1
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Nagy C, Huszank R, Gaspar A. Study of the geometry of open channels in a layer-bed-type microfluidic immobilized enzyme reactor. Anal Bioanal Chem 2021; 413:6321-6332. [PMID: 34378068 PMCID: PMC8487885 DOI: 10.1007/s00216-021-03588-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 01/01/2023]
Abstract
This paper aims at studying open channel geometries in a layer-bed-type immobilized enzyme reactor with computer-aided simulations. The main properties of these reactors are their simple channel pattern, simple immobilization procedure, regenerability, and disposability; all these features make these devices one of the simplest yet efficient enzymatic microreactors. The high surface-to-volume ratio of the reactor was achieved using narrow (25–75 μm wide) channels. The simulation demonstrated that curves support the mixing of solutions in the channel even in strong laminar flow conditions; thus, it is worth including several curves in the channel system. In the three different designs of microreactor proposed, the lengths of the channels were identical, but in two reactors, the liquid flow was split to 8 or 32 parallel streams at the inlet of the reactor. Despite their overall higher volumetric flow rate, the split-flow structures are advantageous due to the increased contact time. Saliva samples were used to test the efficiencies of the digestions in the microreactors.
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Affiliation(s)
- Cynthia Nagy
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem ter 1, Debrecen, 4032, Hungary
| | - Robert Huszank
- Institute for Nuclear Research (Atomki), P.O. Box 51, Debrecen, 4001, Hungary
| | - Attila Gaspar
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem ter 1, Debrecen, 4032, Hungary.
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2
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Weke K, Singh A, Uwugiaren N, Alfaro JA, Wang T, Hupp TR, O'Neill JR, Vojtesek B, Goodlett DR, Williams SM, Zhou M, Kelly RT, Zhu Y, Dapic I. MicroPOTS Analysis of Barrett's Esophageal Cell Line Models Identifies Proteomic Changes after Physiologic and Radiation Stress. J Proteome Res 2021; 20:2195-2205. [PMID: 33491460 PMCID: PMC8155554 DOI: 10.1021/acs.jproteome.0c00629] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Moving from macroscale
preparative systems in proteomics to micro-
and nanotechnologies offers researchers the ability to deeply profile
smaller numbers of cells that are more likely to be encountered in
clinical settings. Herein a recently developed microscale proteomic
method, microdroplet processing in one pot for trace samples (microPOTS),
was employed to identify proteomic changes in ∼200 Barrett’s
esophageal cells following physiologic and radiation stress exposure.
From this small population of cells, microPOTS confidently identified
>1500 protein groups, and achieved a high reproducibility with
a Pearson’s
correlation coefficient value of R > 0.9 and over
50% protein overlap from replicates. A Barrett’s cell line
model treated with either lithocholic acid (LCA) or X-ray had 21 (e.g.,
ASNS, RALY, FAM120A, UBE2M, IDH1, ESD) and 32 (e.g., GLUL, CALU, SH3BGRL3,
S100A9, FKBP3, AGR2) overexpressed proteins, respectively, compared
to the untreated set. These results demonstrate the ability of microPOTS
to routinely identify and quantify differentially expressed proteins
from limited numbers of cells.
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Affiliation(s)
- Kenneth Weke
- University of Gdansk, International Centre for Cancer Vaccine Science, ul. Kładki 24, 80-822 Gdansk, Poland
| | - Ashita Singh
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, Scotland EH4 2XR, U.K.,Research Centre for Applied Molecular Oncology (RECAMO), Masaryk Memorial Cancer Institute, 656 53 Brno, Czech Republic
| | - Naomi Uwugiaren
- University of Gdansk, International Centre for Cancer Vaccine Science, ul. Kładki 24, 80-822 Gdansk, Poland
| | - Javier A Alfaro
- University of Gdansk, International Centre for Cancer Vaccine Science, ul. Kładki 24, 80-822 Gdansk, Poland.,Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, Scotland EH4 2XR, U.K
| | - Tongjie Wang
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, Scotland EH4 2XR, U.K
| | - Ted R Hupp
- University of Gdansk, International Centre for Cancer Vaccine Science, ul. Kładki 24, 80-822 Gdansk, Poland.,Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, Scotland EH4 2XR, U.K
| | - J Robert O'Neill
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, Scotland EH4 2XR, U.K.,Cambridge Oesophagogastric Centre, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, U.K
| | - Borek Vojtesek
- Research Centre for Applied Molecular Oncology (RECAMO), Masaryk Memorial Cancer Institute, 656 53 Brno, Czech Republic
| | - David R Goodlett
- University of Gdansk, International Centre for Cancer Vaccine Science, ul. Kładki 24, 80-822 Gdansk, Poland.,University of Victoria - Genome British Columbia Proteomics Centre, Victoria, BC V8Z 7X8, Canada.,Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Sarah M Williams
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Mowei Zhou
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Ryan T Kelly
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Ying Zhu
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Irena Dapic
- University of Gdansk, International Centre for Cancer Vaccine Science, ul. Kładki 24, 80-822 Gdansk, Poland
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3
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Liu W, Pang Y, Tan HY, Patel N, Jokhadze G, Guthals A, Bruening ML. Enzyme-containing spin membranes for rapid digestion and characterization of single proteins. Analyst 2018; 143:3907-3917. [PMID: 30039812 DOI: 10.1039/c8an00969d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Proteolytic digestion is an important step in characterizing protein sequences and post-translational modifications (PTMs) using mass spectrometry (MS). This study uses pepsin- or trypsin-containing spin membranes for rapid digestion of single proteins or simple protein mixtures prior to ultrahigh-resolution Orbitrap MS analysis. Centrifugation of 100 μL of pretreated protein solutions through the functionalized membranes requires less than 1 min and conveniently digests proteins into large peptides that aid in confirming specific protein sequence variations and PTMs. Peptic and tryptic peptides from spin digestion of apomyoglobin and four commercial monoclonal antibodies (mAbs) typically cover 100% of the protein sequences in direct infusion MS analysis. Increasing the spin rate leads to a higher fraction of large peptic peptides for apomyoglobin, and MS analysis of peptic and tryptic peptides reveals mAb PTMs such as N-terminal pyroglutamate formation, C-terminal lysine clipping and glycosylation. Relative to overnight in-solution digestion of mAbs, spin digestion yields higher sequence coverages. Spin-membrane digestion followed by infusion MS readily differentiates a mAb to the Ebola virus from a related antibody that differs by addition of a single amino acid.
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Affiliation(s)
- Weijing Liu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
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4
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Kecskemeti A, Gaspar A. Particle-based immobilized enzymatic reactors in microfluidic chips. Talanta 2018; 180:211-228. [DOI: 10.1016/j.talanta.2017.12.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 12/13/2017] [Indexed: 10/18/2022]
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5
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Liu B, Wu L, Zhou X, Wu H, Zheng B. Porous polydimethylsiloxane monolith for protein digestion. J Mater Chem B 2018; 6:824-829. [DOI: 10.1039/c7tb02738a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We developed a simple method to prepare interconnected porous PDMS monolith using glass microbubbles as the template.
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Affiliation(s)
- Baishu Liu
- Department of Chemistry
- The Chinese University of Hong Kong
- China
| | - Liang Wu
- Department of Chemistry
- The Chinese University of Hong Kong
- China
| | - Xiaohu Zhou
- Department of Chemistry
- The Chinese University of Hong Kong
- China
| | - Han Wu
- Department of Chemistry
- The Chinese University of Hong Kong
- China
| | - Bo Zheng
- Department of Chemistry
- The Chinese University of Hong Kong
- China
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6
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Mao Y, Černigoj U, Zalokar V, Štrancar A, Kulozik U. Production of β-Lactoglobulin hydrolysates by monolith based immobilized trypsin reactors. Electrophoresis 2017; 38:2947-2956. [DOI: 10.1002/elps.201700188] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 06/25/2017] [Accepted: 07/03/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Yuhong Mao
- Technical University of Munich; Chair for Food and Bioprocess Engineering; Freising-Weihenstephan Germany
| | | | | | | | - Ulrich Kulozik
- Technical University of Munich; Chair for Food and Bioprocess Engineering; Freising-Weihenstephan Germany
- Institute for Food and Health (ZIEL) - Technology Unit; Freising-Weihenstephan Germany
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7
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Coussot G, Ladner Y, Bayart C, Faye C, Vigier V, Perrin C. On-line capillary electrophoresis-based enzymatic methodology for the study of polymer-drug conjugates. J Chromatogr A 2015; 1376:159-66. [DOI: 10.1016/j.chroma.2014.12.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 11/17/2014] [Accepted: 12/08/2014] [Indexed: 01/08/2023]
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8
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Derr L, Steckbeck S, Dringen R, Colombi Ciacchi L, Treccani L, Rezwan K. Assessment of the Proteolytic Activity of α-Chymotrypsin Immobilized on Colloidal Particles by Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.951449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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9
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Nakagawa K, Tamura A, Chaiya C. Preparation of proteolytic microreactors by freeze-drying immobilization. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2014.07.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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An B, Zhang M, Qu J. Toward sensitive and accurate analysis of antibody biotherapeutics by liquid chromatography coupled with mass spectrometry. Drug Metab Dispos 2014; 42:1858-66. [PMID: 25185260 DOI: 10.1124/dmd.114.058917] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Remarkable methodological advances in the past decade have expanded the application of liquid chromatography coupled with mass spectrometry (LC/MS) analysis of biotherapeutics. Currently, LC/MS represents a promising alternative or supplement to the traditional ligand binding assay (LBA) in the pharmacokinetic, pharmacodynamic, and toxicokinetic studies of protein drugs, owing to the rapid and cost-effective method development, high specificity and reproducibility, low sample consumption, the capacity of analyzing multiple targets in one analysis, and the fact that a validated method can be readily adapted across various matrices and species. While promising, technical challenges associated with sensitivity, sample preparation, method development, and quantitative accuracy need to be addressed to enable full utilization of LC/MS. This article introduces the rationale and technical challenges of LC/MS techniques in biotherapeutics analysis and summarizes recently developed strategies to alleviate these challenges. Applications of LC/MS techniques on quantification and characterization of antibody biotherapeutics are also discussed. We speculate that despite the highly attractive features of LC/MS, it will not fully replace traditional assays such as LBA in the foreseeable future; instead, the forthcoming trend is likely the conjunction of biochemical techniques with versatile LC/MS approaches to achieve accurate, sensitive, and unbiased characterization of biotherapeutics in highly complex pharmaceutical/biologic matrices. Such combinations will constitute powerful tools to tackle the challenges posed by the rapidly growing needs for biotherapeutics development.
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Affiliation(s)
- Bo An
- Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Buffalo, New York (B.A., M.Z., J.Q.); New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, New York (B.A., M.Z., J.Q.)
| | - Ming Zhang
- Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Buffalo, New York (B.A., M.Z., J.Q.); New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, New York (B.A., M.Z., J.Q.)
| | - Jun Qu
- Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, Buffalo, New York (B.A., M.Z., J.Q.); New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, New York (B.A., M.Z., J.Q.)
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11
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Yamaguchi H, Miyazaki M. Enzyme-immobilized reactors for rapid and efficient sample preparation in MS-based proteomic studies. Proteomics 2013; 13:457-66. [DOI: 10.1002/pmic.201200272] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 11/03/2012] [Accepted: 11/14/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroshi Yamaguchi
- Liberal Arts Education Center; Tokai University; Minamiaso Kumamoto Japan
| | - Masaya Miyazaki
- Measurement Solution Research Center; National Institute of Advanced Industrial Science and Technology; Tosu Saga Japan
- Interdisciplinary Graduate School of Engineering Science; Kyushu University; Kasuga Fukuoka Japan
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12
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Yuan H, Zhou Y, Xia S, Zhang L, Zhang X, Wu Q, Liang Z, Zhang Y. Integrated Platform for Proteome Profiling with Combination of Microreversed Phase Based Protein and Peptide Separation via Online Solvent Exchange and Protein Digestion. Anal Chem 2012; 84:5124-32. [DOI: 10.1021/ac3006796] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Rashidian M, Song JM, Pricer RE, Distefano MD. Chemoenzymatic reversible immobilization and labeling of proteins without prior purification. J Am Chem Soc 2012; 134:8455-67. [PMID: 22435540 DOI: 10.1021/ja211308s] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Site-specific chemical modification of proteins is important for many applications in biology and biotechnology. Recently, our laboratory and others have exploited the high specificity of the enzyme protein farnesyltransferase (PFTase) to site-specifically modify proteins through the use of alternative substrates that incorporate bioorthogonal functionality including azides and alkynes. In this study, we evaluate two aldehyde-containing molecules as substrates for PFTase and as reactants in both oxime and hydrazone formation. Using green fluorescent protein (GFP) as a model system, we demonstrate that the purified protein can be enzymatically modified with either analogue to yield aldehyde-functionalized proteins. Oxime or hydrazone formation was then employed to immobilize, fluorescently label, or PEGylate the resulting aldehyde-containing proteins. Immobilization via hydrazone formation was also shown to be reversible via transoximization with a fluorescent alkoxyamine. After characterizing this labeling strategy using pure protein, the specificity of the enzymatic process was used to selectively label GFP present in crude E. coli extract followed by capture of the aldehyde-modified protein using hydrazide-agarose. Subsequent incubation of the immobilized protein using a fluorescently labeled or PEGylated alkoxyamine resulted in the release of pure GFP containing the desired site-specific covalent modifications. This procedure was also employed to produce PEGylated glucose-dependent insulinotropic polypeptide (GIP), a protein with potential therapeutic activity for diabetes. Given the specificity of the PFTase-catalyzed reaction coupled with the ability to introduce a CAAX-box recognition sequence onto almost any protein, this method shows great potential as a general approach for selective immobilization and labeling of recombinant proteins present in crude cellular extract without prior purification. Beyond generating site-specifically modified proteins, this approach for polypeptide modification could be particularly useful for large-scale production of protein conjugates for therapeutic or industrial applications.
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Affiliation(s)
- Mohammad Rashidian
- Department of Chemistry, University of Minnesota, Minneapolis, 55454, United States
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14
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Wu Q, Yuan H, Zhang L, Zhang Y. Recent advances on multidimensional liquid chromatography-mass spectrometry for proteomics: from qualitative to quantitative analysis--a review. Anal Chim Acta 2012; 731:1-10. [PMID: 22652259 DOI: 10.1016/j.aca.2012.04.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Revised: 04/09/2012] [Accepted: 04/09/2012] [Indexed: 02/08/2023]
Abstract
With the acceleration of proteome research, increasing attention has been paid to multidimensional liquid chromatography-mass spectrometry (MDLC-MS) due to its high peak capacity and separation efficiency. Recently, many efforts have been put to improve MDLC-based strategies including "top-down" and "bottom-up" to enable highly sensitive qualitative and quantitative analysis of proteins, as well as accelerate the whole analytical procedure. Integrated platforms with combination of sample pretreatment, multidimensional separations and identification were also developed to achieve high throughput and sensitive detection of proteomes, facilitating highly accurate and reproducible quantification. This review summarized the recent advances of such techniques and their applications in qualitative and quantitative analysis of proteomes.
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Affiliation(s)
- Qi Wu
- Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
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15
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Yamaguchi H, Miyazaki M, Maeda H. Limited proteolysis in proteomics using protease-immobilized microreactors. Methods Mol Biol 2012; 815:187-198. [PMID: 22130993 DOI: 10.1007/978-1-61779-424-7_15] [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] [Indexed: 05/31/2023]
Abstract
Proteolysis is the key step for proteomic studies integrated with MS analysis. Compared with the conventional method of in-solution digestion, proteolysis by a protease-immobilized microreactor has a number of advantages for proteomic analysis; i.e., rapid and efficient digestion, elimination of a purification step of the digests prior to MS, and high stability against a chemical or thermal denaturant. This chapter describes the preparation of the protease-immobilized microreactors and proteolysis performance of these microreactors. Immobilization of proteases by the formation of a polymeric membrane consisting solely of protease-proteins on the inner wall of the microchannel is performed. This was realized either by a cross-linking reaction in a laminar flow between lysine residues sufficiently present on the protein surfaces themselves or in the case of acidic proteins by mixing them with poly-lysine prior to the crosslink-reaction. The present procedure is simple and widely useful not only for proteases but also for several other enzymes.
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Affiliation(s)
- Hiroshi Yamaguchi
- Measurement Solution Research Center, National Institute of Advanced Industrial Science and Technology, Tosu, Saga, Japan
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16
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Abstract
Proteomic analysis requires the combination of an extensive suite of technologies including protein processing and separation, micro-flow HPLC, MS and bioinformatics. Although proteomic technologies are still in flux, approaches that bypass gel electrophoresis (gel-free approaches) are dominating the field of proteomics. Along with the development of gel-free proteomics, came the development of devices for the processing of proteomic samples termed proteomic reactors. These microfluidic devices provide rapid, robust and efficient pre-MS sample procession by performing protein sample preparation/concentration, digestion and peptide fractionation. The proteomic reactor has advanced in two major directions: immobilized enzyme reactor and ion exchange-based proteomic reactor. This review summarizes the technical developments and biological applications of the proteomic reactor over the last decade.
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Affiliation(s)
- Hu Zhou
- Ottawa Institute of Systems Biology (OISB), University of Ottawa, Ottawa, ON, Canada
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17
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Hustoft HK, Reubsaet L, Greibrokk T, Lundanes E, Malerod H. Critical assessment of accelerating trypsination methods. J Pharm Biomed Anal 2011; 56:1069-78. [PMID: 21873015 DOI: 10.1016/j.jpba.2011.08.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 08/03/2011] [Accepted: 08/04/2011] [Indexed: 10/17/2022]
Abstract
In LC-MS based proteomics, several accelerating trypsination methods have been introduced in order to speed up the protein digestion, which is often considered a bottleneck. Traditionally and most commonly, due to sample heterogeneity, overnight digestion at 37 °C is performed in order to digest both easily and more resistant proteins. High efficiency protein identification is important in proteomics, hours with LC-MS/MS analysis is needless if the majority of the proteins are not digested. Based on preliminary experiments utilizing some of the suggested accelerating methods, the question of whether accelerating digestion methods really provide the same protein identification efficiency as the overnight digestion was asked. In the present study we have evaluated four different accelerating trypsination methods (infrared (IR) and microwave assisted, solvent aided and immobilized trypsination). The methods were compared with conventional digestion at 37 °C in the same time range using a four protein mixture. Sequence coverage and peak area of intact proteins were used for the comparison. The accelerating methods were able to digest the proteins, but none of the methods appeared to be more efficient than the conventional digestion method at 37 °C. The conventional method at 37 °C is easy to perform using commercially available instrumentation and appears to be the digestion method to use. The digestion time in targeted proteomics can be optimized for each protein, while in comprehensive proteomics the digestion time should be extended due to sample heterogeneity and influence of other proteins present. Recommendations regarding optimizing and evaluating the tryptic digestion for both targeted and comprehensive proteomics are given, and a digestion method suitable as the first method for newcomers in comprehensive proteomics is suggested.
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Affiliation(s)
- Hanne Kolsrud Hustoft
- Department of Chemistry, University of Oslo, PO Box 1033, Blindern, NO-0315 Oslo, Norway
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18
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19
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Ning Z, Zhou H, Wang F, Abu-Farha M, Figeys D. Analytical Aspects of Proteomics: 2009–2010. Anal Chem 2011; 83:4407-26. [DOI: 10.1021/ac200857t] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
| | - Hu Zhou
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China 201203
| | - Fangjun Wang
- Key Lab of Separation Sciences for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China 116023
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20
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Lee J, Soper SA, Murray KK. A solid-phase bioreactor with continuous sample deposition for matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:693-699. [PMID: 21337630 DOI: 10.1002/rcm.4921] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report the development of a solid-phase proteolytic digestion and continuous deposition microfluidic chip platform for low volume fraction collection and off-line matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry. Tryptic peptides were formed in an on-chip bioreactor and continuously deposited onto a MALDI target plate using a motor-driven xyz stage. The bioreactor consisted of a 4 cm × 200 µm × 50 µm microfluidic channel with covalently immobilized trypsin on an array of 50 µm diameter micropost structures with a 50 µm edge-to-edge inter-post spacing. A 50 µm i.d. capillary tube was directly attached to the end of the bioreactor for continuous sample deposition. The MALDI target plate was modified by spin-coating a nitrocellulose solution containing a MALDI matrix on the surface prior to effluent deposition. Protein molecular weight standards were used for evaluating the performance of the digestion and continuous deposition system. Serpentine sample traces 200 µm wide were obtained with a 30 fmol/mm quantity deposition rate and a 3.3 nL/mm volumetric deposition rate.
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Affiliation(s)
- Jeonghoon Lee
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
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21
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Salim M, McArthur SL, Vaidyanathan S, Wright PC. Towards proteomics-on-chip: The role of the surface. ACTA ACUST UNITED AC 2011; 7:101-15. [DOI: 10.1039/c005236a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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22
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Yamaguchi H, Miyazaki M, Asanomi Y, Maeda H. Poly-lysine supported cross-linked enzyme aggregates with efficient enzymatic activity and high operational stability. Catal Sci Technol 2011. [DOI: 10.1039/c1cy00084e] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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23
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Multidigestion in continuous flow tandem protease-immobilized microreactors for proteomic analysis. Anal Biochem 2010; 407:12-8. [DOI: 10.1016/j.ab.2010.07.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Revised: 06/09/2010] [Accepted: 07/23/2010] [Indexed: 11/17/2022]
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24
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Lee JW, Kjeang E. A perspective on microfluidic biofuel cells. BIOMICROFLUIDICS 2010; 4:41301. [PMID: 21139699 PMCID: PMC2998034 DOI: 10.1063/1.3515523] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Accepted: 09/24/2010] [Indexed: 05/11/2023]
Abstract
This review article presents how microfluidic technologies and biological materials are paired to assist in the development of low cost, green energy fuel cell systems. Miniaturized biological fuel cells, employing enzymes or microorganisms as biocatalysts in an environmentally benign configuration, can become an attractive candidate for small-scale power source applications such as biological sensors, implantable medical devices, and portable electronics. State-of-the-art biofuel cell technologies are reviewed with emphasis on microfabrication compatibility and microfluidic fuel cell designs. Integrated microfluidic biofuel cell prototypes are examined with comparisons of their performance achievements and fabrication methods. The technical challenges for further developments and the potential research opportunities for practical cell designs are discussed.
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Affiliation(s)
- Jin Wook Lee
- Mechatronic Systems Engineering, School of Engineering Science, Simon Fraser University, 250-13450 102 Avenue, Surrey, British Columbia V3T 0A3, Canada
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Yamaguchi H, Miyazaki M, Maeda H. Proteolysis approach without chemical modification for a simple and rapid analysis of disulfide bonds using thermostable protease-immobilized microreactors. Proteomics 2010; 10:2942-9. [DOI: 10.1002/pmic.201000166] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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