1
|
DeLaney K, Phetsanthad A, Li L. ADVANCES IN HIGH-RESOLUTION MALDI MASS SPECTROMETRY FOR NEUROBIOLOGY. MASS SPECTROMETRY REVIEWS 2022; 41:194-214. [PMID: 33165982 PMCID: PMC8106695 DOI: 10.1002/mas.21661] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 09/13/2020] [Indexed: 05/08/2023]
Abstract
Research in the field of neurobiology and neurochemistry has seen a rapid expansion in the last several years due to advances in technologies and instrumentation, facilitating the detection of biomolecules critical to the complex signaling of neurons. Part of this growth has been due to the development and implementation of high-resolution Fourier transform (FT) mass spectrometry (MS), as is offered by FT ion cyclotron resonance (FTICR) and Orbitrap mass analyzers, which improves the accuracy of measurements and helps resolve the complex biological mixtures often analyzed in the nervous system. The coupling of matrix-assisted laser desorption/ionization (MALDI) with high-resolution MS has drastically expanded the information that can be obtained with these complex samples. This review discusses notable technical developments in MALDI-FTICR and MALDI-Orbitrap platforms and their applications toward molecules in the nervous system, including sequence elucidation and profiling with de novo sequencing, analysis of post-translational modifications, in situ analysis, key advances in sample preparation and handling, quantitation, and imaging. Notable novel applications are also discussed to highlight key developments critical to advancing our understanding of neurobiology and providing insight into the exciting future of this field. © 2020 John Wiley & Sons Ltd. Mass Spec Rev.
Collapse
Affiliation(s)
- Kellen DeLaney
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Ashley Phetsanthad
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705, USA
| |
Collapse
|
2
|
Teearu A, Vahur S, Rodima T, Herodes K, Bonrath W, Netscher T, Tshepelevitsh S, Trummal A, Lõkov M, Leito I. Method development for the analysis of resinous materials with MALDI-FT-ICR-MS: novel internal standards and a new matrix material for negative ion mode. JOURNAL OF MASS SPECTROMETRY : JMS 2017; 52:603-617. [PMID: 28471541 DOI: 10.1002/jms.3943] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 04/18/2017] [Accepted: 05/01/2017] [Indexed: 06/07/2023]
Abstract
Matrix-assisted laser desorption/ionization (MALDI) is a mass spectrometry (MS) ionization technique suitable for a wide variety of sample types including highly complex ones such as natural resinous materials. Coupled with Fourier transform ion cyclotron resonance (FT-ICR) mass analyser, which provides mass spectra with high resolution and accuracy, the method gives a wealth of information about the composition of the sample. One of the key aspects in MALDI-MS is the right choice of matrix compound. We have previously demonstrated that 2,5-dihydroxybenzoic acid is suitable for the positive ion mode analysis of resinous samples. However, 2,5-dihydroxybenzoic acid was found to be unsuitable for the analysis of these samples in the negative ion mode. The second problem addressed was the limited choice of calibration standards offering a flexible selection of m/z values under m/z 1000. This study presents a modified MALDI-FT-ICR-MS method for the analysis of resinous materials, which incorporates a novel matrix compound, 2-aminoacridine for the negative ion mode analysis and extends the selection of internal standards with m/z <1000 for both positive (15 different phosphazenium cations) and negative (anions of four fluorine-rich sulpho-compounds) ion mode. The novel internal calibration compounds and matrix material were tested for the analysis of various natural resins and real-life varnish samples taken from cultural heritage objects. Copyright © 2017 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- A Teearu
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, Tartu, 50411, Estonia
| | - S Vahur
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, Tartu, 50411, Estonia
| | - T Rodima
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, Tartu, 50411, Estonia
| | - K Herodes
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, Tartu, 50411, Estonia
| | - W Bonrath
- DSM Nutritional Products, Research and Development, CH, 4002, Basel, Switzerland
| | - T Netscher
- DSM Nutritional Products, Research and Development, CH, 4002, Basel, Switzerland
| | - S Tshepelevitsh
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, Tartu, 50411, Estonia
| | - A Trummal
- National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia
| | - M Lõkov
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, Tartu, 50411, Estonia
| | - I Leito
- Institute of Chemistry, Faculty of Science and Technology, University of Tartu, Ravila 14A, Tartu, 50411, Estonia
| |
Collapse
|
3
|
Meller K, Pomastowski P, Szumski M, Buszewski B. Preparation of an improved hydrophilic monolith to make trypsin-immobilized microreactors. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1043:128-137. [DOI: 10.1016/j.jchromb.2016.08.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 08/17/2016] [Accepted: 08/20/2016] [Indexed: 11/24/2022]
|
4
|
Le CH, Han J, Borchers CH. Dithranol as a matrix for matrix assisted laser desorption/ionization imaging on a fourier transform ion cyclotron resonance mass spectrometer. J Vis Exp 2013:e50733. [PMID: 24300588 DOI: 10.3791/50733] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Mass spectrometry imaging (MSI) determines the spatial localization and distribution patterns of compounds on the surface of a tissue section, mainly using MALDI (matrix assisted laser desorption/ionization)-based analytical techniques. New matrices for small-molecule MSI, which can improve the analysis of low-molecular weight (MW) compounds, are needed. These matrices should provide increased analyte signals while decreasing MALDI background signals. In addition, the use of ultrahigh-resolution instruments, such as Fourier transform ion cyclotron resonance (FTICR) mass spectrometers, has the ability to resolve analyte signals from matrix signals, and this can partially overcome many problems associated with the background originating from the MALDI matrix. The reduction in the intensities of the metastable matrix clusters by FTICR MS can also help to overcome some of the interferences associated with matrix peaks on other instruments. High-resolution instruments such as the FTICR mass spectrometers are advantageous as they can produce distribution patterns of many compounds simultaneously while still providing confidence in chemical identifications. Dithranol (DT; 1,8-dihydroxy-9,10-dihydroanthracen-9-one) has previously been reported as a MALDI matrix for tissue imaging. In this work, a protocol for the use of DT for MALDI imaging of endogenous lipids from the surfaces of mammalian tissue sections, by positive-ion MALDI-MS, on an ultrahigh-resolution hybrid quadrupole FTICR instrument has been provided.
Collapse
Affiliation(s)
- Cuong H Le
- University of Victoria-Genome BC Proteomics Centre, University of Victoria
| | | | | |
Collapse
|
5
|
Barry JA, Robichaud G, Muddiman DC. Mass recalibration of FT-ICR mass spectrometry imaging data using the average frequency shift of ambient ions. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:1137-45. [PMID: 23715870 PMCID: PMC3739293 DOI: 10.1007/s13361-013-0659-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 04/29/2013] [Accepted: 04/29/2013] [Indexed: 05/04/2023]
Abstract
Achieving and maintaining high mass measurement accuracy (MMA) throughout a mass spectrometry imaging (MSI) experiment is vital to the identification of the observed ions. However, when using FTMS instruments, fluctuations in the total ion abundance at each pixel due to inherent biological variation in the tissue section can introduce space charge effects that systematically shift the observed mass. Herein we apply a recalibration based on the observed cyclotron frequency shift of ions found in the ambient laboratory environment, polydimethylcyclosiloxanes (PDMS). This calibration method is capable of achieving part per billion (ppb) mass accuracy with relatively high precision for an infrared matrix-assisted laser desorption electrospray ionization (IR-MALDESI) MSI dataset. Comparisons with previously published mass calibration approaches are also presented.
Collapse
Affiliation(s)
| | | | - David C. Muddiman
- Author for Correspondence W.M. Keck FT-ICR Mass Spectrometry Laboratory Department of Chemistry North Carolina State University Raleigh, North Carolina 27695 Phone: 919-513-0084 Fax: 919-513-7993
| |
Collapse
|