1
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Ansari S, Masoum S. Molecularly imprinted polymers for capturing and sensing proteins: Current progress and future implications. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.02.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Abdelhamid HN. Ionic Liquid-Assisted Laser Desorption/Ionization-Mass Spectrometry: Matrices, Microextraction, and Separation. Methods Protoc 2018; 1:E23. [PMID: 31164566 PMCID: PMC6526421 DOI: 10.3390/mps1020023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 06/13/2018] [Accepted: 06/15/2018] [Indexed: 12/16/2022] Open
Abstract
Ionic liquids (ILs) have advanced a variety of applications, including matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS). ILs can be used as matrices and solvents for analyte extraction and separation prior to analysis using laser desorption/ionization-mass spectrometry (LDI-MS). Most ILs show high stability with negligible sublimation under vacuum, provide high ionization efficiency, can be used for qualitative and quantitative analyses with and without internal standards, show high reproducibility, form homogenous spots during sampling, and offer high solvation efficiency for a wide range of analytes. Ionic liquids can be used as solvents and pseudo-stationary phases for extraction and separation of a wide range of analytes, including proteins, peptides, lipids, carbohydrates, pathogenic bacteria, and small molecules. This review article summarizes the recent advances of ILs applications using MALDI-MS. The applications of ILs as matrices, solvents, and pseudo-stationary phases, are also reviewed.
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3
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Byliński H, Gębicki J, Dymerski T, Namieśnik J. Direct Analysis of Samples of Various Origin and Composition Using Specific Types of Mass Spectrometry. Crit Rev Anal Chem 2017; 47:340-358. [DOI: 10.1080/10408347.2017.1298986] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hubert Byliński
- Faculty of Chemistry, Department of Analytical Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Jacek Gębicki
- Faculty of Chemistry, Department of Chemical and Process Engineering, Gdańsk University of Technology, Gdańsk, Poland
| | - Tomasz Dymerski
- Faculty of Chemistry, Department of Analytical Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Jacek Namieśnik
- Faculty of Chemistry, Department of Analytical Chemistry, Gdańsk University of Technology, Gdańsk, Poland
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Schröder C. Proteins in Ionic Liquids: Current Status of Experiments and Simulations. Top Curr Chem (Cham) 2017; 375:25. [PMID: 28176271 PMCID: PMC5480425 DOI: 10.1007/s41061-017-0110-2] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 01/18/2017] [Indexed: 01/28/2023]
Abstract
In the last two decades, while searching for interesting applications of ionic liquids as potent solvents, their solvation properties and their general impact on biomolecules, and in particular on proteins, gained interest. It turned out that ionic liquids are excellent solvents for protein refolding and crystallization. Biomolecules showed increased solubilities and stabilities, both operational and thermal, in ionic liquids, which also seem to prevent self-aggregation during solubilization. Biomolecules can be immobilized, e.g. in highly viscous ionic liquids, for particular biochemical processes and can be designed to some extent by the proper choice of the ionic liquid cations and anions, which can be characterized by the Hofmeister series.
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Affiliation(s)
- Christian Schröder
- Faculty of Chemistry, Department of Computational Biological Chemistry, University of Vienna, Vienna, Austria.
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Ling L, Xiao C, Jiang L, Wang S, Li Y, Chen X, Guo X. A cool and high salt-tolerant ionic liquid matrix for preferential ionization of phosphopeptides by negative ion MALDI-MS. NEW J CHEM 2017. [DOI: 10.1039/c7nj01706e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An optimized ILM G3THAP/PA matrix significantly improved the detection of phosphopeptides by negative ion MALDI-MS compared with using 3-AQ/CHCA/ADP and DHB/PA matrices.
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Affiliation(s)
- Ling Ling
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
- Changchun 130021
- P. R. China
| | - Liyan Jiang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University
- Changchun 130012
- P. R. China
| | - Sheng Wang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Ying Li
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
- Changchun 130021
- P. R. China
| | - Xinhua Guo
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
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Wiangnon K, Cramer R. Liquid MALDI MS Analysis of Complex Peptide and Proteome Samples. J Proteome Res 2016; 15:2998-3008. [DOI: 10.1021/acs.jproteome.6b00148] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kanjana Wiangnon
- Department
of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, United Kingdom
| | - Rainer Cramer
- Department
of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, United Kingdom
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7
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Abdelhamid HN. Ionic liquids for mass spectrometry: Matrices, separation and microextraction. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.12.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Shrivas K, Tapadia K. Ionic liquid matrix-based dispersive liquid-liquid microextraction for enhanced MALDI-MS analysis of phospholipids in soybean. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1001:124-30. [PMID: 26276066 DOI: 10.1016/j.jchromb.2015.07.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 07/04/2015] [Accepted: 07/18/2015] [Indexed: 11/24/2022]
Abstract
Ionic liquid matrix (ILM) is found to be a very versatile substance for analysis of broad range of organic molecules in matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) due to good solubility for a variety of analytes, formation of homogenous crystals and high vacuum stability of the matrix. In the present work, an ILM, cyno-4-hydroxycinnamic acid-butylamine (CHCAB) was employed in dispersive liquid-liquid microextraction (DLLME) as sample probe and matrix for extraction and ionization of phospholipids from food samples (soybean) prior to MALDI-MS analysis. With the employed technique, 8-125 fold improvement in signal intensity and limit of detection were achieved for the analysis of phospholipids. The best extraction efficiency of phospholipids in ILM-DLLME was obtained with 5min extraction time in presence 30mg/mL CHCAB and 1.2% NaCl using chloroform as an extracting solvent and methanol as a dispersing solvent. Further, the developed ILM-DLLME procedure has been successfully applied for the analysis of phospholipids in soybean samples in MALDI-MS.
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Affiliation(s)
- Kamlesh Shrivas
- Department of Chemistry, Guru Ghasidas Vishwavidyalaya, Koni, Bilaspur CG-495009, India.
| | - Kavita Tapadia
- Department of Chemistry, National Institute of Technology, Raipur CG-492010, India
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9
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Protein imprinted ionic liquid polymer on the surface of multiwall carbon nanotubes with high binding capacity for lysozyme. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 960:239-46. [DOI: 10.1016/j.jchromb.2014.04.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 04/08/2014] [Accepted: 04/10/2014] [Indexed: 11/23/2022]
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10
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Abdelhamid HN, Khan MS, Wu HF. Design, characterization and applications of new ionic liquid matrices for multifunctional analysis of biomolecules: A novel strategy for pathogenic bacteria biosensing. Anal Chim Acta 2014; 823:51-60. [DOI: 10.1016/j.aca.2014.03.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 03/16/2014] [Accepted: 03/19/2014] [Indexed: 01/01/2023]
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Gabriel SJ, Pfeifer D, Schwarzinger C, Panne U, Weidner SM. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometric imaging of synthetic polymer sample spots prepared using ionic liquid matrices. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2014; 28:489-498. [PMID: 24497287 DOI: 10.1002/rcm.6810] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/17/2013] [Accepted: 12/17/2013] [Indexed: 06/03/2023]
Abstract
RATIONALE Polymer sample spots for matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) prepared by the dried-droplet method often reveal ring formation accompanied by possible segregation of matrix and sample molecules as well as of the polymer homologs itself. Since the majority of sample spots are prepared by this simple and fast method, a matrix or sample preparation method that excludes such segregation has to be found. METHODS Three different ionic liquid matrices based on conventionally used aromatic compounds for MALDI-TOF MS were prepared. The formation of ionic liquids was proven by (1) H NMR spectroscopy. MALDI-Imaging mass spectrometry was applied to monitor the homogeneity. RESULTS Our results show a superior sample spot homogeneity using ionic liquid matrices. Spots could be sampled several times without visible differences in the mass spectra. A frequently observed loss of matrix in the mass spectrometer vacuum was not observed. The necessary laser irradiance was reduced, which resulted in less polymer fragmentation. CONCLUSIONS Ionic liquid matrices can be used to overcome segregation, a typical drawback of conventional MALDI dried-droplet preparations. Homogeneous sample spots are easy to prepare, stable in the MS vacuum and, thereby, improve the reproducibility of MALDI.
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Affiliation(s)
- Stefan J Gabriel
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Strasse 11, D-12489, Berlin, Germany
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12
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Gross JH. High-mass cluster ions of ionic liquids in positive-ion and negative-ion DART-MS and their application for wide-range mass calibrations. Anal Bioanal Chem 2014; 406:2853-62. [DOI: 10.1007/s00216-014-7720-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 02/18/2014] [Accepted: 02/21/2014] [Indexed: 11/25/2022]
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13
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Cramer R, Karas M, Jaskolla TW. Enhanced MALDI MS Sensitivity by Weak Base Additives and Glycerol Sample Coating. Anal Chem 2013; 86:744-51. [DOI: 10.1021/ac403228d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Rainer Cramer
- Department
of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Michael Karas
- Institute
of Pharmaceutical Chemistry, Cluster of Excellence “Macromolecular
Complexes”, Goethe-University Frankfurt, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany
| | - Thorsten W. Jaskolla
- Institute
of Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
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14
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Abdelhamid HN, Gopal J, Wu HF. Synthesis and application of ionic liquid matrices (ILMs) for effective pathogenic bacteria analysis in matrix assisted laser desorption/ionization (MALDI-MS). Anal Chim Acta 2013; 767:104-11. [DOI: 10.1016/j.aca.2012.12.054] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 12/25/2012] [Accepted: 12/26/2012] [Indexed: 10/27/2022]
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Ionic liquid applications in peptide chemistry: synthesis, purification and analytical characterization processes. Molecules 2012; 17:4158-85. [PMID: 22481538 PMCID: PMC6268249 DOI: 10.3390/molecules17044158] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 03/22/2012] [Accepted: 03/28/2012] [Indexed: 11/17/2022] Open
Abstract
This review aims to provide a comprehensive overview of the recent advances made in the field of ionic liquids in peptide chemistry and peptide analytics.
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Yuan S, Deng Q, Fang G, Pan M, Zhai X, Wang S. A novel ionic liquid polymer material with high binding capacity for proteins. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm14577d] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Electrophoretic separation of acidic and basic proteins in the presence of micromolar concentrations of an ionic liquid. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0599-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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18
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Ahmad F, Wu HF. Characterization of pathogenic bacteria using ionic liquid via single drop microextraction combined with MALDI-TOF MS. Analyst 2011; 136:4020-7. [DOI: 10.1039/c1an15350a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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19
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Cao J, Qu H, Cheng Y. The use of novel ionic liquid-in-water microemulsion without the addition of organic solvents in a capillary electrophoretic system. Electrophoresis 2010; 31:3492-8. [DOI: 10.1002/elps.201000168] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Giménez E, Benavente F, Barbosa J, Sanz-Nebot V. Ionic liquid matrices for MALDI-TOF-MS analysis of intact glycoproteins. Anal Bioanal Chem 2010; 398:357-65. [DOI: 10.1007/s00216-010-3898-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 06/01/2010] [Accepted: 06/01/2010] [Indexed: 10/19/2022]
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21
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Frade RFM, Afonso CAM. Impact of ionic liquids in environment and humans: An overview. Hum Exp Toxicol 2010; 29:1038-54. [DOI: 10.1177/0960327110371259] [Citation(s) in RCA: 204] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ionic liquids enclose a large number of molecular structures consisting of a cation and an anion. Their physical state and their chemical properties can be tuned by different combination of the ions and a large number of ionic liquids have already been reported. Toxicity of ionic liquids is a subject of great importance concerning their likely use as greener solvents and new materials for a broad number of potential applications. This review provides relevant toxicological data published so far about this topic and includes a large range of ionic liquids based on different cations (imidazolium, pyridinium, pyrrolidinium, quaternary ammonium, quaternary phosphonium and guanidinium) and anions (halogens-Br, Cl, bis (trifluoromethyl)sulfonylamide, tetrafluoroborate, hexafluorophosphate, dicyanamide, acesulfame and saccharin, amongst others). In general, toxicity of ionic liquids depends on both ions and the effect of the cation alkyl chain length is very pronounced although the type of anion also exerts impact on the overall toxicity.
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Affiliation(s)
- Raquel FM Frade
- CQFM, Centro de Química-Física Molecular, IN - Institute of Nanosciences and Nanotechnology, Instituto Superior Técnico, Lisboa, Portugal,
| | - Carlos AM Afonso
- CQFM, Centro de Química-Física Molecular, IN - Institute of Nanosciences and Nanotechnology, Instituto Superior Técnico, Lisboa, Portugal
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Towers MW, Mckendrick JE, Cramer R. Introduction of 4-Chloro-α-cyanocinnamic Acid Liquid Matrices for High Sensitivity UV-MALDI MS. J Proteome Res 2010; 9:1931-40. [DOI: 10.1021/pr901089j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Mark W. Towers
- Department of Chemistry and The BioCentre, University of Reading, Reading, United Kingdom
| | - John E. Mckendrick
- Department of Chemistry and The BioCentre, University of Reading, Reading, United Kingdom
| | - Rainer Cramer
- Department of Chemistry and The BioCentre, University of Reading, Reading, United Kingdom
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23
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Ionic liquids in analytical chemistry. Anal Chim Acta 2010; 661:1-16. [DOI: 10.1016/j.aca.2009.12.007] [Citation(s) in RCA: 587] [Impact Index Per Article: 41.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Revised: 12/04/2009] [Accepted: 12/09/2009] [Indexed: 11/23/2022]
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Liu Q, He L. Ionic matrix for matrix-enhanced surface-assisted laser desorption ionization mass spectrometry imaging (ME-SALDI-MSI). JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2009; 20:2229-2237. [PMID: 19783157 DOI: 10.1016/j.jasms.2009.08.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 08/11/2009] [Accepted: 08/14/2009] [Indexed: 05/28/2023]
Abstract
Matrix-enhanced surface-assisted laser desorption ionization mass spectrometry imaging (ME-SALDI MSI) has been previously demonstrated as a viable approach to improving MS imaging sensitivity. We describe here the employment of ionic matrices to replace conventional MALDI matrices as the coating layer with the aims of reducing analyte redistribution during sample preparation and improving matrix vacuum stability during imaging. In this study, CHCA/ANI (alpha-cyano-4-hydroxycinnamic acid/aniline) was deposited atop tissue samples through sublimation to eliminate redistribution of analytes of interest on the tissue surface. The resulting film was visually homogeneous under an optical microscope. Excellent vacuum stability of the ionic matrix was quantitatively compared with the conventional matrix. The subsequently improved ionization efficiency of the analytes over traditional MALDI was demonstrated. The benefits of using the ionic matrix in MS imaging were apparent in the analysis of garlic tissue sections in the ME-SALDI MSI mode.
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Affiliation(s)
- Qiang Liu
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
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25
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Ullmer R, Rizzi AM. Use of a novel ionic liquid matrix for MALDI-MS analysis of glycopeptides and glycans out of total tryptic digests. JOURNAL OF MASS SPECTROMETRY : JMS 2009; 44:1596-1603. [PMID: 19787684 DOI: 10.1002/jms.1668] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this study, we investigated a novel ionic liquid matrix (ILM), namely, the 1,1,3,3-tetramethylguanidinium salt of 2,4,6-trihydroxyacetophenone (THAP). This matrix[1,1,3,3-tetramethylguanidinium 2,4,6-trihydroxyacetophenone (GTHAP)] turned out to be well suited for the matrix-assisted laser desorption/ionization mass spectrometric analysis of glycopeptides and glycans, and overcame the well-known ionization suppression of carbohydrate structures in the presence of peptides. The matrix was evaluated by two different series of experiments, in each case in comparison with the crystalline THAP matrix. In the first set of experiments, mass spectra were taken from unseparated tryptic digests of three glycoproteins taken as model compounds. Even glycopeptides containing short peptide backbones and large carbohydrate moieties gave high signal intensities when using the ILM though they did not appear in the THAP spectra. In the second set of experiments, the total tryptic digests were treated with endoglycosidase PNGase F to cleave off the N-linked glycans. When using the GTHAP matrix, it was possible to detect the glycans with high intensities in the presence of the tryptic peptides, whereas glycan ionization was completely suppressed when measured with the solid matrix THAP. The extent of metastable decay of glycopeptides was reduced when using the ILM. Altogether, GTHAP proved as a useful ILM particularly being superior to solid matrices in the context of glycosylation analysis.
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Affiliation(s)
- Roman Ullmer
- Institute of Analytical Chemistry and Food Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
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26
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UV-laser ablation of ionic liquid matrices. Anal Bioanal Chem 2009; 395:2457-63. [DOI: 10.1007/s00216-009-3030-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 07/26/2009] [Accepted: 07/30/2009] [Indexed: 11/25/2022]
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27
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Lasaosa M, Jakoby T, Delmotte N, G. Huber C, Heinzle E, Tholey A. Rapid selection of peptide containing fractions in off-line 2-D HPLC in shotgun proteome analysis by screening with MALDI TOF MS. Proteomics 2009; 9:4577-81. [DOI: 10.1002/pmic.200900274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Calvano CD, Carulli S, Palmisano F. Aniline/alpha-cyano-4-hydroxycinnamic acid is a highly versatile ionic liquid for matrix-assisted laser desorption/ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2009; 23:1659-68. [PMID: 19412917 DOI: 10.1002/rcm.4053] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The performance of a matrix-assisted laser desorption/ionization (MALDI) ionic liquid matrix (ILM) consisting of alpha-cyano-4-hydroxycinnamic acid (CHCA) and aniline (ANI) was evaluated to assess whether it could offer possible advantages over conventional matrices. Ultraviolet (UV), Fourier transform infrared (FTIR), nuclear magnetic resonance (NMR) and laser desorption/ionization mass spectrometry (LDI-MS) experiments were carried out with the aim of confirming the structure of the ANI-CHCA ILM. Different model analytes such as amino acids, peptides, proteins, lipids, phospholipids, synthetic polymers, and sugars were tested. Mass spectra with similar or improved signal-to-noise (S/N) ratio (compared to CHCA) were invariably obtained demonstrating the potential of this ILM as a general purpose matrix. Furthermore, protein identification by peptide mass fingerprinting (PMF) and database search was facilitated compared to CHCA since higher scores and increased sequence coverage were observed. Finally, a complex lipid mixture (i.e. a raw extract of a milk sample) analysed by MALDI-MS showed improved S/N ratio, a reduced chemical noise and a limited formation of matrix-clusters.
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Affiliation(s)
- Cosima D Calvano
- Dipartimento di Chimica - Università degli Studi di Bari, Via Orabona 4, 70126 Bari, Italy
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29
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Soukup-Hein RJ, Warnke MM, Armstrong DW. Ionic liquids in analytical chemistry. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2009; 2:145-168. [PMID: 20636057 DOI: 10.1146/annurev-anchem-060908-155150] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The role of ionic liquids (ILs) in analytical chemistry is increasing substantially every year. A decade ago there were but a handful of papers in this area of research that were considered curiosities at best. Today, those publications are recognized as seminal articles that gave rise to one of the most rapidly expanding areas of research in chemical analysis. In this review, we briefly highlight early work involving ILs and discuss the most recent advances in separations, mass spectrometry, spectroscopy, and electroanalytical chemistry. Many of the most important advances in these fields depend on the development of new, often unique ILs and multifunctional ILs. A better understanding of the chemical and physical properties of ILs is also essential.
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30
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Szaéjli E, Feheér T, Medzihradszky KF. Investigating the Quantitative Nature of MALDI-TOF MS. Mol Cell Proteomics 2008; 7:2410-8. [DOI: 10.1074/mcp.m800108-mcp200] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Plaquevent JC, Levillain J, Guillen F, Malhiac C, Gaumont AC. Ionic Liquids: New Targets and Media for α-Amino Acid and Peptide Chemistry. Chem Rev 2008; 108:5035-60. [DOI: 10.1021/cr068218c] [Citation(s) in RCA: 239] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jean-Christophe Plaquevent
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
| | - Jocelyne Levillain
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
| | - Frédéric Guillen
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
| | - Catherine Malhiac
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
| | - Annie-Claude Gaumont
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
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Ionic liquids in sample preparation. Anal Bioanal Chem 2008; 393:871-83. [DOI: 10.1007/s00216-008-2445-6] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2008] [Revised: 09/25/2008] [Accepted: 09/30/2008] [Indexed: 10/21/2022]
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Gross JH. Liquid injection field desorption/ionization-mass spectrometry of ionic liquids. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2007; 18:2254-2262. [PMID: 17980617 DOI: 10.1016/j.jasms.2007.09.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2007] [Revised: 09/21/2007] [Accepted: 09/21/2007] [Indexed: 05/25/2023]
Abstract
Ten ionic liquids based on four types of organic cations, C(+) (imidazolium, pyrrolidinium, pyridinium, and phosphonium), combined with various types of anions, A-, were analyzed by liquid injection field desorption/ionization- (LIFDI) mass spectrometry. For the purpose of LIFDI analysis the ionic liquids were dissolved in methanol, acetonitrile or tetrahydrofuran at concentrations of 0.01-0.1 microl mL(-1). The measurements were performed on a double-focusing magnetic sector instrument. In all ionic liquid LIFDI spectra, the intact cation of the compound yielded the base peak accompanied by cluster ions of the general formula [C(2)A](+) and occasionally [C(3)A(2)](+). Tandem mass spectrometry and reconstructed ion chromatograms were employed to reveal the identity of the observed ions. Although limited to positive-ion mode, LIFDI also provided analytical information on the anions due to cluster ion formation. Depending on actual emitter condition and ionic liquid the limit of detection in survey scans was determined to 5-50 pg of ionic liquid.
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Affiliation(s)
- Jürgen H Gross
- Institute of Organic Chemistry, University of Heidelberg, Heidelberg, Germany.
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Tindale JJ, Na C, Jennings MC, Ragogna PJ. Synthesis and characterization of fluorinated phosphonium ionic liquids. CAN J CHEM 2007. [DOI: 10.1139/v07-035] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A wide variety of phosphonium ionic liquids containing fluorous ponytails Rfn (Rfn = –(CF2)n–1CF3; n = 4, 6, 10) are synthesized by the reaction of Rfn-(CH2)2-I with trialkylphosphines (R3P; R = Me, nBu, nOct). The efficacy of multiple metathetical routes to anion exchange have been investigated, thus the corresponding BF4–, PF6–, tosylate (OTs–) and triflate (OTf–) derivatives have also been prepared. All compounds have been comprehensively characterized by multinuclear NMR spectroscopy, ESI-MS, DSC, and TGA/SDTA, and in the case of [Me3PCH2CH2Rf4][I] by single crystal X-ray diffraction. These materials range from high melting solids (e.g., [Me3P(CH2)2Rf4][I] Tm = 195 °C) to very low melting liquids (e.g., [nOct3P(CH2)2Rf4][OTf] Tg = –64 °C), and they all have high thermal decomposition points (295 to 394 °C). Incorporation of the more weakly coordinating BF4– and PF6– yielded a significant increase in the melting point of the materials, in contrast to OTf– and OTs– derivatives, which all exhibited significantly depressed melting points.Key words: phosphonium ionic liquids, alternative solvents, fluorine, phosphorus, fluorous ponytails.
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Hsieh CH, Huang SY, Wu YC, Liu LF, Han CC, Liu YC, Tam MF. Expression of proteins with dimethylarginines in Escherichia coli for protein-protein interaction studies. Protein Sci 2007; 16:919-28. [PMID: 17456744 PMCID: PMC2206645 DOI: 10.1110/ps.062667407] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Protein arginine methylation often modulates protein-protein interactions. To isolate a sufficient quantity of proteins enriched in methyl arginine(s) from natural sources for biochemical studies is laborious and difficult. We describe here an expression system that produces recombinant proteins that are enriched in omega-N(G),N(G)-asymmetry dimethylarginines. A yeast type I arginine methyltransferase gene (HMT1) is put on a plasmid under the control of the Escherichia coli methionine aminopeptidase promoter for constitutive expression. The protein targeted for post-translational modification is put on the same plasmid behind a T7 promoter for inducible expression of His(6)-tagged proteins. Sbp1p and Stm1p were used as model proteins to examine this expression system. The 13 arginines within the arginine-glycine-rich motif of Sbp1p and the RGG sequence near the C terminus of Stm1p were methylated. Unexpectedly, the arginine residue on the thrombin cleavage site (LVPRGS) of the fusion proteins can also be methylated by Hmt1p. Sbp1p and Sbp1p/hmt1 were covalently attached to solid supports for the isolation of interacting proteins. The results indicate that arginine methylation on Sbp1p exerts both positive and negative effects on protein-protein interaction.
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Affiliation(s)
- Cheng-Hsilin Hsieh
- Institute of Molecular Biology, Academia Sinica, Taiwan, Republic of China
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36
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Tholey A, Heinzle E. Ionic (liquid) matrices for matrix-assisted laser desorption/ionization mass spectrometry-applications and perspectives. Anal Bioanal Chem 2006; 386:24-37. [PMID: 16830111 DOI: 10.1007/s00216-006-0600-5] [Citation(s) in RCA: 233] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2006] [Revised: 06/06/2006] [Accepted: 06/07/2006] [Indexed: 11/30/2022]
Abstract
A large number of matrix substances have been used for various applications in matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS). The majority of matrices applied in ultraviolet-MALDI MS are crystalline, low molecular weight compounds. A problem encountered with many of these matrices is the formation of hot spots, which lead to inhomogeneous samples, thus leading to increased measurement times and hampering the application of MALDI MS for quantitative purposes. Recently, ionic (liquid) matrices (ILM or IM) have been introduced as a potential alternative to the classical crystalline matrices. ILM are equimolar mixtures of conventional MALDI matrix compounds such as 2,5-dihydroxybenzoic acid (DHB), alpha-cyano-4-hydroxycinnamic acid (CCA) or sinapinic acid (SA) together with organic bases [e.g., pyridine (Py), tributylamine (TBA) or N,N-dimethylethylenediamine (DMED)]. The present article presents a first overview of this new class of matrices. Characteristic properties of ILM, their influence on mass spectrometric parameters such as sensitivity, resolution and adduct formation and their application in the fields of proteome analysis, the measurement of low molecular weight compounds, the use of MALDI MS for quantitative purposes and in MALDI imaging will be presented. Scopes and limitations for the application of ILM are discussed.
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Affiliation(s)
- Andreas Tholey
- Technische Biochemie, Geb. 1.5, Universität des Saarlandes, 66123 Saarbrücken, Germany.
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Tholey A. Ionic liquid matrices with phosphoric acid as matrix additive for the facilitated analysis of phosphopeptides by matrix-assisted laser desorption/ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:1761-8. [PMID: 16676301 DOI: 10.1002/rcm.2514] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) is a powerful tool for the analysis and characterization of protein phosphorylation on the peptide level. In this study, the applicability of ionic liquid matrices (ILM) formed by combination of the crystalline MALDI matrix 2,5-dihydroxybenzoic acid (DHB) with pyridine or n-butylamine was tested for the analysis of phosphopeptides. Low ionization efficiency in both positive and negative ion mode was observed in acid-free sample preparations. Upon addition of 0.1% trifluoroacetic acid (TFA), ion formation was increased, but analogously to the situation described earlier for pure DHB, best results were obtained upon use of 1% phosphoric acid as matrix additive. The samples prepared in this way were significantly more homogeneous than preparations with pure DHB, thus avoiding the need for time-consuming search for hot spots. Other characteristics like metastable fragmentation of phosphopeptides did not differ from that observed in classical preparations. The limits of detection for synthetic phosphopeptides and singly or multiply phosphorylated peptides from tryptic digests of alpha- and beta-casein were comparable with those obtained when using pure DHB; in some cases even higher signal intensities could be observed in the ILM. The use of ILM in combination with 1% phosphoric acid as matrix additive significantly facilitates analysis of phosphopeptides by MALDI-MS.
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Affiliation(s)
- Andreas Tholey
- Technische Biochemie, Universität des Saarlandes, 66123 Saarbrücken, Germany.
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