Cité Scientifique, F-59655 Villeneuve d'Ascq Cedex, France
| | - Antonella Raffo-Romero
- From the ‡Laboratoire Proteomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) - INSERM U1192, Université Lille 1, Bât SN3, 1 étage, Cité Scientifique, F-59655 Villeneuve d'Ascq Cedex, France
| | - Firas Kobeissy
- ¶Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Xavier Roucou
- §Département de Biochimie Lab. Z8-2001, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Canada
| | - Michel Salzet
- From the ‡Laboratoire Proteomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) - INSERM U1192, Université Lille 1, Bât SN3, 1 étage, Cité Scientifique, F-59655 Villeneuve d'Ascq Cedex, France;
| | - Isabelle Fournier
- From the ‡Laboratoire Proteomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) - INSERM U1192, Université Lille 1, Bât SN3, 1 étage, Cité Scientifique, F-59655 Villeneuve d'Ascq Cedex, France;
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