1
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Li N, Zhang L, Shi H, Li J, Zhang J, Zhang Z, Dang F. C 18-functionalized magnetic nanocomposites fabricated by one-step aqueous coating of tailored oligopeptides for enrichment of low-abundance peptides. J Chromatogr A 2020; 1636:461730. [PMID: 33326925 DOI: 10.1016/j.chroma.2020.461730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/09/2020] [Accepted: 11/17/2020] [Indexed: 11/28/2022]
Abstract
Screening and monitoring endogenous peptides from complicated biosamples is still a major challenge in mass spectrometry-based proteomics research, mainly due to their low concentration and the interference of high-abundance proteins and other contaminants in biological samples. Herein, a facile and novel approach was described for rapid fabrication of C18-functionalized magnetic nanocomposites (C18-MNCs) based on one-step aqueous coating of C18-Val-Lys-Val-Lys-Val-Lys (C18-VK-VI) for the highly selective enrichment of low-abundance endogenous peptides from biological samples. C18-VK-VI can readily self-assemble into complete monolayers mainly composed of β-sheets with C18 hydrophobic chains erecting on the surface of GO@Fe3O4 MNCs under the physiological conditions. The resulting C18VK-VI-GO@Fe3O4 MNCs exhibited good performance for peptides enrichment from digests of standard protein (myoglobin, MYO) and human serum, such as high sensitivity (0.05 fmol μL-1) and selectivity (mass ratio of MYO digests and MYO = 1:500), rapid separation, and good reproducibility. Such a simple mild and rapid one-step aqueous coating method on the basis of oligopeptides self-assembly showed great potential in surface functionalization of various nanoadsorbents for proteome/peptidome researches.
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Affiliation(s)
- Nan Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 West Chang'an Street, Xi'an 710119, China
| | - Li Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 West Chang'an Street, Xi'an 710119, China
| | - Hailan Shi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 West Chang'an Street, Xi'an 710119, China
| | - Jianru Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 West Chang'an Street, Xi'an 710119, China
| | - Jing Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 West Chang'an Street, Xi'an 710119, China
| | - Zhiqi Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 West Chang'an Street, Xi'an 710119, China
| | - Fuquan Dang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 West Chang'an Street, Xi'an 710119, China.
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2
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Li N, Dou S, Feng L, Zhu Q, Lu N. Eliminating sweet spot in MALDI-MS with hydrophobic ordered structure as target for quantifying biomolecules. Talanta 2020; 218:121172. [PMID: 32797923 DOI: 10.1016/j.talanta.2020.121172] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 05/14/2020] [Accepted: 05/18/2020] [Indexed: 12/13/2022]
Abstract
In matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), the analyte is usually distributed unevenly throughout the sample spot. The area with aggregated analyte molecules contributing abundant signal, is termed as "sweet spot", which results in poor detection reproducibility and makes it impossible to quantify analytes without internal standards. We proposed a strategy to eliminate sweet spot in MALDI-MS by using a hydrophobic ordered structure as target. The target is fabricated by creating a hydrophobic silicon nanopillar array and subsequently decorating it uniformly with poly(methyl methacrylate) nanodots for capturing analytes. The sweet spot is eliminated by distributing analyte molecules uniformly on this target, and then result in a uniform MS image, which demonstrates an ideal reproducibility. Finally, with the target assisted MALDI-MS as biosensor was suitable to analyze practical sample such as bacitracin A in milk. Horse heart myoglobin and, angiotensin III molecules can be quantified without internal standard using α-cyano-4-hydroxycinnamic acid as matrix. This biosensor presented good linearity, high salts tolerance and high signal-to-noise ratio (up to 271.8), even the 1 mol/L salt concentration. This strategy could provide an alternative for improving the performance of MALDI-MS.
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Affiliation(s)
- Ning Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Shuzhen Dou
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Lei Feng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Qunyan Zhu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Nan Lu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China.
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3
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Zhang C, Tao T, Yuan W, Zhang L, Zhang X, Yao J, Zhang Y, Lu H. Fluorous Solid-Phase Extraction Technique Based on Nanographite Fluoride. Anal Chem 2017; 89:4566-4572. [DOI: 10.1021/acs.analchem.6b05071] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Cheng Zhang
- Shanghai
Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China
- Department
of Chemistry, Fudan University, Shanghai, 200433, P. R. China
| | - Tao Tao
- Shanghai
Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China
- Department
of Chemistry, Fudan University, Shanghai, 200433, P. R. China
| | - Wenjuan Yuan
- Shanghai
Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China
- Department
of Chemistry, Fudan University, Shanghai, 200433, P. R. China
| | - Lei Zhang
- Shanghai
Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China
| | - Xiaoqin Zhang
- Shanghai
Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China
- Department
of Chemistry, Fudan University, Shanghai, 200433, P. R. China
| | - Jun Yao
- Shanghai
Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China
| | - Ying Zhang
- Shanghai
Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China
| | - Haojie Lu
- Shanghai
Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China
- Department
of Chemistry, Fudan University, Shanghai, 200433, P. R. China
- Key
Laboratory of Glycoconjugates Research Ministry of Public Health, Fudan University, Shanghai, 200032, P. R. China
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4
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Lin G, Gao C, Zheng Q, Lei Z, Geng H, Lin Z, Yang H, Cai Z. Room-temperature synthesis of core–shell structured magnetic covalent organic frameworks for efficient enrichment of peptides and simultaneous exclusion of proteins. Chem Commun (Camb) 2017; 53:3649-3652. [DOI: 10.1039/c7cc00482f] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Core–shell structured Fe3O4@COFs were synthesized and used as a new absorbent for efficient enrichment of peptides and simultaneous exclusion of proteins.
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Affiliation(s)
- Guo Lin
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Chaohong Gao
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Qiong Zheng
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zhixian Lei
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Huijuan Geng
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zian Lin
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Huanghao Yang
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zongwei Cai
- Partner State Key Laboratory of Environmental and Biological Analysis
- Department of Chemistry
- Hong Kong Baptist University
- Hong Kong SAR
- P. R. China
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5
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Wang S, Xiao Z, Xiao C, Wang H, Wang B, Li Y, Chen X, Guo X. (E)-Propyl α-Cyano-4-Hydroxyl Cinnamylate: A High Sensitive and Salt Tolerant Matrix for Intact Protein Profiling by MALDI Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2016; 27:709-718. [PMID: 26729454 DOI: 10.1007/s13361-015-1325-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 12/02/2015] [Accepted: 12/05/2015] [Indexed: 06/05/2023]
Abstract
Low-abundance samples and salt interference are always of great challenges for the practical protein profiling by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). Herein, a series of carboxyl-esterified derivatives of α-cyano-4-hydroxycinnamic acid (CHCA) were synthesized and evaluated as matrices for MALDI-MS analysis of protein. Among them, (E)-propyl α-cyano-4-hydroxyl cinnamylate (CHCA-C3) was found to exhibit excellent assay performance for intact proteins by improving the detection sensitivity 10 folds compared with the traditional matrices [i.e., super2,5-dihydroxybenzoic acid (superDHB), sinapic acid (SA), and CHCA]. In addition, CHCA-C3 was shown to have high tolerance to salts, the ion signal of myoglobin was readily detected even in the presence of urea (8 M), NH4HCO3 (2 M), and KH2PO4 (500 mM), meanwhile sample washability was robust. These achievements were mainly attributed to improved ablation ability and increased hydrophobicity or affinity of CHCA-C3 to proteins in comparison with hydrophilic matrixes, leading to more efficient ionization of analyte. Furthermore, direct analysis of proteins from crude egg white demonstrated that CHCA-C3 was a highly efficient matrix for the analysis of low-abundance proteins in complex biological samples. These outstanding performances indicate the tremendous potential use of CHCA-C3 in protein profiling by MALDI-MS. Graphical Abstract ᅟ.
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Affiliation(s)
- Sheng Wang
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Zhaohui Xiao
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
| | - Huixin Wang
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Bing Wang
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Ying Li
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Xinhua Guo
- College of Chemistry, Jilin University, Changchun, 130012, China.
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6
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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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7
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Shi C, Lin Q, Deng C. Preparation of on-plate immobilized metal ion affinity chromatography platform via dopamine chemistry for highly selective isolation of phosphopeptides with matrix assisted laser desorption/ionization mass spectrometry analysis. Talanta 2015; 135:81-6. [DOI: 10.1016/j.talanta.2014.12.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 12/22/2014] [Accepted: 12/25/2014] [Indexed: 11/25/2022]
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8
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Li H, Wang Y, Zhang L, Lu H, Zhou Z, Wei L, Yang P. Facile synthesis of novel magnetic silica nanoparticles functionalized with layer-by-layer detonation nanodiamonds for secretome study. Analyst 2015; 140:7886-95. [DOI: 10.1039/c5an01432h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A novel approach for fast and efficient specific enrichment of low abundance peptides and proteins in secretome analysis was developed by using novel magnetic silica nanoparticles functionalized with layer-by-layer detonation nanodiamonds (dNDs).
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Affiliation(s)
- Hong Li
- Department of Chemistry & Institutes of Biomedical Sciences
- Fudan University
- Shanghai
- China
| | - Yi Wang
- Department of Chemistry & Institutes of Biomedical Sciences
- Fudan University
- Shanghai
- China
| | - Lei Zhang
- Department of Chemistry & Institutes of Biomedical Sciences
- Fudan University
- Shanghai
- China
| | - Haojie Lu
- Department of Chemistry & Institutes of Biomedical Sciences
- Fudan University
- Shanghai
- China
| | - Zhongjun Zhou
- Department of Biochemistry
- University of Hong Kong
- China
| | - Liming Wei
- Department of Chemistry & Institutes of Biomedical Sciences
- Fudan University
- Shanghai
- China
| | - Pengyuan Yang
- Department of Chemistry & Institutes of Biomedical Sciences
- Fudan University
- Shanghai
- China
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9
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Zhao M, Xie Y, Deng C, Zhang X. Recent advances in the application of core–shell structured magnetic materials for the separation and enrichment of proteins and peptides. J Chromatogr A 2014; 1357:182-93. [DOI: 10.1016/j.chroma.2014.04.078] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 04/20/2014] [Accepted: 04/22/2014] [Indexed: 12/28/2022]
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10
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Qian K, Zhou L, Zhang J, Lei C, Yu C. A combo-pore approach for the programmable extraction of peptides/proteins. NANOSCALE 2014; 6:5121-5. [PMID: 24695592 DOI: 10.1039/c4nr00633j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel combo-pore approach has been designed for the programmable purification, minimisation of sample complexity, enrichment and sensitive detection of peptides in biosamples. This approach has a superior performance to conventional protocols and commercial products.
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Affiliation(s)
- Kun Qian
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, QLD 4072, Australia.
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11
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Gao M, Deng C, Zhang X. Magnetic nanoparticles-based digestion and enrichment methods in proteomics analysis. Expert Rev Proteomics 2014; 8:379-90. [DOI: 10.1586/epr.11.25] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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12
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Novel nanomaterials used for sample preparation for protein analysis. Anal Bioanal Chem 2013; 406:35-47. [DOI: 10.1007/s00216-013-7392-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 09/09/2013] [Accepted: 09/20/2013] [Indexed: 11/26/2022]
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13
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Li XS, Zhu GT, Luo YB, Yuan BF, Feng YQ. Synthesis and applications of functionalized magnetic materials in sample preparation. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2012.10.015] [Citation(s) in RCA: 173] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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14
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Ma YR, Zhang XL, Zeng T, Cao D, Zhou Z, Li WH, Niu H, Cai YQ. Polydopamine-coated magnetic nanoparticles for enrichment and direct detection of small molecule pollutants coupled with MALDI-TOF-MS. ACS APPLIED MATERIALS & INTERFACES 2013; 5:1024-1030. [PMID: 23301525 DOI: 10.1021/am3027025] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Polydopamine-coated Fe(3)O(4) nanoparticles (Fe(3)O(4)@PDA NPs) were synthesized and applied as matrix for the detection of pollutants by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The synthesis of Fe(3)O(4)@PDA NPs was accomplished in 30 min by in situ polymerization of dopamine without any toxic reagent. Using Fe(3)O(4)@PDA NPs as matrix of MALDI-TOF, eleven small molecule pollutants (molecular weight from 251.6 to 499.3), including Benzo(a)pyrene (BaP), three perfluorinated compounds (PFCs), and seven antibiotics, were successfully detected in either positive or negative reflection mode without background interference. Furthermore, the Fe(3)O(4)@PDA NPs can also enrich trace amounts of hydrophobic target, such as BaP, from solution to nanoparticles surface. Then the Fe(3)O(4)@PDA-BaP can be isolated through magnetic sedimentation step and directly spotted on the stainless steel plate for MALDI measurement. With Fe(3)O(4)@PDA NPs as adsorbent and matrix, we also realized the analysis of BaP in tap water and lake water samples. Thus, a magnetic solid-phase extraction (MSPE)-MALDI-TOF-MS method was established for the measurement of BaP.
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Affiliation(s)
- Yu-rong Ma
- The State Key Laboratory of Environmental Chemistry and Ecotoxicology of the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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15
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Jia L, Lu Y, Shao J, Liang XJ, Xu Y. Nanoproteomics: a new sprout from emerging links between nanotechnology and proteomics. Trends Biotechnol 2013; 31:99-107. [DOI: 10.1016/j.tibtech.2012.11.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 11/29/2012] [Accepted: 11/29/2012] [Indexed: 10/27/2022]
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16
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Qian K, Liu F, Yang J, Huang X, Gu W, Jambhrunkar S, Yuan P, Yu C. Pore size-optimized periodic mesoporous organosilicas for the enrichment of peptides and polymers. RSC Adv 2013. [DOI: 10.1039/c3ra41332b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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17
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Zhang H, Liu QS, Yang CL, Lv JZ, Xie LQ, Tang MJ, Yue ZF, Wan ZG. C18/C8-Functionalized Magnetic Silica Nanospheres (Fe3O4@Si-C8/C18) as Capture Probes for Highly Efficient and Rapid Purification of Veterinary Drug Residues. FOOD ANAL METHOD 2012. [DOI: 10.1007/s12161-012-9504-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Zeng Z, Wang Y, Shi S, Wang L, Guo X, Lu N. On-plate selective enrichment and self-desalting of peptides/proteins for direct MALDI MS analysis. Anal Chem 2012; 84:2118-23. [PMID: 22324309 DOI: 10.1021/ac203378q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In this paper, a new technique has been proposed to achieve simultaneous peptides/proteins enrichment and wash-free self-desalting on a novel sample support with a circle hydrophobic-hydrophilic-hydrophobic pattern. Upon deposition, the sample solution is first concentrated in a small area by repulsion of the hydrophobic outer layer, and then, the peptides/proteins and coexisting salt contaminants are selectively captured in different regions of the pattern through strong hydrophobic and hydrophilic attractions, respectively. As a result, the detection sensitivity is improved by 2 orders of magnitude better than the use of the traditional MALDI plate, and high-quality mass spectra are obtained even in the presence of NaCl (1 M), NH(4)HCO(3) (100 mM), or urea (1 M). The practical application of this method is further demonstrated by the successful analysis of myoglobin digests with high sequence coverage, demonstrating the great potential in proteomic research.
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Affiliation(s)
- Zhoufang Zeng
- College of Chemistry, Jilin University, Changchun 130012, China
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19
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Qian K, Gu W, Yuan P, Liu F, Wang Y, Monteiro M, Yu C. Enrichment and detection of peptides from biological systems using designed periodic mesoporous organosilica microspheres. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:231-236. [PMID: 22135224 DOI: 10.1002/smll.201101770] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 09/26/2011] [Indexed: 05/31/2023]
Abstract
Periodic mesoporous organosilica microspheres (PMOMs) are designed with integrated structural features, including a cubic mesostructure, hydrophobic wall composition, a uniform pore size of ≈3 nm, and a spherical morphology in micrometers, all advantageous for size-selective and highly efficient enrichment of peptides from mixtures. Consequently, PMOMs can be used to capture peptides in a range of complex biological systems.
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Affiliation(s)
- Kun Qian
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia Fax: (+)61-7-33463973
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20
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Liu Q, Shi J, Cheng M, Li G, Cao D, Jiang G. Preparation of graphene-encapsulated magnetic microspheres for protein/peptide enrichment and MALDI-TOF MS analysis. Chem Commun (Camb) 2012; 48:1874-6. [DOI: 10.1039/c2cc16891j] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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21
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Zhu GT, Li XS, Gao Q, Zhao NW, Yuan BF, Feng YQ. Pseudomorphic synthesis of monodisperse magnetic mesoporous silica microspheres for selective enrichment of endogenous peptides. J Chromatogr A 2011; 1224:11-8. [PMID: 22218330 DOI: 10.1016/j.chroma.2011.12.045] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2011] [Revised: 12/06/2011] [Accepted: 12/13/2011] [Indexed: 01/16/2023]
Abstract
In this work, we describe a novel synthetic strategy of magnetic mesoporous silica spheres (Fe3O4@mSiO2) for the selective enrichment of endogenous peptides. Fe3O4 particles were coated with silica shell by a sol-gel method, followed by pseudomorphic synthesis to transform nonporous silica shell into ordered mesoporous silica shell. The core/shell structure and mesostructure were individually fabricated in two steps, which can be expedient to independently optimize the properties of monodispersion, magnetization and mesostructure. Actually, it was confirmed that the produced Fe3O4@mSiO2 particles possess good monodispersion, high magnetization, superparamagnetism, uniform accessible mesopores, and large surface area and pore volume. With these good properties, Fe3O4@mSiO2 spheres were applied to the rapid enrichment of peptides. Based on the size-exclusion mechanism and hydrophobic interaction with siloxane bridge group mainly on the surface of inside pores, Fe3O4@mSiO2 can selectively capture peptides and exclude high-MW proteins and salts. Furthermore, peptides in human plasma were successfully enriched by Fe3O4@mSiO2.
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Affiliation(s)
- Gang-Tian Zhu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
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22
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Sun L, Zhao Q, Zhu G, Zhou Y, Wang T, Shan Y, Yang K, Liang Z, Zhang L, Zhang Y. Octyl-functionalized hybrid magnetic mesoporous microspheres for enrichment of low-concentration peptides prior to direct analysis by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:1257-1265. [PMID: 21488124 DOI: 10.1002/rcm.4986] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Octyl-functionalized hybrid magnetic mesoporous (Fe(3)O(4)·nSiO(2)·meso-hybrid-C8) microspheres were synthesized and applied in the isolation and pre-concentration of low-concentration peptides prior to direct analysis by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Such microspheres possess high surface area (324 m(2)/g), hydrophobic group (C8), relatively large pore volume (0.304 cm(3)/g), uniform pore diameter (~3.7 nm), and magnetic responsivity, which make them a simple and efficient kind of adsorbent for the enrichment of low-concentration peptides. For bovine serum albumin (BSA, 15 fmol μL(-1)) digest, after concentration by Fe(3)O(4)·nSiO(2)·meso-hybrid-C8 microspheres, the enrichment performance was evidently better than those obtained by solvent evaporation and C8-functionalized magnetic particles, and comparable to those obtained by commercial Anchor chip target and ZipTipC18 pipette tip. Such microspheres were further applied in the enrichment of the tryptic digests of rat cerebellum proteins and endogenous peptides of crude human serum, and more peaks with higher signal-to-noise (S/N) ratio were obtained than before pre-concentration. Furthermore, the pre-concentration reproducibility of magnetic microspheres for biological samples was good, and the limit of detection (LOD) for BSA digests by MALDI-TOF MS was decreased by at least one order of magnitude compared with that obtained without pre-concentration. All the above-mentioned results indicate that the synthesized Fe(3)O(4)·nSiO(2)·meso-hybrid-C8 microspheres are promising for the enrichment of low-concentration peptides from complex biosamples.
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Affiliation(s)
- Liangliang Sun
- National Chromatographic R & A Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, China
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23
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Gu ZY, Chen YJ, Jiang JQ, Yan XP. Metal-organic frameworks for efficient enrichment of peptides with simultaneous exclusion of proteins from complex biological samples. Chem Commun (Camb) 2011; 47:4787-9. [PMID: 21399815 DOI: 10.1039/c1cc10579e] [Citation(s) in RCA: 187] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Metal-organic frameworks MIL-53, MIL-100 and MIL-101 demonstrate efficient enrichment of peptides with simultaneous exclusion of proteins from complex biological samples.
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Affiliation(s)
- Zhi-Yuan Gu
- Research Center for Analytical Sciences and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China
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24
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Selective extraction of low molecular weight proteins by mesoporous silica particles with modified internal and external surfaces. Anal Bioanal Chem 2010; 398:1715-22. [DOI: 10.1007/s00216-010-4081-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Revised: 07/30/2010] [Accepted: 08/02/2010] [Indexed: 10/19/2022]
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25
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Zhang L, Lu H, Yang P. Recent developments of nanoparticle-based enrichment methods for mass spectrometric analysis in proteomics. Sci China Chem 2010. [DOI: 10.1007/s11426-010-0112-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Wan J, Qian K, Zhang J, Liu F, Wang Y, Yang P, Liu B, Yu C. Functionalized periodic mesoporous organosilicas for enhanced and selective peptide enrichment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:7444-7450. [PMID: 20095532 DOI: 10.1021/la9041698] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The analysis of peptides by the mass spectrometry (MS) technique is important in modern life science. The enrichment of peptides can increase the detection efficiency and is sometimes indispensable for collecting the information on proteins with low-abundance. Herein, we first report that functionalized periodic mesoporous organosilica (PMO) materials have a superior peptide enrichment property. It is demonstrated that the PMO materials with an organo-bridged (-CH(2)-) hybrid wall composition display a highly enhanced peptide enrichment ability compared to the pure silica material (SBA-15) with similar mesostructured parameters and morphology. More importantly, by surface modification of PMO with amino groups (denoted NH(2)-PMO), PMO and NH(2)-PMO with opposite charged surfaces (-25.2 and +39.0 mV, respectively) show selective affinities for positively and negatively charged peptides, respectively. By directly adding PMO, NH(2)-PMO as well as pure silica materials to the peptides solution with a low concentration (1-2 fmol/microL), 36 and 28 peptides can be detected from the BSA digestion in the presence of PMO and NH(2)-PMO, respectively, while only 6 and 4 are monitored in the case of SBA-15 enrichment and from solution without enrichment, respectively. Moreover, 69.4% (25 of 36) of enriched peptides by PMO have pI > or = 6 and 80% (21 of 28) of enriched peptides by NH(2)-PMO possess pI < or = 6. Combining the results from the NH(2)-PMO and PMO enrichment together, 51 peptides can be identified with a MOWSE score of 333. It is also noted that similar conclusions can also be obtained from the peptides solution originated from other proteins. This might be an important contribution to the understanding of the interaction between peptides and porous hosts, and the proposed method is promising for the development of both material science and biotechnology.
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Affiliation(s)
- Jingjing Wan
- Department of Chemistry, Institute of Biomedical Sciences and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, PR China
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27
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Chen H, Deng C, Zhang X. Synthesis of Fe(3)O(4)@SiO(2)@PMMA core-shell-shell magnetic microspheres for highly efficient enrichment of peptides and proteins for MALDI-ToF MS analysis. Angew Chem Int Ed Engl 2010; 49:607-11. [PMID: 20013830 DOI: 10.1002/anie.200904885] [Citation(s) in RCA: 322] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Hemei Chen
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai 200433, China
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28
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Zhang L, Xu Y, Yao H, Xie L, Yao J, Lu H, Yang P. Boronic acid functionalized core-satellite composite nanoparticles for advanced enrichment of glycopeptides and glycoproteins. Chemistry 2010; 15:10158-66. [PMID: 19658139 DOI: 10.1002/chem.200901347] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A core-satellite-structured composite material has been successfully synthesized for capturing glycosylated peptides or proteins. This novel hybrid material is composed of a silica-coated ferrite "core" and numerous "satellites" of gold nanoparticles with lots of "anchors". The anchor, 3-aminophenylboronic acid, designed for capturing target molecules, is highly specific toward glycosylated species. The long organic chains bridging the gold surface and the anchors could reduce the steric hindrance among the bound molecules and suppress nonspecific bindings. Due to the excellent structure of the current material, the trap-and-release enrichment of glycosylated samples is quite simple, specific, and effective. Indeed, the composite nanoparticles could be used for enriching glycosylated peptides and proteins with very low concentrations, and the enriched samples can be easily separated from bulk solution by a magnet. By using this strategy, the recovery of glycopeptides and glycoproteins after enrichment were found to be 85.9 and 71.6% separately, whereas the adsorption capacity of the composite nanoparticles was proven to be more than 79 mg of glycoproteins per gram of the material. Moreover, the new composite nanoparticles were applied to enrich glycosylated proteins from human colorectal cancer tissues for identification of N-glycosylation sites. In all, 194 unique glycosylation sites mapped to 155 different glycoproteins have been identified, of which 165 sites (85.1%) were newly identified.
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Affiliation(s)
- Lijuan Zhang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai 200433, China
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29
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Gao X, Zhang X, Zheng J, He F. Proteomics in China: Ready for prime time. SCIENCE CHINA-LIFE SCIENCES 2010; 53:22-33. [DOI: 10.1007/s11427-010-0027-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2009] [Accepted: 12/28/2009] [Indexed: 12/27/2022]
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30
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Chen H, Deng C, Zhang X. Synthesis of Fe3O4@SiO2@PMMA CoreâShellâShell Magnetic Microspheres for Highly Efficient Enrichment of Peptides and Proteins for MALDI-ToF MS Analysis. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200904885] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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31
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Wei LM, Shen Q, Lu HJ, Yang PY. Pretreatment of low-abundance peptides on detonation nanodiamond for direct analysis by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:3631-7. [DOI: 10.1016/j.jchromb.2009.09.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Revised: 08/31/2009] [Accepted: 09/02/2009] [Indexed: 10/20/2022]
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32
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Yan F, Wu J, Tan F, Yan Y, Ju H. A rapid and simple method for ultrasensitive electrochemical immunoassay of protein by an electric field-driven strategy. Anal Chim Acta 2009; 644:36-41. [DOI: 10.1016/j.aca.2009.04.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Revised: 04/08/2009] [Accepted: 04/10/2009] [Indexed: 11/16/2022]
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33
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Chen H, Qi D, Deng C, Yang P, Zhang X. Preparation of C60-functionalized magnetic silica microspheres for the enrichment of low-concentration peptides and proteins for MALDI-TOF MS analysis. Proteomics 2009; 9:380-7. [DOI: 10.1002/pmic.200800335] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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WEI Y, MEI Y, XU Z, WANG C, GUO Y, DU Y, ZHANG W. A Novel MALDI Matrix for Analyzing Peptides and Proteins: Paraffin Wax Immobilized Matrix. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Ye N. Protein Profiles of Human Serum by SELDI-TOF-MS with Multiwalled Carbon Nanotubes as Absorbent. ANAL LETT 2008. [DOI: 10.1080/00032710802363131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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36
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Shen W, Xiong H, Xu Y, Cai S, Lu H, Yang P. ZnO−Poly(methyl methacrylate) Nanobeads for Enriching and Desalting Low-Abundant Proteins Followed by Directly MALDI-TOF MS Analysis. Anal Chem 2008; 80:6758-63. [PMID: 18681459 DOI: 10.1021/ac801001b] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wenwen Shen
- Department of Chemistry, Fudan University, Shanghai 200433, China, and Institutes of Biomedical Sciences and Affiliated Tumor Hospital, Fudan University, Shanghai 200032, China
| | - Huanming Xiong
- Department of Chemistry, Fudan University, Shanghai 200433, China, and Institutes of Biomedical Sciences and Affiliated Tumor Hospital, Fudan University, Shanghai 200032, China
| | - Ye Xu
- Department of Chemistry, Fudan University, Shanghai 200433, China, and Institutes of Biomedical Sciences and Affiliated Tumor Hospital, Fudan University, Shanghai 200032, China
| | - Sanjun Cai
- Department of Chemistry, Fudan University, Shanghai 200433, China, and Institutes of Biomedical Sciences and Affiliated Tumor Hospital, Fudan University, Shanghai 200032, China
| | - Haojie Lu
- Department of Chemistry, Fudan University, Shanghai 200433, China, and Institutes of Biomedical Sciences and Affiliated Tumor Hospital, Fudan University, Shanghai 200032, China
| | - Pengyuan Yang
- Department of Chemistry, Fudan University, Shanghai 200433, China, and Institutes of Biomedical Sciences and Affiliated Tumor Hospital, Fudan University, Shanghai 200032, China
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37
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Dietzel PDC, Blom R, Fjellvåg H. Base-Induced Formation of Two Magnesium Metal-Organic Framework Compounds with a Bifunctional Tetratopic Ligand. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200701284] [Citation(s) in RCA: 277] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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38
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39
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Xiong HM, Guan XY, Jin LH, Shen WW, Lu HJ, Xia YY. Surfactant-Free Synthesis of SnO2@PMMA and TiO2@PMMA Core–Shell Nanobeads Designed for Peptide/Protein Enrichment and MALDI-TOF MS Analysis. Angew Chem Int Ed Engl 2008; 47:4204-7. [DOI: 10.1002/anie.200705942] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Xiong HM, Guan XY, Jin LH, Shen WW, Lu HJ, Xia YY. Surfactant-Free Synthesis of SnO2@PMMA and TiO2@PMMA Core–Shell Nanobeads Designed for Peptide/Protein Enrichment and MALDI-TOF MS Analysis. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705942] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Yeo WS, Lee SJ, Lee JR, Kim KP. Nitrosative protein tyrosine modifications: biochemistry and functional significance. BMB Rep 2008; 41:194-203. [DOI: 10.5483/bmbrep.2008.41.3.194] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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42
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Jiang X, Ye M, Zou H. Technologies and methods for sample pretreatment in efficient proteome and peptidome analysis. Proteomics 2008; 8:686-705. [DOI: 10.1002/pmic.200700617] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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43
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Jia W, Wu H, Lu H, Li N, Zhang Y, Cai R, Yang P. Rapid and automatic on-plate desalting protocol for MALDI-MS: using imprinted hydrophobic polymer template. Proteomics 2007; 7:2497-506. [PMID: 17610205 DOI: 10.1002/pmic.200601029] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A novel protocol of rapid and automatic on-plate desalting (OPD) and peptide concentration for 2-DE-MALDI-MS has been developed by the approach of templating the hydrophobic polymer solution over Kapton-etched mask. For the template technique, small hydrophobic polymer [linear poly(methyl methacrylate) (PMMA), PMMA derivatized with fullerene-C60 (PMMA-C60), linear polystyrene (PSt), or PSt derivatized with fullerene-C60 (PSt-C60)] spots (990 microm od) are patterned at the centers of stainless MALDI plate wells (1400 microm id). Tryptic-peptide solution with no predesalting was dropped onto the central hydrophobic spots, resulting in a concentration of proteolytic peptides on the hydrophobic polymer surface with a reduced spot size. The dried peptide layer was then covered subsequently with over-volume matrix solution, causing the removal of redissolved salts from the spot center to the spot edge by means of a natural "outward flow." The proposed OPD protocol exhibited a dramatic enhancement in S/N up to 850 for 14 fmol BSA digests in the coexistence of 100 mM salts, compared with barely detectable peaks in ordinary way. This analysis has shown that the success rate of identification was increased by two-fold for low abundance proteins in the human liver tissue with no need for the conventional ZipPlate desalting strategy.
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Affiliation(s)
- Weitao Jia
- Department of Chemistry, Fudan University, Shanghai, Peoples Republic of China
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44
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Li Y, Yan B, Deng C, Tang J, Liu J, Zhang X. On-plate digestion of proteins using novel trypsin-immobilized magnetic nanospheres for MALDI-TOF-MS analysis. Proteomics 2007; 7:3661-71. [PMID: 17853514 DOI: 10.1002/pmic.200700464] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In this study, a novel method of on-plate digestion using trypsin-immobilized magnetic nanospheres was developed followed by MALDI-TOF-MS for rapid and effective analysis and identification of proteins. We utilized a facile one-pot method for the direct preparation of amine-functionalized magnetic nanospheres with highly magnetic properties and the amino groups on the outer surface. Through the reaction of the aldehyde groups with amine groups, trypsin was simply and stably immobilized onto the magnetic nanospheres. The obtained trypsin-linked magnetic nanospheres were then applied for on-plate digestion of sample proteins (myoglobin and Cytochrome c). Moreover, after digestion, the trypsin-linked nanospheres could be easily removed from the plate due to their magnetic property, which would avoid causing contamination on the ion source chamber in MS. The effects of the temperature and incubation time on the digestion efficiency were characterized. Within only 5 min, proteins could be efficiently digested with the peptide sequence coverage higher than or equal to that of the traditional in-solution digestion for 12 h. Furthermore, RPLC fractions of rat liver extract were also successfully processed using this novel method. These results suggested that our improved on-plate digestion protocol for MALDI-MS may find further application in automated analysis of large sets of proteins.
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Affiliation(s)
- Yan Li
- Department of Chemistry, Institute of Biomedical Sciences, Fudan University, Shanghai, China
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45
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Zhang Y, Fang J, Kuang Y, Guo X, Lu H, Yang P. Wash-free in-situ self-desalting and peptide enrichment by block copolymer analyzed with MALDI-TOFMS. Chem Commun (Camb) 2007:4468-70. [PMID: 17971958 DOI: 10.1039/b710741b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel technique of simultaneous peptide enrichment and wash-free in-situ self-desalting for MALDI analysis is reported, where a newly synthesized block copolymer with a microphase-separated configuration is applied to embed salts with its hydrophilic domain of poly(ethylene oxide) and concentrate peptides with its hydrophobic domain of polysulfone.
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Affiliation(s)
- Ying Zhang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai 200433, PR China
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46
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Liu Y, Qu H, Xue Y, Wu Z, Yang P, Liu B. Enhancement of proteolysis through the silica-gel-derived microfluidic reactor. Proteomics 2007; 7:1373-8. [PMID: 17407177 DOI: 10.1002/pmic.200600896] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
An on-chip enzymatic reactor providing rapid protein digestion is presented. Trypsin-embedding stationary phase within the microchannel has been prepared by the sol-gel method. Such a microfluidic reactor has been used for low-level protein digestion at 16 fmol per analysis. The analytical potential of the microreactor combined with the strong cation exchange and RPLC ESI-MS/MS for the identification of real samples from the cytoplasma of the human liver tissue has been demonstrated.
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Affiliation(s)
- Yun Liu
- Department of Chemistry and Institute of Biomedical Sciences, Fudan University, Shanghai, PR China
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47
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Current literature in mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2007; 42:266-277. [PMID: 17262881 DOI: 10.1002/jms.1071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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48
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Xiong HM, Xie DP, Guan XY, Tan YJ, Xia YY. Water-stable blue-emitting ZnO@polymer core–shell microspheres. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b700176b] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Myasein KT, Pulido JS, Hatfield RM, McCannel CA, Dundervill RF, Shippy SA. Sub-microlitre dialysis system to enable trace level peptide detection from volume-limited biological samples using MALDI-TOF-MS. Analyst 2007; 132:1046-52. [PMID: 17893809 DOI: 10.1039/b707783a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The detection of peptides with mass spectrometry from volume-limited biological samples is a challenging task due to low sample volume, a broad range of peptide concentrations down to trace levels, endogenous high proteins and salt levels. Previously, a microspotting method was presented for trace-level peptide detection with MALDI-MS from sub-microlitre samples with biological salt levels. However, in the presence of proteins, peptide signals are significantly reduced. This paper presents a novel dialysis device for removal of proteins from sub-microlitre samples using a semipermeable hollow fiber membrane to enhance peptide detection. A dialysis device was constructed to perform sub-microlitre dialysis to remove proteins from complex samples. Angiotensin I was used as a model peptide in the presence of 350 mg L(-1) BSA prepared in physiological saline to mimic biological samples. In the absence of BSA, clear angiotensin I peaks were seen at 250 pM, yet in the presence of the BSA, 10 nM angiotensin I was barely detected. After dialysis, peak detection was improved to a 500 pM level. Protein removal and peptide recovery (approximately 66%) were determined using CE-LIF. Clinical vitreous samples as low as 200 nL were successfully dialyzed in 30 min and a 3-fold increase in peptide peaks were detected with greatly improved signals. This method is simple and can be a useful technique for trace level peptide detection from volume-limited biological samples.
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Affiliation(s)
- Kyaw ThetMaw Myasein
- Department of Chemistry (M/C 111), University of Illinois at Chicago (UIC), 845 W Taylor ST, Chicago, Illinois 60607, USA
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