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Wisztorski M, Aboulouard S, Roussel L, Duhamel M, Saudemont P, Cardon T, Narducci F, Robin YM, Lemaire AS, Bertin D, Hajjaji N, Kobeissy F, Leblanc E, Fournier I, Salzet M. Fallopian tube lesions as potential precursors of early ovarian cancer: a comprehensive proteomic analysis. Cell Death Dis 2023; 14:644. [PMID: 37775701 PMCID: PMC10541450 DOI: 10.1038/s41419-023-06165-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 09/08/2023] [Accepted: 09/20/2023] [Indexed: 10/01/2023]
Abstract
Ovarian cancer is the leading cause of death from gynecologic cancer worldwide. High-grade serous carcinoma (HGSC) is the most common and deadliest subtype of ovarian cancer. While the origin of ovarian tumors is still debated, it has been suggested that HGSC originates from cells in the fallopian tube epithelium (FTE), specifically the epithelial cells in the region of the tubal-peritoneal junction. Three main lesions, p53 signatures, STILs, and STICs, have been defined based on the immunohistochemistry (IHC) pattern of p53 and Ki67 markers and the architectural alterations of the cells, using the Sectioning and Extensively Examining the Fimbriated End Protocol. In this study, we performed an in-depth proteomic analysis of these pre-neoplastic epithelial lesions guided by mass spectrometry imaging and IHC. We evaluated specific markers related to each preneoplastic lesion. The study identified specific lesion markers, such as CAVIN1, Emilin2, and FBLN5. We also used SpiderMass technology to perform a lipidomic analysis and identified the specific presence of specific lipids signature including dietary Fatty acids precursors in lesions. Our study provides new insights into the molecular mechanisms underlying the progression of ovarian cancer and confirms the fimbria origin of HGSC.
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Affiliation(s)
- Maxence Wisztorski
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
| | - Soulaimane Aboulouard
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
| | - Lucas Roussel
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
| | - Marie Duhamel
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
| | - Philippe Saudemont
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
| | - Tristan Cardon
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
| | - Fabrice Narducci
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
- Department of Gynecology Oncology, Oscar Lambret Cancer Center, 59020, Lille, France
| | - Yves-Marie Robin
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
- Department of Gynecology Oncology, Oscar Lambret Cancer Center, 59020, Lille, France
| | - Anne-Sophie Lemaire
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
- Department of Gynecology Oncology, Oscar Lambret Cancer Center, 59020, Lille, France
| | - Delphine Bertin
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
- Department of Gynecology Oncology, Oscar Lambret Cancer Center, 59020, Lille, France
| | - Nawale Hajjaji
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France
- Medical Oncology Department, Oscar Lambret Cancer Center, 59020, Lille, France
| | - Firas Kobeissy
- Department of Neurobiology, Center for Neurotrauma, Multiomics & Biomarkers (CNMB), MorehouseSchool of Medicine, Atlanta, GA, 30310, USA
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Eric Leblanc
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France.
- Department of Gynecology Oncology, Oscar Lambret Cancer Center, 59020, Lille, France.
| | - Isabelle Fournier
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France.
- Institut Universitaire de France, 75000, Paris, France.
| | - Michel Salzet
- Univ.Lille, Inserm, CHU Lille, U-1192 - Laboratoire Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000, Lille, France.
- Institut Universitaire de France, 75000, Paris, France.
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Ogrinc N, Kruszewski A, Chaillou P, Saudemont P, Lagadec C, Salzet M, Duriez C, Fournier I. Robot-Assisted SpiderMass for In Vivo Real-Time Topography Mass Spectrometry Imaging. Anal Chem 2021; 93:14383-14391. [PMID: 34670081 DOI: 10.1021/acs.analchem.1c01692] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Mass spectrometry imaging (MSI) has shown to bring invaluable information for biological and clinical applications. However, conventional MSI is generally performed ex vivo from tissue sections. Here, we developed a novel MS-based method for in vivo mass spectrometry imaging. By coupling the SpiderMass technology, that provides in vivo minimally invasive analysis-to a robotic arm of high accuracy, we demonstrate that images can be acquired from any surface by moving the laser probe above the surface. By equipping the robotic arm with a sensor, we are also able to both get the topography image of the sample surface and the molecular distribution, and then and plot back the molecular data, directly to the 3D topographical image without the need for image fusion. This is shown for the first time with the 3D topographic MS-based whole-body imaging of a mouse. Enabling fast in vivo MSI bridged to topography paves the way for surgical applications to excision margins.
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Affiliation(s)
- Nina Ogrinc
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France
| | - Alexandre Kruszewski
- UMR 9189 - CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille, University of Lille, INRIA, CNRS, F-59000 Lille, France
| | - Paul Chaillou
- UMR 9189 - CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille, University of Lille, INRIA, CNRS, F-59000 Lille, France
| | - Philippe Saudemont
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France
| | - Chann Lagadec
- University of Lille, CNRS, Inserm, CHU Lille, Centre Oscar Lambret, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000 Lille, France
| | - Michel Salzet
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France.,Institut Universitaire de France (IUF), Paris 75231, France
| | - Christian Duriez
- UMR 9189 - CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille, University of Lille, INRIA, CNRS, F-59000 Lille, France
| | - Isabelle Fournier
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France.,Institut Universitaire de France (IUF), Paris 75231, France
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Ogrinc N, Saudemont P, Takats Z, Salzet M, Fournier I. Cancer Surgery 2.0: Guidance by Real-Time Molecular Technologies. Trends Mol Med 2021; 27:602-615. [PMID: 33965341 DOI: 10.1016/j.molmed.2021.04.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 03/30/2021] [Accepted: 04/02/2021] [Indexed: 12/14/2022]
Abstract
In vivo cancer margin delineation during surgery remains a major challenge. Despite the availability of several image guidance techniques and intraoperative assessment, clear surgical margins and debulking efficiency remain scarce. For this reason, there is particular interest in developing rapid intraoperative tools with high sensitivity and specificity to help guide cancer surgery in vivo. Recently, several emerging technologies including intraoperative mass spectrometry have paved the way for molecular guidance in a clinical setting. We evaluate these techniques and assess their relevance for intraoperative surgical guidance and how they can transform the future of molecular cancer surgery, diagnostics, patient management and care.
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Affiliation(s)
- Nina Ogrinc
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France
| | - Philippe Saudemont
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France
| | - Zoltan Takats
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France
| | - Michel Salzet
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France; Institut Universitaire de France (IUF), Paris, France.
| | - Isabelle Fournier
- University of Lille, Inserm, CHU Lille, U1192 - Protéomique Réponse Inflammatoire Spectrométrie de Masse - PRISM, F-59000 Lille, France; Institut Universitaire de France (IUF), Paris, France.
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4
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Ogrinc N, Saudemont P, Balog J, Robin YM, Gimeno JP, Pascal Q, Tierny D, Takats Z, Salzet M, Fournier I. Water-assisted laser desorption/ionization mass spectrometry for minimally invasive in vivo and real-time surface analysis using SpiderMass. Nat Protoc 2019; 14:3162-3182. [PMID: 31597965 DOI: 10.1038/s41596-019-0217-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 06/14/2019] [Indexed: 11/09/2022]
Abstract
Rapid, sensitive, precise and accurate analysis of samples in their native in vivo environment is critical to better decipher physiological and physiopathological mechanisms. SpiderMass is an ambient mass spectrometry (MS) system designed for mobile in vivo and real-time surface analyses of biological tissues. The system uses a fibered laser, which is tuned to excite the most intense vibrational band of water, resulting in a process termed water-assisted laser desorption/ionization (WALDI). The water molecules act as an endogenous matrix in a matrix-assisted laser desorption ionization (MALDI)-like scenario, leading to the desorption/ionization of biomolecules (lipids, metabolites and proteins). The ejected material is transferred to the mass spectrometer through an atmospheric interface and a transfer line that is several meters long. Here, we formulate a three-stage procedure that includes (i) a laser system setup coupled to a Waters Q-TOF or Thermo Fisher Q Exactive mass analyzer, (ii) analysis of specimens and (iii) data processing. We also describe the optimal setup for the analysis of cell cultures, fresh-frozen tissue sections and in vivo experiments on skin. With proper optimization, the system can be used for a variety of different targets and applications. The entire procedure takes 1-2 d for complex samples.
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Affiliation(s)
- Nina Ogrinc
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Villeneuve d'Ascq, France
| | - Philippe Saudemont
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Villeneuve d'Ascq, France
- SATT-Nord, Immeuble Central Gare, Lille, France
| | - Julia Balog
- Department of Surgery and Cancer, St Mary's Hospital, Imperial College London, London, UK
| | - Yves-Marie Robin
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Villeneuve d'Ascq, France
- Unité de Pathologie Morphologique et Moléculaire, Centre Oscar Lambret, Lille, France
| | - Jean-Pascal Gimeno
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Villeneuve d'Ascq, France
| | - Quentin Pascal
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Villeneuve d'Ascq, France
- OCR (Oncovet Clinical Research), Eurasanté, Loos, France
| | - Dominique Tierny
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Villeneuve d'Ascq, France
- OCR (Oncovet Clinical Research), Eurasanté, Loos, France
| | - Zoltan Takats
- Department of Surgery and Cancer, St Mary's Hospital, Imperial College London, London, UK
| | - Michel Salzet
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Villeneuve d'Ascq, France.
| | - Isabelle Fournier
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Villeneuve d'Ascq, France.
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5
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Saudemont P, Quanico J, Robin YM, Baud A, Balog J, Fatou B, Tierny D, Pascal Q, Minier K, Pottier M, Focsa C, Ziskind M, Takats Z, Salzet M, Fournier I. Real-Time Molecular Diagnosis of Tumors Using Water-Assisted Laser Desorption/Ionization Mass Spectrometry Technology. Cancer Cell 2018; 34:840-851.e4. [PMID: 30344004 DOI: 10.1016/j.ccell.2018.09.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/08/2018] [Accepted: 09/21/2018] [Indexed: 11/20/2022]
Abstract
Histopathological diagnosis of biopsy samples and margin assessment of surgical specimens are challenging aspects in sarcoma. Using dog patient tissues, we assessed the performance of a recently developed technology for fast ex vivo molecular lipid-based diagnosis of sarcomas. The instrument is based on mass spectrometry (MS) molecular analysis through a laser microprobe operating under ambient conditions using excitation of endogenous water molecules. Classification models based on cancer/normal/necrotic, tumor grade, and subtypes showed a minimum of 97.63% correct classification. Specific markers of normal, cancer, and necrotic regions were identified by tandem MS and validated by MS imaging. Real-time detection capabilities were demonstrated by ex vivo analysis with direct interrogation of classification models.
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Affiliation(s)
- Philippe Saudemont
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; European Associated Laboratory Inserm-Imperial College of London, LANCET, 59655 Villeneuve d'Ascq Cedex, France; SATT-Nord, Immeuble Central Gare, 4(ème) étage, 25 Avenue Charles St Venant, 59800 Lille, France
| | - Jusal Quanico
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; European Associated Laboratory Inserm-Imperial College of London, LANCET, 59655 Villeneuve d'Ascq Cedex, France; Université de Lille, CNRS UMR 8523, Physique des Lasers Atomes et Molécules (PhLAM), 59655 Villeneuve d'Ascq Cedex, France
| | - Yves-Marie Robin
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; Unité de Pathologie Morphologique et Moléculaire, Centre Oscar Lambret, 3 Rue Frédéric Combemale, 59020 Lille Cedex, France
| | - Anna Baud
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; European Associated Laboratory Inserm-Imperial College of London, LANCET, 59655 Villeneuve d'Ascq Cedex, France
| | - Julia Balog
- European Associated Laboratory Inserm-Imperial College of London, LANCET, 59655 Villeneuve d'Ascq Cedex, France; Department of Surgery and Cancer, Imperial College London, St. Mary's Hospital, Praed Street, London, NW1 1SQ, UK
| | - Benoit Fatou
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; European Associated Laboratory Inserm-Imperial College of London, LANCET, 59655 Villeneuve d'Ascq Cedex, France
| | - Dominique Tierny
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; OCR (Oncovet Clinical Research), Parc Eurasanté Lille Métropole, 80 Rue du Dr Yersin, 59120 Loos, France
| | - Quentin Pascal
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; OCR (Oncovet Clinical Research), Parc Eurasanté Lille Métropole, 80 Rue du Dr Yersin, 59120 Loos, France
| | - Kevin Minier
- Oncovet, Avenue Paul Langevin, 59650 Villeneuve d'Ascq, France
| | - Mélissa Pottier
- Oncovet, Avenue Paul Langevin, 59650 Villeneuve d'Ascq, France
| | - Cristian Focsa
- Université de Lille, CNRS UMR 8523, Physique des Lasers Atomes et Molécules (PhLAM), 59655 Villeneuve d'Ascq Cedex, France
| | - Michael Ziskind
- Université de Lille, CNRS UMR 8523, Physique des Lasers Atomes et Molécules (PhLAM), 59655 Villeneuve d'Ascq Cedex, France
| | - Zoltan Takats
- European Associated Laboratory Inserm-Imperial College of London, LANCET, 59655 Villeneuve d'Ascq Cedex, France; Department of Surgery and Cancer, Imperial College London, St. Mary's Hospital, Praed Street, London, NW1 1SQ, UK.
| | - Michel Salzet
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; European Associated Laboratory Inserm-Imperial College of London, LANCET, 59655 Villeneuve d'Ascq Cedex, France.
| | - Isabelle Fournier
- Université de Lille, Inserm U1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), Faculté des Sciences, Campus Cité Scientifique, Bât SN3, 1er étage, 59655 Villeneuve d'Ascq Cedex, France; European Associated Laboratory Inserm-Imperial College of London, LANCET, 59655 Villeneuve d'Ascq Cedex, France.
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Fatou B, Saudemont P, Duhamel M, Ziskind M, Focsa C, Salzet M, Fournier I. Real time and in vivo pharmaceutical and environmental studies with SpiderMass instrument. J Biotechnol 2018; 281:61-66. [DOI: 10.1016/j.jbiotec.2018.06.339] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/03/2018] [Accepted: 06/12/2018] [Indexed: 01/19/2023]
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Fournier I, Saudemont P, Quanico J, Fatou B, Minier K, Pottier M, Bouchaert E, Pascal Q, Focsa C, Ziskind M, Tierny D, Salzet M. Can real time molecular analyses change the paradigm of dog sarcoma diagnosis and classification? J Biotechnol 2018. [DOI: 10.1016/j.jbiotec.2018.06.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Fatou B, Ziskind M, Saudemont P, Quanico J, Focsa C, Salzet M, Fournier I. Remote Atmospheric Pressure Infrared Matrix-Assisted Laser Desorption-Ionization Mass Spectrometry (Remote IR-MALDI MS) of Proteins. Mol Cell Proteomics 2018; 17:1637-1649. [PMID: 29653959 DOI: 10.1074/mcp.tir117.000582] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 04/12/2018] [Indexed: 11/06/2022] Open
Abstract
Remote Infrared Matrix-Assisted Laser Desorption/Ionization (Remote IR-MALDI) system using tissue endogenous water as matrix was shown to enable in vivo real-time mass spectrometry analysis with minimal invasiveness. Initially the system was used to detect metabolites and lipids. Here, we demonstrate its capability to detect and analyze peptides and proteins. Very interestingly, the corresponding mass spectra show ESI-like charge state distribution, opening many applications for structural elucidation to be performed in real-time by Top-Down strategy. The charge states show no dependence toward laser wavelength or length of the transfer tube. Indeed, remote analysis can be performed 5 m away from the mass spectrometer without modification of spectra. On the contrary, addition of glycerol to water shift the charge state distributions toward even higher charge states. The desorption/ionization process is very soft, allowing to maintain protein conformation as in ESI. Observation of proteins and similar spectral features on tissue, when protein standards are deposited on raw tissue pieces, could potentially open the way to their direct analysis from biological samples. This also brings interesting features that could contribute to the understanding of IR MALDI ionization mechanism.
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Affiliation(s)
- Benoit Fatou
- From the ‡Université de Lille, INSERM, U1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), F-59000 Lille, France.,§Université de Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Michael Ziskind
- §Université de Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Philippe Saudemont
- From the ‡Université de Lille, INSERM, U1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), F-59000 Lille, France.,¶SATT Nord, Immeuble Central Gare, 4e étage, 25, Avenue Charles St Venant, F-59800 Lille, France
| | - Jusal Quanico
- From the ‡Université de Lille, INSERM, U1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), F-59000 Lille, France.,§Université de Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Cristian Focsa
- §Université de Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Michel Salzet
- From the ‡Université de Lille, INSERM, U1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), F-59000 Lille, France
| | - Isabelle Fournier
- From the ‡Université de Lille, INSERM, U1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM), F-59000 Lille, France;
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