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Chen X, Wang Y, Luo Y, Gao Z, Han T, Zhou H. Composite PVK/SLGO As Matrix for MALDI-TOF MS Detection of Small Molecules in Dual-Ion Mode. ACS OMEGA 2022; 7:39028-39038. [PMID: 36340108 PMCID: PMC9631907 DOI: 10.1021/acsomega.2c04772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Currently, most matrices developed for matrix-assisted laser desorption/ionization mass spectrometry (MALDI-TOF MS) for small-molecule detection are only suitable for the positive or negative ion mode and not the dual-ion mode, except for carbon-based nanomaterials. The lone-pair electrons on the N atom in poly n-vinylcarbazole (PVK) can serve as a Lewis base with strong electron-donation effects, which is favorable for negative ion mode detection. The surface of single-layer graphene oxide (SLGO) contains many oxygen atoms in carboxyl and hydroxyl groups that act as Lewis acids and thereby provides favorable protonation sites for positive ion mode detection. In this study, composite PVK/SLGO was prepared by combining the advantages of amorphous PVK and SLGO. PVK/SLGO was tested as a novel matrix for positive- and negative-ion-mode MALDI-TOF MS for the analysis of amino acids, nucleic acid bases, environmental endocrine disruptors, antibiotics, and various small molecules. PVK/SLGO was compared with PVK, SLGO, and commercially available matrices of 9-aminoacridine (9-AA) and α-cyano-4-hydroxycinnamic acid (CHCA). The PVK/SLGO matrix was demonstrated to be suitable for the positive and negative ion modes, exhibiting high signal intensity and detection sensitivity without background interference. The limits of detection of the aforementioned molecules ranged from 0.1 to 0.0001 and 0.01 to 0.0001 mg/mL in the positive and negative ion modes, respectively. The quantitative determination of enrofloxacin in milk was realized using an internal standard method with a linear range of 0.0001-0.1 mg/mL (R 2 = 0.9991). Furthermore, the PVK/SLGO matrix exhibited high salt tolerance (up to 1000 mmol/L) and stability over 28 consecutive days. Studies regarding its ionization mechanism revealed that the good performance originates from the combined materials acting synergistically. This study provides a foundation for developing bimodal composite matrices and further expands the scope of PVK/SLGO applications.
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Affiliation(s)
- Xiuying Chen
- Key
Laboratory of Medicinal Chemistry and Molecular Diagnosis, College
of Chemical and Environmental Sciences, Hebei University, Baoding 071002, China
- Tianjin
Key Laboratory of Risk Assessment and Control Technology for Environment
and Food Safety, Tianjin Institute of Environmental
and Operational Medicine, Tianjin 300050, China
- Nanpu
Development Zone Administrative Examination and Approval Bureau, Tangshan 063305, China
| | - Yonghui Wang
- Tianjin
Key Laboratory of Risk Assessment and Control Technology for Environment
and Food Safety, Tianjin Institute of Environmental
and Operational Medicine, Tianjin 300050, China
| | - Yuanyuan Luo
- Tianjin
Key Laboratory of Risk Assessment and Control Technology for Environment
and Food Safety, Tianjin Institute of Environmental
and Operational Medicine, Tianjin 300050, China
| | - Zhixian Gao
- Tianjin
Key Laboratory of Risk Assessment and Control Technology for Environment
and Food Safety, Tianjin Institute of Environmental
and Operational Medicine, Tianjin 300050, China
| | - Tie Han
- Tianjin
Key Laboratory of Risk Assessment and Control Technology for Environment
and Food Safety, Tianjin Institute of Environmental
and Operational Medicine, Tianjin 300050, China
| | - Huanying Zhou
- Tianjin
Key Laboratory of Risk Assessment and Control Technology for Environment
and Food Safety, Tianjin Institute of Environmental
and Operational Medicine, Tianjin 300050, China
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Zhu Z, Shen J, Xu Y, Guo H, Kang D, Yu T, Wang H, Xu W, Wang G, Liang Y. The improved performance of MALDI-TOF MS on the analysis of herbal saponins by using DHB-GO composite matrix. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:684-692. [PMID: 31271243 DOI: 10.1002/jms.4385] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 06/21/2019] [Accepted: 06/26/2019] [Indexed: 06/09/2023]
Abstract
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) is an excellent analytical technique for rapid analysis of a variety of molecules with straightforward sample pretreatment. The performance of MALDI-TOF MS is largely dependent on matrix type, and the development of novel MALDI matrices has aroused wide interest. Herein, we devoted to seek more robust MALDI matrix for herbal saponins than previous reported, and ginsenoside Rb1, Re, and notoginsenoside R1 were used as model saponins. At the beginning of the present study, 2,5-dihydroxybenzoic acid (DHB) was found to provide the highest intensity for saponins in four conventional MALDI matrices, yet the heterogeneous cocrystallization of DHB with analytes made signal acquisition somewhat "hit and miss." Then, graphene oxide (GO) was proposed as an auxiliary matrix to improve the uniformity of DHB crystallization due to its monolayer structure and good dispersion, which could result in much better shot-to-shot and spot-to-spot reproducibility of saponin analysis. The satisfactory precision further demonstrated that minute quantities of GO (0.1 μg/spot) could greatly reduce the risk of instrument contamination caused by GO detachment from the MALDI target plate under vacuum. More importantly, the sensitivity and linearity of the standard curve for saponins were improved markedly by DHB-GO composite matrix. Finally, the application of detecting the Rb1 in complex biological sample was exploited in rat plasma and proved it applicable for pharmacokinetic study quickly. This work not only opens a new field for applications of DHB-GO in herbal saponin analysis but also offers new ideas for the development of composite matrices to improve MALDI MS performance.
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Affiliation(s)
- Zhangpei Zhu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - Jiajia Shen
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - Yangfan Xu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - Huimin Guo
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - Dian Kang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - Tengjie Yu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - He Wang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - Wenshuo Xu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - Guangji Wang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
| | - Yan Liang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Tong Jia Xiang 24, Nanjing, 210009, China
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MALDI Profiling and Applications in Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1140:27-43. [DOI: 10.1007/978-3-030-15950-4_2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ling L, Xiao C, Jiang L, Wang S, Li Y, Chen X, Guo X. A cool and high salt-tolerant ionic liquid matrix for preferential ionization of phosphopeptides by negative ion MALDI-MS. NEW J CHEM 2017. [DOI: 10.1039/c7nj01706e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An optimized ILM G3THAP/PA matrix significantly improved the detection of phosphopeptides by negative ion MALDI-MS compared with using 3-AQ/CHCA/ADP and DHB/PA matrices.
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Affiliation(s)
- Ling Ling
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
- Changchun 130021
- P. R. China
| | - Liyan Jiang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University
- Changchun 130012
- P. R. China
| | - Sheng Wang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Ying Li
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
- Changchun 130021
- P. R. China
| | - Xinhua Guo
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
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Chen Y, Gao D, Bai H, Liu H, Lin S, Jiang Y. Carbon Dots and 9AA as a Binary Matrix for the Detection of Small Molecules by Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2016; 27:1227-1235. [PMID: 27075876 DOI: 10.1007/s13361-016-1396-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/14/2016] [Accepted: 03/22/2016] [Indexed: 06/05/2023]
Abstract
Application of matrix-assisted laser-desorption/ionization mass spectrometry (MALDI MS) to analyze small molecules have some limitations, due to the inhomogeneous analyte/matrix co-crystallization and interference of matrix-related peaks in low m/z region. In this work, carbon dots (CDs) were for the first time applied as a binary matrix with 9-Aminoacridine (9AA) in MALDI MS for small molecules analysis. By 9AA/CDs assisted desorption/ionization (D/I) process, a wide range of small molecules, including nucleosides, amino acids, oligosaccharides, peptides, and anticancer drugs with a higher sensitivity were demonstrated in the positive ion mode. A detection limit down to 5 fmol was achieved for cytidine. 9AA/CDs matrix also exhibited excellent reproducibility compared with 9AA matrix. Moreover, by exploring the ionization mechanism of the matrix, the influence factors might be attributed to the four parts: (1) the strong UV absorption of 9AA/CDs due to their π-conjugated network; (2) the carboxyl groups modified on the CDs surface act as protonation sites for proton transfer in positive ion mode; (3) the thin layer crystal of 9AA/CDs could reach a high surface temperature more easily and lower transfer energy for LDI MS; (4) CDs could serve as a matrix additive to suppress 9AA ionization. Furthermore, this matrix was allowed for the analysis of glucose as well as nucleosides in human urine, and the level of cytidine was quantified with a linear range of 0.05-5 mM (R(2) > 0.99). Therefore, the 9AA/CDs matrix was proven to be an effective MALDI matrix for the analysis of small molecules with improved sensitivity and reproducibility. This work provides an alternative solution for small molecules detection that can be further used in complex samples analysis. Graphical Abstract ᅟ.
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Affiliation(s)
- Yongli Chen
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Graduate School at Shenzhen, Peking University, Shenzhen, 518055, China
| | - Dan Gao
- State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.
- Key Laboratory of Metabolomics at Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.
| | - Hangrui Bai
- State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China
- Key Laboratory of Metabolomics at Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China
| | - Hongxia Liu
- State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China
- Key Laboratory of Metabolomics at Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China
| | - Shuo Lin
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Graduate School at Shenzhen, Peking University, Shenzhen, 518055, China
| | - Yuyang Jiang
- National and Local United Engineering Laboratory for Personalized Antitumor Drugs, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China
- State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China
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Intact spore MALDI-TOF mass spectrometry and proteomic analysis of Puccinia pathogenic fungi. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1864:1093-1103. [PMID: 27267623 DOI: 10.1016/j.bbapap.2016.06.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 05/27/2016] [Accepted: 06/02/2016] [Indexed: 11/20/2022]
Abstract
The aim of this work was to develop a method for the identification of pathogens causing rust diseases of crops using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) of intact cells or spores (IC/IS). All optimizations were performed with Puccinia triticina, the causal agent of wheat leaf rust. Experiments included selection of washing solvents for spores, finding of an optimal concentration of spores in suspension and the most suitable matrix system as well as an evaluation of different sample preparation techniques. The best results were obtained when the spores were washed with acetonitrile/0.1% (v/v) trifluoroacetic acid, 7:3, v/v. A mixture of ferulic and sinapinic acids (5:15mgml(-1)) dissolved in acetonitrile/2.5% (v/v) trifluoroacetic acid, 7:3, v/v, was found optimal for the deposition of samples (50μg spores per μl) by two-layer volume technique. The optimized protocol was subsequently applied to other Puccinia species (Puccinia graminis, Puccinia striiformis and Puccinia coronata). Together with the use of the software BIOSPEAN, not only different species but also various pathotypes of the same species, which differ in their virulence, could be discriminated. There were 108 and 29 proteins identified from P. striiformis and P. graminis spores, respectively, after an acidic extraction in the matrix solvent mimicking the sample preparation for MALDI. Besides the presence of ribosomal proteins, histones, regulatory proteins and enzymes, also extracellular proteins participating in the pathogenesis were found. Finally, for both species, several proteins were assigned to signals in typical mass spectrometric profiles and suggested as diagnostic markers.
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Juang YM, Chien HJ, Chen CJ, Lai CC. Graphene flakes enhance the detection of TiO2-enriched catechins by SALDI-MS after microwave-assisted enrichment. Talanta 2016; 153:347-52. [DOI: 10.1016/j.talanta.2016.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 03/01/2016] [Accepted: 03/01/2016] [Indexed: 12/14/2022]
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Mukherjee G, Claudia Röwer C, Koy C, Protzel C, Lorenz P, Thiesen HJ, Hakenberg OW, Glocker MO. Ultraviolet matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for phosphopeptide analysis with a solidified ionic liquid matrix. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2015; 21:65-77. [PMID: 26181280 DOI: 10.1255/ejms.1362] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A solidified ionic liquid matrix (SILM) consisting of 3-aminoquinoline, α-cyano-4- hydroxycinnamic acid and ammonium dihydrogen phosphate combines the benefits of liquid and solid MALDI matrices and proves to be well suitable for phosphopeptide analysis using MALDI-MS in the low femtomole range. Desalting and buffer exchange that typically follow after phosphopeptide elution from metal oxide affinity chromatography (MOAC) materials can be omitted. Shifting the pH from acidic to basic during target preparation causes slow matrix crystallization and homogeneous embedding of the analyte molecules, forming a uniform preparation from which (phospho)peptides can be ionized in high yields over long periods of time. The novel combination of MOAC-based phosphopeptide enrichment with SILM preparation has been developed with commercially available standard phosphopeptides and with α-casein as phosphorylated standard protein. The applicability of the streamlined phosphopeptide analysis procedure to cell biological and clinical samples has been tested (i) using affinity-enriched endogenous TRIM28 from cell cultures and (ii) by analysis of a two-dimensional gel-separated protein spot from a bladder cancer sample.
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Affiliation(s)
| | | | - Cornelia Koy
- Proteome Center Rostock, University of Rostock, Germany..
| | - Chris Protzel
- Urology Clinic and Polyclinic, University Medicine Rostock, Germany..
| | - Peter Lorenz
- Institute of Immunology, University Medicine Rostock, Germany..
| | | | - Oliver W Hakenberg
- Urology Clinic and Polyclinic, University Medicine Rostock, Germany. - rostock.de
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Gode D, Schmitt C, Engel M, Volmer DA. Screening Dyrk1A inhibitors by MALDI-QqQ mass spectrometry: systematic comparison to established radiometric, luminescence, and LC-UV-MS assays. Anal Bioanal Chem 2014; 406:2841-52. [PMID: 24618988 DOI: 10.1007/s00216-014-7703-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 02/12/2014] [Accepted: 02/17/2014] [Indexed: 11/26/2022]
Abstract
Enzyme-catalyzed reactions play key roles in disease pathology, thus making them relevant subjects of therapeutic inhibitor screening experiments. Matrix-assisted laser desorption/ionization (MALDI) assays have been demonstrated to be able to replace established screening approaches. They offer increased sample throughput, but care must be taken to avoid instrumental bias from differences in ionization efficiencies. We compared a MALDI-triple-quadrupole (QqQ) method for the Dyrk1A peptide substrate woodtide to LC-MS, liquid chromatography with ultraviolet detection (LC-UV), luminescence, and radiometric assays. MALDI measurements were performed on a MALDI-QqQ instrument in the multiple-reaction monitoring mode. Different MALDI conditions were investigated to address whether matrix type, sample support, and MRM- or SIM-based detection conditions can be used to accommodate the molar responses of substrate peptide and its phosphorylated form. UV detection served as a reference method. The impact of MALDI matrix on IC50 values was small, even considering that matrix preparations were used that are known to alleviate response differences. IC50 values determined by MALDI were ca. 2-fold lower than those determined by LC-UV. Although MALDI generated lower ion yields for the phosphorylated peptide than for the peptide substrate, we found that a correction of compound potencies was readily possible using correction factors based on unbiased LC-UV results. A thorough method development delivered a robust assay with excellent performance (Z' > 0.91) that was close to that seen for LC-UV.
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Affiliation(s)
- David Gode
- Institute of Bioanalytical Chemistry, Saarland University, 66123, Saarbrücken, Germany
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Dudley E. MALDI Profiling and Applications in Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 806:33-58. [DOI: 10.1007/978-3-319-06068-2_2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Güzel Y, Rainer M, Mirza MR, Messner CB, Bonn GK. Highly selective recovery of phosphopeptides using trypsin-assisted digestion of precipitated lanthanide–phosphoprotein complexes. Analyst 2013; 138:2897-905. [DOI: 10.1039/c3an00066d] [Citation(s) in RCA: 17] [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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Fukuyama Y, Takeyama K, Kawabata SI, Iwamoto S, Tanaka K. An optimized matrix-assisted laser desorption/ionization sample preparation using a liquid matrix, 3-aminoquinoline/α-cyano-4-hydroxycinnamic acid, for phosphopeptides. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:2454-2460. [PMID: 22976212 DOI: 10.1002/rcm.6363] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
RATIONALE A liquid matrix, 3-aminoquinoline (3-AQ)/α-cyano-4-hydroxycinnamic acid (CHCA), introduced by Kolli et al. in 1996 for matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), has been reported for peptides and proteins, oligonucleotides, oligosaccharides, and glycopeptides. However, it has not been validated for phosphopeptides. METHODS We optimized sample preparation using 3-AQ/CHCA for phosphopeptides. The sensitivity of six phosphopeptide species as isolated or in digests was systematically evaluated by using MALDI-quadropole ion trap (QIT)-time of flight (TOF) MS in positive and negative ion modes, and compared with the conventional methods using a solid matrix, 2,5-dihydroxybenzoic acid (2,5-DHB). RESULTS The sensitivity of mono- and tetraphosphopeptides was improved 10- to 10 000-fold with the optimized preparation method using 3-AQ/CHCA compared with the conventional methods using 2,5-DHB. Improvement by 3-AQ/CHCA itself was 10-fold. Adding ammonium dihydrogen phosphate or an analyte solvent composition was also effectively improved the sensitivity. Phosphopeptides in isolated form or in digests were detected at femto- or subfemtomole levels. CONCLUSIONS Sensitivity of phosphopeptides was improved by the optimized sample preparation method using 3-AQ/CHCA compared with the conventional method using 2,5-DHB. The validation of 3-AQ/CHCA for phosphopeptides was systematically confirmed, expanding the potential of this matrix to phosphoproteomics.
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Affiliation(s)
- Yuko Fukuyama
- Koichi Tanaka Laboratory of Advanced Science and Technology, Shimadzu Corporation, 1 Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto, 604-8511, Japan.
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Dong M, Wu M, Wang F, Qin H, Han G, Dong J, Wu R, Ye M, Liu Z, Zou H. Coupling Strong Anion-Exchange Monolithic Capillary with MALDI-TOF MS for Sensitive Detection of Phosphopeptides in Protein Digest. Anal Chem 2010; 82:2907-15. [DOI: 10.1021/ac902907w] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Mingming Dong
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Minghuo Wu
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Fangjun Wang
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Hongqiang Qin
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Guanghui Han
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Jing Dong
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Ren’an Wu
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Mingliang Ye
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Zhen Liu
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Hanfa Zou
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China, and Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
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