Mass Spectrometry Imaging

A special issue of Methods and Protocols (ISSN 2409-9279).

Deadline for manuscript submissions: closed (31 December 2019) | Viewed by 6768

Special Issue Editor


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Guest Editor
1. Department of Analytical Biochemistry, Institute of Biochemistry and Medical Chemistry, University of Pécs Medical School, 7624 Pécs, Hungary
2. National Human Reproduction Laboratory, University of Pécs, 7624 Pécs, Hungary
3. ELKH-PTE Human Reproduction Research Group, University of Pécs, 7624 Pécs, Hungary
Interests: mass spectrometry; imaging mass spectrometry; embryogenesis; cancer diagnosis; andrology; fertilization
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Special Issue Information

Dear Colleagues,

Mass spectrometry imaging (MSI) makes the possibility of combining histological information with a label-free mass spectrometric imaging technology. MSI has emerged as an important tool to visualize the spatial distributions of even hundreds of biomolecules, directly from the sample surface. Various ionization techniques have been implemented for molecular imaging of biological tissue sections. Secondary ion mass spectrometry (SIMS) and matrix assisted laser desorption ionization (MALDI) mass spectrometry are the most widely-used MSI methods, both of which require vacuum conditions. Ambient ionization MSI techniques have grown rapidly in the past decade as well, enabling the analysis under atmospheric pressure with minimum or no sample preparation. In vivo and in situ MSI have become approachable with the advent of ambient ionization sources, such as laser ablation electrospray ionization (LAESI), desorption electrospray ionization (DESI), desorption atmospheric pressure photoionization (DAPPI), probe electrospray ionization (PESI), nanospray desorption electrospray ionization (nanoDESI), etc. MSI facilitates the simultaneous imaging of small metabolites, lipids, polypeptides, and large proteins in tissue sections. Soft ionization yields minimum fragmentation attributing to its relative low energy deposition and thus keeps the biomolecules intact. MSI has been extensively applied in different fields including pharmaceutical drug development, biochemistry, forensic science, clinical research, and biomarker discovery.

In this Special Issue on “Mass Spectrometry Imaging”, we welcome researchers to submit both original research manuscripts, as well as review papers, on all areas of in vitro and in vivo Imaging Mass Spectrometry. The goal of this Special Issue is to collect the most recent state of the art technological developments, applications, sample pre-treatment protocols and data analysis workflows in this emerging scientific field.

Dr. Laszlo Mark
Guest Editor

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Keywords

  • imaging
  • mass spectrometry
  • MALDI
  • SIMS
  • LAESI
  • DESI
  • tissue section

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Published Papers (1 paper)

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Research

20 pages, 8596 KiB  
Article
MALDI Mass Spectrometry Imaging Linked with Top-Down Proteomics as a Tool to Study the Non-Small-Cell Lung Cancer Tumor Microenvironment
by Eline Berghmans, Geert Van Raemdonck, Karin Schildermans, Hanny Willems, Kurt Boonen, Evelyne Maes, Inge Mertens, Patrick Pauwels and Geert Baggerman
Methods Protoc. 2019, 2(2), 44; https://doi.org/10.3390/mps2020044 - 28 May 2019
Cited by 17 | Viewed by 6180
Abstract
Advanced non-small-cell lung cancer (NSCLC) is generally linked with a poor prognosis and is one of the leading causes of cancer-related deaths worldwide. Since only a minority of the patients respond well to chemotherapy and/or targeted therapies, immunotherapy might be a valid alternative [...] Read more.
Advanced non-small-cell lung cancer (NSCLC) is generally linked with a poor prognosis and is one of the leading causes of cancer-related deaths worldwide. Since only a minority of the patients respond well to chemotherapy and/or targeted therapies, immunotherapy might be a valid alternative in the lung cancer treatment field, as immunotherapy attempts to strengthen the body’s own immune response to recognize and eliminate malignant tumor cells. However, positive response patterns to immunotherapy remain unclear. In this study, we demonstrate how immune-related factors could be visualized from single NSCLC tissue sections (Biobank@UZA) while retaining their spatial information by using matrix assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI), in order to unravel the molecular profile of NSCLC patients. In this way, different regions in lung cancerous tissues could be discriminated based on the molecular composition. In addition, we linked visualization (MALDI MSI) and identification (based on liquid chromatography higher resolution mass spectrometry) of the molecules of interest for the correct biological interpretation of the observed molecular differences within the area in which these molecules are detected. This is of major importance to fully understand the underlying molecular profile of the NSCLC tumor microenvironment. Full article
(This article belongs to the Special Issue Mass Spectrometry Imaging)
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