1
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Glycosphingolipids are mediators of cancer plasticity through independent signaling pathways. Cell Rep 2022; 40:111181. [PMID: 35977490 DOI: 10.1016/j.celrep.2022.111181] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 06/01/2022] [Accepted: 07/19/2022] [Indexed: 11/23/2022] Open
Abstract
The molecular repertoire promoting cancer cell plasticity is not fully elucidated. Here, we propose that glycosphingolipids (GSLs), specifically the globo and ganglio series, correlate and promote the transition between epithelial and mesenchymal cells. The epithelial character of ovarian cancer remains stable throughout disease progression, and spatial glycosphingolipidomics reveals elevated globosides in the tumor compartment compared with the ganglioside-rich stroma. CRISPR-Cas9 knockin mediated truncation of endogenous E-cadherin induces epithelial-to-mesenchymal transition (EMT) and decreases globosides. The transcriptomics analysis identifies the ganglioside-synthesizing enzyme ST8SIA1 to be consistently elevated in mesenchymal-like samples, predicting poor outcome. Subsequent deletion of ST8SIA1 induces epithelial cell features through mTORS2448 phosphorylation, whereas loss of globosides in ΔA4GALT cells, resulting in EMT, is accompanied by increased ERKY202/T204 and AKTS124. The GSL composition dynamics corroborate cancer cell plasticity, and further evidence suggests that mesenchymal cells are maintained through ganglioside-dependent, calcium-mediated mechanisms.
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2
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Angerer TB, Bour J, Biagi JL, Moskovets E, Frache G. Evaluation of 6 MALDI-Matrices for 10 μm Lipid Imaging and On-Tissue MSn with AP-MALDI-Orbitrap. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:760-771. [PMID: 35358390 PMCID: PMC9074099 DOI: 10.1021/jasms.1c00327] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Mass spectrometry imaging is a technique uniquely suited to localize and identify lipids in a tissue sample. Using an atmospheric pressure (AP-) matrix-assisted laser desorption ionization (MALDI) source coupled to an Orbitrap Elite, numerous lipid locations and structures can be determined in high mass resolution spectra and at cellular spatial resolution, but careful sample preparation is necessary. We tested 11 protocols on serial brain sections for the commonly used MALDI matrices CHCA, norharmane, DHB, DHAP, THAP, and DAN in combination with tissue washing and matrix additives to determine the lipid coverage, signal intensity, and spatial resolution achievable with AP-MALDI. In positive-ion mode, the most lipids could be detected with CHCA and THAP, while THAP and DAN without additional treatment offered the best signal intensities. In negative-ion mode, DAN showed the best lipid coverage and DHAP performed superiorly for gangliosides. DHB produced intense cholesterol signals in the white matter. One hundred fifty-five lipids were assigned in positive-ion mode (THAP) and 137 in negative-ion mode (DAN), and 76 peaks were identified using on-tissue tandem-MS. The spatial resolution achievable with DAN was 10 μm, confirmed with on tissue line-scans. This enabled the association of lipid species to single neurons in AP-MALDI images. The results show that the performance of AP-MALDI is comparable to vacuum MALDI techniques for lipid imaging.
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Affiliation(s)
- Tina B. Angerer
- Luxembourg
Institute of Science and Technology (LIST), Advanced Characterization platform, Materials Research
and Technology, 41, rue
du Brill, L-4422 Belvaux, Luxembourg
| | - Jerome Bour
- Luxembourg
Institute of Science and Technology (LIST), Advanced Characterization platform, Materials Research
and Technology, 41, rue
du Brill, L-4422 Belvaux, Luxembourg
| | - Jean-Luc Biagi
- Luxembourg
Institute of Science and Technology (LIST), Advanced Characterization platform, Materials Research
and Technology, 41, rue
du Brill, L-4422 Belvaux, Luxembourg
| | | | - Gilles Frache
- Luxembourg
Institute of Science and Technology (LIST), Advanced Characterization platform, Materials Research
and Technology, 41, rue
du Brill, L-4422 Belvaux, Luxembourg
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3
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Hasan MM, Mimi MA, Mamun MA, Islam A, Waliullah ASM, Nabi MM, Tamannaa Z, Kahyo T, Setou M. Mass Spectrometry Imaging for Glycome in the Brain. Front Neuroanat 2021; 15:711955. [PMID: 34393728 PMCID: PMC8358800 DOI: 10.3389/fnana.2021.711955] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/07/2021] [Indexed: 12/12/2022] Open
Abstract
Glycans are diverse structured biomolecules that play crucial roles in various biological processes. Glycosylation, an enzymatic system through which various glycans are bound to proteins and lipids, is the most common and functionally crucial post-translational modification process. It is known to be associated with brain development, signal transduction, molecular trafficking, neurodegenerative disorders, psychopathologies, and brain cancers. Glycans in glycoproteins and glycolipids expressed in brain cells are involved in neuronal development, biological processes, and central nervous system maintenance. The composition and expression of glycans are known to change during those physiological processes. Therefore, imaging of glycans and the glycoconjugates in the brain regions has become a “hot” topic nowadays. Imaging techniques using lectins, antibodies, and chemical reporters are traditionally used for glycan detection. However, those techniques offer limited glycome detection. Mass spectrometry imaging (MSI) is an evolving field that combines mass spectrometry with histology allowing spatial and label-free visualization of molecules in the brain. In the last decades, several studies have employed MSI for glycome imaging in brain tissues. The current state of MSI uses on-tissue enzymatic digestion or chemical reaction to facilitate successful glycome imaging. Here, we reviewed the available literature that applied MSI techniques for glycome visualization and characterization in the brain. We also described the general methodologies for glycome MSI and discussed its potential use in the three-dimensional MSI in the brain.
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Affiliation(s)
- Md Mahmudul Hasan
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mst Afsana Mimi
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Md Al Mamun
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Ariful Islam
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - A S M Waliullah
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Md Mahamodun Nabi
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Zinat Tamannaa
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tomoaki Kahyo
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan.,International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mitsutoshi Setou
- Department of Cellular & Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Japan.,International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, Japan.,Department of Systems Molecular Anatomy, Institute for Medical Photonics Research, Preeminent Medical Photonics Education & Research Center, Hamamatsu, Japan
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4
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Stanback AE, Conroy LR, Young LEA, Hawkinson TR, Markussen KH, Clarke HA, Allison DB, Sun RC. Regional N-glycan and lipid analysis from tissues using MALDI-mass spectrometry imaging. STAR Protoc 2021; 2:100304. [PMID: 33554139 PMCID: PMC7848795 DOI: 10.1016/j.xpro.2021.100304] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
N-glycans and lipids are structural metabolites that play important roles in cellular processes. Both show unique regional distribution in tissues; therefore, spatial analyses of these metabolites are crucial to our understanding of cellular physiology. Matrix-assisted laser desorption/ionization-mass spectrometry imaging (MALDI-MSI) is an innovative technique that enables in situ detection of analytes with spatial distribution. This workflow details a MALDI-MSI protocol for the spatial profiling of N-glycans and lipids from tissues following application of enzyme and MALDI matrix. For complete details on the use and execution of this protocol, please refer to Drake et al. (2018) and Andres et al. (2020). MALDI-MSI of N-glycans and lipids from tissues Enzyme-assisted release of N-linked glycans from formalin-fixed tissues High-velocity deposition of matrix to improve rigor and reproducibility Ion mobility separation of analytes from matrix as part of imaging workflow
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Affiliation(s)
- Alexandra E Stanback
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40536-0298, USA
| | - Lindsey R Conroy
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40536-0298, USA.,Markey Cancer Center, Lexington, KY 40536-0298, USA
| | - Lyndsay E A Young
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY 40536-0298, USA
| | - Tara R Hawkinson
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40536-0298, USA
| | - Kia H Markussen
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY 40536-0298, USA
| | - Harrison A Clarke
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40536-0298, USA
| | - Derek B Allison
- Markey Cancer Center, Lexington, KY 40536-0298, USA.,Department of Pathology and Laboratory Medicine, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - Ramon C Sun
- Department of Neuroscience, University of Kentucky College of Medicine, Lexington, KY 40536-0298, USA.,Markey Cancer Center, Lexington, KY 40536-0298, USA
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5
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Deciphering the Importance of Glycosphingolipids on Cellular and Molecular Mechanisms Associated with Epithelial-to-Mesenchymal Transition in Cancer. Biomolecules 2021; 11:biom11010062. [PMID: 33418847 PMCID: PMC7824851 DOI: 10.3390/biom11010062] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/31/2020] [Accepted: 01/02/2021] [Indexed: 12/12/2022] Open
Abstract
Every living cell is covered with a dense and complex layer of glycans on the cell surface, which have important functions in the interaction between cells and their environment. Glycosphingolipids (GSLs) are glycans linked to lipid molecules that together with sphingolipids, sterols, and proteins form plasma membrane lipid rafts that contribute to membrane integrity and provide specific recognition sites. GSLs are subdivided into three major series (globo-, ganglio-, and neolacto-series) and are synthesized in a non-template driven process by enzymes localized in the ER and Golgi apparatus. Altered glycosylation of lipids are known to be involved in tumor development and metastasis. Metastasis is frequently linked with reversible epithelial-to-mesenchymal transition (EMT), a process involved in tumor progression, and the formation of new distant metastatic sites (mesenchymal-to-epithelial transition or MET). On a single cell basis, cancer cells lose their epithelial features to gain mesenchymal characteristics via mechanisms influenced by the composition of the GSLs on the cell surface. Here, we summarize the literature on GSLs in the context of reversible and cancer-associated EMT and discuss how the modification of GSLs at the cell surface may promote this process.
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6
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Hoang K, Trimpin S, McEwen CN, Pophristic M. A Combination MAI and MALDI Vacuum Source Operational from Atmospheric Pressure for Fast, Robust, and Sensitive Analyses. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:124-132. [PMID: 33270447 DOI: 10.1021/jasms.0c00298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Previously, vacuum matrix-assisted ionization (vMAI) was employed with matrix/analyte sample introduction into the vacuum of a mass spectrometer on a probe sample introduction device. Low attomole detection was achieved, while no carryover was observed even for concentrated samples. Here, we report a new vacuum ionization source designed to duplicate the sensitivity and robustness of probe device while providing fast multisample introduction to vacuum and rapid sequential ionization. Exposure of a sample to the vacuum of the mass spectrometer provides spontaneous ionization of volatile as well as nonvolatile analytes without the need for external energy input. However, the novel source design described herein, in addition to vMAI, can employ a laser to obtain vacuum matrix-assisted laser desorption/ionization (vMALDI). In particular, ionization by vMAI or vMALDI is achieved by using the appropriate matrix. Switching between ionization modes is accomplished in a few seconds. We present results demonstrating the utility of the two ionization methods in combination to improve the molecular analyses of sample composition. In both ionization modes, multiple samples can be sequentially and rapidly acquired to increase throughput in MS. With the prototype source, samples were acquired in as little as 1 s per sample. Exchanging multisample plates can be accomplished in as little as 2 s, suggesting low-cost high-throughput automation when properly developed.
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Affiliation(s)
- Khoa Hoang
- MS, LLC, Hockessin, Delaware 19707, United States
| | - Sarah Trimpin
- MS, LLC, Hockessin, Delaware 19707, United States
- Wayne State University, Detroit, Michigan 48202, United States
| | - Charles N McEwen
- MS, LLC, Hockessin, Delaware 19707, United States
- University of the Sciences, Philadelphia, Pennsylvania 19104, United States
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7
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Neef SK, Winter S, Hofmann U, Mürdter TE, Schaeffeler E, Horn H, Buck A, Walch A, Hennenlotter J, Ott G, Fend F, Bedke J, Schwab M, Haag M. Optimized protocol for metabolomic and lipidomic profiling in formalin-fixed paraffin-embedded kidney tissue by LC-MS. Anal Chim Acta 2020; 1134:125-135. [DOI: 10.1016/j.aca.2020.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/31/2020] [Accepted: 08/02/2020] [Indexed: 12/16/2022]
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8
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Garate J, Lage S, Martín-Saiz L, Perez-Valle A, Ochoa B, Boyano MD, Fernández R, Fernández JA. Influence of Lipid Fragmentation in the Data Analysis of Imaging Mass Spectrometry Experiments. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:517-526. [PMID: 32126773 DOI: 10.1021/jasms.9b00090] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Imaging mass spectrometry (IMS) is becoming an essential technique in lipidomics. Still, many questions remain open, precluding it from achieving its full potential. Among them, identification of species directly from the tissue is of paramount importance. However, it is not an easy task, due to the abundance and variety of lipid species, their numerous fragmentation pathways, and the formation of a significant number of adducts, both with the matrix and with the cations present in the tissue. Here, we explore the fragmentation pathways of 17 lipid classes, demonstrating that in-source fragmentation hampers identification of some lipid species. Then, we analyze what type of adducts each class is more prone to form. Finally, we use that information together with data from on-tissue MS/MS and MS3 to refine the peak assignment in a real experiment over sections of human nevi, to demonstrate that statistical analysis of the data is significantly more robust if unwanted peaks due to fragmentation, matrix, and other species that only introduce noise in the analysis are excluded.
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Affiliation(s)
| | | | | | | | | | - M Dolores Boyano
- Health Research Institute, Cruces University Hospital, Barakaldo, Spain
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9
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Lee C, Ni CK. Soft Matrix-Assisted Laser Desorption/Ionization for Labile Glycoconjugates. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:1455-1463. [PMID: 30993639 DOI: 10.1007/s13361-019-02208-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/24/2019] [Accepted: 03/25/2019] [Indexed: 06/09/2023]
Abstract
Since its introduction, matrix-assisted laser desorption/ionization (MALDI) has been widely used for the mass analysis of biomolecules. The "soft ionization" of MALDI enables accurate mass determination of intact biomolecules. However, the ionization and desorption processes of MALDI are not adequately soft as many labile biomolecules, such as glycoconjugates containing sialic acid or the sulfate functional group, easily dissociate into fragments and sometimes, no intact molecules are observed. In this study, we compared the conventional matrix of MALDI, namely 2,5-dihydroxybenzoic acid, to various soft matrices of MALDI-specifically, 5-methoxysalicylic acid, diamond nanoparticle trilayers, HgTe nanostructures, ionic liquid, and droplets of frozen solutions-by using three labile glycoconjugates as analytes: gangliosides, heparin, and pullulan. We demonstrated that droplets of frozen solution are the softest matrices for gangliosides and heparin. In particular, droplets of frozen solution do not generate fragments for gangliosides and can be used to determine the relative abundance of various gangliosides, whereas ionic liquid 2,5-dihydroxybenzoic acid butylamine is the most suitable matrix for pullulan mass analysis. Graphical Abstract.
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Affiliation(s)
- Chuping Lee
- Institute of Atomic and Molecular Sciences, Academia Sinica, P. O. Box 23-166, Taipei, 10617, Taiwan
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Chi-Kung Ni
- Institute of Atomic and Molecular Sciences, Academia Sinica, P. O. Box 23-166, Taipei, 10617, Taiwan.
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan.
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10
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Fincher JA, Dyer JE, Korte AR, Yadavilli S, Morris NJ, Vertes A. Matrix‐free mass spectrometry imaging of mouse brain tissue sections on silicon nanopost arrays. J Comp Neurol 2018; 527:2101-2121. [DOI: 10.1002/cne.24566] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/12/2018] [Accepted: 10/15/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Jarod A. Fincher
- George Washington University Washington District of Columbia 20052
| | | | - Andrew R. Korte
- George Washington University Washington District of Columbia 20052
| | - Sridevi Yadavilli
- Research Center for Genetic Medicine Children's National Medical Center Washington District of Columbia 20010
| | | | - Akos Vertes
- George Washington University Washington District of Columbia 20052
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11
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Zhang Q, Li Z, Wang Y, Zheng Q, Li J. Mass spectrometry for protein sialoglycosylation. MASS SPECTROMETRY REVIEWS 2018; 37:652-680. [PMID: 29228471 DOI: 10.1002/mas.21555] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/17/2017] [Indexed: 06/07/2023]
Abstract
Sialic acids are a family of structurally unique and negatively charged nine-carbon sugars, normally found at the terminal positions of glycan chains on glycoproteins and glycolipids. The glycosylation of proteins is a universal post-translational modification in eukaryotic species and regulates essential biological functions, in which the most common sialic acid is N-acetyl-neuraminic acid (2-keto-5-acetamido-3,5-dideoxy-D-glycero-D-galactononulopyranos-1-onic acid) (Neu5NAc). Because of the properties of sialic acids under general mass spectrometry (MS) conditions, such as instability, ionization discrimination, and mixed adducts, the use of MS in the analysis of protein sialoglycosylation is still challenging. The present review is focused on the application of MS related methodologies to the study of both N- and O-linked sialoglycans. We reviewed MS-based strategies for characterizing sialylation by analyzing intact glycoproteins, proteolytic digested glycopeptides, and released glycans. The review concludes with future perspectives in the field.
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Affiliation(s)
- Qiwei Zhang
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Institute for Interdisciplinary Research, Institute of Environment and Health, School of Chemical and Environmental Engineering, Jianghan University, Wuhan, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Haidian District, Beijing, China
| | - Zack Li
- School of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Yawei Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Haidian District, Beijing, China
| | - Qi Zheng
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Institute for Interdisciplinary Research, Institute of Environment and Health, School of Chemical and Environmental Engineering, Jianghan University, Wuhan, China
| | - Jianjun Li
- National Research Council Canada, Ottawa, Ontario, Canada
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12
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Ucal Y, Ozpinar A. Improved spectra for MALDI MSI of peptides using ammonium phosphate monobasic in MALDI matrix. JOURNAL OF MASS SPECTROMETRY : JMS 2018; 53:635-648. [PMID: 29745432 DOI: 10.1002/jms.4198] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 04/19/2018] [Accepted: 04/25/2018] [Indexed: 05/03/2023]
Abstract
MALDI mass spectrometry imaging (MSI) enables analysis of peptides along with histology. However, there are several critical steps in MALDI MSI of peptides, 1 of which is spectral quality. Suppression of MALDI matrix clusters by the aid of ammonium salts in MALDI experiments is well known. It is asserted that addition of ammonium salts dissociates potential matrix adducts and thereafter decreases matrix cluster formation. Consequently, MALDI MS sensitivity and mass accuracy increase. Up to our knowledge, a limited number of MALDI MSI studies used ammonium salts as matrix additives to suppress matrix clusters and enhance peptide signals. In this work, we investigated the effect of ammonium phosphate monobasic (AmP) as alpha-cyano-4-hydroxycinnamic acid (α-CHCA) matrix additive in MALDI MSI of peptides. Prior to MALDI MSI, the effect of varying concentrations of AmP in α-CHCA was assessed in bovine serum albumin tryptic digests and compared with the control (α-CHCA without AmP). Based on our data, the addition of AmP as matrix additive decreased matrix cluster formation regardless of its concentration, and specifically, 8 mM AmP and 10 mM AmP increased bovine serum albumin peptide signal intensities. In MALDI MSI of peptides, both 8 and 10 mM AmP in α-CHCA improved peptide signals especially in the mass range of m/z 2000 to 3000. In particular, 9 peptide signals were found to have differential intensities within the tissues deposited with AmP in α-CHCA (AUC > 0.60). To the best of our knowledge, this is the first MALDI MSI of peptides work investigating different concentrations of AmP as α-CHCA matrix additive to enhance peptide signals in formalin-fixed paraffin-embedded (FFPE) tissues. Further, AmP as part of α-CHCA matrix could enhance protein identifications and support MALDI MSI-based proteomic approaches.
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Affiliation(s)
- Yasemin Ucal
- School of Medicine, Department of Medical Biochemistry, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Aysel Ozpinar
- School of Medicine, Department of Medical Biochemistry, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
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13
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Responsibility of lipid compositions for the amyloid ß assembly induced by ganglioside nanoclusters in mouse synaptosomal membranes. Polym J 2018. [DOI: 10.1038/s41428-018-0041-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Ermini L, Morganti E, Post A, Yeganeh B, Caniggia I, Leadley M, Faria CC, Rutka JT, Post M. Imaging mass spectrometry identifies prognostic ganglioside species in rodent intracranial transplants of glioma and medulloblastoma. PLoS One 2017; 12:e0176254. [PMID: 28463983 PMCID: PMC5413052 DOI: 10.1371/journal.pone.0176254] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 04/08/2017] [Indexed: 11/30/2022] Open
Abstract
Matrix-assisted laser desorption ionization (MALDI) imaging mass spectrometry (MALDI-MSI) allows us to investigate the distribution of lipid molecules within tissues. We used MALDI-MSI to identify prognostic gangliosides in tissue sections of rat intracranial allografts of rat glioma and mouse intracranial xenografts of human medulloblastoma. In the healthy adult rodent brain, GM1 and GD1 were the main types of glycolipids. Both gangliosides were absent in both intracranial transplants. The ganglioside GM3 was not present in the healthy adult brain but was highly expressed in rat glioma allografts. In combination with tandem mass spectrometry GM3 (d18:1/C24:0) was identified as the most abundant ganglioside species in the glioma allotransplant. By contrast, mouse xenografts of human medulloblastoma were characterized by prominent expression of the ganglioside GM2 (d18:0/C18:0). Together, these data demonstrate that tissue-based MALDI-MSI of gangliosides is able to discriminate between different brain tumors and may be a useful clinical tool for their classification and grading.
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Affiliation(s)
- Leonardo Ermini
- Program in Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Elena Morganti
- Program in Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Alexander Post
- Program in Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Behzad Yeganeh
- Program in Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Isabella Caniggia
- The Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Ontario, Canada
| | - Michael Leadley
- Program in Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Claudia C. Faria
- Division of Neurosurgery, Arthur and Sonia Labatt Brain Tumour Research Centre, Hospital for Sick Children, Toronto, Ontario, Canada
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - James T. Rutka
- Division of Neurosurgery, Arthur and Sonia Labatt Brain Tumour Research Centre, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Martin Post
- Program in Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Ontario, Canada
- * E-mail:
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15
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Tian H, Sparvero LJ, Amoscato AA, Bloom A, Bayır H, Kagan VE, Winograd N. Gas Cluster Ion Beam Time-of-Flight Secondary Ion Mass Spectrometry High-Resolution Imaging of Cardiolipin Speciation in the Brain: Identification of Molecular Losses after Traumatic Injury. Anal Chem 2017; 89:4611-4619. [PMID: 28306235 PMCID: PMC5856236 DOI: 10.1021/acs.analchem.7b00164] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Gas cluster ion beam-secondary ion mass spectrometry (GCIB-SIMS) has shown the full potential of mapping intact lipids in biological systems with better than 10 μm lateral resolution. This study investigated further the capability of GCIB-SIMS in imaging high-mass signals from intact cardiolipin (CL) and gangliosides in normal brain and the effect of a controlled cortical impact model (CCI) of traumatic brain injury (TBI) on their distribution. A combination of enzymatic and chemical treatments was employed to suppress the signals from the most abundant phospholipids (phosphatidylcholine (PC) and phosphatidylethanolamine (PE)) and enhance the signals from the low-abundance CLs and gangliosides to allow their GCIB-SIMS detection at 8 and 16 μm spatial resolution. Brain CLs have not been observed previously using other contemporary imaging mass spectrometry techniques at better than 50 μm spatial resolution. High-resolution images of naive and injured brain tissue facilitated the comparison of CL species across three multicell layers in the CA1, CA3, and DG regions of the hippocampus. GCIB-SIMS also reliably mapped losses of oxidizable polyunsaturated CL species (but not the oxidation-resistant saturated and monounsaturated gangliosides) to regions including the CA1 and CA3 of the hippocampus after CCI. This work extends the detection range for SIMS measurements of intact lipids to above m/z 2000, bridging the mass range gap compared with MALDI. Further advances in high-resolution SIMS of CLs, with the potential for single cell or supra-cellular imaging, will be essential for the understanding of CL's functional and structural organization in normal and injured brain.
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Affiliation(s)
- Hua Tian
- Department of Chemistry, Pennsylvania State University, State College, Pennsylvania 16802, United States
| | - Louis J. Sparvero
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Andrew A. Amoscato
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Anna Bloom
- Department of Chemistry, Pennsylvania State University, State College, Pennsylvania 16802, United States
| | - Hülya Bayır
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- Department of Critical Care Medicine, and Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Valerian E. Kagan
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- Departments of Chemistry, Pharmacology and Chemical Biology, Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Nicholas Winograd
- Department of Chemistry, Pennsylvania State University, State College, Pennsylvania 16802, United States
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16
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Karlsson O, Michno W, Ransome Y, Hanrieder J. MALDI imaging delineates hippocampal glycosphingolipid changes associated with neurotoxin induced proteopathy following neonatal BMAA exposure. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1865:740-746. [PMID: 27956354 DOI: 10.1016/j.bbapap.2016.12.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 12/05/2016] [Accepted: 12/08/2016] [Indexed: 11/16/2022]
Abstract
The environmental toxin β-N-methylamino-L-alanine (BMAA) has been proposed to contribute to neurodegenerative diseases. We have previously shown that neonatal exposure to BMAA results in dose-dependent cognitive impairments, proteomic alterations and progressive neurodegeneration in the hippocampus of adult rats. A high BMAA dose (460mg/kg) also induced intracellular fibril formation, increased protein ubiquitination and enrichment of proteins important for lipid transport and metabolism. The aim of this study was therefore to elucidate the role of neuronal lipids in BMAA-induced neurodegeneration. By using matrix assisted laser desorption/ionization imaging mass spectrometry (MALDI IMS), we characterized the spatial lipid profile in the hippocampus of six month-old rats that were treated neonatally (postnatal days 9-10) with 460mg/kg BMAA. Multivariate statistical analysis revealed long-term changes in distinct ganglioside species (GM, GD, GT) in the dentate gyrus. These changes could be a consequence of direct effects on ganglioside biosynthesis through the b-series (GM3-GD3-GD2-GD1b-GT1b) and may be linked to astrogliosis. Complementary immunohistochemistry experiments towards GFAP and S100β further verified the role of increased astrocyte activity in BMAA-induced brain damage. This highlights the potential of imaging MS for probing chemical changes associated with neuropathological mechanisms in situ. This article is part of a Special Issue entitled: MALDI Imaging, edited by Dr. Corinna Henkel and Prof. Peter Hoffmann.
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Affiliation(s)
- Oskar Karlsson
- Center for Molecular Medicine, Department of Clinical Neuroscience, Karolinska Institute, 171 76 Stockholm, Sweden; Department of Pharmaceutical Biosciences, Toxicology and Drug Safety, Uppsala University, Box 591, 751 24 Uppsala, Sweden; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Wojciech Michno
- Department of Psychiatry and Neurochemistry, Sahlgrenska Academy at the University of Gothenburg, Mölndal Hospital, House V, 431 80 Mölndal, Sweden
| | - Yusuf Ransome
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
| | - Jörg Hanrieder
- Department of Psychiatry and Neurochemistry, Sahlgrenska Academy at the University of Gothenburg, Mölndal Hospital, House V, 431 80 Mölndal, Sweden; Department of Chemistry and Chemical Engineering, Analytical Chemistry, Chalmers University of Technology, Kemivägen 10, 412 96 Gothenburg, Sweden; Department of Molecular Neuroscience, UCL Institute of Neurology, University College London, Queen Square, WC1N 3BG London, UK.
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17
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Dufresne M, Guneysu D, Patterson NH, Marcinkiewicz MM, Regina A, Demeule M, Chaurand P. Multimodal detection of GM2 and GM3 lipid species in the brain of mucopolysaccharidosis type II mouse by serial imaging mass spectrometry and immunohistochemistry. Anal Bioanal Chem 2016; 409:1425-1433. [DOI: 10.1007/s00216-016-0076-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/24/2016] [Accepted: 10/31/2016] [Indexed: 11/24/2022]
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18
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Fernández R, Carriel V, Lage S, Garate J, Díez-García J, Ochoa B, Castro B, Alaminos M, Fernández JA. Deciphering the Lipid Architecture of the Rat Sciatic Nerve Using Imaging Mass Spectrometry. ACS Chem Neurosci 2016; 7:624-32. [PMID: 27043994 DOI: 10.1021/acschemneuro.6b00010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Knowledge on the normal structure and molecular composition of the peripheral nerves is essential to understand their pathophysiology and to select the regeneration strategies after injury. However, the precise lipid composition of the normal peripheral nerve is still poorly known. Here, we present the first study of distribution of individual lipids in the mature sciatic nerve of rats by imaging mass spectrometry. Both positive and negative ion modes were used to detect, identify and in situ map 166 molecular species of mainly glycerophospholipids, sphingomyelins, sulfatides, and diacyl and triacylglycerols. In parallel, lipid extracts were analyzed by LC-MS/MS to verify and complement the identification of lipids directly from the whole tissue. Three anatomical regions were clearly identified by its differential lipid composition: the nerve fibers, the connective tissue and the adipose tissue that surrounds the nerve. Unexpectedly, very little variety of phosphatidylcholine (PC) species was found, being by far PC 34:1 the most abundant species. Also, a rich composition on sulfatides was detected in fibers, probably due to the important role they play in the myelin cover around axons, as well as an abundance of storage lipids in the adipose and connective tissues. The database of lipids here presented for each region and for the whole sciatic nerve is a first step toward understanding the variety of the peripheral nerves' lipidome and its changes associated with different diseases and mechanical injuries.
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Affiliation(s)
| | - Víctor Carriel
- Tissue
Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, 18012 Granada, Spain
| | | | | | | | | | - Begoña Castro
- Histocell, S.L., Bizkaia Technology Park 800, 48160 Derio, Spain
| | - Miguel Alaminos
- Tissue
Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, 18012 Granada, Spain
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19
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Zhang Y, Wang J, Liu J, Han J, Xiong S, Yong W, Zhao Z. Combination of ESI and MALDI mass spectrometry for qualitative, semi-quantitative and in situ analysis of gangliosides in brain. Sci Rep 2016; 6:25289. [PMID: 27142336 PMCID: PMC4855142 DOI: 10.1038/srep25289] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/14/2016] [Indexed: 01/04/2023] Open
Abstract
Gangliosides are a family of complex lipids that are abundant in the brain. There is no doubt the investigations about the distribution of gangliosides in brian and the relationship between gangliosides and Alzheimer’s disease is profound. However, these investigations are full of challenges due to the structural complexity of gangliosides. In this work, the method for efficient extraction and enrichment of gangliosides from brain was established. Moreover, the distribution of gangliosides in brain was obtained by matrix-assisted laser desorption ionization (MALDI) mass spectrometry imaging (MSI). It was found that 3-aminoquinoline (3-AQ) as matrix was well-suited for MALDI MS analysis of gangliosides in negative ion mode. In addition, the pretreatment by ethanol (EtOH) cleaning brain section and the addition of ammonium formate greatly improved the MS signal of gangliosides in the brain section when MALDI MSI analysis was employed. The distribution of ganliosides in cerebral cortex, hippocampus and cerebellum was respectively acquired by electrospray ionization (ESI) MS and MALDI MSI, and the data were compared for reliability evaluation of MALDI MSI. Further, applying MALDI MSI technology, the distribution of gangliosides in amyloid precursor protein transgenic mouse brain was obtained, which may provide a new insight for bioresearch of Alzheimer’s disease (AD).
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Affiliation(s)
- Yangyang Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China
| | - Jun Wang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Jian'an Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China
| | - Juanjuan Han
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China
| | - Shaoxiang Xiong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China
| | - Weidong Yong
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Zhenwen Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China.,Graduate School, University of Chinese Academy of Sciences, Beijing, China
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20
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Buré C, Cacas JL, Badoc A, Mongrand S, Schmitter JM. Branched glycosylated inositolphosphosphingolipid structures in plants revealed by MS(3) analysis. JOURNAL OF MASS SPECTROMETRY : JMS 2016; 51:305-308. [PMID: 27041661 DOI: 10.1002/jms.3758] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 02/05/2016] [Accepted: 02/07/2016] [Indexed: 06/05/2023]
Affiliation(s)
- Corinne Buré
- Chimie Biologie des Membranes et Nanoobjets CBMN-UMR 5248 Centre de Génomique Fonctionnelle, Université Bordeaux Segalen, Université de Bordeaux, 146, rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Jean-Luc Cacas
- UMR1318 INRA-AgroParisTech, Centre INRA de Versailles-Grignon, Institut Jean-Pierre Bourgin, Route de St. Cyr, 78026, Versailles Cedex, France
| | - Alain Badoc
- UFR de Pharmacie, Université Bordeaux Segalen ISVV, GESVAB-EA 3675, 210 Chemin de Leysotte, CS 50008, 33882 Villenave-d'Ornon; Jardin botanique de Talence, 3 avenue Espeleta, 33400, Talence, France
| | - Sébastien Mongrand
- Laboratoire de Biogenèse Membranaire, UMR 5200 CNRS-Université Bordeaux Segalen, Université de Bordeaux, 71, avenue Edouard Bourlaux, 33883, Villenave-d'Ornon Cedex, France
| | - Jean-Marie Schmitter
- Chimie Biologie des Membranes et Nanoobjets CBMN-UMR 5248 Centre de Génomique Fonctionnelle, Université Bordeaux Segalen, Université de Bordeaux, 146, rue Léo Saignat, 33076, Bordeaux Cedex, France
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21
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Škrášková K, Claude E, Jones EA, Towers M, Ellis SR, Heeren RMA. Enhanced capabilities for imaging gangliosides in murine brain with matrix-assisted laser desorption/ionization and desorption electrospray ionization mass spectrometry coupled to ion mobility separation. Methods 2016; 104:69-78. [PMID: 26922843 DOI: 10.1016/j.ymeth.2016.02.014] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 02/03/2016] [Accepted: 02/22/2016] [Indexed: 12/17/2022] Open
Abstract
The increased interest in lipidomics calls for improved yet simplified methods of lipid analysis. Over the past two decades, mass spectrometry imaging (MSI) has been established as a powerful technique for the analysis of molecular distribution of a variety of compounds across tissue surfaces. Matrix-assisted laser desorption/ionization (MALDI) MSI is widely used to study the spatial distribution of common lipids. However, a thorough sample preparation and necessity of vacuum for efficient ionization might hamper its use for high-throughput lipid analysis. Desorption electrospray ionization (DESI) is a relatively young MS technique. In DESI, ionization of molecules occurs under ambient conditions, which alleviates sample preparation. Moreover, DESI does not require the application of an external matrix, making the detection of low mass species more feasible due to the lack of chemical matrix background. However, irrespective of the ionization method, the final information obtained during an MSI experiment is very complex and its analysis becomes challenging. It was shown that coupling MSI to ion mobility separation (IMS) simplifies imaging data interpretation. Here we employed DESI and MALDI MSI for a lipidomic analysis of the murine brain using the same IMS-enabled instrument. We report for the first time on the DESI IMS-MSI of multiply sialylated ganglioside species, as well as their acetylated versions, which we detected directly from the murine brain tissue. We show that poly-sialylated gangliosides can be imaged as multiply charged ions using DESI, while they are clearly separated from the rest of the lipid classes based on their charge state using ion mobility. This represents a major improvement in MSI of intact fragile lipid species. We additionally show that complementary lipid information is reached under particular conditions when DESI is compared to MALDI MSI.
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Affiliation(s)
- Karolina Škrášková
- M4I, The Maastricht MultiModal Molecular Imaging Institute, University of Maastricht, Maastricht, The Netherlands; FOM-Institute AMOLF, Amsterdam, The Netherlands; TI-COAST, Amsterdam, The Netherlands
| | | | - Emrys A Jones
- Waters Corporation, Wilmslow, UK; Imperial College London, London, UK
| | | | - Shane R Ellis
- M4I, The Maastricht MultiModal Molecular Imaging Institute, University of Maastricht, Maastricht, The Netherlands; FOM-Institute AMOLF, Amsterdam, The Netherlands
| | - Ron M A Heeren
- M4I, The Maastricht MultiModal Molecular Imaging Institute, University of Maastricht, Maastricht, The Netherlands; FOM-Institute AMOLF, Amsterdam, The Netherlands; TI-COAST, Amsterdam, The Netherlands.
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22
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Roux A, Muller L, Jackson SN, Post J, Baldwin K, Hoffer B, Balaban CD, Barbacci D, Schultz JA, Gouty S, Cox BM, Woods AS. Mass spectrometry imaging of rat brain lipid profile changes over time following traumatic brain injury. J Neurosci Methods 2016; 272:19-32. [PMID: 26872743 DOI: 10.1016/j.jneumeth.2016.02.004] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 02/01/2016] [Indexed: 01/31/2023]
Abstract
BACKGROUND Mild traumatic brain injury (TBI) is a common public health issue that may contribute to chronic degenerative disorders. Membrane lipids play a key role in tissue responses to injury, both as cell signals and as components of membrane structure and cell signaling. This study demonstrates the ability of high resolution mass spectrometry imaging (MSI) to assess sequences of responses of lipid species in a rat controlled cortical impact model for concussion. NEW METHOD A matrix of implanted silver nanoparticles was implanted superficially in brain sections for matrix-assisted laser desorption (MALDI) imaging of 50μm diameter microdomains across unfixed cryostat sections of rat brain. Ion-mobility time-of-flight MS was used to analyze and map changes over time in brain lipid composition in a rats after Controlled Cortical Impact (CCI) TBI. RESULTS Brain MS images showed changes in sphingolipids near the CCI site, including increased ceramides and decreased sphingomyelins, accompanied by changes in glycerophospholipids and cholesterol derivatives. The kinetics differed for each lipid class; for example ceramides increased as early as 1 day after the injury whereas other lipids changes occurred between 3 and 7 days post injury. COMPARISON WITH EXISTING METHOD(S) Silver nanoparticles MALDI matrix is a sensitive new tool for revealing previously undetectable cellular injury response and remodeling in neural, glial and vascular structure of the brain. CONCLUSIONS Lipid biochemical and structural changes after TBI could help highlighting molecules that can be used to determine the severity of such injuries as well as to evaluate the efficacy of potential treatments.
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Affiliation(s)
- Aurelie Roux
- Structural Biology Unit, Integrative Neuroscience Branch, NIH/NIDA-IRP, Baltimore, MD 21224, United States
| | - Ludovic Muller
- Structural Biology Unit, Integrative Neuroscience Branch, NIH/NIDA-IRP, Baltimore, MD 21224, United States
| | - Shelley N Jackson
- Structural Biology Unit, Integrative Neuroscience Branch, NIH/NIDA-IRP, Baltimore, MD 21224, United States
| | - Jeremy Post
- Structural Biology Unit, Integrative Neuroscience Branch, NIH/NIDA-IRP, Baltimore, MD 21224, United States
| | - Katherine Baldwin
- Structural Biology Unit, Integrative Neuroscience Branch, NIH/NIDA-IRP, Baltimore, MD 21224, United States
| | - Barry Hoffer
- University Hospitals of Cleveland, Cleveland, OH 44106, United States
| | - Carey D Balaban
- Departments of Otolaryngology, Neurobiology, Communication Sciences & Disorders, and Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, United States
| | | | | | - Shawn Gouty
- Center for Neuroscience and Regenerative Medicine, Department of Pharmacology, Uniformed Services University, Bethesda, MD 20814, United States
| | - Brian M Cox
- Center for Neuroscience and Regenerative Medicine, Department of Pharmacology, Uniformed Services University, Bethesda, MD 20814, United States
| | - Amina S Woods
- Structural Biology Unit, Integrative Neuroscience Branch, NIH/NIDA-IRP, Baltimore, MD 21224, United States.
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23
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Park W, Lee D, Cha S. Differentiation of Ganglioside Isomers by MALDI Tandem Mass Spectrometry with Alkali Earth Metal Additives. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Woojin Park
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin 449-791 Korea
| | - Dongkun Lee
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin 449-791 Korea
| | - Sangwon Cha
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin 449-791 Korea
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24
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Saariaho AH, Vuorela A, Freitag TL, Pizza F, Plazzi G, Partinen M, Vaarala O, Meri S. Autoantibodies against ganglioside GM3 are associated with narcolepsy-cataplexy developing after Pandemrix vaccination against 2009 pandemic H1N1 type influenza virus. J Autoimmun 2015; 63:68-75. [PMID: 26227560 DOI: 10.1016/j.jaut.2015.07.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 07/08/2015] [Accepted: 07/10/2015] [Indexed: 11/19/2022]
Abstract
Following the mass vaccinations against pandemic influenza A/H1N1 virus in 2009, a sudden increase in juvenile onset narcolepsy with cataplexy (NC) was detected in several European countries where AS03-adjuvanted Pandemrix vaccine had been used. NC is a chronic neurological disorder characterized by excessive daytime sleepiness and cataplexy. In human NC, the hypocretin-producing neurons in the hypothalamus or the hypocretin signaling pathway are destroyed by an autoimmune reaction. Both genetic (e.g. HLA-DQB1*0602) and environmental risk factors (e.g. Pandemrix) contribute to the disease development, but the underlying and the mediating immunological mechanisms are largely unknown. Influenza virus hemagglutinin is known to bind gangliosides, which serve as host cell virus receptors. Anti-ganglioside antibodies have previously been linked to various neurological disorders, like the Guillain-Barré syndrome which may develop after infection or vaccination. Because of these links we screened sera of NC patients and controls for IgG anti-ganglioside antibodies against 11 human brain gangliosides (GM1, GM2, GM3, GM4, GD1a, GD1b, GD2, GD3, GT1a, GT1b, GQ1b) and a sulfatide by using a line blot assay. Samples from 173 children and adolescents were analyzed: 48 with Pandemrix-associated NC, 20 with NC without Pandemrix association, 57 Pandemrix-vaccinated and 48 unvaccinated healthy children. We found that patients with Pandemrix-associated NC had more frequently (14.6%) anti-GM3 antibodies than vaccinated healthy controls (3.5%) (P = 0.047). Anti-GM3 antibodies were significantly associated with HLA-DQB1*0602 (P = 0.016) both in vaccinated NC patients and controls. In general, anti-ganglioside antibodies were more frequent in vaccinated (18.1%) than in unvaccinated (7.3%) individuals (P = 0.035). Our data suggest that autoimmunity against GM3 is a feature of Pandemrix-associated NC and that autoantibodies against gangliosides were induced by Pandemrix vaccination.
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Affiliation(s)
- Anna-Helena Saariaho
- Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, Helsinki, Finland; Research Program Unit, Immunobiology, University of Helsinki, Helsinki, Finland.
| | - Arja Vuorela
- Department of Vaccines and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland.
| | - Tobias L Freitag
- Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, Helsinki, Finland; Research Program Unit, Immunobiology, University of Helsinki, Helsinki, Finland.
| | - Fabio Pizza
- Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy; IRCCS Instituto delle Scienze Neurologiche di Bologna, ASL di Bologna, Bologna, Italy.
| | - Giuseppe Plazzi
- Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy; IRCCS Instituto delle Scienze Neurologiche di Bologna, ASL di Bologna, Bologna, Italy.
| | - Markku Partinen
- Helsinki Sleep Clinic, Finnish Narcolepsy Research Centre, Vitalmed Research Centre, Helsinki, Finland; Department of Clinical Neurosciences, University of Helsinki, Helsinki, Finland.
| | - Outi Vaarala
- Department of Vaccines and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland.
| | - Seppo Meri
- Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, Helsinki, Finland; Research Program Unit, Immunobiology, University of Helsinki, Helsinki, Finland.
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25
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Groux-Degroote S, Guérardel Y, Julien S, Delannoy P. Gangliosides in breast cancer: New perspectives. BIOCHEMISTRY (MOSCOW) 2015; 80:808-19. [DOI: 10.1134/s0006297915070020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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26
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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27
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MALDI Imaging mass spectrometry: current frontiers and perspectives in pathology research and practice. J Transl Med 2015; 95:422-31. [PMID: 25621874 DOI: 10.1038/labinvest.2014.156] [Citation(s) in RCA: 300] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/07/2014] [Accepted: 11/07/2014] [Indexed: 01/14/2023] Open
Abstract
MALDI Imaging mass spectrometry has entered the field of tissue-based research by providing unique advantages for analyzing tissue specimen in an unprecedented detail. A broad spectrum of analytes ranging from proteins, peptides, protein modification over small molecules, drugs and their metabolites as well as pharmaceutical components, endogenous cell metabolites, lipids, and other analytes are made accessible by this in situ technique in tissue. Some of them were even not accessible in tissues within the histological context before. Thereby, the great advantage of MALDI Imaging is the correlation of molecular information with traditional histology by keeping the spatial localization information of the analytes after mass spectrometric measurement. This method is label-free and allows multiplex analysis of hundreds to thousands of molecules in the very same tissue section simultaneously. Imaging mass spectrometry brings a new quality of molecular data and links the expert discipline of pathology and deep molecular mass spectrometric analysis to tissue-based research. This review will focus on state-of-the-art of MALDI Imaging mass spectrometry, its recent applications by analyzing tissue specimen and the contributions in understanding the biology of disease as well as its perspectives for pathology research and practice.
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28
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Lee D, Cha S. 5-Methoxysalicylic acid matrix for ganglioside analysis with matrix-assisted laser desorption/ionization mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:522-525. [PMID: 25503079 DOI: 10.1007/s13361-014-1037-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 10/22/2014] [Accepted: 10/26/2014] [Indexed: 06/04/2023]
Abstract
In this note, we report that high quality ganglioside profiles with minimal loss of sialic acid residues can be obtained in the positive ion mode by using a 5-methoxysalicylic acid (MSA) matrix for matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS). Our results showed that MSA produced much less sialic acid losses from gangliosides than DHB, although MSA and DHB are differ only by their functional groups at their 5-positions (-OH for DHB and -OCH(3) for MSA). Furthermore, our data also demonstrated that addition of an alkali metal additive was effective for simplifying ganglioside profiles, but not necessary for stabilizing glycosidic bonds of gangliosides if MSA was used as a matrix. This suggests that MALDI MS with MSA has a potential to gain additional benefits from the positive-ion mode analyses without losing performance in ganglioside profiling.
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Affiliation(s)
- Dongkun Lee
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, 449-791, Korea
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Roux A, Muller L, Jackson SN, Baldwin K, Womack V, Pagiazitis JG, O’Rourke JR, Thanos PK, Balaban C, Schultz JA, Volkow ND, Woods AS. Chronic ethanol consumption profoundly alters regional brain ceramide and sphingomyelin content in rodents. ACS Chem Neurosci 2015; 6:247-59. [PMID: 25387107 PMCID: PMC4372063 DOI: 10.1021/cn500174c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
![]()
Ceramides
(CER) are involved in alcohol-induced neuroinflammation.
In a mouse model of chronic alcohol exposure, 16 CER and 18 sphingomyelin
(SM) concentrations from whole brain lipid extracts were measured
using electrospray mass spectrometry. All 18 CER concentrations in
alcohol exposed adults increased significantly (range: 25–607%);
in juveniles, 6 CER decreased (range: −9 to −37%). In
contrast, only three SM decreased in adult and one increased significantly
in juvenile. Next, regional identification at 50 μm spatial
resolution from coronal sections was obtained with matrix implanted
laser desorption/ionization mass spectrometry imaging (MILDI-MSI)
by implanting silver nanoparticulate matrices followed by focused
laser desorption. Most of the CER and SM quantified in whole brain
extracts were detected in MILDI images. Coronal sections from three
brain levels show qualitative regional changes in CER-SM ion intensities,
as a function of group and brain region, in cortex, striatum, accumbens,
habenula, and hippocampus. Highly correlated changes in certain white
matter CER-SM pairs occur in regions across all groups, including
the hippocampus and the lateral (but not medial) cerebellar cortex
of adult mice. Our data provide the first microscale MS evidence of
regional lipid intensity variations induced by alcohol.
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Affiliation(s)
- Aurelie Roux
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland 21224, United States
| | - Ludovic Muller
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland 21224, United States
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Shelley N. Jackson
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland 21224, United States
| | - Katherine Baldwin
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland 21224, United States
| | - Virginia Womack
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland 21224, United States
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - John G. Pagiazitis
- Behavioral Neuropharmacology and Neuroimaging Lab, Department of Psychology, Stony Brook University, Stony Brook, New York 11790, United States
| | - Joseph R. O’Rourke
- Behavioral Neuropharmacology and Neuroimaging Lab, Department of Psychology, Stony Brook University, Stony Brook, New York 11790, United States
| | - Panayotis K. Thanos
- Behavioral Neuropharmacology and Neuroimaging Lab, Department of Psychology, Stony Brook University, Stony Brook, New York 11790, United States
| | - Carey Balaban
- University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | | | - Nora D. Volkow
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland 21224, United States
| | - Amina S. Woods
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland 21224, United States
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30
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Wang X, Han J, Yang J, Pan J, Borchers CH. Matrix coating assisted by an electric field (MCAEF) for enhanced tissue imaging by MALDI-MS. Chem Sci 2015; 6:729-738. [PMID: 28706636 PMCID: PMC5494562 DOI: 10.1039/c4sc01850h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 09/09/2014] [Indexed: 01/13/2023] Open
Abstract
A novel technique, termed matrix coating assisted by an electric field (MCAEF), for enhancing tissue imaging by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) was developed in this study. In this technique a static and uniform electric field is applied to sliced tissue sections during matrix spray-coating, resulting in the enrichment of positively or negatively chargeable analytes in the MALDI matrix layer. Experimental results show that MCAEF not only increased the sensitivity of lipid and protein detection across the board in the subsequent MALDI-MS analyses, but also resulted in successful imaging of a larger number of analytes. MALDI imaging enhancement with MCAEF was observed for various tissues (rat liver, rat brain, and porcine adrenal gland) and with different MALDI matrices (e.g., quercetin, 2-mercaptobenzothiazole, dithranol, 9-aminoacridine, and sinapinic acid) and the sensitivity increases were independent of the solvent compositions and pH values of the matrix solutions. Taking rat brain as an example, MCAEF led to the on-tissue detection and imaging of 648 identified lipids by combining positive and negative ion detection by MALDI-Fourier transform ion cyclotron resonance MS and with quercetin as the matrix, as compared to only 344 lipids without MCAEF. For protein imaging, up to 232 protein signals were successfully detected in rat brain tissue sections by MALDI-time-of-flight MS within a mass range of 3500 to 37 000 Da, as compared to 119 without MCAEF. MCAEF also enabled the detection of higher molecular-weight proteins. These results demonstrate the advantages of MCAEF for overall performance improvements in MALDI imaging and we believe that this technique has the potential to become a standard practice for MALDI tissue imaging.
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Affiliation(s)
- Xiaodong Wang
- University of Victoria - Genome British Columbia Proteomics Centre , Vancouver Island Technology Park, #3101-4464 Markham St. , Victoria , BC V8Z 7X8 , Canada . ; ; Tel: +1-250-483-3221
| | - Jun Han
- University of Victoria - Genome British Columbia Proteomics Centre , Vancouver Island Technology Park, #3101-4464 Markham St. , Victoria , BC V8Z 7X8 , Canada . ; ; Tel: +1-250-483-3221
| | - Juncong Yang
- University of Victoria - Genome British Columbia Proteomics Centre , Vancouver Island Technology Park, #3101-4464 Markham St. , Victoria , BC V8Z 7X8 , Canada . ; ; Tel: +1-250-483-3221
| | - Jingxi Pan
- University of Victoria - Genome British Columbia Proteomics Centre , Vancouver Island Technology Park, #3101-4464 Markham St. , Victoria , BC V8Z 7X8 , Canada . ; ; Tel: +1-250-483-3221
| | - Christoph H Borchers
- University of Victoria - Genome British Columbia Proteomics Centre , Vancouver Island Technology Park, #3101-4464 Markham St. , Victoria , BC V8Z 7X8 , Canada . ; ; Tel: +1-250-483-3221
- Department of Biochemistry and Microbiology , University of Victoria , Petch Building Room 207, 3800 Finnerty Rd. , Victoria , BC V8P 5C2 , Canada
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Abstract
Enriched by a decade of remarkable developments, matrix-assisted laser desorption ionization imaging mass spectrometry (MALDI IMS) has witnessed a phenomenal expansion. Initially introduced for the mapping of peptides and intact proteins from mammalian tissue sections, MALDI IMS applications now extend to a wide range of molecules including peptides, lipids, metabolites and xenobiotics. Technology and methodology are quickly evolving to push the limits of the technique forward. Within a short period of time, numerous protocols and concepts have been developed and introduced in tissue section preparation, nonexhaustively including in situ tissue chemistries and solvent-free matrix depositions. Considering the past progress and current capabilities, this Review aims to cover the different aspects and challenges of tissue section preparation for MALDI IMS.
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Jackson SN, Barbacci D, Egan T, Lewis EK, Schultz JA, Woods AS. MALDI-Ion Mobility Mass Spectrometry of Lipids in Negative Ion Mode. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2014; 6:5001-5007. [PMID: 24999374 PMCID: PMC4078893 DOI: 10.1039/c4ay00320a] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Profiling and imaging MALDI mass spectrometry (MS) allows detection and localization of biomolecules in tissue, of which lipids are a major component. However, due to the in situ nature of this technique, complexity of tissue and need for a chemical matrix, the recorded signal is complex and can be difficult to assign. Ion mobility adds a dimension that provides coarse shape information, separating isobaric lipids, peptides, and oligonucleotides along distinct familial trend lines before mass analysis. Previous work using MALDI-ion mobility mass spectrometry to analyze and image lipids has been conducted mainly in positive ion mode, although several lipid classes ionize preferentially in negative ion mode. This work highlights recent data acquired in negative ion mode to detect glycerophosphoethanolamines (PEs), glycerophosphoserines (PSs), glycerophosphoglycerols (PGs), glycerolphosphoinositols (PIs), glycerophosphates (PAs), sulfatides (STs), and gangliosides from standard tissue extracts and directly from mouse brain tissue. In particular, this study focused on changes in ion mobility based upon lipid head groups, composition of radyl chain (# of carbons and double bonds), diacyl versus plasmalogen species, and hydroxylation of species. Finally, a MALDI-ion mobility imaging run was conducted in negative ion mode, resulting in the successful ion mapping of several lipid species.
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Affiliation(s)
| | - Damon Barbacci
- Integrative Neuroscience, NIDA IRP, NIH, Baltimore, MD 21224, USA
- Ionwerks Inc., Houston, Texas, USA
| | | | | | | | - Amina S. Woods
- Integrative Neuroscience, NIDA IRP, NIH, Baltimore, MD 21224, USA
- Corresponding Author: Amina S. Woods, Ph.D., NIDA IRP, NIH, 333 Cassell Drive, Room 1120, Baltimore, MD 21224, Tel: 443-740-2747, Fax: 443-740-2144,
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Fernández R, Lage S, Abad-García B, Barceló-Coblijn G, Terés S, López DH, Guardiola-Serrano F, Martín ML, Escribá PV, Fernández JA. Analysis of the lipidome of xenografts using MALDI-IMS and UHPLC-ESI-QTOF. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:1237-1246. [PMID: 24760294 DOI: 10.1007/s13361-014-0882-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/10/2014] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
Human tumor xenografts in immunodeficient mice are a very popular model to study the development of cancer and to test new drug candidates. Among the parameters analyzed are the variations in the lipid composition, as they are good indicators of changes in the cellular metabolism. Here, we present a study on the distribution of lipids in xenografts of NCI-H1975 human lung cancer cells, using MALDI imaging mass spectrometry and UHPLC-ESI-QTOF. The identification of lipids directly from the tissue by MALDI was aided by the comparison with identification using ESI ionization in lipid extracts from the same xenografts. Lipids belonging to PCs, PIs, SMs, DAG, TAG, PS, PA, and PG classes were identified and their distribution over the xenograft was determined. Three areas were identified in the xenograft, corresponding to cells in different metabolic stages and to a layer of adipose tissue that covers the xenograft.
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Affiliation(s)
- Roberto Fernández
- Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940, Leioa, Spain
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Amoscato AA, Sparvero LJ, He RR, Watkins S, Bayir H, Kagan VE. Imaging mass spectrometry of diversified cardiolipin molecular species in the brain. Anal Chem 2014; 86:6587-95. [PMID: 24949523 PMCID: PMC4082390 DOI: 10.1021/ac5011876] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 06/10/2014] [Indexed: 01/08/2023]
Abstract
MALDI imaging mass spectrometry (MALDI-IMS) has been used successfully in mapping different lipids in tissue sections, yet existing protocols fail to detect the diverse species of mitochondria-unique cardiolipins (CLs) in the brain which are essential for cellular and mitochondrial physiology. We have developed methods enabling the imaging of individual CLs in brain tissue. This was achieved by eliminating ion suppressive effects by (i) cross-linking carboxyl/amino containing molecules on tissue with 1-ethyl-3-[3-(dimethylamino)propyl]-carbodiimide hydrochloride and (ii) removing highly abundant phosphatidylcholine head groups via phospholipase C treatment. These treatments allowed the detection of CL species at 100 μm resolution and did not affect the amount or molecular species distribution of brain tissue CLs. When combined with augmented matrix application, these modifications allowed the visualization and mapping of multiple CL species in various regions of the brain including the thalamus, hippocampus, and cortex. Areas such as the dentate and stratum radiatum exhibited higher CL signals than other areas within the hippocampal formation. The habenular nuclear (Hb)/dorsal third ventricle (D3 V) and lateral ventricle (LV) areas were identified as CL "hot spots". Our method also allowed structural MS/MS fragmentation and mapping of CLs with identified fatty acid residues and demonstrated a nonrandom distribution of individual oxidizable (polyunsaturated fatty acid containing) and nonoxidizable (nonpolyunsaturated containing) CLs in different anatomical areas of the brain. To our knowledge, this method is the first label-free approach for molecular mapping of diversified CLs in brain tissue.
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Affiliation(s)
- A. A. Amoscato
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
| | - L. J. Sparvero
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
| | - R. R. He
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
- Pharmacy
College, Jinan University, Guangzhou, Guangdong 510632, China
| | - S. Watkins
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
| | - H. Bayir
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
| | - V. E. Kagan
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
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Arafah K, Longuespée R, Desmons A, Kerdraon O, Fournier I, Salzet M. Lipidomics for clinical diagnosis: Dye-Assisted Laser Desorption/Ionization (DALDI) method for lipids detection in MALDI mass spectrometry imaging. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2014; 18:487-98. [PMID: 24905741 DOI: 10.1089/omi.2013.0175] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Lipid-based biomarkers for research and diagnosis are rapidly emerging to unpack the basis of person-to-person and population variations in disease susceptibility, drug and nutritional responses, to name but a few. Hence, with the advent of MALDI Mass Spectrometry Imaging, lipids have begun to be investigated intensively. However, lipids are highly mobile during tissue preparation, and are soluble in the solvent used for matrix preparation or in the fixing fluid such as formalin, resulting in substantial delocalization. In the present article, we investigated as another alternative, the possibility of using specific dyes that can absorb UV wavelengths, in order to desorb the lipids specifically from tissue sections, and are known to immobilize them in tissues. Indeed, after lipid insolubilization with chromate solution or chemical fixation with osmium tetroxide, heterocyclic-based dyes can be directly used without matrix. Taking into account the fact that some dyes have this matrix-free capability, we identified particular dyes dedicated to histological staining of lipids that could be used with MALDI mass spectrometry imaging. We stained tissue sections with either Sudan Black B, Nile Blue A, or Oil Red O. An important advantage of this assay relies on its compatibility with usual practices of histopathological investigation of lipids. As a new method, DALDI stands for Dye-Assisted Laser Desorption Ionization and allows for future clinical and histopathological applications using routine histological protocols. Additionally, this novel methodology was validated in human ovarian cancer biopsies to demonstrate its use as a suitable procedure, for histological diagnosis in lipidomics field.
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Affiliation(s)
- Karim Arafah
- 1 Laboratoire de Protéomique, Réponse Inflammatoire, Spectrométrie de Masse (PRISM), Université de Lille 1 , Cité Scientifique, Villeneuve D'Ascq, France
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36
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Zaima N, Goto-Inoue N, Moriyama T. Matrix-Assisted Laser Desorption/Ionization Imaging Mass Spectrometry: New Technology for Vascular Pathology. J Vasc Res 2014; 51:144-8. [DOI: 10.1159/000362123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 02/11/2014] [Indexed: 01/30/2023] Open
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Shariatgorji M, Svenningsson P, Andrén PE. Mass spectrometry imaging, an emerging technology in neuropsychopharmacology. Neuropsychopharmacology 2014; 39:34-49. [PMID: 23966069 PMCID: PMC3857656 DOI: 10.1038/npp.2013.215] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 07/04/2013] [Accepted: 07/08/2013] [Indexed: 01/03/2023]
Abstract
Mass spectrometry imaging is a powerful tool for directly determining the distribution of proteins, peptides, lipids, neurotransmitters, metabolites and drugs in neural tissue sections in situ. Molecule-specific imaging can be achieved using various ionization techniques that are suited to different applications but which all yield data with high mass accuracies and spatial resolutions. The ability to simultaneously obtain images showing the distributions of chemical species ranging from metal ions to macromolecules makes it possible to explore the chemical organization of a sample and to correlate the results obtained with specific anatomical features. The imaging of biomolecules has provided new insights into multiple neurological diseases, including Parkinson's and Alzheimer's disease. Mass spectrometry imaging can also be used in conjunction with other imaging techniques in order to identify correlations between changes in the distribution of important chemical species and other changes in the properties of the tissue. Here we review the applications of mass spectrometry imaging in neuroscience research and discuss its potential. The results presented demonstrate that mass spectrometry imaging is a useful experimental method with diverse applications in neuroscience.
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Affiliation(s)
- Mohammadreza Shariatgorji
- Department of Pharmaceutical Biosciences, Biomolecular Imaging and Proteomics, National Laboratory for Mass Spectrometry Imaging, Uppsala University, Uppsala, Sweden
| | - Per Svenningsson
- Department of Neurology and Clinical Neuroscience, Centre for Molecular Medicine, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Per E Andrén
- Department of Pharmaceutical Biosciences, Biomolecular Imaging and Proteomics, National Laboratory for Mass Spectrometry Imaging, Uppsala University, Uppsala, Sweden,Department of Pharmaceutical Biosciences, Biomolecular Imaging and Proteomics, National Laboratory for Mass Spectrometry Imaging, Uppsala University, Box 591, Husargatan 3, Uppsala SE-75124, Sweden, Tel: +46 18 471 7206, Fax: +46 70 167 9334, E-mail:
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Wang X, Han J, Pan J, Borchers CH. Comprehensive Imaging of Porcine Adrenal Gland Lipids by MALDI-FTMS Using Quercetin as a Matrix. Anal Chem 2013; 86:638-46. [DOI: 10.1021/ac404044k] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xiaodong Wang
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver Island Technology Park,
#3101-4464 Markham St., Victoria, BC V8Z 7X8, Canada
| | - Jun Han
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver Island Technology Park,
#3101-4464 Markham St., Victoria, BC V8Z 7X8, Canada
| | - Jingxi Pan
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver Island Technology Park,
#3101-4464 Markham St., Victoria, BC V8Z 7X8, Canada
| | - Christoph H. Borchers
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver Island Technology Park,
#3101-4464 Markham St., Victoria, BC V8Z 7X8, Canada
- Department
of Biochemistry and Microbiology, University of Victoria, Petch Building
Room 207, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada
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Goto-Inoue N, Yamada K, Inagaki A, Furuichi Y, Ogino S, Manabe Y, Setou M, Fujii NL. Lipidomics analysis revealed the phospholipid compositional changes in muscle by chronic exercise and high-fat diet. Sci Rep 2013; 3:3267. [PMID: 24253370 PMCID: PMC3834553 DOI: 10.1038/srep03267] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 10/29/2013] [Indexed: 02/08/2023] Open
Abstract
Although it is clear that lipids are responsible for insulin resistance, it is poorly understood what types of lipids are involved. In this study, we verified the characteristic lipid species in skeletal muscle of a chronic exercise training model and a high-fat induced-obesity model. Three different lipidomics analyses revealed phospholipid qualitative changes. As a result, linoleic acid-containing phosphatidylcholine and sphingomyelin and docosahexanoic acid-containing phosphatidylcholine were characterized as chronic exercise training-induced lipids. On the contrary, arachidonic acid-containing phosphatidylcholines, phosphatidylethanolamines, and phosphatidylinositol were characterized as high-fat diet-induced lipids. In addition, minor sphingomyelin, which has long-chain fatty acids, was identified as a high-fat diet-specific lipid. This is the first report to reveal compositional changes in phospholipid molecular species in chronic exercise and high-fat-diet-induced insulin-resistant models. Due to their influence on cell permeability and receptor stability at the cell membrane, these molecules may contribute to the mechanisms underlying insulin sensitivity and several metabolic disorders.
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Affiliation(s)
- Naoko Goto-Inoue
- 1] Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1, Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan [2] Department of Cell Biology and Anatomy, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan
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40
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Vajn K, Viljetić B, Degmečić IV, Schnaar RL, Heffer M. Differential distribution of major brain gangliosides in the adult mouse central nervous system. PLoS One 2013; 8:e75720. [PMID: 24098718 PMCID: PMC3787110 DOI: 10.1371/journal.pone.0075720] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 08/16/2013] [Indexed: 11/24/2022] Open
Abstract
Gangliosides - sialic acid-bearing glycolipids - are major cell surface determinants on neurons and axons. The same four closely related structures, GM1, GD1a, GD1b and GT1b, comprise the majority of total brain gangliosides in mammals and birds. Gangliosides regulate the activities of proteins in the membranes in which they reside, and also act as cell-cell recognition receptors. Understanding the functions of major brain gangliosides requires knowledge of their tissue distribution, which has been accomplished in the past using biochemical and immunohistochemical methods. Armed with new knowledge about the stability and accessibility of gangliosides in tissues and new IgG-class specific monoclonal antibodies, we investigated the detailed tissue distribution of gangliosides in the adult mouse brain. Gangliosides GD1b and GT1b are widely expressed in gray and white matter. In contrast, GM1 is predominately found in white matter and GD1a is specifically expressed in certain brain nuclei/tracts. These findings are considered in relationship to the hypothesis that gangliosides GD1a and GT1b act as receptors for an important axon-myelin recognition protein, myelin-associated glycoprotein (MAG). Mediating axon-myelin interactions is but one potential function of the major brain gangliosides, and more detailed knowledge of their distribution may help direct future functional studies.
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Affiliation(s)
- Katarina Vajn
- Department of Medical Biology, University of Osijek School of Medicine, Osijek, Croatia
| | - Barbara Viljetić
- Department of Chemistry, Biochemistry and Clinical Chemistry, University of Osijek School of Medicine, Osijek, Croatia
| | | | - Ronald L. Schnaar
- Departments of Pharmacology and Neuroscience, The Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Marija Heffer
- Department of Medical Biology, University of Osijek School of Medicine, Osijek, Croatia
- * E-mail:
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Wang X, Han J, Chou A, Yang J, Pan J, Borchers CH. Hydroxyflavones as a New Family of Matrices for MALDI Tissue Imaging. Anal Chem 2013; 85:7566-73. [DOI: 10.1021/ac401595a] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xiaodong Wang
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver
Island Technology Park, #3101-4464 Markham St., Victoria, BC V8Z 7X8,
Canada
| | - Jun Han
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver
Island Technology Park, #3101-4464 Markham St., Victoria, BC V8Z 7X8,
Canada
| | - Albert Chou
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver
Island Technology Park, #3101-4464 Markham St., Victoria, BC V8Z 7X8,
Canada
| | - Juncong Yang
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver
Island Technology Park, #3101-4464 Markham St., Victoria, BC V8Z 7X8,
Canada
| | - Jingxi Pan
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver
Island Technology Park, #3101-4464 Markham St., Victoria, BC V8Z 7X8,
Canada
| | - Christoph H. Borchers
- University of Victoria - Genome British Columbia Proteomics Centre, Vancouver
Island Technology Park, #3101-4464 Markham St., Victoria, BC V8Z 7X8,
Canada
- Department of Biochemistry
and
Microbiology, University of Victoria, Petch
Building Room 207, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada
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Trimpin S, Wang B, Lietz CB, Marshall DD, Richards AL, Inutan ED. New ionization processes and applications for use in mass spectrometry. Crit Rev Biochem Mol Biol 2013; 48:409-29. [DOI: 10.3109/10409238.2013.806887] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Weaver EM, Hummon AB. Imaging mass spectrometry: from tissue sections to cell cultures. Adv Drug Deliv Rev 2013; 65:1039-55. [PMID: 23571020 DOI: 10.1016/j.addr.2013.03.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 03/18/2013] [Accepted: 03/18/2013] [Indexed: 12/31/2022]
Abstract
Imaging mass spectrometry (IMS) has been a useful tool for investigating protein, peptide, drug and metabolite distributions in human and animal tissue samples for almost 15years. The major advantages of this method include a broad mass range, the ability to detect multiple analytes in a single experiment without the use of labels and the preservation of biologically relevant spatial information. Currently the majority of IMS experiments are based on imaging animal tissue sections or small tumor biopsies. An alternative method currently being developed is the application of IMS to three-dimensional cell and tissue culture systems. With new advances in tissue culture and engineering, these model systems are able to provide increasingly accurate, high-throughput and cost-effective models that recapitulate important characteristics of cell and tissue growth in vivo. This review will describe the most recent advances in IMS technology and the bright future of applying IMS to the field of three-dimensional cell and tissue culture.
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Woods AS, Colsch B, Jackson SN, Post J, Baldwin K, Roux A, Hoffer B, Cox BM, Hoffer M, Rubovitch V, Pick CG, Schultz JA, Balaban C. Gangliosides and ceramides change in a mouse model of blast induced traumatic brain injury. ACS Chem Neurosci 2013; 4:594-600. [PMID: 23590251 DOI: 10.1021/cn300216h] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Explosive detonations generate atmospheric pressure changes that produce nonpenetrating blast induced "mild" traumatic brain injury (bTBI). The structural basis for mild bTBI has been extremely controversial. The present study applies matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging to track the distribution of gangliosides in mouse brain tissue that were exposed to very low level of explosive detonations (2.5-5.5 psi peak overpressure). We observed major increases of the ganglioside GM2 in the hippocampus, thalamus, and hypothalamus after a single blast exposure. Moreover, these changes were accompanied by depletion of ceramides. No neurological or brain structural signs of injury could be inferred using standard light microscopic techniques. The first source of variability is generated by the Latency between blast and tissue sampling (peak intensity of the blast wave). These findings suggest that subtle molecular changes in intracellular membranes and plasmalemma compartments may be biomarkers for biological responses to mild bTBI. This is also the first report of a GM2 increase in the brains of mature mice from a nongenetic etiology.
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Affiliation(s)
- Amina S. Woods
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
- Center for Neuroscience and Regenerative Medicine, Rockville, Maryland, United States
| | - Benoit Colsch
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
| | - Shelley N. Jackson
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
| | - Jeremy Post
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
- Center for Neuroscience and Regenerative Medicine, Rockville, Maryland, United States
| | - Kathrine Baldwin
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
| | - Aurelie Roux
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
| | - Barry Hoffer
- Case Western Reserve University, Cleveland, Ohio, United States
| | - Brian M. Cox
- Uniformed Services University, Bethesda, Maryland, United States
- Center for Neuroscience and Regenerative Medicine, Rockville, Maryland, United States
| | - Michael Hoffer
- U.S. Naval Hospital, San Diego, California,
United States
| | | | | | | | - Carey Balaban
- University of Pittsburgh, Pittsburgh, Pennsylvania, United States
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Zhang Y, Yuan J, Song J, Wang Z, Huang L. An efficient method for selectively imaging and quantifying in situ the expression of sialylated glycoproteins on living cells. Glycobiology 2012; 23:643-53. [PMID: 23172875 DOI: 10.1093/glycob/cws148] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A simple and efficient method for selectively imaging and monitoring in situ the expression of sialylated glycoproteins on living cells has been developed. Treating living cells by mild periodate oxidation to selectively generate aldehydes on sialylated glycoproteins, followed by direct labeling of aldehydes with a commercially available fluorescent tag, fluorescein-5-thiosemicarbazide (FTSC), allows in situ imaging and quantification of sialylated glycoproteins on living cells. Under optimum reaction conditions, the periodate oxidation-based FTSC ligation (PF) strategy could be completed within 40 min. The cells undergoing the PF assay revealed a 91% viability and a fairly high-level of metabolic activity. Compared with current labeling methods, the PF assay proved to be a simpler and faster means of imaging sialylated glycoproteins on living cells. The PF assay has been successfully applied to imaging the location and quantification of the abundance of sialylated glycoproteins on tumor and normal cells. Our results demonstrated the methodological significance in clinical diagnosis and functional elucidation studies.
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Affiliation(s)
- Ying Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Sciences, Northwest University, 229 Northern Taibai Road, Xi'an 710069, PR China
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TARGETED MASS spectrometry Imaging: Specific Targeting Mass Spectrometry imaging technologies from history to perspective. ACTA ACUST UNITED AC 2012; 47:133-74. [DOI: 10.1016/j.proghi.2012.08.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2012] [Indexed: 12/28/2022]
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Lee H, Lerno LA, Choe Y, Chu CS, Gillies LA, Grimm R, Lebrilla CB, German JB. Multiple precursor ion scanning of gangliosides and sulfatides with a reversed-phase microfluidic chip and quadrupole time-of-flight mass spectrometry. Anal Chem 2012; 84:5905-12. [PMID: 22697387 PMCID: PMC3402638 DOI: 10.1021/ac300254d] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Precise profiling of polar lipids including gangliosides and sulfatides is a necessary step in understanding the diverse physiological role of these lipids. We have established an efficient method for the profiling of polar lipids using reversed-phase nano high-performance liquid chromatography microfluidic chip quadrupole time-of-flight mass spectrometry (nano-HPLC-chip Q-TOF/MS). A microfluidic chip design provides improved chromatographic performance, efficient separation, and stable nanospray while the advanced high-resolution mass spectrometer allowed for the identification of complex isobaric polar lipids such as NeuAc- and NeuGc-containing gangliosides. Lipid classes were identified based on the characteristic fragmentation product ions generated during data-dependent tandem mass spectrometry (MS/MS) experiments. Each class was monitored by a postprocessing precursor ion scan. Relatively simple quantitation and identification of intact ions was possible due to the reproducible retention times provided by the nano-HPLC chip. The method described in this paper was used to profile polar lipids from mouse brain, which was found to contain 17 gangliosides and 13 sulfatides. Types and linkages of the monosaccharides and their acetyl modifications were identified by low-energy collision-induced dissociation (CID) (40 V), and the type of sphingosine base was identified by higher energy CID (80 V). Accurate mass measurements and chromatography unveiled the degree of unsaturation and hydroxylation in the ceramide lipid tails.
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Affiliation(s)
- Hyeyoung Lee
- Department of Food Science and Technology, University of California, Davis, CA 95616, United States
| | - Larry A. Lerno
- Department of Chemistry, University of California, Davis, CA 95616, United States
| | - Youngshik Choe
- Department of Neurology, University of California, San Francisco, CA 94158, United States
| | - Caroline S. Chu
- Department of Chemistry, University of California, Davis, CA 95616, United States
| | - Laura A. Gillies
- Department of Food Science and Technology, University of California, Davis, CA 95616, United States
| | - Rudolf Grimm
- Robert Mondavi Institute for Wine and Food Science, University of California, Davis, CA 95616, United States
- Agilent Technologies, Life Science Group, Santa Clara, CA 95051, United States
| | - Carlito B. Lebrilla
- Department of Chemistry, University of California, Davis, CA 95616, United States
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA 95616, United States
| | - J. Bruce German
- Department of Food Science and Technology, University of California, Davis, CA 95616, United States
- Foods for Health Institute, University of California, Davis, CA 95616, United States
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Schober Y, Guenther S, Spengler B, Römpp A. High-resolution matrix-assisted laser desorption/ionization imaging of tryptic peptides from tissue. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:1141-6. [PMID: 22467465 DOI: 10.1002/rcm.6192] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
RATIONALE The analysis of proteins by mass spectrometry imaging is an important biomedical application as spatial distributions can be used to identify markers for pathological processes. The direct detection and identification of proteins on tissue can be hindered by a number of factors including limited mass range and fragmentation efficiency as well as incompatibility with formalin-fixed samples. METHODS To overcome some of these limitations, on-tissue digestion of proteins was followed by detection of the resulting peptides. Trypsin was applied by a spraying device. Matrix-assisted laser desorption/ionization (MALDI) imaging experiments were performed with a home-built atmospheric-pressure imaging source attached to a LTQ Orbitrap mass spectrometer. The mass accuracy under imaging conditions was better than 3 ppm RMS. This allowed for confident identification of tryptic peptides by comparison with liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) measurements of an adjacent mouse brain section. RESULTS A spatial resolution of 50 µm was obtained for tryptic peptides on tissue. Several tryptic peptides of myelin showed matching spatial distributions, and numerous tryptic peptides of other proteins were identified. MS images were generated with a bin size (mass range used for image generation) of Δm/z = 0.01 u. Examples demonstrate that MS images with lower selectivity can result in misleading information about the spatial distribution of tryptic peptides. CONCLUSIONS The presented method combines a significantly improved spatial resolution for tryptic peptides with low-ppm mass accuracy in a single experiment and thus provides highly reliable and specific information.
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Affiliation(s)
- Yvonne Schober
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, Schubertstrasse 60, 35392, Giessen, Germany
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Recent advances in sialic acid-focused glycomics. J Proteomics 2012; 75:3098-112. [PMID: 22513219 DOI: 10.1016/j.jprot.2012.03.050] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 03/23/2012] [Accepted: 03/27/2012] [Indexed: 01/24/2023]
Abstract
Recent emergences of glycobiology, glycotechnology and glycomics have been clarifying enormous roles of carbohydrates in biological recognition systems. For example, cell surface carbohydrates existing as glycoconjugates (glycolipids, glycoproteins and proteoglycans) play crucial roles in cell-cell communication, cell proliferation and differentiation, tumor metastasis, inflammatory response or viral infection. In particular, sialic acids (SAs) existing as terminal residues in carbohydrate chains on cell surface are involved in signal recognition and adhesion to ligands, antibodies, enzymes and microbes. In addition, plasma free SAs and sialoglycans have shown great potential for disease biomarker discovery. Therefore, the development of efficient analytical methods for structural and functional studies of SAs and sialylglycans are very important and highly demanded. The problems of SAs and sialylglycans analysis are vanishingly small sample amount, complicated and unstable structures, and complex mixtures. Nevertheless, in the past decade, mass spectrometry in combination with chemical derivatization and modern separation methodologies has become a powerful and versatile technique for structural analysis of SAs and sialylglycans. This review summarizes these recent advances in glycomic studies on SAs and sialylglycans. Specially, derivatization and capturing of SAs and sialylglycans combined with mass spectrometry analysis are highlighted.
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