1
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Lessa TLADS, Correia TML, Santos TCD, da Silva RP, Silva BPD, Cavallini MCM, Rocha LS, Souza Peixoto A, Cugnasca BS, Cervi G, Correra TC, Gonçalves AC, Festuccia WTL, Cunha TM, Yatsuda R, de Magalhães ACM, Dos Santos AA, Meotti FC, Queiroz RF. A novel diselenide attenuates the carrageenan-induced inflammation by reducing neutrophil infiltration and the resulting tissue damage in mice. Free Radic Res 2024; 58:229-248. [PMID: 38588405 DOI: 10.1080/10715762.2024.2336566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/06/2024] [Indexed: 04/10/2024]
Abstract
Selenium-containing compounds have emerged as promising treatment for redox-based and inflammatory diseases. This study aimed to investigate the in vitro and in vivo anti-inflammatory activity of a novel diselenide named as dibenzyl[diselanediyIbis(propane-3-1diyl)] dicarbamate (DD). DD reacted with HOCl (k = 9.2 x 107 M-1s-1), like glutathione (k = 1.2 x 108 M-1s-1), yielding seleninic and selenonic acid derivatives, and it also decreased HOCl formation by activated human neutrophils (IC50=4.6 μM) and purified myeloperoxidase (MPO) (IC50=3.8 μM). However, tyrosine, MPO-I and MPO-II substrates, did not restore HOCl formation in presence of DD. DD inhibited the oxidative burst in dHL-60 cells with no toxicity up to 25 µM for 48h. Next, an intraperitoneal administration of 25, 50, and 75 mg/kg DD decreased total leukocyte, neutrophil chemotaxis, and inflammation markers (MPO activity, lipid peroxidation, albumin exudation, nitrite, TNF-α, IL-1β, CXCL1/KC, and CXCL2/MIP-2) on a murine model of carrageenan-induced peritonitis. Likewise, 50 mg/kg DD (i.p.) decreased carrageenan-induced paw edema over 5h. Histological and immunohistochemistry analyses of the paw tissue showed decreased neutrophil count, edema area, and MPO, carbonylated, and nitrated protein staining. Furthermore, DD treatment decreased the fMLP-induced chemotaxis of human neutrophils (IC50=3.7 μM) in vitro with no toxicity. Lastly, DD presented no toxicity in a single-dose model using mice (50 mg/kg, i.p.) over 15 days and in Artemia salina bioassay (50 to 2000 µM), corroborating findings from in silico toxicological study. Altogether, these results demonstrate that DD attenuates carrageenan-induced inflammation mainly by reducing neutrophil migration and the resulting damage from MPO-mediated oxidative burst.
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Affiliation(s)
- Tássia Liz Araújo Dos Santos Lessa
- Programa Multicêntrico de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Estadual do Sudoeste da Bahia, Vitória da Conquista, Brazil
| | - Thiago Macêdo Lopes Correia
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Universidade Federal da Bahia, Vitória da Conquista, Brazil
| | - Talita Costa Dos Santos
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Universidade Federal da Bahia, Vitória da Conquista, Brazil
| | | | | | - Maria Cláudia Magalhães Cavallini
- Center for Research in Inflammatory Diseases, Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Leonardo Silva Rocha
- Programa Multicêntrico de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Estadual do Sudoeste da Bahia, Vitória da Conquista, Brazil
| | | | | | - Gustavo Cervi
- Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Thiago C Correra
- Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | | | | | - Thiago Mattar Cunha
- Center for Research in Inflammatory Diseases, Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Regiane Yatsuda
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Universidade Federal da Bahia, Vitória da Conquista, Brazil
- Instituto Multidisciplinar de Saúde, Universidade Federal da Bahia, Vitória da Conquista, Brazil
| | - Amélia Cristina Mendes de Magalhães
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Universidade Federal da Bahia, Vitória da Conquista, Brazil
- Instituto Multidisciplinar de Saúde, Universidade Federal da Bahia, Vitória da Conquista, Brazil
| | | | | | - Raphael Ferreira Queiroz
- Programa Multicêntrico de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Estadual do Sudoeste da Bahia, Vitória da Conquista, Brazil
- Departamento de Ciências da Saúde, Universidade Estadual do Sudoeste da Bahia, Vitória da Conquista, Brazil
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2
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Ribeiro FWM, Omari I, Thomas GT, Paul M, Williams PJH, McIndoe JS, Correra TC. Microstructural Analysis of Benzoxazine Cationic Ring-Opening Polymerization Pathways. Macromol Rapid Commun 2024; 45:e2300470. [PMID: 37716013 DOI: 10.1002/marc.202300470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/06/2023] [Indexed: 09/18/2023]
Abstract
Herein, an evaluation of the initial step of benzoxazine polymerization is presented by mass spectrometry, with a focus on differentiating the phenoxy and phenolic products formed by distinct pathways of the cationic ring opening polymerization (ROP) mechanism of polybenzoxazine formation. The use of infrared multiple photon dissociation (IRMPD) and ion mobility spectrometry (IMS) techniques allows for differentiation of the two pathways and provides valuable insights into the ROP mechanism. The results suggest that type I pathway is favored in the initial stages of the reaction yielding the phenoxy product, while type II product should be observed at later stages when the phenoxy product would interconvert to the most stable type II phenolic product. Overall, the findings presented here provide important information on the initial step of the benzoxazine polymerization, allowing the development of optimal polymerization conditions and represents a way to evaluate other multifunctional polymerization processes.
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Affiliation(s)
- Francisco W M Ribeiro
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Isaac Omari
- Department of Chemistry, University of Victoria, P. O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Gilian T Thomas
- Department of Chemistry, University of Victoria, P. O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Mathias Paul
- Department of Chemistry, University of Victoria, P. O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Peter J H Williams
- Department of Chemistry, University of Victoria, P. O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - J Scott McIndoe
- Department of Chemistry, University of Victoria, P. O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Thiago C Correra
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, 05508-000, Brazil
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3
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Fernandes AS, Obeid G, Laureno TJN, Correra TC. Protonated and Sodiated Cyclophosphamide Fragmentation Pathways Evaluation by Infrared Multiple Photon Dissociation Spectroscopy. J Phys Chem A 2023. [PMID: 37285455 DOI: 10.1021/acs.jpca.3c01323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cyclophosphamide (CP or CTX) is a widely used antineoplastic agent, and the evaluation of its efficacy and its impacts on the environment are dependent on tandem mass spectrometry (MSn) techniques. Because there is no dedicated experimental study to characterize the actual molecular nature of the CP fragments upon collision-induced dissociation, this work evaluated the chemical structure of the fragments of protonated and sodiated CP and CP protonation sites by infrared multiple photon dissociation spectroscopy supported by density functional theory calculations. This study allowed us to propose a new fragment structure and confirm the nature of multiple fragments, including those relevant for transitions used for CP quantitative and qualitative analyses. Our results also show that there is no spectroscopic evidence that can rule out the existence of aziridinium fragments, making it clear that further studies on the nature of iminium/aziridinium fragments in the gas phase are necessary.
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Affiliation(s)
- André S Fernandes
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo 05508-000, São Paulo, Brazil
| | - Guilherme Obeid
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo 05508-000, São Paulo, Brazil
| | - Tiago J N Laureno
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo 05508-000, São Paulo, Brazil
| | - Thiago C Correra
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo 05508-000, São Paulo, Brazil
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4
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Obeid G, Moraes GO, Penna TC, Schenberg LA, Ducati LC, Correra TC. Solvation effects on glyphosate protonation and deprotonation states evaluated by mass spectrometry and explicit solvation simulations. J Chem Phys 2023; 158:054306. [PMID: 36754805 DOI: 10.1063/5.0134003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Glyphosate is a widely used herbicide, and its protonation and deprotonation sites are fundamental to understanding its properties. In this work, the sodiated, protonated, and deprotonated glyphosate were evaluated in the gas phase by infrared multiple photon dissociation spectroscopy to determine the exact nature of these coordination, protonation, and deprotonation states in the gas phase. In this context, Natural Bond Orbital analyses were carried out to unravel interactions that govern glyphosate (de)protonation states in the gas phase. The solvent effect on the protonation/deprotonation equilibria was also investigated by implicit (Solvation Model Based on Density and polarizable continuum models) and explicit solvation models (Monte Carlo and Molecular Dynamics simulations). These results show that glyphosate is protonated in the phosphonate group in the gas phase because of the strong hydrogen bond between the carboxylic oxygen (O7) and the protonated phosphonate group (O8-H19), while the most stable species in water is protonated at the amino group because of the preferential interaction of the NH2 + group and the solvent water molecules. Similarly, deprotonated glyphosate [Glyp-H]- was shown to be deprotonated at the phosphonate group in the gas phase but not in solution, also because of the preferential solvation of the NH2 + group present in the other deprotomers. Therefore, these results show that the stabilization of the protonated amino group by the solvent molecules is the governing factor of the (de)protonation equilibrium of glyphosate in water.
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Affiliation(s)
- Guilherme Obeid
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Gustavo O Moraes
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Tatiana C Penna
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Leonardo A Schenberg
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Lucas C Ducati
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
| | - Thiago C Correra
- Department of Fundamental Chemistry, Institute of Chemistry-University of São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, São Paulo, SP, Brazil
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5
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Soares DM, Gonçalves LP, Machado CO, Esteves LC, Stevani CV, Oliveira CC, Dörr FA, Pinto E, Adachi FM, Hotta CT, Bastos EL. Reannotation of Fly Amanita l-DOPA Dioxygenase Gene Enables Its Cloning and Heterologous Expression. ACS OMEGA 2022; 7:16070-16079. [PMID: 35571802 PMCID: PMC9097196 DOI: 10.1021/acsomega.2c01365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/11/2022] [Indexed: 06/15/2023]
Abstract
The l-DOPA dioxygenase of Amanita muscaria (AmDODA) participates in the biosynthesis of betalain- and hygroaurin-type natural pigments. AmDODA is encoded by the dodA gene, whose DNA sequence was inferred from cDNA and gDNA libraries almost 30 years ago. However, reports on its heterologous expression rely on either the original 5'-truncated cDNA plasmid or artificial gene synthesis. We provide unequivocal evidence that the heterologous expression of AmDODA from A. muscaria specimens is not possible by using the coding sequence previously inferred for dodA. Here, we rectify and reannotate the full-length coding sequence for AmDODA and express a 205-aa His-tagged active enzyme, which was used to produce the l-DOPA hygroaurin, a rare fungal pigment. Moreover, AmDODA and other isozymes from bacteria were submitted to de novo folding using deep learning algorithms, and their putative active sites were inferred and compared. The wide catalytic pocket of AmDODA and the presence of the His-His-His and His-His-Asp motifs can provide insight into the dual cleavage of l-DOPA at positions 2,3 and 4,5 as per the mechanism proposed for nonheme dioxygenases.
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Affiliation(s)
- Douglas
M. M. Soares
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Letícia
C. P. Gonçalves
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
| | - Caroline O. Machado
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
| | - Larissa C. Esteves
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
| | - Cassius V. Stevani
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
| | - Carla C. Oliveira
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Felipe A. Dörr
- Departamento
de Análises Clínicas e Toxicológicas, Faculdade
de Ciências Farmacêuticas, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Ernani Pinto
- Departamento
de Análises Clínicas e Toxicológicas, Faculdade
de Ciências Farmacêuticas, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
- Centro
de Energia Nuclear na Agricultura, Universidade
de São Paulo, 13400-970 Piracicaba, São Paulo Brazil
| | - Flávia M.
M. Adachi
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Carlos T. Hotta
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, São Paulo Brazil
| | - Erick L. Bastos
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São
Paulo, São Paulo Brazil
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6
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Carlo MJ, Patrick AL. Infrared multiple photon dissociation (IRMPD) spectroscopy and its potential for the clinical laboratory. J Mass Spectrom Adv Clin Lab 2022; 23:14-25. [PMID: 34993503 PMCID: PMC8713122 DOI: 10.1016/j.jmsacl.2021.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 12/09/2021] [Accepted: 12/09/2021] [Indexed: 11/29/2022] Open
Abstract
Infrared multiple photon dissociation (IRMPD) spectroscopy is a powerful tool used to probe the vibrational modes-and, by extension, the structure-of an ion within an ion trap mass spectrometer. Compared to traditional FTIR spectroscopy, IRMPD spectroscopy has advantages including its sensitivity and its relative ability to handle complex mixtures. While IRMPD has historically been a technique for fundamental analyses, it is increasingly being applied in a more analytical fashion. Notable recent demonstrations pertinent to the clinical laboratory and adjacent interests include analysis of modified amino acids/residues and carbohydrates, structural elucidation (including isomeric differentiation) of metabolites, identification of novel illicit drugs, and structural studies of various biomolecules and pharmaceuticals. Improvements in analysis time, coupling to commercial instruments, and integration with separations methods are all drivers toward the realization of these analytical applications. Additional improvements in these areas, along with advances in benchtop tunable IR sources and increased cross-discipline collaboration, will continue to drive innovation and widespread adoption. The goal of this tutorial article is to briefly present the fundamentals and instrumentation of IRMPD spectroscopy, as an overview of the utility of this technique for helping to answer questions relevant to clinical analysis, and to highlight limitations to widespread adoption, as well as promising directions in which the field may be heading.
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Key Words
- 2-AEP, 2-aminoethylphosphonic acid
- 2P1EA, 2-phenyl-1-ethanolamine
- CIVP, cryogenic ion vibrational predissociation spectroscopy
- CLIO, Centre Laser Infrarouge d’Orsay
- DFT, density functional theory
- FA, fluoroamphetamine
- FEL, free electron laser
- FELIX, Free Electron Laser for Infrared eXperiments
- FMA, fluoromethamphetamine
- FTICR, Fourier transform ion cyclotron resonance
- GC–MS, gas chromatography-mass spectrometry
- GSNO, S- nitro glutathione
- GlcNAc, n-Acetylglucosamine
- IR, infrared
- IR2MS3, infrared-infrared double-resonance multi-stage mass spectrometry
- IRMPD, infrared multiple photon dissociation (IRMPD)
- IRMPD-MS, infrared multiple photon dissociation spectroscopy mass spectrometry
- IRPD, infrared predissociation spectroscopy
- IVR, intramolecular vibrational redistribution
- Infrared multiple photon dissociation spectroscopy
- LC, liquid chromatography
- LC-MS, liquid chromatography-mass spectrometry
- LC-MS/MS, liquid chromatography-tandem mass spectrometry
- MDA, methylenedioxyamphetamine
- MDMA, methylenedioxymethamphetamine
- MMC, methylmethcathinone
- MS/MS, tandem mass spectrometry
- MSn, multi-stage mass spectrometry
- Mass spectrometry
- Metabolites
- NANT, N-acetyl-N-nitrosotryptophan
- OPO/A, optical parametric oscillator/amplifier
- PTM, post-translational modification
- Pharmaceuticals
- Post-translational modifications
- SNOCys, S-nitrosocysteine
- UV, ultraviolet
- UV-IR, ultraviolet-infrared
- Vibrational spectroscopy
- cw, continuous wave
- α-PVP, alpha-pyrrolidinovalerophenone
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Affiliation(s)
- Matthew J. Carlo
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Amanda L. Patrick
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
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7
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van Outersterp RE, Martens J, Peremans A, Lamard L, Cuyckens F, Oomens J, Berden G. Evaluation of table-top lasers for routine infrared ion spectroscopy in the analytical laboratory. Analyst 2021; 146:7218-7229. [PMID: 34724520 PMCID: PMC8607882 DOI: 10.1039/d1an01406d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 10/20/2021] [Indexed: 01/12/2023]
Abstract
Infrared ion spectroscopy is increasingly recognized as a method to identify mass spectrometry-detected analytes in many (bio)chemical areas and its integration in analytical laboratories is now on the horizon. Commercially available quadrupole ion trap mass spectrometers are attractive ion spectroscopy platforms but operate at relatively high pressures. This promotes collisional deactivation which directly interferes with the multiple-photon excitation process required for ion spectroscopy. To overcome this, infrared lasers having a high instantaneous power are required and therefore a majority of analytical studies have been performed at infrared free electron laser facilities. Proliferation of the technique to routine use in analytical laboratories requires table-top infrared lasers and optical parametric oscillators (OPOs) are the most suitable candidates, offering both relatively high intensities and reasonable spectral tuning ranges. Here, we explore the potential of a range of commercially available high-power OPOs for ion spectroscopy, comparing systems with repetition rates of 10 Hz, 20 kHz, 80 MHz and a continuous-wave (cw) system. We compare the performance for various molecular ions and show that the kHz and MHz repetition-rate systems outperform cw and 10 Hz systems in photodissociation efficiency and offer several advantages in terms of cost-effectiveness and practical implementation in an analytical laboratory not specialized in laser spectroscopy.
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Affiliation(s)
- Rianne E van Outersterp
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands.
| | - Jonathan Martens
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands.
| | - André Peremans
- Laboratoire Physique de la Matière et du Rayonnement (P.M.R), Université de Namur, 5000 Namur, Belgium
| | | | - Filip Cuyckens
- Drug Metabolism & Pharmacokinetics, Janssen R&D, Beerse, Belgium
| | - Jos Oomens
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands.
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Giel Berden
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands.
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8
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van Geenen FAMG, Kranenburg RF, van Asten AC, Martens J, Oomens J, Berden G. Isomer-Specific Two-Color Double-Resonance IR 2MS 3 Ion Spectroscopy Using a Single Laser: Application in the Identification of Novel Psychoactive Substances. Anal Chem 2021; 93:2687-2693. [PMID: 33470107 PMCID: PMC7859929 DOI: 10.1021/acs.analchem.0c05042] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
![]()
The capability of
an ion trap mass
spectrometer to store ions for
an arbitrary amount of time allows the use of a single infrared (IR)
laser to perform two-color double resonance IR–IR spectroscopic
experiments on mass-to-charge (m/z) selected ions. In this single-laser IR2MS3 scheme, one IR laser frequency is used to remove a selected set
of isomers from the total trapped ion population and the second IR
laser frequency, from the same laser, is used to record the IR spectrum
of the remaining precursor ions. This yields isomer-specific vibrational
spectra of the m/z-selected ions,
which can reveal the structure and identity of the initially co-isolated
isomeric species. The use of a single laser greatly reduces the experimental
complexity of two-color IR2MS3 and enhances
its application in fields employing analytical MS. In this work, we
demonstrate the methodology by acquiring single-laser IR2MS3 spectra in a forensic context, identifying two previously
unidentified isomeric novel psychoactive substances (NPS) from a sample
that was confiscated by the Amsterdam Police.
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Affiliation(s)
- Fred A M G van Geenen
- FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Ruben F Kranenburg
- Forensic Laboratory, Unit Amsterdam, Dutch National Police, Kabelweg 25, 1014 BA Amsterdam, The Netherlands.,Van't Hoff Institute for Molecular Sciences, University of Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Arian C van Asten
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands.,Co van Ledden Hulsebosch Center (CLHC), Amsterdam Center for Forensic Science and Medicine, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Jonathan Martens
- FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Jos Oomens
- FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands.,Van't Hoff Institute for Molecular Sciences, University of Amsterdam, P.O. Box 94157, 1090 GD Amsterdam, The Netherlands
| | - Giel Berden
- FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
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