1
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Xu F, Yang S, Wu F, Ding CF. Chiral Analysis of Linear Protonated Dipeptides by complexing with Cyclodextrins Using Ion-Mobility Mass-Spectrometry and DFT Structural Calculations. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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2
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Kaszycki JL, Dauly C, Kamleh A. Separation of Isomeric Metabolites and Gangliosides with High Performance (Drift Tube) Ion Mobility–Mass Spectrometry. LCGC NORTH AMERICA 2022. [DOI: 10.56530/lcgc.na.jw1886w1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The study of metabolites and gangliosides is increasingly important in drug discovery (1) and immunology (2). Accurate analysis of biologically relevant isomers is important because their structure affects their molecular properties. Typically, the isomers are separated using chromatography prior to mass spectrometry (MS) analysis. However, specialized chromatographic methods that distinguish isomers frequently require a complex setup and long runs. Techniques that allow accurate results to be acquired quickly and efficiently would be beneficial.
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3
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Doerfler H, Botesteanu DA, Blech S, Laux R. Untargeted Metabolomic Analysis Combined With Multivariate Statistics Reveal Distinct Metabolic Changes in GPR40 Agonist-Treated Animals Related to Bile Acid Metabolism. Front Mol Biosci 2021; 7:598369. [PMID: 33521051 PMCID: PMC7843463 DOI: 10.3389/fmolb.2020.598369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/23/2020] [Indexed: 12/11/2022] Open
Abstract
Metabolomics has been increasingly applied to biomarker discovery, as untargeted metabolic profiling represents a powerful exploratory tool for identifying causal links between biomarkers and disease phenotypes. In the present work, we used untargeted metabolomics to investigate plasma specimens of rats, dogs, and mice treated with small-molecule drugs designed for improved glycemic control of type 2 diabetes mellitus patients via activation of GPR40. The in vivo pharmacology of GPR40 is not yet fully understood. Compounds targeting this receptor have been found to induce drug-induced liver injury (DILI). Metabolomic analysis facilitating an integrated UPLC-TWIMS-HRMS platform was used to detect metabolic differences between treated and non-treated animals within two 4-week toxicity studies in rat and dog, and one 2-week toxicity study in mouse. Multivariate statistics of untargeted metabolomics data subsequently revealed the presence of several significantly upregulated endogenous compounds in the treated animals whose plasma level is known to be affected during DILI. A specific bile acid metabolite useful as endogenous probe for drug-drug interaction studies was identified (chenodeoxycholic acid-24 glucuronide), as well as a metabolic precursor indicative of acidic bile acid biosynthesis (7α-hydroxy-3-oxo-4-cholestenoic acid). These results correlate with typical liver toxicity parameters on the individual level.
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Affiliation(s)
- Hannes Doerfler
- Department of Drug Metabolism & Pharmacokinetics, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany
| | - Dana-Adriana Botesteanu
- Department of Drug Discovery Sciences, Boehringer Ingelheim RCV GmbH & Co KG, Vienna, Austria
| | - Stefan Blech
- Department of Drug Metabolism & Pharmacokinetics, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany
| | - Ralf Laux
- Department of Drug Metabolism & Pharmacokinetics, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany
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4
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Kaszycki JL, La Rotta A, Colsch B, Fenaille F, Dauly C, Kamleh A, Wu C. Separation of biologically relevant isomers on an Orbitrap mass spectrometer using high-resolution drift tube ion mobility and varied drift gas mixtures. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33 Suppl 2:3-10. [PMID: 30772932 DOI: 10.1002/rcm.8414] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 02/08/2019] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
RATIONALE Atmospheric pressure drift tube ion mobility is a powerful addition to the Orbitrap mass spectrometer enabling direct separation of isomers. Apart from offering high resolving power in a compact design, it also facilitates optimization of the separation gas, as shown here for a series of biologically relevant isomer pairs. METHODS An Excellims MA3100 High-Resolution Atmospheric Pressure Ion Mobility Spectrometer (HR-IMS) was coupled to a Thermo Scientific™ Q Exactive™ Focus hybrid quadrupole-Orbitrap™ mass spectrometer, using an Excellims Directspray™ Electrospray Ionization source and a gas mixture setup to provide various drift gases (air, CO2 and mixtures). This instrument combination was used to separate isomers of eight pairs of metabolites and gangliosides, optimizing drift gas conditions for best separation of each set. RESULTS All but one of the isomers pairs provided could be partially or fully separated by the HR-IMS-MS combination using ion mobility drift times. About half of the separated compounds showed significantly better analytical separation when analyzed in a mixture of CO2 and air rather than air or CO2 alone. Resolving power of up to 102 was achieved using the 10 cm atmospheric drift tube ion mobility add-on for the Orbitrap mass spectrometer. CONCLUSIONS The present analysis demonstrates the usefulness of using atmospheric drift tube IMS on an Orbitrap mass spectrometer to characterize the isomeric composition of samples. It also highlights the potential benefits of being able to quickly optimize the drift gas composition to selectively maximize the mobility difference for isomer separation.
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Affiliation(s)
| | | | - Benoit Colsch
- Service de Pharmacologie et d'Immunoanalyse, Laboratoire d'Etude du Métabolisme des Médicaments, CEA, INRA, Université Paris Saclay, MetaboHUB, F-91191, Gif-sur-Yvette, France
| | - François Fenaille
- Service de Pharmacologie et d'Immunoanalyse, Laboratoire d'Etude du Métabolisme des Médicaments, CEA, INRA, Université Paris Saclay, MetaboHUB, F-91191, Gif-sur-Yvette, France
| | | | | | - Ching Wu
- Excellims Corporation, Acton, MA, USA
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5
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Wright ZVF, McCarthy S, Dickman R, Reyes FE, Sanchez-Martinez S, Cryar A, Kilford I, Hall A, Takle AK, Topf M, Gonen T, Thalassinos K, Tabor AB. The Role of Disulfide Bond Replacements in Analogues of the Tarantula Toxin ProTx-II and Their Effects on Inhibition of the Voltage-Gated Sodium Ion Channel Na v1.7. J Am Chem Soc 2017; 139:13063-13075. [PMID: 28880078 PMCID: PMC5618157 DOI: 10.1021/jacs.7b06506] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
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Spider
venom toxins, such as Protoxin-II (ProTx-II), have recently
received much attention as selective Nav1.7 channel blockers,
with potential to be developed as leads for the treatment of chronic
nocioceptive pain. ProTx-II is a 30-amino acid peptide with three
disulfide bonds that has been reported to adopt a well-defined inhibitory
cystine knot (ICK) scaffold structure. Potential drawbacks with such
peptides include poor pharmacodynamics and potential scrambling of
the disulfide bonds in vivo. In order to address
these issues, in the present study we report the solid-phase synthesis
of lanthionine-bridged analogues of ProTx-II, in which one of the
three disulfide bridges is replaced with a thioether linkage, and
evaluate the biological properties of these analogues. We have also
investigated the folding and disulfide bridging patterns arising from
different methods of oxidation of the linear peptide precursor. Finally,
we report the X-ray crystal structure of ProTx-II to atomic resolution;
to our knowledge this is the first crystal structure of an ICK spider
venom peptide not bound to a substrate.
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Affiliation(s)
- Zoë V F Wright
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Stephen McCarthy
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Rachael Dickman
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Francis E Reyes
- Janelia Research Campus, Howard Hughes Medical Institute , Ashburn, Virginia 20147, United States
| | - Silvia Sanchez-Martinez
- Janelia Research Campus, Howard Hughes Medical Institute , Ashburn, Virginia 20147, United States
| | - Adam Cryar
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London , Gower Street, London WC1E 6BT, United Kingdom.,Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck College, University of London , London WC1E 7HX, United Kingdom
| | - Ian Kilford
- European Knowledge Centre, Eisai Limited , Mosquito Way, Hatfield, Hertfordshire AL10 9SN, United Kingdom
| | - Adrian Hall
- European Knowledge Centre, Eisai Limited , Mosquito Way, Hatfield, Hertfordshire AL10 9SN, United Kingdom
| | - Andrew K Takle
- European Knowledge Centre, Eisai Limited , Mosquito Way, Hatfield, Hertfordshire AL10 9SN, United Kingdom
| | - Maya Topf
- Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck College, University of London , London WC1E 7HX, United Kingdom
| | - Tamir Gonen
- Janelia Research Campus, Howard Hughes Medical Institute , Ashburn, Virginia 20147, United States
| | - Konstantinos Thalassinos
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London , Gower Street, London WC1E 6BT, United Kingdom.,Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck College, University of London , London WC1E 7HX, United Kingdom
| | - Alethea B Tabor
- Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom
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6
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Diversity in Gold Finger Structure Elucidated by Traveling‐Wave Ion Mobility Mass Spectrometry. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612494] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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7
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Du Z, de Paiva REF, Nelson K, Farrell NP. Diversity in Gold Finger Structure Elucidated by Traveling‐Wave Ion Mobility Mass Spectrometry. Angew Chem Int Ed Engl 2017; 56:4464-4467. [DOI: 10.1002/anie.201612494] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/13/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Zhifeng Du
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
| | | | - Kristina Nelson
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
| | - Nicholas P. Farrell
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
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8
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Li H, Bendiak B, Siems WF, Gang DR, Hill HH. Determining the Isomeric Heterogeneity of Neutral Oligosaccharide-Alditols of Bovine Submaxillary Mucin Using Negative Ion Traveling Wave Ion Mobility Mass Spectrometry. Anal Chem 2015; 87:2228-35. [DOI: 10.1021/ac503754k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hongli Li
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Brad Bendiak
- Department
of Cell and Developmental Biology, Program in Structural
Biology and Biophysics, University of Colorado, Health Sciences Center, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - William F. Siems
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - David R. Gang
- Institute of Biological
Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Herbert H. Hill
- Department
of Chemistry, Washington State University, Pullman, Washington 99164, United States
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9
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Alexeev Y, Fedorov DG, Shvartsburg AA. Effective Ion Mobility Calculations for Macromolecules by Scattering on Electron Clouds. J Phys Chem A 2014; 118:6763-72. [DOI: 10.1021/jp505012c] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuri Alexeev
- Argonne
Leadership Computing Facility, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Dmitri G. Fedorov
- Nanosystem
Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
| | - Alexandre A. Shvartsburg
- Biological
Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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10
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Li Z, Dilger JM, Pejaver V, Smiley D, Arnold RJ, Mooney SD, Mukhopadhyay S, Radivojac P, Clemmer DE. Intrinsic Size Parameters for Palmitoylated and Carboxyamidomethylated Peptides. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 2014; 368:6-14. [PMID: 26023288 PMCID: PMC4443490 DOI: 10.1016/j.ijms.2014.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Cross sections for 61 palmitoylated peptides and 73 cysteine-unmodified peptides are determined and used together with a previously obtained tryptic peptide library to derive a set of intrinsic size parameters (ISPs) for the palmitoyl (Pal) group (1.26 ± 0.04), carboxyamidomethyl (Am) group (0.92 ± 0.04), and the 20 amino acid residues to assess the influence of Pal- and Am-modification on cysteine and other amino acid residues. These values highlight the influence of the intrinsic hydrophobic and hydrophilic nature of these modifications on the overall cross sections. As a part of this analysis, we find that ISPs derived from a database of a modifier on one amino acid residue (CysPal) can be applied on the same modification group on different amino acid residues (SerPal and TyrPal). Using these ISP values, we are able to calculate peptide cross sections to within ± 2% of experimental values for 83% of Pal-modified peptide ions and 63% of Am-modified peptide ions. We propose that modification groups should be treated as individual contribution factors, instead of treating the combination of the particular group and the amino acid residue they are on as a whole when considering their effects on the peptide ion mobility features.
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Affiliation(s)
- Zhiyu Li
- Department of Chemistry, Indiana University, Bloomington, IN 47405
| | | | - Vikas Pejaver
- Department of Computer Science and Informatics, Indiana University, Bloomington, IN 47405
| | - David Smiley
- Department of Chemistry, Indiana University, Bloomington, IN 47405
| | - Randy J Arnold
- Department of Chemistry, Indiana University, Bloomington, IN 47405
| | - Sean D Mooney
- Buck Institute for Research on Aging, Novato, CA 94945
| | | | - Predrag Radivojac
- Department of Computer Science and Informatics, Indiana University, Bloomington, IN 47405
| | - David E Clemmer
- Department of Chemistry, Indiana University, Bloomington, IN 47405
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11
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Pessôa GDS, Pilau EJ, Gozzo FC, Arruda MAZ. Ion mobility spectrometry focusing on speciation analysis of metals/metalloids bound to carbonic anhydrase. Anal Bioanal Chem 2013; 405:7653-60. [PMID: 23722891 DOI: 10.1007/s00216-013-7064-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 05/07/2013] [Accepted: 05/10/2013] [Indexed: 11/26/2022]
Abstract
In the present work, traveling wave ion mobility spectrometry-mass spectrometry (TWIMS-MS) was applied to speciation analysis of metalloproteins. The influence of pH on complexation conditions between some metals and bovine carbonic anhydrase was evaluated from pH 6 to 9, as well as the time involved in their complexation (0-24 h). Employing TWIMS-MS, two conformational states of bovine carbonic anhydrase were observed with charge states of +12 and +11; these configurations being evaluated in terms of the folded state of the apo form and this protein (at charge state +11) being linked to barium, lead, copper, and zinc in their divalent forms. Metalloprotein speciation analysis was carried out for copper (Cu(+) and Cu(2+)), lead (Pb(2+) and Pb(4+)), and selenium (Se(4+) and Se(6+)) species complexed with bovine carbonic anhydrase. Mobilities of all complexed species were compared, also considering the apo form of this protein.
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Affiliation(s)
- Gustavo de Souza Pessôa
- Spectrometry, Sample Preparation and Mechanization Group, GEPAM, Institute of Chemistry, University of Campinas-UNICAMP, P.O. Box 6154, Campinas, SP, 13083-970, Brazil
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12
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Merkley ED, Baker ES, Crowell KL, Orton DJ, Taverner T, Ansong C, Ibrahim YM, Burnet MC, Cort JR, Anderson GA, Smith RD, Adkins JN. Mixed-isotope labeling with LC-IMS-MS for characterization of protein-protein interactions by chemical cross-linking. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:444-9. [PMID: 23423792 PMCID: PMC3594340 DOI: 10.1007/s13361-012-0565-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 12/05/2012] [Accepted: 12/09/2012] [Indexed: 05/20/2023]
Abstract
Chemical cross-linking of proteins followed by proteolysis and mass spectrometric analysis of the resulting cross-linked peptides provides powerful insight into the quaternary structure of protein complexes. Mixed-isotope cross-linking (a method for distinguishing intermolecular cross-links) was coupled with liquid chromatography, ion mobility spectrometry and mass spectrometry (LC-IMS-MS) to provide an additional separation dimension to the traditional cross-linking approach. This method produced multiplet m/z peaks that are aligned in the IMS drift time dimension and serve as signatures of intermolecular cross-linked peptides. We developed an informatics tool to use the amino acid sequence information inherent in the multiplet spacing for accurate identification of the cross-linked peptides. Because of the separation of cross-linked and non-cross-linked peptides in drift time, our LC-IMS-MS approach was able to confidently detect more intermolecular cross-linked peptides than LC-MS alone.
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Affiliation(s)
- Eric D Merkley
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
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13
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Lapthorn C, Pullen F, Chowdhry BZ. Ion mobility spectrometry-mass spectrometry (IMS-MS) of small molecules: separating and assigning structures to ions. MASS SPECTROMETRY REVIEWS 2013; 32:43-71. [PMID: 22941854 DOI: 10.1002/mas.21349] [Citation(s) in RCA: 183] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2011] [Revised: 01/29/2012] [Accepted: 03/08/2012] [Indexed: 05/11/2023]
Abstract
The phenomenon of ion mobility (IM), the movement/transport of charged particles under the influence of an electric field, was first observed in the early 20th Century and harnessed later in ion mobility spectrometry (IMS). There have been rapid advances in instrumental design, experimental methods, and theory together with contributions from computational chemistry and gas-phase ion chemistry, which have diversified the range of potential applications of contemporary IMS techniques. Whilst IMS-mass spectrometry (IMS-MS) has recently been recognized for having significant research/applied industrial potential and encompasses multi-/cross-disciplinary areas of science, the applications and impact from decades of research are only now beginning to be utilized for "small molecule" species. This review focuses on the application of IMS-MS to "small molecule" species typically used in drug discovery (100-500 Da) including an assessment of the limitations and possibilities of the technique. Potential future developments in instrumental design, experimental methods, and applications are addressed. The typical application of IMS-MS in relation to small molecules has been to separate species in fairly uniform molecular classes such as mixture analysis, including metabolites. Separation of similar species has historically been challenging using IMS as the resolving power, R, has been low (3-100) and the differences in collision cross-sections that could be measured have been relatively small, so instrument and method development has often focused on increasing resolving power. However, IMS-MS has a range of other potential applications that are examined in this review where it displays unique advantages, including: determination of small molecule structure from drift time, "small molecule" separation in achiral and chiral mixtures, improvement in selectivity, identification of carbohydrate isomers, metabonomics, and for understanding the size and shape of small molecules. This review provides a broad but selective overview of current literature, concentrating on IMS-MS, not solely IMS, and small molecule applications.
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Affiliation(s)
- Cris Lapthorn
- School of Science, University of Greenwich, Medway Campus, Chatham, Kent ME4 4TB, UK
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14
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Donegan M, Browning M. A REVIEW RECENT DEVELOPMENTS IN SAMPLE IONIZATION INTERFACES USED IN MASS SPECTROMETRY. J LIQ CHROMATOGR R T 2012. [DOI: 10.1080/10826076.2012.714595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | - Marc Browning
- a Bristol-Myers Squibb , Wallingford , Connecticut , USA
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15
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Recent advances in metabolite identification and quantitative bioanalysis by LC–Q-TOF MS. Bioanalysis 2012; 4:937-59. [DOI: 10.4155/bio.12.43] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The need for rapid, sensitive and effective identification and quantitation of drugs and metabolites to accelerate drug discovery and development has given MS its central position in drug metabolism and pharmacokinetic research. This review attempts to orient the readers with respect to hybrid Q-TOF MS, which enables accurate mass measurement and generates information-rich datasets. The key properties of the Q-TOF MS system, including mass accuracy, resolution, scan speed and dynamic range, are herein discussed. Developments on tandem separation techniques (e.g., UHPLC® and ion mobility spectrometry), data acquisition and data-mining methods (e.g., mass defect, product/neutral loss, isotope pattern filters and background subtraction) that facilitate qualitative and quantitative analysis are then examined. The performance and versatility of LC–Q-TOF MS are thoroughly illustrated by its applications in metabolite identification and quantitative bioanalysis. Future perspectives are also discussed.
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16
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Lalli PM, Iglesias BA, Deda DK, Toma HE, de Sa GF, Daroda RJ, Araki K, Eberlin MN. Resolution of isomeric multi-ruthenated porphyrins by travelling wave ion mobility mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:263-268. [PMID: 22223311 DOI: 10.1002/rcm.5314] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The ability of travelling wave ion mobility mass spectrometry (TWIM-MS) to resolve cationic meta/para and cis/trans isomers of mono-, di-, tri- and tetra-ruthenated supramolecular porphyrins was investigated. All meta isomers were found to be more compact than the para isomers and therefore mixtures of all isomeric pairs could be properly resolved with baseline or close to baseline peak-to-peak resolution (R(p-p)). Di-substituted cis/trans isomers were found, however, to present very similar drift times and could not be resolved. N(2) and CO(2) were tested as the drift gas, and similar α but considerably better values of R(p) and R(p-p) were always observed for CO(2).
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Affiliation(s)
- Priscila M Lalli
- ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas, UNICAMP 13083-970, Campinas, SP, Brazil
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17
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The coming of age of liquid chromatography coupled to tandem mass spectrometry in the endocrinology laboratory. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 883-884:50-8. [DOI: 10.1016/j.jchromb.2011.08.027] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Accepted: 08/19/2011] [Indexed: 02/07/2023]
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18
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Fasciotti M, Gomes AF, Gozzo FC, Iglesias BA, de Sá GF, Daroda RJ, Toganoh M, Furuta H, Araki K, Eberlin MN. Corrole isomers: intrinsic gas-phase shapes via traveling wave ion mobility mass spectrometry and dissociation chemistries via tandem mass spectrometry. Org Biomol Chem 2012; 10:8396-402. [DOI: 10.1039/c2ob26209f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Harvey SR, Macphee CE, Barran PE. Ion mobility mass spectrometry for peptide analysis. Methods 2011; 54:454-61. [PMID: 21669288 DOI: 10.1016/j.ymeth.2011.05.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 05/04/2011] [Accepted: 05/22/2011] [Indexed: 02/03/2023] Open
Abstract
The use of ion mobility mass spectrometry has grown rapidly over the last two decades. This powerful analytical platform now forms an attractive prospect for comprehensive analysis of many different molecular species, including chemically complex biological molecules. This paper describes the application of IM-MS to the study of peptides. We focus on three different ion mobility devices that are most frequently found in tandem with mass spectrometers. These are instruments using linear drift tubes (LDT), those using travelling wave ion guides (TWIGS) and those employing high field asymmetric ion mobility spectrometry (FAIMS). Each technique is described. Examples are given on the use of IM-MS for the determination of peptide structure, the study of peptides that form amyloid fibrils, and the study of complex peptide mixtures in proteomic investigations. We describe and comment on the methodologies used and the outlook for this developing analytical technique.
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Affiliation(s)
- Sophie R Harvey
- The School of Chemistry, The University of Edinburgh, Edinburgh EH9 3JJ, United Kingdom
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