1
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Hou L, Wang N, Sun T, Wang X. Neuropeptide regulations on behavioral plasticity in social insects. CURRENT OPINION IN INSECT SCIENCE 2023; 60:101119. [PMID: 37741615 DOI: 10.1016/j.cois.2023.101119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 09/25/2023]
Abstract
Social insects demonstrate remarkable behavioral flexibility in response to complex external and social environments. One of the most striking examples of this adaptability is the context-dependent division of labor among workers of bees and ants. Neuropeptides, the brain's most diverse group of messenger molecules, play an essential role in modulating this phenotypic plasticity related to labor division in social insects. Integrated omics research and mass spectrometry imaging technology have greatly accelerated the identification and spatiotemporal analysis of neuropeptides. Moreover, key roles of several neuropeptides in age- and caste-dependent behavioral plasticity have been uncovered. This review summarizes recent advances in the characterization, expression, distribution, and functions of neuropeptides in controlling behavioral plasticity in social insects, particularly bees and ants. The article concludes with a discussion of future directions and challenges in understanding the regulation of social behavior by neuropeptides.
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Affiliation(s)
- Li Hou
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, PR China; CAS Centre for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, PR China.
| | - Nanying Wang
- College of Life Sciences, Hebei University, Baoding 071002, China
| | - Tianle Sun
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, PR China; CAS Centre for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, PR China
| | - Xianhui Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, PR China; CAS Centre for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, PR China.
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2
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Phetsanthad A, Vu NQ, Yu Q, Buchberger AR, Chen Z, Keller C, Li L. Recent advances in mass spectrometry analysis of neuropeptides. MASS SPECTROMETRY REVIEWS 2023; 42:706-750. [PMID: 34558119 PMCID: PMC9067165 DOI: 10.1002/mas.21734] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/22/2021] [Accepted: 08/28/2021] [Indexed: 05/08/2023]
Abstract
Due to their involvement in numerous biochemical pathways, neuropeptides have been the focus of many recent research studies. Unfortunately, classic analytical methods, such as western blots and enzyme-linked immunosorbent assays, are extremely limited in terms of global investigations, leading researchers to search for more advanced techniques capable of probing the entire neuropeptidome of an organism. With recent technological advances, mass spectrometry (MS) has provided methodology to gain global knowledge of a neuropeptidome on a spatial, temporal, and quantitative level. This review will cover key considerations for the analysis of neuropeptides by MS, including sample preparation strategies, instrumental advances for identification, structural characterization, and imaging; insightful functional studies; and newly developed absolute and relative quantitation strategies. While many discoveries have been made with MS, the methodology is still in its infancy. Many of the current challenges and areas that need development will also be highlighted in this review.
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Affiliation(s)
- Ashley Phetsanthad
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Nhu Q. Vu
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Qing Yu
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705, USA
| | - Amanda R. Buchberger
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Zhengwei Chen
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Caitlin Keller
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705, USA
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3
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Shimma S. Mass Spectrometry Imaging. Mass Spectrom (Tokyo) 2022; 11:A0102. [PMID: 35291501 PMCID: PMC8900255 DOI: 10.5702/massspectrometry.a0102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/21/2021] [Indexed: 11/23/2022] Open
Abstract
Mass spectrometry imaging (MSI) is a technique for obtaining information on the distribution of various molecules by performing mass spectrometry directly on the sample surface. The applications range from small molecules such as lipids to large molecules such as proteins. It is also possible to detect pharmaceuticals and elemental isotopes in interstellar matter. This review will introduce various applications of MSI with examples.
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Affiliation(s)
- Shuichi Shimma
- Department of Biotechnology, Graduate School of Engineering, Osaka University
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4
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Wood EA, Stopka SA, Zhang L, Mattson S, Maasz G, Pirger Z, Vertes A. Neuropeptide Localization in Lymnaea stagnalis: From the Central Nervous System to Subcellular Compartments. Front Mol Neurosci 2021; 14:670303. [PMID: 34093125 PMCID: PMC8172996 DOI: 10.3389/fnmol.2021.670303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/09/2021] [Indexed: 12/02/2022] Open
Abstract
Due to the relatively small number of neurons (few tens of thousands), the well-established multipurpose model organism Lymnaea stagnalis, great pond snail, has been extensively used to study the functioning of the nervous system. Unlike the more complex brains of higher organisms, L. stagnalis has a relatively simple central nervous system (CNS) with well-defined circuits (e.g., feeding, locomotion, learning, and memory) and identified individual neurons (e.g., cerebral giant cell, CGC), which generate behavioral patterns. Accumulating information from electrophysiological experiments maps the network of neuronal connections and the neuronal circuits responsible for basic life functions. Chemical signaling between synaptic-coupled neurons is underpinned by neurotransmitters and neuropeptides. This review looks at the rapidly expanding contributions of mass spectrometry (MS) to neuropeptide discovery and identification at different granularity of CNS organization. Abundances and distributions of neuropeptides in the whole CNS, eleven interconnected ganglia, neuronal clusters, single neurons, and subcellular compartments are captured by MS imaging and single cell analysis techniques. Combining neuropeptide expression and electrophysiological data, and aided by genomic and transcriptomic information, the molecular basis of CNS-controlled biological functions is increasingly revealed.
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Affiliation(s)
- Ellen A. Wood
- Department of Chemistry, The George Washington University, Washington, DC, United States
| | - Sylwia A. Stopka
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Linwen Zhang
- Department of Chemistry, The George Washington University, Washington, DC, United States
| | - Sara Mattson
- Department of Chemistry, The George Washington University, Washington, DC, United States
| | - Gabor Maasz
- Balaton Limnological Research Institute, Eötvös Loránd Research Network (ELKH), Tihany, Hungary
- Soós Ernő Research and Development Center, University of Pannonia, Nagykanizsa, Hungary
| | - Zsolt Pirger
- Balaton Limnological Research Institute, Eötvös Loránd Research Network (ELKH), Tihany, Hungary
| | - Akos Vertes
- Department of Chemistry, The George Washington University, Washington, DC, United States
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5
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Habenstein J, Schmitt F, Liessem S, Ly A, Trede D, Wegener C, Predel R, Rössler W, Neupert S. Transcriptomic, peptidomic, and mass spectrometry imaging analysis of the brain in the ant Cataglyphis nodus. J Neurochem 2021; 158:391-412. [PMID: 33704768 DOI: 10.1111/jnc.15346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 12/16/2022]
Abstract
Behavioral flexibility is an important cornerstone for the ecological success of animals. Social Cataglyphis nodus ants with their age-related polyethism characterized by age-related behavioral phenotypes represent a prime example for behavioral flexibility. We propose neuropeptides as powerful candidates for the flexible modulation of age-related behavioral transitions in individual ants. As the neuropeptidome of C. nodus was unknown, we collected a comprehensive peptidomic data set obtained by transcriptome analysis of the ants' central nervous system combined with brain extract analysis by Q-Exactive Orbitrap mass spectrometry (MS) and direct tissue profiling of different regions of the brain by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) MS. In total, we identified 71 peptides with likely bioactive function, encoded on 49 neuropeptide-, neuropeptide-like, and protein hormone prepropeptide genes, including a novel neuropeptide-like gene (fliktin). We next characterized the spatial distribution of a subset of peptides encoded on 16 precursor proteins with high resolution by MALDI MS imaging (MALDI MSI) on 14 µm brain sections. The accuracy of our MSI data were confirmed by matching the immunostaining patterns for tachykinins with MSI ion images from consecutive brain sections. Our data provide a solid framework for future research into spatially resolved qualitative and quantitative peptidomic changes associated with stage-specific behavioral transitions and the functional role of neuropeptides in Cataglyphis ants.
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Affiliation(s)
- Jens Habenstein
- Behavioral Physiology and Sociobiology (Zoology II), University of Würzburg, Würzburg, Germany
| | - Franziska Schmitt
- Behavioral Physiology and Sociobiology (Zoology II), University of Würzburg, Würzburg, Germany
| | - Sander Liessem
- Department of Biology, Institute for Zoology, University of Cologne, Cologne, Germany
| | - Alice Ly
- Bruker Daltonik GmbH, Bremen, Germany
| | - Dennis Trede
- SCiLS, Zweigniederlassung Bremen der Bruker Daltonik GmbH, Bremen, Germany
| | - Christian Wegener
- Theodor-Boveri-Institute, Neurobiology and Genetics, Würzburg Insect Research, University of Würzburg, Würzburg, Germany
| | - Reinhard Predel
- Department of Biology, Institute for Zoology, University of Cologne, Cologne, Germany
| | - Wolfgang Rössler
- Behavioral Physiology and Sociobiology (Zoology II), University of Würzburg, Würzburg, Germany
| | - Susanne Neupert
- Department of Biology, Institute for Zoology, University of Cologne, Cologne, Germany.,Department of Biology, University of Kassel, Kassel, Germany
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6
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Keller C, Gemperline E, Li L. MALDI Mass Spectrometry Imaging of Peptides in Medicago truncatula Root Nodules. Methods Mol Biol 2020; 2139:341-351. [PMID: 32462598 PMCID: PMC7430052 DOI: 10.1007/978-1-0716-0528-8_25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Mass spectrometry imaging is routinely used to visualize the distributions of biomolecules in tissue sections. In plants, mass spectrometry imaging of metabolites is more often conducted, but the imaging of larger molecules is less frequently performed despite the importance of proteins and endogenous peptides to the plant. Here, we describe a matrix-assisted laser desorption/ionization mass spectrometry imaging method for the imaging of peptides in Medicago truncatula root nodules. Sample preparation steps including embedding in gelatin, sectioning, and matrix application are described. The method described is employed to determine the spatial distribution of hundreds of peptide peaks.
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Affiliation(s)
- Caitlin Keller
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Erin Gemperline
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA. .,School of Pharmacy, University of Wisconsin-Madison, Madison, WI, USA.
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7
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Ly A, Ragionieri L, Liessem S, Becker M, Deininger SO, Neupert S, Predel R. Enhanced Coverage of Insect Neuropeptides in Tissue Sections by an Optimized Mass-Spectrometry-Imaging Protocol. Anal Chem 2019; 91:1980-1988. [DOI: 10.1021/acs.analchem.8b04304] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alice Ly
- Bruker Daltonik GmbH, Fahrenheitstraße 4, 28359 Bremen, Germany
| | - Lapo Ragionieri
- Department for Biology, Institute of Zoology, University of Cologne, 50674 Cologne, Germany
| | - Sander Liessem
- Department for Biology, Institute of Zoology, University of Cologne, 50674 Cologne, Germany
| | - Michael Becker
- Bruker Daltonik GmbH, Fahrenheitstraße 4, 28359 Bremen, Germany
| | | | - Susanne Neupert
- Department for Biology, Institute of Zoology, University of Cologne, 50674 Cologne, Germany
| | - Reinhard Predel
- Department for Biology, Institute of Zoology, University of Cologne, 50674 Cologne, Germany
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8
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Keller C, Maeda J, Jayaraman D, Chakraborty S, Sussman MR, Harris JM, Ané JM, Li L. Comparison of Vacuum MALDI and AP-MALDI Platforms for the Mass Spectrometry Imaging of Metabolites Involved in Salt Stress in Medicago truncatula. FRONTIERS IN PLANT SCIENCE 2018; 9:1238. [PMID: 30210517 PMCID: PMC6121006 DOI: 10.3389/fpls.2018.01238] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 08/06/2018] [Indexed: 05/23/2023]
Abstract
Matrix-assisted laser desorption/ionization-mass spectrometry imaging (MALDI-MSI) is routinely used to determine the spatial distributions of various biomolecules in tissues. Recently, there has been an increased interest in creating higher resolution images using sources with more focused beams. One such source, an atmospheric pressure (AP) MALDI source from MassTech, has a laser capable of reaching spatial resolutions of 10 μm. Here, the AP-MALDI source coupled with a Q Exactive HF Orbitrap platform is compared to the commercial MALDI LTQ Orbitrap XL system using Medicago truncatula root nodules. AP-MALDI parameters, such as the S-lens value, capillary temperature, and spray voltage, were optimized on the Q Exactive-HF platform for optimal detection of plant metabolites. The performance of the two systems was evaluated for sensitivity, spatial resolution, and overall ability to detect plant metabolites. The commercial MALDI LTQ Orbitrap XL was superior regarding the number of compounds detected, as at least two times more m/z were detected compared to the AP-MALDI system. However, although the AP-MALDI source requires a spatial resolution higher than 10 μm to get the best signal, the spatial resolution at 30 μm is still superior compared to the 75 μm spatial resolution achieved on the MALDI platform. The AP-MALDI system was also used to investigate the metabolites present in M. truncatula roots and root nodules under high salt and low salt conditions. A discriminative analysis with SCiLS software revealed m/z ions specific to the control and salt conditions. This analysis revealed 44 m/z ions present at relatively higher abundances in the control samples, and 77 m/z enriched in the salt samples. Liquid chromatography-tandem MS was performed to determine the putative molecular identities of some of the mass ions enriched in each sample, including, asparagine, adenosine, and nicotianamine in the control samples, and arginine and soyasaponin I in the salt treated samples.
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Affiliation(s)
- Caitlin Keller
- Department of Chemistry, University of Wisconsin–Madison, Madison, WI, United States
| | - Junko Maeda
- Department of Agronomy, University of Wisconsin–Madison, Madison, WI, United States
| | | | - Sanhita Chakraborty
- Department of Plant Biology, University of Vermont, Burlington, VT, United States
| | - Michael R. Sussman
- Department of Biochemistry, University of Wisconsin–Madison, Madison, WI, United States
| | - Jeanne M. Harris
- Department of Plant Biology, University of Vermont, Burlington, VT, United States
| | - Jean-Michel Ané
- Department of Agronomy, University of Wisconsin–Madison, Madison, WI, United States
- Department of Bacteriology, University of Wisconsin–Madison, Madison, WI, United States
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin–Madison, Madison, WI, United States
- School of Pharmacy, University of Wisconsin–Madison, Madison, WI, United States
- *Correspondence: Lingjun Li, ;
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9
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Ong TH, Tillmaand EG, Makurath M, Rubakhin SS, Sweedler JV. Mass spectrometry-based characterization of endogenous peptides and metabolites in small volume samples. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2015; 1854:732-40. [PMID: 25617659 DOI: 10.1016/j.bbapap.2015.01.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/22/2014] [Accepted: 01/16/2015] [Indexed: 12/22/2022]
Abstract
Technologies to assay single cells and their extracellular microenvironments are valuable in elucidating biological function, but there are challenges. Sample volumes are low, the physicochemical parameters of the analytes vary widely, and the cellular environment is chemically complex. In addition, the inherent difficulty of isolating individual cells and handling small volume samples complicates many experimental protocols. Here we highlight a number of mass spectrometry (MS)-based measurement approaches for characterizing the chemical content of small volume analytes, with a focus on methods used to detect intracellular and extracellular metabolites and peptides from samples as small as individual cells. MS has become one of the most effective means for analyzing small biological samples due to its high sensitivity, low analyte consumption, compatibility with a wide array of sampling approaches, and ability to detect a large number of analytes with different properties without preselection. Having access to a flexible portfolio of MS-based methods allows quantitative, qualitative, untargeted, targeted, multiplexed, and spatially resolved investigations of single cells and their similarly scaled extracellular environments. Combining MS with on-line and off-line sample conditioning tools, such as microfluidic and capillary electrophoresis systems, significantly increases the analytical coverage of the sample's metabolome and peptidome, and improves individual analyte characterization/identification. Small volume assays help to reveal the causes and manifestations of biological and pathological variability, as well as the functional heterogeneity of individual cells within their microenvironments and within cellular populations. This article is part of a Special Issue entitled: Neuroproteomics: Applications in Neuroscience and Neurology.
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Affiliation(s)
- Ta-Hsuan Ong
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Emily G Tillmaand
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Monika Makurath
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Stanislav S Rubakhin
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Jonathan V Sweedler
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States.
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10
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Chen R, Ouyang C, Xiao M, Li L. In situ identification and mapping of neuropeptides from the stomatogastric nervous system of Cancer borealis. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2014; 28:2437-2444. [PMID: 25303472 PMCID: PMC4216564 DOI: 10.1002/rcm.7037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 08/26/2014] [Accepted: 08/31/2014] [Indexed: 06/02/2023]
Abstract
RATIONALE The crustacean stomatogastric nervous system (STNS) is a classic experimental model to derive basic knowledge about neuronal functions and how they coordinate with each other to generate neural circuits. To investigate the components of the neuromodulators and how they are distributed in such a system is essential to understand the underlying mechanism. In this study, in situ mass spectrometry based techniques were employed to fulfill this goal. METHODS Offline high-performance liquid chromatography (HPLC) separation was coupled with matrix-assisted laser desorption/ionization time-of-flight/time-of-flight (MALDI-TOF/TOF) to analyze the neuropeptides in the stomatogastric ganglion (STG) tissue extract from the Jonah crab Cancer borealis. Direct tissue analysis was employed to investigate the neuropeptides present in the STNS. MALDI imaging was also applied to map the localization of multiple neuropeptide families in the STG and the upstream nerve fibers. RESULTS Fifty-seven neuropeptides were detected from a single desheathed STG using direct tissue analysis, and they were from eleven different neuropeptide families, including FaRP, AST-A, AST-B, etc. Differential neuropeptide profiles from three different types of ganglia and two types of nerve fiber tissues from the STNS were documented. The direct tissue analysis was shown better for studying neuropeptides from small neural organs like the STG as compared to the large-scale HPLC/MALDI analysis. MALDI images were also acquired to study the distribution of neuropeptides in the STG. CONCLUSIONS In this study, the components and distribution of neuropeptides have been analyzed in the STNS from C. borealis using direct tissue profiling and MALDI imaging. The results show that the direct tissue analysis of desheathed neural tissues can provide higher sensitivity for neuropeptide study compared to large-scale HPLC/MALDI analysis of pooled tissues. The results are valuable for understanding the functions of neuropeptides in neural network generation.
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Affiliation(s)
- Ruibing Chen
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Chuanzi Ouyang
- Department of Chemistry and Pharmacy School, University of Wisconsin at Madison, WI 53705, USA
| | - Mingming Xiao
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Lingjun Li
- Department of Chemistry and Pharmacy School, University of Wisconsin at Madison, WI 53705, USA
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11
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Mass spectrometric analysis of spatio-temporal dynamics of crustacean neuropeptides. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1854:798-811. [PMID: 25448012 DOI: 10.1016/j.bbapap.2014.10.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 10/23/2014] [Accepted: 10/28/2014] [Indexed: 12/13/2022]
Abstract
Neuropeptides represent one of the largest classes of signaling molecules used by nervous systems to regulate a wide range of physiological processes. Over the past several years, mass spectrometry (MS)-based strategies have revolutionized the discovery of neuropeptides in numerous model organisms, especially in decapod crustaceans. Here, we focus our discussion on recent advances in the use of MS-based techniques to map neuropeptides in the spatial domain and monitoring their dynamic changes in the temporal domain. These MS-enabled investigations provide valuable information about the distribution, secretion and potential function of neuropeptides with high molecular specificity and sensitivity. In situ MS imaging and in vivo microdialysis are highlighted as key technologies for probing spatio-temporal dynamics of neuropeptides in the crustacean nervous system. This review summarizes the latest advancement in MS-based methodologies for neuropeptide analysis including typical workflow and sample preparation strategies as well as major neuropeptide families discovered in decapod crustaceans. This article is part of a Special Issue entitled: Neuroproteomics: Applications in Neuroscience and Neurology.
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12
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Chen R, Xiao M, Buchberger A, Li L. Quantitative neuropeptidomics study of the effects of temperature change in the crab Cancer borealis. J Proteome Res 2014; 13:5767-76. [PMID: 25214466 PMCID: PMC4261957 DOI: 10.1021/pr500742q] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Temperature changes influence the
reaction rates of all biological
processes, which can pose dramatic challenges to cold-blooded organisms,
and the capability to adapt to temperature fluctuations is crucial
for the survival of these animals. In order to understand the roles
that neuropeptides play in the temperature stress response, we employed
a mass spectrometry-based approach to investigate the neuropeptide
changes associated with acute temperature elevation in three neural
tissues from the Jonah crab Cancer borealis. At high temperature, members from two neuropeptide families, including
RFamide and RYamide, were observed to be significantly reduced in
one of the neuroendocrine structures, the pericardial organ, while
several orcokinin peptides were detected to be decreased in another
major neuroendocrine organ, the sinus gland. These results implicate
that the observed neuropeptides may be involved with temperature perturbation
response via hormonal regulation. Furthermore, a temperature stress
marker peptide with the primary sequence of SFRRMGGKAQ (m/z 1137.7) was detected and de novo sequenced in
the circulating fluid (hemolymph) from animals under thermal perturbation.
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Affiliation(s)
- Ruibing Chen
- Research Center of Basic Medical Sciences, Tianjin Medical University , Tianjin 300070, China
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13
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Shimma S, Sugiura Y. Effective Sample Preparations in Imaging Mass Spectrometry. Mass Spectrom (Tokyo) 2014; 3:S0029. [PMID: 26819901 DOI: 10.5702/massspectrometry.s0029] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 01/08/2014] [Indexed: 01/19/2023] Open
Abstract
Matrix-assisted laser desorption/ionization (MALDI) imaging mass spectrometry (IMS) can be used to visualize the distribution of biomolecules (proteins, peptides, metabolites) and drugs on tissue surfaces. In MALDI-IMS, sample preparation is crucial for successful results. A variety of conditions, such as tissue sampling methods, tissue thickness and matrix application procedure can have an impact on the results. In this review, we summarize each sample preparation step in an orderly sequence with practical examples. In addition, we discuss the importance of the organic solvent used in the matrix solution. The composition of the organic solvent used in the matrix solution is critical for achieving a high sensitivity in this procedure.
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Affiliation(s)
- Shuichi Shimma
- Division of Translational Research, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center; Division of Clinical Pharmacology Group for Translational Research Support Core, National Cancer Center Research Institute
| | - Yuki Sugiura
- Department of Biochemistry, Keio University School of Medicine
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14
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Wang N, Tang Y, Chen L, Li L. Microbore liquid chromatography ultraviolet detection for quantification of total peptide amount and its application for assessing sample quality in shotgun proteome analysis of hundreds of cells. J Chromatogr A 2014; 1338:51-7. [PMID: 24630977 DOI: 10.1016/j.chroma.2014.02.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 02/15/2014] [Accepted: 02/17/2014] [Indexed: 11/30/2022]
Abstract
Mass spectrometric profiling of the proteome of a small number of cells requires not only a sensitive instrument for protein/peptide separation and detection, but also a robust sample preparation protocol to process a very small amount of proteins (<1μg) present in few cells. We have developed and evaluated the performance of a microbore liquid chromatography (LC) UV detection system for quantifying the total amount of peptides in a shotgun proteome analysis workflow that is tailored for the analysis of hundreds of cancer cells. Upon the sample injection into a 1-mm-diameter reversed phase column, a step-gradient was used to first remove salts and other impurities and then elute the peptides quickly without much separation. The UV absorbance of eluted peptides at 214nm was used for peptide quantification with the aid of a calibration curve of a tryptic digest of a mixture of four standard proteins. Two linear calibration regions could be obtained in the peptide amount ranging from 0.03μg to 0.3μg and from 0.6μg to 5μg. The limit of quantification (LOQ) was determined to be 30ng (or 39ng in the linear calibration range). However, the presence of background proteins, mainly keratins, introduced during the sample preparation process was found to be the limiting factor in quantifying a lower amount of peptides from a cell lysate digest. With background absorbance from the digest of contaminant proteins in a solution, the LOQ was found to be 200ng. This nondestructive microbore LC-UV method should be useful in assessing sample quality during the development and applications of an efficient sample preparation method for proteome analysis of a small number of cells. As an example, this method was used for quantifying the peptides generated from breast cancer MCF-7 cell extracts with a limited number of cells: 250, 500 and 1000 cells. Using capillary LC quadrupole time-of-flight mass spectrometry, 81-126, 122-154 and 256-282 proteins could be identified from 250, 500, and 1000 cells, respectively, in duplicate experiments. This method was also applied for the analysis of biological triplicate samples of MCF-7 cells. The average numbers of peptides and proteins detected from the experimental triplicate analyses of biological triplicate samples were 400±71 (9 datasets) and 124±14, respectively, from 250 cells, and 531±44 and 162±16, respectively, from 500 cells.
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Affiliation(s)
- Nan Wang
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Yanan Tang
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Lu Chen
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Liang Li
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada.
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15
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Romanova EV, Aerts JT, Croushore CA, Sweedler JV. Small-volume analysis of cell-cell signaling molecules in the brain. Neuropsychopharmacology 2014; 39:50-64. [PMID: 23748227 PMCID: PMC3857641 DOI: 10.1038/npp.2013.145] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 04/26/2013] [Accepted: 05/06/2013] [Indexed: 12/19/2022]
Abstract
Modern science is characterized by integration and synergy between research fields. Accordingly, as technological advances allow new and more ambitious quests in scientific inquiry, numerous analytical and engineering techniques have become useful tools in biological research. The focus of this review is on cutting edge technologies that aid direct measurement of bioactive compounds in the nervous system to facilitate fundamental research, diagnostics, and drug discovery. We discuss challenges associated with measurement of cell-to-cell signaling molecules in the nervous system, and advocate for a decrease of sample volumes to the nanoliter volume regimen for improved analysis outcomes. We highlight effective approaches for the collection, separation, and detection of such small-volume samples, present strategies for targeted and discovery-oriented research, and describe the required technology advances that will empower future translational science.
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Affiliation(s)
- Elena V Romanova
- Beckman Institute for Advanced Science and Technology and the Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Jordan T Aerts
- Beckman Institute for Advanced Science and Technology and the Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Callie A Croushore
- Beckman Institute for Advanced Science and Technology and the Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Jonathan V Sweedler
- Beckman Institute for Advanced Science and Technology and the Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, USA
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16
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Shimma S, Takashima Y, Hashimoto J, Yonemori K, Tamura K, Hamada A. Alternative two-step matrix application method for imaging mass spectrometry to avoid tissue shrinkage and improve ionization efficiency. JOURNAL OF MASS SPECTROMETRY : JMS 2013; 48:1285-90. [PMID: 24338883 DOI: 10.1002/jms.3288] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 09/16/2013] [Accepted: 09/25/2013] [Indexed: 05/20/2023]
Abstract
Mass spectrometry (MS) was used to measure the concentrations of drug and biological compounds in plasma and tissues. Matrix-assisted laser desorption/ionization (MALDI) imaging MS (IMS) has recently been applied to the analysis of localized drugs on biological tissue surfaces. In MALDI-IMS, matrix application process is crucial for successful results. However, it is difficult to obtain homogeneous matrix crystals on the tissue surface due to endogenous salts and tissue surface heterogeneity. Consequently, the non-uniform crystals degrade the quality of the spectrum and likely cause surface imaging artifacts. Furthermore, the direct application of matrix solution can cause tissue shrinkage due to the organic solvents. Here, we report an alternative two-step matrix application protocol which combines the vacuum deposition of matrix crystals and the spraying of matrix solution to produce a homogeneous matrix layer on the tissue surface. Our proposed technique can also prevent cracking or shrinking of the tissue samples and improve the ionization efficiency of the distributed exogenous material.
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Affiliation(s)
- Shuichi Shimma
- Division of Translational Research, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 1040045, Japan; Division of Clinical Pharmacology Group for Translational Research Support Core, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 1040045, Japan
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17
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Lietz CB, Gemperline E, Li L. Qualitative and quantitative mass spectrometry imaging of drugs and metabolites. Adv Drug Deliv Rev 2013; 65:1074-85. [PMID: 23603211 DOI: 10.1016/j.addr.2013.04.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 03/27/2013] [Accepted: 04/09/2013] [Indexed: 12/26/2022]
Abstract
Mass spectrometric imaging (MSI) has rapidly increased its presence in the pharmaceutical sciences. While quantitative whole-body autoradiography and microautoradiography are the traditional techniques for molecular imaging of drug delivery and metabolism, MSI provides advantageous specificity that can distinguish the parent drug from metabolites and modified endogenous molecules. This review begins with the fundamentals of MSI sample preparation/ionization, and then moves on to both qualitative and quantitative applications with special emphasis on drug discovery and delivery. Cutting-edge investigations on sub-cellular imaging and endogenous signaling peptides are also highlighted, followed by perspectives on emerging technology and the path for MSI to become a routine analysis technique.
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18
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Rahman MM, Neupert S, Predel R. Neuropeptidomics of the Australian sheep blowfly Lucilia cuprina (Wiedemann) and related Diptera. Peptides 2013; 41:31-7. [PMID: 23280433 DOI: 10.1016/j.peptides.2012.12.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 12/21/2012] [Accepted: 12/21/2012] [Indexed: 01/13/2023]
Abstract
Insect neuropeptides are the most diverse and important group of messenger molecules that regulate almost all physiological processes, including behavior. In this study, we performed a combination of matrix assisted laser desorption ionization time of flight (MALDI-TOF) and electrospray ionization quadrupole time of flight (ESI-Q-TOF) mass spectrometry to analyze the peptidome of the brain and the neurohemal organs of the Australian sheep blowfly Lucilia cuprina and compared the data with those of related flies such as the gray flesh fly Sarcophaga (=Neobellieria) bullata; the cabbage root fly Delia radicum, the fruit fly Drosophila melanogaster, and the yellow fever mosquito, Aedes aegypti. Without counting low intensity signals of truncated peptides, 45 neuropeptides arising from 12 neuropeptide genes (adipokinetic hormone, CAPA-peptides, corazonin, extended FMRFamides, SIFamide, insect kinin, short neuropeptide F, NPLP-1 peptides, HUGIN-pyrokinin, sulfakinins, allatostatins A, putative eclosion hormone precursor peptide) were identified; sequences of extended FMRFamides were reported in a separate publication. The remarkable similarity of the peptidome of cyclorraphan flies, which contain a large number of ecologically important species, does not support the development of a species-specific neuropeptide-based insect pest control strategy. However, mass spectrometric approaches as shown here do not cover the entire peptidome or differences at the receptor level and it is possible that group-specific peptide ligands or receptors exist that escaped the detection.
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Affiliation(s)
- Mohammad Mazibur Rahman
- Department of General Zoology and Animal Physiology, Friedrich-Schiller-University, Jena, Germany
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19
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Zhang Z, Jia C, Li L. Neuropeptide analysis with liquid chromatography-capillary electrophoresis-mass spectrometric imaging. J Sep Sci 2012; 35:1779-84. [PMID: 22807360 DOI: 10.1002/jssc.201200051] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Herein we report the first attempt of coupling multidimensional separations to matrix-assisted laser desorption/ionization (MALDI) mass spectrometric imaging detection. Complex neuropeptide mixtures extracted from crustaceans were first fractionated by reversed-phase liquid chromatography (RPLC), and then subjected to a capillary electrophoresis-mass spectrometric imaging platform. With a specific focus on orcokinin family neuropeptides, we demonstrated that these trace-level analytes from complex neural tissue samples can be fully separated from chemical noise and interfering components and visualized as mass spectrometric imaging signals. A total of 19 putative orcokinins were detected, with highly efficient separations within the family being achieved for the first time. The results indicate that two-dimensional separation coupling to mass spectrometric imaging can serve as a novel and powerful tool in proteomics and peptidomics studies.
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Affiliation(s)
- Zichuan Zhang
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin 53705, USA
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20
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Shimma S, Kubo A, Satoh T, Toyoda M. Detailed structural analysis of lipids directly on tissue specimens using a MALDI-SpiralTOF-Reflectron TOF mass spectrometer. PLoS One 2012; 7:e37107. [PMID: 22623981 PMCID: PMC3356408 DOI: 10.1371/journal.pone.0037107] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Accepted: 04/18/2012] [Indexed: 12/19/2022] Open
Abstract
Direct tissue analysis using a novel tandem time-of-flight (TOF-TOF) mass spectrometer is described. This system consists of a matrix-assisted laser desorption/ionization ion source, a spiral ion trajectory TOF mass spectrometer “SpiralTOF (STOF)”, a collision cell, and an offset parabolic reflectron (RTOF). The features of this system are high precursor ion selectivity due to a 17-m flight path length in STOF and elimination of post-source decay (PSD) ions. The acceleration energy is 20 keV, so that high-energy collision-induced dissociation (HE-CID) is possible. Elimination of PSD ions allows observation of the product ions inherent to the HE-CID process. By using this tandem TOF instrument, the product ion spectrum of lipids provided detailed structural information of fatty acid residues.
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Affiliation(s)
- Shuichi Shimma
- Venture Business Laboratory, Osaka University, Suita, Osaka, Japan.
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21
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Li H, Hummon AB. Imaging Mass Spectrometry of Three-Dimensional Cell Culture Systems. Anal Chem 2011; 83:8794-801. [DOI: 10.1021/ac202356g] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Haohang Li
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Amanda B. Hummon
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
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22
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Visualization of phosphatidylcholine, lysophosphatidylcholine and sphingomyelin in mouse tongue body by matrix-assisted laser desorption/ionization imaging mass spectrometry. Anal Bioanal Chem 2011; 400:1913-21. [PMID: 21472363 DOI: 10.1007/s00216-011-4924-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Revised: 03/13/2011] [Accepted: 03/16/2011] [Indexed: 01/06/2023]
Abstract
The mammalian tongue is one of the most important organs during food uptake because it is helpful for mastication and swallowing. In addition, taste receptors are present on the surface of the tongue. Lipids are the second most abundant biomolecules after water in the tongue. Lipids such as phosphatidylcholine (PC), lysophosphatidylcholine (LPC) and sphingomyelin (SM) are considered to play fundamental roles in the mediation of cell signaling. Imaging mass spectrometry (IMS) is powerful tool for determining and visualizing the distribution of lipids across sections of dissected tissue. In this study, we identified and visualized the PC, LPC, and SM species in a mouse tongue body section with matrix-assisted laser desorption/ionization (MALDI)-IMS. The ion image constructed from the peaks revealed that docosahexaenoic acid (DHA)-containing PC, LPC, linoleic acid-containing PC and SM (d18:1/16:0), and oleic acid-containing PC were mainly distributed in muscle, connective tissue, stratified epithelium, and the peripheral nerve, respectively. Furthermore, the distribution of SM (d18:1/16:0) corresponded to the distribution of nerve tissue relating to taste in the stratified epithelium. This study represents the first visualization of PC, LPC and SM localization in the mouse tongue body.
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Wang J, Ye H, Zhang Z, Xiang F, Girdaukas G, Li L. Advancing matrix-assisted laser desorption/ionization-mass spectrometric imaging for capillary electrophoresis analysis of peptides. Anal Chem 2011; 83:3462-9. [PMID: 21417482 DOI: 10.1021/ac200708f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this work, the utilization of matrix-assisted laser desorption/ionization-mass spectrometric imaging (MALDI-MSI) for capillary electrophoresis (CE) analysis of peptides based on a simple and robust off-line interface has been investigated. The interface involves sliding the CE capillary distal end within a machined groove on a MALDI sample plate, which is precoated with a thin layer of matrix for continuous sample deposition. MALDI-MSI by time of flight (TOF)/TOF along the CE track enables high-resolution and high-sensitivity detection of peptides, allowing the reconstruction of a CE electropherogram while providing accurate mass measurements and structural identification of molecules. Neuropeptide standards and their H/D isotopic formaldehyde-labeled derivatives were analyzed using this new platform. Normalized intensity ratios of individual ions extracted from the CE trace were compared to MALDI-MS direct analysis and the theoretical ratios. The CE-MALDI-MSI results show potential for sensitive and quantitative analysis of peptide mixtures spanning a wide dynamic range.
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Affiliation(s)
- Junhua Wang
- School of Pharmacy, University of Wisconsin-Madison, 53705, United States
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