1
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Gladchuk AS, Gorbunov AY, Keltsieva OA, Ilyushonok SK, Babakov VN, Shilovskikh VV, Kolonitskii PD, Stepashkin NA, Soboleva A, Muradymov MZ, Krasnov NV, Sukhodolov NG, Selyutin AA, Frolov A, Podolskaya EP. Coating of a MALDI target with metal oxide nanoparticles by droplet-free electrospraying – a versatile tool for in situ enrichment of human globin adducts of halogen-containing drug metabolites. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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2
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Lou X, van Dongen JLJ, Peeters JW, Janssen HM. Disentangle a Complex MALDI TOF Mass Spectrum of Polyethylene Glycols into Three Separate Spectra via Selective Formation of Protonated Ions and Sodium or Potassium Adducts. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:2333-2337. [PMID: 36351181 PMCID: PMC9732877 DOI: 10.1021/jasms.2c00250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/27/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
In MALDI TOF MS analysis, complicated mass spectra can usually be recorded for polymers with high affinities to protons and alkali metal ions. For these polymers, protonated ions and sodium and potassium adducts can often be formed concomitantly. By distributing these ions into three separate spectra of protonated ions, sodium adducts, and potassium adducts, significantly simplified spectra can be acquired. Mass spectra consisting of only sodium or potassium adducts can often be obtained by simply adding sodium salt and potassium salt, respectively. We report here a method to selectively generate protonated ions. A polyethylene glycol (PEG) sample with amino end groups was selected as the model polymer and α-cyano-4-hydroxycinnamic acid (CHCA) as the matrix. Octadecylamine (ODA) or a mixture of a tetrabutylammonium (TBA) salt and an ammonium salt was used as the co-matrix to inhibit the release of sodium and potassium ions and their related adducts into the MALDI gas phase plume. By depositing the polymer sample on top of a preloaded layer of CHCA with a co-matrix, the generation of Na+ and K+ adducts is suppressed, while [ODA + H]+ and NH4+ released from the preloaded matrix layer can serve as protonation reagents to protonate the polymer molecules via proton transfer reactions. It is clearly demonstrated that disentangling a complex mass spectrum filled densely with various series of ions into three separate spectra, with each one consisting of only one type of ions, allows unambiguous identification of mass peaks and greatly helps the interpretation of MS results.
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Affiliation(s)
- Xianwen Lou
- Laboratory
of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
- SyMO
Chem B.V., P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | - Joost L. J. van Dongen
- Laboratory
of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
- SyMO
Chem B.V., P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | | | - Henk M. Janssen
- SyMO
Chem B.V., P.O. Box 513, 5600 MBEindhoven, The Netherlands
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3
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Gorbunov A, Bardin A, Ilyushonok S, Kovach J, Petrenko A, Sukhodolov N, Krasnov K, Krasnov N, Zorin I, Obornev A, Babakov V, Radilov A, Podolskaya E. Multiwell photocatalytic microreactor device integrating drug biotransformation modeling and sample preparation on a MALDI target. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Ficarro SB, Max Alexander W, Tavares I, Marto JA. Open source fraction collector/MALDI spotter for proteomics. HARDWAREX 2022; 11:e00305. [PMID: 35518277 PMCID: PMC9062586 DOI: 10.1016/j.ohx.2022.e00305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 04/07/2022] [Accepted: 04/09/2022] [Indexed: 06/14/2023]
Abstract
We describe a complete open-source hardware/software solution for high performance thermostatted peptide fraction collection to support mass spectrometry experiments with complex proteomes. The instrument is easy to assemble using parts readily available through retail channels at a fraction of the cost compared to typical commercial systems. Control software is written in Python allowing for rapid customization. We demonstrate several useful applications, including the automated deposition of LC separated peptides for matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) as well as collection and concatenation of peptide fractions from nanoflow HPLC separations.
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5
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Alexovič M, Urban PL, Tabani H, Sabo J. Recent advances in robotic protein sample preparation for clinical analysis and other biomedical applications. Clin Chim Acta 2020; 507:104-116. [PMID: 32305536 DOI: 10.1016/j.cca.2020.04.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 02/06/2023]
Abstract
Discovery of new protein biomarker candidates has become a major research goal in the areas of clinical chemistry, analytical chemistry, and biomedicine. These important species constitute the molecular target when it comes to diagnosis, prognosis, and further monitoring of disease. However, their analysis requires powerful, selective and high-throughput sample preparation and product (analyte) characterisation approaches. In general, manual sample processing is tedious, complex and time-consuming, especially when large numbers of samples have to be processed (e.g., in clinical studies). Automation via microtiter-plate platforms involving robotics has brought improvements in high-throughput performance while comparable or even better precisions and repeatability (intra-day, inter-day) were achieved. At the same time, waste production and exposure of laboratory personnel to hazards were reduced. In comprehensive protein analysis workflows (e.g., liquid chromatography-tandem mass spectrometry analysis), sample preparation is an unavoidable step. This review surveys the recent achievements in automation of bottom-up and top-down protein and/or proteomics approaches. Emphasis is put on high-end multi-well plate robotic platforms developed for clinical analysis and other biomedical applications. The literature from 2013 to date has been covered.
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Affiliation(s)
- Michal Alexovič
- Department of Medical and Clinical Biophysics, Faculty of Medicine, University of P.J. Šafárik in Košice, 04011 Košice, Slovakia.
| | - Pawel L Urban
- Department of Chemistry, National Tsing Hua University, 101, Sec 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
| | - Hadi Tabani
- Department of Environmental Geology, Research Institute of Applied Sciences (ACECR), Shahid Beheshti University, Tehran, Iran
| | - Ján Sabo
- Department of Medical and Clinical Biophysics, Faculty of Medicine, University of P.J. Šafárik in Košice, 04011 Košice, Slovakia
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6
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Fernández R, Garate J, Tolentino-Cortez T, Herraiz A, Lombardero L, Ducrocq F, Rodríguez-Puertas R, Trifilieff P, Astigarraga E, Barreda-Gómez G, Fernández JA. Microarray and Mass Spectrometry-Based Methodology for Lipid Profiling of Tissues and Cell Cultures. Anal Chem 2019; 91:15967-15973. [PMID: 31751120 DOI: 10.1021/acs.analchem.9b04529] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The recent developments in mass spectrometry have revealed the importance of lipids as biomarkers in the context of different diseases and as indicators of the cell's homeostasis. However, further advances are required to unveil the complex relationships between lipid classes and lipid species with proteins. Here, we present a new methodology that combines microarrays with mass spectrometry to obtain the lipid fingerprint of samples of a different nature in a standardized and fast way, with minimal sample consumption. As a proof of concept, we use the methodology to obtain the lipid fingerprint of 20 rat tissues and to create a lipid library for tissue classification. Then, we combine those results with immunohistochemistry and enzymatic assays to unveil the relationship between some lipid species and two enzymes. Finally, we demonstrate the performance of the methodology to explore changes in lipid composition of the nucleus accumbens from mice subjected to two lipid diets.
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Affiliation(s)
- Roberto Fernández
- Research Department , IMG Pharma Biotech S.L., BIC Bizkaia (612), 48160 - Derio , Spain
| | | | | | - Ainara Herraiz
- Research Department , IMG Pharma Biotech S.L., BIC Bizkaia (612), 48160 - Derio , Spain
| | | | - Fabien Ducrocq
- University of Bordeaux, INRA, Bordeaux INP, NutriNeuro, UMR 1286 , F-33000 , Bordeaux , France
| | - Rafael Rodríguez-Puertas
- Neurodegenerative Diseases , Biocruces Bizkaia Health Research Institute , 48903 Barakaldo , Spain
| | - Pierre Trifilieff
- University of Bordeaux, INRA, Bordeaux INP, NutriNeuro, UMR 1286 , F-33000 , Bordeaux , France
| | - Egoitz Astigarraga
- Research Department , IMG Pharma Biotech S.L., BIC Bizkaia (612), 48160 - Derio , Spain
| | - Gabriel Barreda-Gómez
- Research Department , IMG Pharma Biotech S.L., BIC Bizkaia (612), 48160 - Derio , Spain
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7
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Mawale R, Halenkovič T, Bouška M, Gutwirth J, Nazabal V, Bora PL, Pečinka L, Prokeš L, Havel J, Němec P. Mass spectrometric investigation of amorphous Ga-Sb-Se thin films. Sci Rep 2019; 9:10213. [PMID: 31308483 PMCID: PMC6629872 DOI: 10.1038/s41598-019-46767-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 07/05/2019] [Indexed: 11/11/2022] Open
Abstract
Amorphous chalcogenide thin films are widely studied due to their enhanced properties and extensive applications. Here, we have studied amorphous Ga-Sb-Se chalcogenide thin films prepared by magnetron co-sputtering, via laser ablation quadrupole ion trap time-of-flight mass spectrometry. Furthermore, the stoichiometry of the generated clusters was determined which gives information about individual species present in the plasma plume originating from the interaction of amorphous chalcogenides with high energy laser pulses. Seven different compositions of thin films (Ga content 7.6–31.7 at. %, Sb content 5.2–31.2 at. %, Se content 61.2–63.3 at. %) were studied and in each case about ~50 different clusters were identified in positive and ~20–30 clusters in negative ion mode. Assuming that polymers can influence the laser desorption (laser ablation) process, we have used parafilm as a material to reduce the destruction of the amorphous network structure and/or promote the laser ablation synthesis of heavier species from those of lower mass. In this case, many new and higher mass clusters were identified. The maximum number of (40) new clusters was detected for the Ga-Sb-Se thin film containing the highest amount of antimony (31.2 at. %). This approach opens new possibilities for laser desorption ionization/laser ablation study of other materials. Finally, for selected binary and ternary clusters, their structure was calculated by using density functional theory optimization procedure.
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Affiliation(s)
- Ravi Mawale
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210, Pardubice, Czech Republic
| | - Tomáš Halenkovič
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210, Pardubice, Czech Republic.,Institut des Sciences Chimiques de Rennes, UMR-CNRS 6226, Equipe Verres et Céramiques, Université de Rennes 1, 35042, Rennes, France
| | - Marek Bouška
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210, Pardubice, Czech Republic
| | - Jan Gutwirth
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210, Pardubice, Czech Republic
| | - Virginie Nazabal
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210, Pardubice, Czech Republic.,Institut des Sciences Chimiques de Rennes, UMR-CNRS 6226, Equipe Verres et Céramiques, Université de Rennes 1, 35042, Rennes, France
| | - Pankaj Lochan Bora
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.,CEITEC-Central European Institute of Technology Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Lukáš Pečinka
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Lubomír Prokeš
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.,Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 61137, Brno, Czech Republic.,CEPLANT, R&D Centre for Low-Cost Plasma and Nanotechnology Surface Modification, Masaryk University, Kotlářská 2, 61137, Brno, Czech Republic
| | - Josef Havel
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Petr Němec
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210, Pardubice, Czech Republic.
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8
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Cenci L, Bertolla M, Anesi A, Ambrosi E, Guella G, Bossi AM. Micro- versus nano-sized molecularly imprinted polymers in MALDI-TOF mass spectrometry analysis of peptides. Anal Bioanal Chem 2017; 409:6253-6261. [DOI: 10.1007/s00216-017-0569-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/12/2017] [Accepted: 08/04/2017] [Indexed: 11/24/2022]
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9
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2011-2012. MASS SPECTROMETRY REVIEWS 2017; 36:255-422. [PMID: 26270629 DOI: 10.1002/mas.21471] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
This review is the seventh update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2012. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, and fragmentation are covered in the first part of the review and applications to various structural types constitute the remainder. The main groups of compound are oligo- and poly-saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:255-422, 2017.
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Affiliation(s)
- David J Harvey
- Department of Biochemistry, Oxford Glycobiology Institute, University of Oxford, Oxford, OX1 3QU, UK
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10
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Bertolla M, Cenci L, Anesi A, Ambrosi E, Tagliaro F, Vanzetti L, Guella G, Bossi AM. Solvent-Responsive Molecularly Imprinted Nanogels for Targeted Protein Analysis in MALDI-TOF Mass Spectrometry. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6908-6915. [PMID: 28151640 DOI: 10.1021/acsami.6b16291] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Molecular imprinted poly(acrylamido)-derivative nanogels have shown their selectivity to bind the protein human serum transferrin (HTR) and also showed their capability for instantaneous solvent-induced modification upon the addition of acetonitrile. Integrated to matrix-assisted laser desorption/ionization time-of-flight mass analysis the HTR-imprinted solvent-responsive nanogels permitted the determination of HTR straight from serum and offered novel perspectives in targeted protein analysis.
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Affiliation(s)
- Maddalena Bertolla
- Department of Physics, University of Trento , Via Sommarive 14, 38123 Trento, Italy
| | - Lucia Cenci
- Department of Biotechnology, University of Verona , Strada Le Grazie 15, 37134 Verona, Italy
| | - Andrea Anesi
- Department of Physics, University of Trento , Via Sommarive 14, 38123 Trento, Italy
| | - Emmanuele Ambrosi
- Department of Molecular Sciences and Nanosystems, University Cà Foscari Venezia , Via Torino 155/b, 30173 Venice, Italy
| | - Franco Tagliaro
- Department of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona , P.le L.A. Scuro 10, 37134 Verona, Italy
| | - Lia Vanzetti
- Fondazione Bruno Kessler CMM-MNF , Via Sommarive 18, 38123 Trento, Italy
| | - Graziano Guella
- Department of Physics, University of Trento , Via Sommarive 14, 38123 Trento, Italy
| | - Alessandra Maria Bossi
- Department of Biotechnology, University of Verona , Strada Le Grazie 15, 37134 Verona, Italy
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11
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Joshi S, Zuilhof H, van Beek TA, Nielen MWF. Biochip Spray: Simplified Coupling of Surface Plasmon Resonance Biosensing and Mass Spectrometry. Anal Chem 2017; 89:1427-1432. [PMID: 28208290 PMCID: PMC5348099 DOI: 10.1021/acs.analchem.6b04012] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
A simplified coupling
of surface plasmon resonance (SPR) immuno-biosensing
with ambient ionization mass spectrometry (MS) was developed. It combines
two orthogonal analysis techniques: the biosensing capability of SPR
and the chemical identification power of high resolution MS. As a
proof-of-principle, deoxynivalenol (DON), an important mycotoxin,
was captured using an SPR gold chip containing an antifouling layer
and monoclonal antibodies against the toxin and, after washing, the
chip could be taken out and analyzed by direct spray MS of the biosensor
chip to confirm the identity of DON. Furthermore, cross-reacting conjugates
of DON present in a naturally contaminated beer could be successfully
identified, thus showing the potential of rapid identification of
(un)expected cross-reacting molecules.
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Affiliation(s)
- Sweccha Joshi
- Laboratory of Organic Chemistry, Wageningen University & Research , Stippeneng 4, 6708 WE Wageningen, The Netherlands.,TI-COAST , Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University & Research , Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Teris A van Beek
- Laboratory of Organic Chemistry, Wageningen University & Research , Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Michel W F Nielen
- Laboratory of Organic Chemistry, Wageningen University & Research , Stippeneng 4, 6708 WE Wageningen, The Netherlands.,RIKILT, Wageningen University & Research , P.O. Box 230, 6700 AE Wageningen, The Netherlands
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12
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Smolira A, Hałas S, Wessely-Szponder J. Quantification of the PR-39 cathelicidin compound in porcine blood by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:1811-1816. [PMID: 26331932 DOI: 10.1002/rcm.7284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 07/20/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE The PR-39 porcine cathelicidin occurs naturally in animal neutrophils. Its main function is antimicrobial activity, which potentially can be used in antibiotic treatments in veterinary medicine. Investigations concerning such a use require the detection and quantification of PR-39 in a given sample. The aim of this work is to determine the concentration of PR-39 contained in porcine blood. METHODS Prior to matrix-assisted laser desorption/ionization (MALDI) analysis, the porcine blood sample was subjected to crude extraction in order to release the active form of PR-39 from the neutrophil granules. Next, gel filtration chromatography was performed to separate PR-39 from other cathelicidins present in porcine blood. Positive ion MALDI time-of-flight (TOF) mass spectra of the resulting portion of lyophilisate with unknown PR-39 content were acquired in linear mode. To quantify PR-39 in the lyophilisate sample, the standard addition method was applied. The PR-39 concentration obtained in the lyophilisate sample was then converted into the peptide concentration in porcine blood. RESULTS The linear fit function of the constructed calibration curve indicates an excellent correlation between the PR-39 peak intensity and the added quantity of synthetic PR-39 (R(2) = 0.994) and a low relative standard deviation of the slope = 1.98%. From the x-intercept of the straight line, we estimated the PR-39 concentration in porcine blood to be 20.5 ± 4.6 ng/mL. CONCLUSIONS The MALDI method was successfully applied for the quantitative analysis of PR-39 found in porcine blood. Compared with other available methods, it is relatively easy, inexpensive and not time-consuming. Despite the method having lower accuracy than the enzyme-linked immunosorbent assay (ELISA), the results obtained here, by a much simpler method, are in good agreement with the literature data.
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Affiliation(s)
- Anna Smolira
- Mass Spectrometry Laboratory, Institute of Physics, Maria Curie Sklodowska University, Pl. M. Curie-Skłodowskiej 1, 20-031, Lublin, Poland
| | - Stanisław Hałas
- Mass Spectrometry Laboratory, Institute of Physics, Maria Curie Sklodowska University, Pl. M. Curie-Skłodowskiej 1, 20-031, Lublin, Poland
| | - Joanna Wessely-Szponder
- Department of Pathophysiology, Chair of Preclinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Life Sciences, Akademicka 12, 20-033, Lublin, Poland
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13
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Cenci L, Anesi A, Busato M, Guella G, Bossi AM. Molecularly imprinted polymers coupled to matrix assisted laser desorption ionization mass spectrometry for femtomoles detection of cardiac troponin I peptides. J Mol Recognit 2015; 29:41-50. [PMID: 26373625 DOI: 10.1002/jmr.2494] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 07/21/2015] [Accepted: 07/29/2015] [Indexed: 12/20/2022]
Abstract
Molecularly imprinted polymers (MIPs) were combined to MALDI-TOF-MS to evaluate a selective enrichment (SE) method for the determination of clinically relevant biomarkers from complex biological samples. The concept was proven with the myocardial injury marker Troponin I (cTnI). In a first part, MIP materials entailed for the recognition of cTnI epitopes (three peptides selected) were prepared and characterized in dimensions (0.7-2μm), dissociation constants (58-817 nM), kinetics of binding (5-60 min), binding capacity (ca. 1.5 µg/mg polymer), imprinting factors (3 > IF > 5) and selectivity for the peptide epitope. Then, the MIPs, incubated with cTnI peptides and spotted on the target with the DHB matrix, were assayed for the desorption of the peptides in MALDI-TOF-MS. The measured detection limit was ca. 300 femtomols. Finally, the MIP-SE MALDI-TOF-MS was tested for its ability to enrich in the cTnI peptides from a complex sample, mimic of serum (i.e. 81 peptides of digested albumin). The MIP-SE MALDI-TOF-MS successfully enriched in cTnI peptides from the complex sample proving the technique could offer a flexible platform to prepare entailed materials suitable for diagnostic purposes.
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Affiliation(s)
- Lucia Cenci
- University of Verona, Department of Biotechnology, Strada Le Grazie 15, 37134, Verona, Italy
| | - Andrea Anesi
- University of Trento, Department of Physics, Via Sommarive 14, 38123, Trento, Italy
| | - Mirko Busato
- University of Verona, Department of Biotechnology, Strada Le Grazie 15, 37134, Verona, Italy
| | - Graziano Guella
- University of Trento, Department of Physics, Via Sommarive 14, 38123, Trento, Italy
| | - Alessandra Maria Bossi
- University of Verona, Department of Biotechnology, Strada Le Grazie 15, 37134, Verona, Italy
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14
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Krásný L, Pompach P, Strnadová M, Hynek R, Vališ K, Havlíček V, Novák P, Volný M. High-throughput workflow for identification of phosphorylated peptides by LC-MALDI-TOF/TOF-MS coupled to in situ enrichment on MALDI plates functionalized by ion landing. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:802-811. [PMID: 26169134 DOI: 10.1002/jms.3586] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 02/23/2015] [Accepted: 02/24/2015] [Indexed: 06/04/2023]
Abstract
We report an MS-based workflow for identification of phosphorylated peptides from trypsinized protein mixtures and cell lysates that is suitable for high-throughput sample analysis. The workflow is based on an in situ enrichment on matrix-assisted laser desorption/ionization (MALDI) plates that were functionalized by TiO2 using automated ion landing apparatus that can operate unsupervised. The MALDI plate can be functionalized by TiO2 into any array of predefined geometry (here, 96 positions for samples and 24 for mass calibration standards) made compatible with a standard MALDI spotter and coupled with high-performance liquid chromatography. The in situ MALDI plate enrichment was compared with a standard precolumn-based separation and achieved comparable or better results than the standard method. The performance of this new workflow was demonstrated on a model mixture of proteins as well as on Jurkat cells lysates. The method showed improved signal-to-noise ratio in a single MS spectrum, which resulted in better identification by MS/MS and a subsequent database search. Using the workflow, we also found specific phosphorylations in Jurkat cells that were nonspecifically activated by phorbol 12-myristate 13-acetate. These phosphorylations concerned the mitogen-activated protein kinase/extracellular signal-regulated kinase signaling pathway and its targets and were in agreement with the current knowledge of this signaling cascade. Control sample of non-activated cells was devoid of these phosphorylations. Overall, the presented analytical workflow is able to detect dynamic phosphorylation events in minimally processed mammalian cells while using only a short high-performance liquid chromatography gradient.
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Affiliation(s)
- Lukáš Krásný
- Institute of Microbiology ASCR, v.v.i., Vídeňská 1083, Prague, 142 20, Czech Republic
- Institute of Chemical Technology, Technická 5, Prague, 16628, Czech Republic
| | - Petr Pompach
- Institute of Microbiology ASCR, v.v.i., Vídeňská 1083, Prague, 142 20, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 8, Prague, 128 40, Czech Republic
| | - Marcela Strnadová
- Institute of Microbiology ASCR, v.v.i., Vídeňská 1083, Prague, 142 20, Czech Republic
| | - Radovan Hynek
- Institute of Chemical Technology, Technická 5, Prague, 16628, Czech Republic
| | - Karel Vališ
- Institute of Microbiology ASCR, v.v.i., Vídeňská 1083, Prague, 142 20, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 8, Prague, 128 40, Czech Republic
| | - Vladimír Havlíček
- Institute of Microbiology ASCR, v.v.i., Vídeňská 1083, Prague, 142 20, Czech Republic
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, 17.listopadu 12, Olomouc, 771 46, Czech Republic
| | - Petr Novák
- Institute of Microbiology ASCR, v.v.i., Vídeňská 1083, Prague, 142 20, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 8, Prague, 128 40, Czech Republic
| | - Michael Volný
- Applied Physics Laboratory, University of Washington, 1013 NE 40th St, Seattle, WA, 98105, USA
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15
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Single-cell imaging for the study of oncometabolism. Methods Enzymol 2015. [PMID: 24924134 DOI: 10.1016/b978-0-12-801329-8.00010-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Metabolic profiling is commonly employed to investigate the global metabolic alterations of malignant cells or tissues. In the latter setting, neoplastic lesions are separated from adjacent, healthy tissues and their metabolites are quantified upon a chromatographic run coupled to mass spectrometry. Changes in the abundance of specific metabolites are then mapped on metabolic networks and the underlying metabolic circuitries are investigated as potential targets for the development of novel anticancer drugs. This approach, however, does not take into account the intrinsic heterogeneity of neoplastic lesions, which contain a large amount of non-transformed cells. To circumvent this issue, techniques have been developed that allow for the imaging of metabolites at the single-cell level. Here, we summarize established protocols that are suitable for imaging metabolites in animal cells (be them malignant or not) as well as in plant and prokaryotic cells. These methods are relevant for the study of the metabolic alterations that accompany oncogenesis and tumor progression.
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16
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Quero S, Párraga-Niño N, García-Núñez M, Sabrià M. [Proteomics in infectious diseases]. Enferm Infecc Microbiol Clin 2015; 34:253-60. [PMID: 25583331 DOI: 10.1016/j.eimc.2014.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 07/22/2014] [Accepted: 07/30/2014] [Indexed: 11/27/2022]
Abstract
Infectious diseases have a high incidence in the population, causing a major impact on global health. In vitro culture of microorganisms is the first technique applied for infection diagnosis which is laborious and time consuming. In recent decades, efforts have been focused on the applicability of "Omics" sciences, highlighting the progress provided by proteomic techniques in the field of infectious diseases. This review describes the management, processing and analysis of biological samples for proteomic research.
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Affiliation(s)
- Sara Quero
- Unitat de Malalties Infeccioses, Fundació Institut d'Investigació Germans Trias i Pujol, Badalona, Barcelona, España; Universitat Autònoma de Barcelona, Cerdanyola, Barcelona, España
| | - Noemí Párraga-Niño
- Unitat de Malalties Infeccioses, Fundació Institut d'Investigació Germans Trias i Pujol, Badalona, Barcelona, España.
| | - Marian García-Núñez
- Unitat de Malalties Infeccioses, Fundació Institut d'Investigació Germans Trias i Pujol, Badalona, Barcelona, España; CIBER de Enfermedades Respiratorias, Bunyola, Illes Balears, España
| | - Miquel Sabrià
- Universitat Autònoma de Barcelona, Cerdanyola, Barcelona, España; CIBER de Enfermedades Respiratorias, Bunyola, Illes Balears, España; Unitat de Malalties Infeccioses, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, España
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17
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A simple MALDI plate functionalization by Vmh2 hydrophobin for serial multi-enzymatic protein digestions. Anal Bioanal Chem 2014; 407:487-96. [DOI: 10.1007/s00216-014-8309-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 10/28/2014] [Accepted: 10/30/2014] [Indexed: 12/14/2022]
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18
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Abstract
Unprecedented access to the biology of single cells is now feasible, enabled by recent technological advancements that allow us to manipulate and measure sparse samples and achieve a new level of resolution in space and time. This review focuses on advances in tools to study single cells for specific areas of biology. We examine both mature and nascent techniques to study single cells at the genomics, transcriptomics, and proteomics level. In addition, we provide an overview of tools that are well suited for following biological responses to defined perturbations with single-cell resolution. Techniques to analyze and manipulate single cells through soluble and chemical ligands, the microenvironment, and cell-cell interactions are provided. For each of these topics, we highlight the biological motivation, applications, methods, recent advances, and opportunities for improvement. The toolbox presented in this review can function as a starting point for the design of single-cell experiments.
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19
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de Rond T, Danielewicz M, Northen T. High throughput screening of enzyme activity with mass spectrometry imaging. Curr Opin Biotechnol 2014; 31:1-9. [PMID: 25129648 DOI: 10.1016/j.copbio.2014.07.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 07/29/2014] [Accepted: 07/29/2014] [Indexed: 10/24/2022]
Abstract
Mass spectrometry imaging (MSI) has found a diversity of applications ranging from localizing metabolites and proteins in tissues to investigating microbial interactions, and as a result is perhaps the fastest growing subfield of mass spectrometry. Advances in surface mass spectrometry technologies are equally applicable to the analysis of arrayed samples. One promising field in which this capacity has been leveraged is the high-throughput analysis of enzyme activity, an important step in the development of a wide range of biotechnologies. This review article describes several emerging approaches that seek to improve the quality and scope of this application of MSI.
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Affiliation(s)
- Tristan de Rond
- Dept. of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Megan Danielewicz
- Lawrence Berkeley National Lab, One Cyclotron Road, Berkeley, CA 94720, USA
| | - Trent Northen
- Lawrence Berkeley National Lab, One Cyclotron Road, Berkeley, CA 94720, USA; Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608, USA.
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20
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Longobardi S, Gravagnuolo AM, Rea I, De Stefano L, Marino G, Giardina P. Hydrophobin-coated plates as matrix-assisted laser desorption/ionization sample support for peptide/protein analysis. Anal Biochem 2014; 449:9-16. [DOI: 10.1016/j.ab.2013.11.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 11/15/2013] [Accepted: 11/18/2013] [Indexed: 01/03/2023]
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21
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Ibáñez C, García-Cañas V, Valdés A, Simó C. Direct Mass Spectrometry-Based Approaches in Metabolomics. FUNDAMENTALS OF ADVANCED OMICS TECHNOLOGIES: FROM GENES TO METABOLITES 2014. [DOI: 10.1016/b978-0-444-62651-6.00010-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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22
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Wessely-Szponder J, Szponder T, Bobowiec R, Smolira A. The influence of porcine cathelicidins on neutrophils isolated from rabbits in the course of bone graft implantation. WORLD RABBIT SCIENCE 2013. [DOI: 10.4995/wrs.2013.1350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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23
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Pabst M, Fagerer SR, Köhling R, Küster SK, Steinhoff R, Badertscher M, Wahl F, Dittrich PS, Jefimovs K, Zenobi R. Self-Aliquoting Microarray Plates for Accurate Quantitative Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry. Anal Chem 2013; 85:9771-6. [DOI: 10.1021/ac4021775] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin Pabst
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse
10, 8093 Zürich, Switzerland
| | - Stephan R. Fagerer
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse
10, 8093 Zürich, Switzerland
| | - Rudolf Köhling
- Sigma-Aldrich, Industriestrasse 25, 9471 Buchs, Switzerland
| | - Simon K. Küster
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse
10, 8093 Zürich, Switzerland
| | - Robert Steinhoff
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse
10, 8093 Zürich, Switzerland
| | - Martin Badertscher
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse
10, 8093 Zürich, Switzerland
| | - Fabian Wahl
- Sigma-Aldrich, Industriestrasse 25, 9471 Buchs, Switzerland
| | - Petra S. Dittrich
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse
10, 8093 Zürich, Switzerland
| | - Konstantins Jefimovs
- Swiss Federal Laboratories for Material Science and Technology EMPA, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Renato Zenobi
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse
10, 8093 Zürich, Switzerland
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24
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Signor L, Boeri Erba E. Matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometric analysis of intact proteins larger than 100 kDa. J Vis Exp 2013. [PMID: 24056304 PMCID: PMC3857990 DOI: 10.3791/50635] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Effectively determining masses of proteins is critical to many biological studies (e.g. for structural biology investigations). Accurate mass determination allows one to evaluate the correctness of protein primary sequences, the presence of mutations and/or post-translational modifications, the possible protein degradation, the sample homogeneity, and the degree of isotope incorporation in case of labelling (e.g.13C labelling). Electrospray ionisation (ESI) mass spectrometry (MS) is widely used for mass determination of denatured proteins, but its efficiency is affected by the composition of the sample buffer. In particular, the presence of salts, detergents, and contaminants severely undermines the effectiveness of protein analysis by ESI-MS. Matrix-assisted laser desorption/ionization (MALDI) MS is an attractive alternative, due to its salt tolerance and the simplicity of data acquisition and interpretation. Moreover, the mass determination of large heterogeneous proteins (bigger than 100 kDa) is easier by MALDI-MS due to the absence of overlapping high charge state distributions which are present in ESI spectra. Here we present an accessible approach for analysing proteins larger than 100 kDa by MALDI-time of flight (TOF). We illustrate the advantages of using a mixture of two matrices (i.e. 2,5-dihydroxybenzoic acid and α-cyano-4-hydroxycinnamic acid) and the utility of the thin layer method as approach for sample deposition. We also discuss the critical role of the matrix and solvent purity, of the standards used for calibration, of the laser energy, and of the acquisition time. Overall, we provide information necessary to a novice for analysing intact proteins larger than 100 kDa by MALDI-MS.
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Affiliation(s)
- Luca Signor
- Institute of Structural Biology "J.P. Ebel", UMR5075, Commissariat à L'Energie Atomique et aux Energies Alternatives (CEA), Centre National de la Recherche Scientifique (CNRS), Université J. Fourier
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25
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Stigter E, de Jong G, van Bennekom W. Coupling surface-plasmon resonance and mass spectrometry to quantify and to identify ligands. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2012.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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26
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Sobieściak TD, Zielenkiewicz P. Non-specific clustering of histidine tagged green fluorescent protein mediated by surface interactions: the collective effect in the protein-adsorption behaviour. RSC Adv 2013. [DOI: 10.1039/c3ra42154f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Gopal J, Hasan N, Wu HF. Fabrication of titanium based MALDI bacterial chips for rapid, sensitive and direct analysis of pathogenic bacteria. Biosens Bioelectron 2013; 39:57-63. [DOI: 10.1016/j.bios.2012.06.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/07/2012] [Accepted: 06/19/2012] [Indexed: 11/29/2022]
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28
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Kandiah M, Urban PL. Advances in ultrasensitive mass spectrometry of organic molecules. Chem Soc Rev 2013; 42:5299-322. [DOI: 10.1039/c3cs35389c] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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29
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Stolowitz ML. On-target and nanoparticle-facilitated selective enrichment of peptides and proteins for analysis by MALDI-MS. Proteomics 2012; 12:3438-50. [DOI: 10.1002/pmic.201200252] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 08/27/2012] [Accepted: 09/20/2012] [Indexed: 01/09/2023]
Affiliation(s)
- Mark L. Stolowitz
- Canary Center at Stanford for Cancer Early Detection; Department of Radiology; Stanford University School of Medicine; Palo Alto CA USA
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30
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Liu YC, Chang HT, Chiang CK, Huang CC. Pulsed-laser desorption/ionization of clusters from biofunctional gold nanoparticles: implications for protein detections. ACS APPLIED MATERIALS & INTERFACES 2012; 4:5241-5248. [PMID: 22998761 DOI: 10.1021/am3011934] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this paper, we describe a pulsed-laser desorption/ionization mass spectrometry (LDI-MS) approach for the detection of proteins with femtomolar sensitivity through the analysis of gold (Au) clusters desorbed from aptamer-modified gold nanoparticles (Apt-AuNPs) on a nitrocellulose membrane (NCM). After the target protein (thrombin) was selectively captured by the surface-bound 29-mer thrombin-binding aptamer (TBA(29)), the thrombin/TBA(29)-AuNP complexes were concentrated and deposited onto the NCM to form a highly efficient background-free surface-assisted LDI substrate. Under pulsed laser irradiation (355 nm), the binding of thrombin decreased the desorption and/or ionization efficiencies of the Au atoms from the AuNP surfaces. The resulting decreases in the intensities of the signals for Au clusters in the mass spectra provided a highly amplified target-labeling indicator for the targeted protein. Under optimized conditions, this probe was highly sensitive (limit of detection: ca. 50 fM) and selective (by at least 1000-fold over other proteins) toward thrombin; it also improved reproducibility (<5%) of ion production by presenting a more-homogeneous substrate surface, thereby enabling LDI-based measurements for the accurate and precise quantification of thrombin in human serum. This novel LDI-MS approach allows high-speed analyses of low-abundance thrombin with ultrahigh sensitivity; decorating the AuNP surfaces with other aptamers also allowed amplification of other biological signals.
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Affiliation(s)
- Yin-Chun Liu
- Institute of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
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31
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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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32
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Krásný L, Pompach P, Strohalm M, Obsilova V, Strnadová M, Novák P, Volný M. In-situ enrichment of phosphopeptides on MALDI plates modified by ambient ion landing. JOURNAL OF MASS SPECTROMETRY : JMS 2012; 47:1294-302. [PMID: 23019160 DOI: 10.1002/jms.3081] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report substantial in-situ enrichment of phosphopeptides in peptide mixtures using titanium and zirconium dioxide-coated matrix assisted laser desorption-ionization (MALDI) plates prepared by recently reported ambient ion landing deposition technique. The technique was able to modify four common materials currently used for MALDI targets (stainless steel, aluminum, indium-tin oxide glass and polymeric anchor chip). The structure of the deposited dioxide was investigated by electron microscopy, and different surfaces were compared and discussed in this study. Two standard proteins were used to test the enrichment capabilities of modified MALDI plates: casein and in-vitro phosphorylated trehalase. The enrichment of casein tryptic digest resulted in identification of 20 phosphopeptides (including miscleavages). Trehalase was used as a suitable model of larger protein that provided more complex peptide mixture after the trypsin digestion. All four possible phosphorylation sites in trehalase were identified and up to seven phosphopetides were found (including methionine oxidations and miscleavages). Two different mass spectrometers, MALDI-Fourier transform ion cyclotron resonance (FTICR) and MALDI-time of flight, were used to detect the phosphopeptides from modified MALDI plates after the enrichment procedure. It was observed that the desorption-ionization phenomena on the modified surfaces are not critically influenced by the parameters of the different MALDI ion sources (e.g. different pressure, different extraction voltages), and thus the presence of dioxide layer on the standard MALDI plate does not significantly interfere with the main MALDI processes. The detection of phosphopeptides after the enrichment could be done by both instruments. Desorption electrospray ionization coupled to the FTICR was also tested, but, unlike MALDI, it did not provide satisfactory results.
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Affiliation(s)
- Lukáš Krásný
- Institute of Microbiology of the ASCR, vvi, Prague, Czech Republic
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33
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Manikandan M, Hasan N, Wu HF. Rapid and direct detection of attomole adenosine triphosphate (ATP) by MALDI-MS using rutile titania chips. Analyst 2012; 137:5128-34. [PMID: 22993752 DOI: 10.1039/c2an35754b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the rutile titania-based capture of ATP and its application as a MALDI-MS target plate. This chip, when immersed in solutions containing different concentrations of ATP, can capture ATP and lead to its successful detection in MALDI-MS. We have optimized the ideal surface, showing an increased capture efficacy of the 900 °C (rutile) titania surfaces. We demonstrate the use of this chip as a target plate for direct analysis of the attached ATP using MALDI-MS, down to attomolar concentrations. This chip has a promising future for the detection of ATP in environmental samples, which may eventually be used as a pollution indicator in particular environments.
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Affiliation(s)
- Muthu Manikandan
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan
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34
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Fuchs B. Analysis of phospolipids and glycolipids by thin-layer chromatography-matrix-assisted laser desorption and ionization mass spectrometry. J Chromatogr A 2012; 1259:62-73. [PMID: 22503924 DOI: 10.1016/j.chroma.2012.03.068] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 03/14/2012] [Accepted: 03/19/2012] [Indexed: 11/16/2022]
Abstract
Thin-layer chromatography-matrix-assisted laser desorption and ionization mass spectrometry (TLC-MALDI-MS) of organic extracts from biological samples allows untargeted analysis and structural characterization of phospholipids and glycolipids ionized from the near-surface region of a sample separated on a TLC-plate. In particular, MALDI-MS enables the sensitive detection of many analytes directly from the solid surface of an ordinary TLC-plate even without previous staining. It will be shown that the detailed fatty acyl composition of phospholipids can be determined solely by TLC-MALDI-MS without previous derivatization, enzymatic cleavage and/or reversed phase separation. MALDI-time-of-flight (TOF) MS is thus a powerful method in this field due to its high sensitivity, low extent of induced fragmentation and simple, user-friendly performance. This review summarizes the so far available knowledge about combined TLC-MALDI-MS for phospholipid and glycolipid characterization together with the technical workflow and a survey of applications. Finally a perspective on the future of TLC-MALDI-MS is given.
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Affiliation(s)
- Beate Fuchs
- University of Leipzig, Medical Department, Institute of Medical Physics & Biophysics, Härtelstr. 16/18, D-04107 Leipzig, Germany.
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35
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Petroselli G, Erra-Balsells R, David Gara P, Bilmes GM. Photoacoustic and luminescence characterization of nitrogen heterocyclic aromatic UV-MALDI matrices in solution. Photochem Photobiol Sci 2012; 11:1062-8. [DOI: 10.1039/c2pp05388h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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36
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Urban PL, Schmidt AM, Fagerer SR, Amantonico A, Ibañez A, Jefimovs K, Heinemann M, Zenobi R. Carbon-13 labelling strategy for studying the ATP metabolism in individual yeast cells by micro-arrays for mass spectrometry. MOLECULAR BIOSYSTEMS 2011; 7:2837-40. [PMID: 21850345 DOI: 10.1039/c1mb05248a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Isotopic labelling of cellular metabolites, used in conjunction with high-density micro-arrays for mass spectrometry enables observation of ATP metabolism in single yeast cells.
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Affiliation(s)
- Pawel L Urban
- Department of Chemistry and Applied Biosciences, ETH Zurich, Switzerland
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37
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Urban PL, Chang CH, Wu JT, Chen YC. Microscale MALDI Imaging of Outer-Layer Lipids in Intact Egg Chambers from Drosophila melanogaster. Anal Chem 2011; 83:3918-25. [DOI: 10.1021/ac200481j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Pawel L. Urban
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
| | - Chia-Hsien Chang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
| | - June-Tai Wu
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Yu-Chie Chen
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
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