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Mozgovicz M, Lingg N, Bresolin ITL, Schaufler T, Jungbauer A. Quantification of human intravenous immunoglobulin from plasma and in process samples by affinity chromatography. Prep Biochem Biotechnol 2024:1-6. [PMID: 39091236 DOI: 10.1080/10826068.2024.2384494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Advances in affinity chromatography now make it possible to analyze immunoglobulin G from plasma and its fractions with a simple chromatographic method. Ligands derived from camelid antibodies have been developed which have affinity to all 4 subclasses of human IgG without a cross reactivity to other immunoglobulins. The commercially available Capture Select FcXL is the basis for a simple method for direct quantification of immunoglobulin G from plasma or from fractions from cold ethanol precipitation. After direct injection of the sample into the column the unbound proteins are washed out with equilibration buffer and eluted with a pH-step. The elution the peak is integrated, and quantity is derived form a standard curve. The limit of detection with 40 µg/mL, and a linearity up to 250 µg/mL allows an analysis of samples ranging from 0.04 to 50 mg/mL using varying injection volume without further dilution and the two-wavelength detection. A full cycle is completed within five minutes. This method can serve as orthogonal method for in-process control but also for process development.
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Affiliation(s)
- Markus Mozgovicz
- University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
- Vrije Universiteit Brussel (VUB), Bruxelles, Belgium
| | - Nico Lingg
- University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
- Austrian Centre of Industrial Biotechnology, Vienna, Austria
| | | | - Theresa Schaufler
- University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Alois Jungbauer
- University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
- Austrian Centre of Industrial Biotechnology, Vienna, Austria
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2
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Introducing plasma/serum glycodepletion for the targeted proteomics analysis of cytolysis biomarkers. Talanta 2017; 170:473-480. [DOI: 10.1016/j.talanta.2017.04.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 04/07/2017] [Accepted: 04/16/2017] [Indexed: 11/18/2022]
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3
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Mori M, Ichibangase T, Yamashita S, Kijima-Suda I, Kawahara M, Imai K. Quantification of horse plasma proteins altered by xylazine using the fluorogenic derivatization-liquid chromatography-tandem mass spectrometry. J Equine Sci 2016; 26:141-6. [PMID: 26858580 PMCID: PMC4739145 DOI: 10.1294/jes.26.141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 11/09/2015] [Indexed: 01/10/2023] Open
Abstract
In the doping tests currently used in horse racing, prohibited substances or their metabolites are usually
directly detected in urine or blood samples. However, despite their lasting pharmaceutical effects, some
prohibited substances are rapidly eliminated from horse urine and blood, making them difficult to detect.
Therefore, new indirect biomarkers for doping, such as plasma proteins that are increased by the prohibited
substances, have recently attracted much attention. Here, a fluorogenic derivatization-liquid
chromatography-tandem mass spectrometry (FD-LC-MS/MS) method was adopted for horse plasma proteomics analysis,
in order to identify plasma proteins whose concentrations were altered in response to xylazine in Thoroughbred
horses. Xylazine, which is rapidly absorbed and eliminated and has possibility of the change in the levels of
plasma proteins, was selected as a model drug. Of the ten plasma proteins identified, four proteins, including
three acute phase proteins (haptoglobin, ceruloplasmin, and α-2-macroglobulin-like), were significantly
increased after xylazine administration. Therefore, our present approach might be useful in identifying
indirect biomarkers of drug administration.
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Affiliation(s)
- Miwako Mori
- Laboratory of Bio-analytical Chemistry, Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo 202-8585, Japan; Laboratory of Proteomics Analysis, Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo 202-8585, Japan; Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Tomoko Ichibangase
- Laboratory of Proteomics Analysis, Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo 202-8585, Japan
| | | | | | - Masahiro Kawahara
- Laboratory of Bio-analytical Chemistry, Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo 202-8585, Japan
| | - Kazuhiro Imai
- Laboratory of Proteomics Analysis, Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo 202-8585, Japan
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4
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Huang Z, Yan G, Gao M, Zhang X. Array-Based Online Two Dimensional Liquid Chromatography System Applied to Effective Depletion of High-Abundance Proteins in Human Plasma. Anal Chem 2016; 88:2440-5. [DOI: 10.1021/acs.analchem.5b04553] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zhi Huang
- Department
of Chemistry, Fudan University, Shanghai 200433, China
- Institutes
of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Guoquan Yan
- Department
of Chemistry, Fudan University, Shanghai 200433, China
- Institutes
of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Mingxia Gao
- Department
of Chemistry, Fudan University, Shanghai 200433, China
- Institutes
of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Xiangmin Zhang
- Department
of Chemistry, Fudan University, Shanghai 200433, China
- Institutes
of Biomedical Sciences, Fudan University, Shanghai 200032, China
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HUANG Z, DENG N, YAN GQ, GAO MX, LIANG Z, ZHANG LH, ZHANG XM, ZHANG YK. Array-Based Two Dimensional Liquid Chromatography System for Proteomic Analysis of Human Plasma. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1016/s1872-2040(15)60865-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Dayon L, Núñez Galindo A, Corthésy J, Cominetti O, Kussmann M. Comprehensive and Scalable Highly Automated MS-Based Proteomic Workflow for Clinical Biomarker Discovery in Human Plasma. J Proteome Res 2014; 13:3837-3845. [DOI: 10.1021/pr500635f] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Loïc Dayon
- Molecular Biomarkers Core, Nestlé Institute of Health Sciences, Campus EPFL, Quartier de l’innovation, Lausanne CH-1015, Switzerland
| | - Antonio Núñez Galindo
- Molecular Biomarkers Core, Nestlé Institute of Health Sciences, Campus EPFL, Quartier de l’innovation, Lausanne CH-1015, Switzerland
| | - John Corthésy
- Molecular Biomarkers Core, Nestlé Institute of Health Sciences, Campus EPFL, Quartier de l’innovation, Lausanne CH-1015, Switzerland
| | - Ornella Cominetti
- Molecular Biomarkers Core, Nestlé Institute of Health Sciences, Campus EPFL, Quartier de l’innovation, Lausanne CH-1015, Switzerland
| | - Martin Kussmann
- Molecular Biomarkers Core, Nestlé Institute of Health Sciences, Campus EPFL, Quartier de l’innovation, Lausanne CH-1015, Switzerland
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Removal of albumin and immunoglobulins from canine cerebrospinal fluid using depletion kits: a feasibility study. Fluids Barriers CNS 2014; 11:14. [PMID: 25002965 PMCID: PMC4079625 DOI: 10.1186/2045-8118-11-14] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 06/13/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Highly abundant proteins in biological fluids such as serum or cerebrospinal fluid (CSF) can hinder the detection of proteins in lower abundance, e.g., potential biomarkers. Commercial products are available for the depletion of albumin and immunoglobulins (Igs), although most of these kits have not been validated for dog samples. The present study therefore examines the use of different types of depletion kits for dog CSF. FINDINGS Three kits, with different mechanisms for the depletion of albumin and Igs, were tested with dog CSF specimens. One product significantly decreased the amount of albumin; with all kits, IgG was less efficiently removed than albumin. Mass spectrometry of the fractions eluted from the depletion columns revealed considerable co-depletion of other CSF proteins. CONCLUSIONS A commercially available depletion kit was identified which depletes albumin and (to a lower extent) immunoglobulins from dog CSF. However, the limited efficacy and the concomitant loss of other proteins from the sample should be taken into account when using this product.
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Ichibangase T, Imai K. Straightforward proteomic analysis reveals real dynamics of proteins in cells. J Pharm Biomed Anal 2014; 101:31-9. [PMID: 24953415 DOI: 10.1016/j.jpba.2014.05.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 05/20/2014] [Accepted: 05/22/2014] [Indexed: 01/23/2023]
Abstract
To reveal real dynamics of proteins in cells, we have developed a novel type of straightforward proteomic analysis named FD-LC-MS/MS. This technique consists of fluorogenic derivatization (FD) of intact proteins, followed by high performance liquid chromatographic (LC) separation, detection and quantification of the derivatized proteins, isolation of the subject proteins, enzymatic digestion of the isolated proteins, and identification of the proteins using HPLC and MS/MS with a database-searching algorithm. The method is uncomplicated, sensitive, reproducible, and easily quantifies and identifies intact proteins in tissues and cells. Additionally, in contrast to other proteomic approaches, our method does not require any pretreatment steps, such as precipitation and clean-up, except for the derivatization, resulting in high reproducibility and the same or higher detectability than that of other methods. In this article, after a brief review of other types of proteomic analyses, we introduce the development and application of the FD-LC-MS/MS method. We also discuss the features and perspectives of this method.
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Affiliation(s)
- Tomoko Ichibangase
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, Japan
| | - Kazuhiro Imai
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, Japan.
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Nakata K, Saitoh R, Amano J, Ichibangase T, Ishigai M, Imai K. Comprehensive and temporal analysis of secreted proteins in the medium from IL-6 exposed human hepatocyte. Biomed Chromatogr 2014; 28:742-50. [DOI: 10.1002/bmc.3103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Katsunori Nakata
- Laboratory of Proteomics Analysis, Research Institute of Pharmaceutical Sciences; Musashino University; 1-1-20 Shinmachi, Nishitokyo Tokyo 202-8585 Japan
- Research Division; Chugai Pharmaceutical Co., Ltd.; 1-135 Komakado, Gotemba Shizuoka 412-8513 Japan
| | - Ryoichi Saitoh
- Research Division; Chugai Pharmaceutical Co., Ltd.; 1-135 Komakado, Gotemba Shizuoka 412-8513 Japan
| | - Jun Amano
- Research Division; Chugai Pharmaceutical Co., Ltd.; 1-135 Komakado, Gotemba Shizuoka 412-8513 Japan
| | - Tomoko Ichibangase
- Laboratory of Proteomics Analysis, Research Institute of Pharmaceutical Sciences; Musashino University; 1-1-20 Shinmachi, Nishitokyo Tokyo 202-8585 Japan
| | - Masaki Ishigai
- Research Division; Chugai Pharmaceutical Co., Ltd.; 1-135 Komakado, Gotemba Shizuoka 412-8513 Japan
| | - Kazuhiro Imai
- Laboratory of Proteomics Analysis, Research Institute of Pharmaceutical Sciences; Musashino University; 1-1-20 Shinmachi, Nishitokyo Tokyo 202-8585 Japan
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10
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Kawashima Y, Satoh M, Saito T, Matsui T, Nomura F, Matsumoto H, Kodera Y. Cyclic sample pooling using two-dimensional liquid chromatography system enhances coverage in shotgun proteomics. Biomed Chromatogr 2013; 27:691-4. [PMID: 23390086 DOI: 10.1002/bmc.2864] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 12/03/2012] [Accepted: 12/06/2012] [Indexed: 11/09/2022]
Abstract
We report a cyclic sample pooling technique devised in two-dimensional liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS) shotgun proteomics that renders deeper proteome coverage; we combined low pH reversed-phase (RP) LC in trifluoroacetic acid in the first dimension, followed by cyclic sample pooling of the eluate and low-pH RP-LC in formic acid in the second dimension. The new protocol has a significantly higher resolving power suitable for LC-ESI-MS/MS shotgun proteomics.
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Affiliation(s)
- Yusuke Kawashima
- Center for Disease Proteomics, School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara-shi, Kanagawa, 252-0373, Japan
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11
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Zhu S, Zhang X, Gao M, Hong G, Yan G, Zhang X. Developing a strong anion exchange/RP (SAX/RP) 2D LC system for high-abundance proteins depletion in human plasma. Proteomics 2012; 12:3451-63. [DOI: 10.1002/pmic.201200036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 08/27/2012] [Accepted: 09/26/2012] [Indexed: 11/05/2022]
Affiliation(s)
- Shaochun Zhu
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University; Shanghai; China
| | - Xueyang Zhang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University; Shanghai; China
| | - Mingxia Gao
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University; Shanghai; China
| | - Guangfeng Hong
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University; Shanghai; China
| | - Guoquan Yan
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University; Shanghai; China
| | - Xiangmin Zhang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University; Shanghai; China
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12
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Boccardi C, Rocchiccioli S, Cecchettini A, Mercatanti A, Citti L. An automated plasma protein fractionation design: high-throughput perspectives for proteomic analysis. BMC Res Notes 2012; 5:612. [PMID: 23116412 PMCID: PMC3517536 DOI: 10.1186/1756-0500-5-612] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Accepted: 10/26/2012] [Indexed: 01/17/2023] Open
Abstract
Background Human plasma, representing the most complete record of the individual phenotype, is an appealing sample for proteomics analysis in clinical applications. Up to today, the major obstacle in a proteomics study of plasma is the large dynamic range of protein concentration and the efforts of many researchers focused on the resolution of this important drawback. Findings In this study, proteins from pooled plasma samples were fractionated according to their chemical characteristics on a home-designed SPE automated platform. The resulting fractions were digested and further resolved by reversed-phase liquid chromatography coupled with MALDI TOF/TOF mass spectrometry. A total of 712 proteins were successfully identified until a concentration level of ng/mL. Pearson correlation coefficient was used to test reproducibility. Conclusions Our multidimensional fractionation approach reduced the analysis time (2 days are enough to process 16 plasma samples filling a 96-well plate) over the conventional gel-electrophoresis or multi-LC column based methods. The robotic processing, avoiding contaminants or lack of sample handling skill, promises highly reproducible specimen analyses (more than 85% Pearson correlation). The automated platform here presented is flexible and easily modulated changing fractioning elements or detectors.
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Affiliation(s)
- Claudia Boccardi
- Institute of Clinical Physiology-CNR, Via Moruzzi 1, 56124 Pisa, Italy
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13
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Volk S, Schreiber TD, Eisen D, Wiese C, Planatscher H, Pynn CJ, Stoll D, Templin MF, Joos TO, Pötz O. Combining ultracentrifugation and peptide termini group-specific immunoprecipitation for multiplex plasma protein analysis. Mol Cell Proteomics 2012; 11:O111.015438. [PMID: 22527512 DOI: 10.1074/mcp.o111.015438] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Blood plasma is a valuable source of potential biomarkers. However, its complexity and the huge dynamic concentration range of its constituents complicate its analysis. To tackle this problem, an immunoprecipitation strategy was employed using antibodies directed against short terminal epitope tags (triple X proteomics antibodies), which allow the enrichment of groups of signature peptides derived from trypsin-digested plasma. Isolated signature peptides are subsequently detected using MALDI-TOF/TOF mass spectrometry. Sensitivity of the immunoaffinity approach was, however, compromised by the presence of contaminant peaks derived from the peptides of nontargeted high abundant proteins. A closer analysis of the enrichment strategy revealed nonspecific peptide binding to the solid phase affinity matrix as the major source of the contaminating peptides. We therefore implemented a sucrose density gradient ultracentrifugation separation step into the procedure. This yielded a 99% depletion of contaminating peptides from a sucrose fraction containing 70% of the peptide-antibody complexes and enabled the detection of the previously undetected low abundance protein filamin-A. Assessment of this novel approach using 15 different triple X proteomics antibodies demonstrated a more consistent detection of a greater number of targeted peptides and a significant reduction in the intensity of nonspecific peptides. Ultracentrifugation coupled with immunoaffinity MS approaches presents a powerful tool for multiplexed plasma protein analysis without the requirement for demanding liquid chromatography separation techniques.
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Affiliation(s)
- Sonja Volk
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
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Ichibangase T. Development of Highly Sensitive and Reproducible Analytical System for Biological Macromolecules with Fluorogenic Derivatization. CHROMATOGRAPHY 2012. [DOI: 10.15583/jpchrom.2012.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Depletion of hemoglobin and carbonic anhydrase from erythrocyte cytosolic samples by preparative clear native electrophoresis. Nat Protoc 2011; 7:36-44. [PMID: 22157974 DOI: 10.1038/nprot.2011.427] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Proteomic analysis of red cells is compromised by the presence of high-abundance proteins (hemoglobin and carbonic anhydrase-1), which completely obscure low-abundance species. The depletion method presented here involves performing native gel electrophoresis in a polyacrylamide gel tube using a modified electroelution cell. The electrophoretic run is interrupted intermittently to allow the recovery of at least three different liquid fractions, which can be analyzed by both native PAGE and 2D isoelectric focusing SDS-PAGE, or by shotgun mass spectrometry analysis after trypsin in-solution protein digestion. This low-cost, reproducible technique can be used to process large amounts of sample, and it increases the likelihood of detecting low-abundance proteins, thereby resulting in greater proteome coverage. The separation procedure takes approximately 6-7 h.
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16
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Zhu P, Bowden P, Zhang D, Marshall JG. Mass spectrometry of peptides and proteins from human blood. MASS SPECTROMETRY REVIEWS 2011; 30:685-732. [PMID: 24737629 DOI: 10.1002/mas.20291] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Revised: 12/09/2009] [Accepted: 01/19/2010] [Indexed: 06/03/2023]
Abstract
It is difficult to convey the accelerating rate and growing importance of mass spectrometry applications to human blood proteins and peptides. Mass spectrometry can rapidly detect and identify the ionizable peptides from the proteins in a simple mixture and reveal many of their post-translational modifications. However, blood is a complex mixture that may contain many proteins first expressed in cells and tissues. The complete analysis of blood proteins is a daunting task that will rely on a wide range of disciplines from physics, chemistry, biochemistry, genetics, electromagnetic instrumentation, mathematics and computation. Therefore the comprehensive discovery and analysis of blood proteins will rank among the great technical challenges and require the cumulative sum of many of mankind's scientific achievements together. A variety of methods have been used to fractionate, analyze and identify proteins from blood, each yielding a small piece of the whole and throwing the great size of the task into sharp relief. The approaches attempted to date clearly indicate that enumerating the proteins and peptides of blood can be accomplished. There is no doubt that the mass spectrometry of blood will be crucial to the discovery and analysis of proteins, enzyme activities, and post-translational processes that underlay the mechanisms of disease. At present both discovery and quantification of proteins from blood are commonly reaching sensitivities of ∼1 ng/mL.
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Affiliation(s)
- Peihong Zhu
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario, Canada M5B 2K3
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17
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A large, consistent plasma proteomics data set from prospectively collected breast cancer patient and healthy volunteer samples. J Transl Med 2011; 9:80. [PMID: 21619653 PMCID: PMC3120690 DOI: 10.1186/1479-5876-9-80] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 05/27/2011] [Indexed: 01/22/2023] Open
Abstract
Background Variability of plasma sample collection and of proteomics technology platforms has been detrimental to generation of large proteomic profile datasets from human biospecimens. Methods We carried out a clinical trial-like protocol to standardize collection of plasma from 204 healthy and 216 breast cancer patient volunteers. The breast cancer patients provided follow up samples at 3 month intervals. We generated proteomics profiles from these samples with a stable and reproducible platform for differential proteomics that employs a highly consistent nanofabricated ChipCube™ chromatography system for peptide detection and quantification with fast, single dimension mass spectrometry (LC-MS). Protein identification is achieved with subsequent LC-MS/MS analysis employing the same ChipCube™ chromatography system. Results With this consistent platform, over 800 LC-MS plasma proteomic profiles from prospectively collected samples of 420 individuals were obtained. Using a web-based data analysis pipeline for LC-MS profiling data, analyses of all peptide peaks from these plasma LC-MS profiles reveals an average coefficient of variability of less than 15%. Protein identification of peptide peaks of interest has been achieved with subsequent LC-MS/MS analyses and by referring to a spectral library created from about 150 discrete LC-MS/MS runs. Verification of peptide quantity and identity is demonstrated with several Multiple Reaction Monitoring analyses. These plasma proteomic profiles are publicly available through ProteomeCommons. Conclusion From a large prospective cohort of healthy and breast cancer patient volunteers and using a nano-fabricated chromatography system, a consistent LC-MS proteomics dataset has been generated that includes more than 800 discrete human plasma profiles. This large proteomics dataset provides an important resource in support of breast cancer biomarker discovery and validation efforts.
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Street JM, Dear JW. The application of mass-spectrometry-based protein biomarker discovery to theragnostics. Br J Clin Pharmacol 2010; 69:367-78. [PMID: 20406221 DOI: 10.1111/j.1365-2125.2009.03610.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Over the last decade rapid developments in mass spectrometry have allowed the identification of multiple proteins in complex biological samples. This proteomic approach has been applied to biomarker discovery in the context of clinical pharmacology (the combination of biomarker and drug now being termed 'theragnostics'). In this review we provide a roadmap for early protein biomarker discovery studies, focusing on some key questions that regularly confront researchers.
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Affiliation(s)
- Jonathan M Street
- Centre for Cardiovascular Science, Edinburgh University, Queen's Medical Research Institute, UK
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19
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Sjödin MO, Bergquist J, Wetterhall M. Mining ventricular cerebrospinal fluid from patients with traumatic brain injury using hexapeptide ligand libraries to search for trauma biomarkers. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:2003-12. [DOI: 10.1016/j.jchromb.2010.05.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 05/12/2010] [Accepted: 05/23/2010] [Indexed: 10/19/2022]
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20
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Drabovich AP, Diamandis EP. Combinatorial peptide libraries facilitate development of multiple reaction monitoring assays for low-abundance proteins. J Proteome Res 2010; 9:1236-45. [PMID: 20070123 DOI: 10.1021/pr900729g] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Low-abundance proteins present in biological fluids are often considered an attractive source of new disease biomarkers. Since such proteins are poorly observed in proteome-scale discovery experiments due to an overwhelming mass of high-abundance proteins, the development of quantitative multiple reaction monitoring (MRM) assays for low-abundance proteins is a challenging task. Here, we present a strategy that facilitates the development of MRM assays for large numbers of unpurified low-abundance proteins. Our discovery strategy is based on the reduction of the dynamic range of protein concentrations in biological fluids by means of one-bead one-compound combinatorial peptide libraries (CPL). Our 2D-LC-MS/MS approach allowed us to identify a total of 484 unique proteins in ovarian cancer ascites, and 216 proteins were assigned as low-abundance ones. Interestingly, 74 of those proteins have never been previously described in ascites fluid. Treatment with CPL allowed identification of a significantly higher number of unique peptides for low-abundance proteins and provided important empirical fragmentation information for development of MRM assays. Finally, we confirmed that MRM assays worked for 30 low-abundance proteins in the unfractionated ascites digest. Using a multiplexed MRM method, relative amounts of five proteins (kallikrein 6, metalloproteinase inhibitor 1, macrophage migration inhibitory factor, follistatin-related protein, and mesothelin) were determined in a set of ovarian cancer ascites. Multiplexed MRM assays targeting large numbers of proteins can be used to develop comprehensive panels of biomarkers with high sensitivity and selectivity, and to study complex protein networks.
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Affiliation(s)
- Andrei P Drabovich
- Samuel Lunenfeld Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
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21
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Proteomics for quality-control processes in transfusion medicine. Anal Bioanal Chem 2010; 398:111-24. [DOI: 10.1007/s00216-010-3799-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Revised: 04/24/2010] [Accepted: 04/27/2010] [Indexed: 12/23/2022]
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22
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Comparison of three methods for fractionation and enrichment of low molecular weight proteins for SELDI-TOF-MS differential analysis. Talanta 2010; 82:245-54. [PMID: 20685463 DOI: 10.1016/j.talanta.2010.04.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2009] [Revised: 03/31/2010] [Accepted: 04/16/2010] [Indexed: 11/23/2022]
Abstract
In most diseases, the clinical need for serum/plasma markers has never been so crucial, not only for diagnosis, but also for the selection of the most efficient therapies, as well as exclusion of ineffective or toxic treatment. Due to the high sample complexity, prefractionation is essential for exploring the deep proteome and finding specific markers. In this study, three different sample preparation methods (i.e., highly abundant protein precipitation, restricted access materials (RAM) combined with IMAC chromatography and peptide ligand affinity beads) were investigated in order to select the best fractionation step for further differential proteomic experiments focusing on the LMW proteome (MW inferior to 40,000 Da). Indeed, the aim was not to cover the entire plasma/serum proteome, but to enrich potentially interesting tissue leakage proteins. These three methods were evaluated on their reproducibility, on the SELDI-TOF-MS peptide/protein peaks generated after fractionation and on the information supplied. The studied methods appeared to give complementary information and presented good reproducibility (below 20%). Peptide ligand affinity beads were found to provide efficient depletion of HMW proteins and peak enrichment in protein/peptide profiles.
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