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Mohr AE, Ortega-Santos CP, Whisner CM, Klein-Seetharaman J, Jasbi P. Navigating Challenges and Opportunities in Multi-Omics Integration for Personalized Healthcare. Biomedicines 2024; 12:1496. [PMID: 39062068 PMCID: PMC11274472 DOI: 10.3390/biomedicines12071496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/25/2024] [Accepted: 06/28/2024] [Indexed: 07/28/2024] Open
Abstract
The field of multi-omics has witnessed unprecedented growth, converging multiple scientific disciplines and technological advances. This surge is evidenced by a more than doubling in multi-omics scientific publications within just two years (2022-2023) since its first referenced mention in 2002, as indexed by the National Library of Medicine. This emerging field has demonstrated its capability to provide comprehensive insights into complex biological systems, representing a transformative force in health diagnostics and therapeutic strategies. However, several challenges are evident when merging varied omics data sets and methodologies, interpreting vast data dimensions, streamlining longitudinal sampling and analysis, and addressing the ethical implications of managing sensitive health information. This review evaluates these challenges while spotlighting pivotal milestones: the development of targeted sampling methods, the use of artificial intelligence in formulating health indices, the integration of sophisticated n-of-1 statistical models such as digital twins, and the incorporation of blockchain technology for heightened data security. For multi-omics to truly revolutionize healthcare, it demands rigorous validation, tangible real-world applications, and smooth integration into existing healthcare infrastructures. It is imperative to address ethical dilemmas, paving the way for the realization of a future steered by omics-informed personalized medicine.
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Affiliation(s)
- Alex E. Mohr
- Systems Precision Engineering and Advanced Research (SPEAR), Theriome Inc., Phoenix, AZ 85004, USA; (A.E.M.); (C.P.O.-S.); (C.M.W.); (J.K.-S.)
- College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA
- Biodesign Institute Center for Health Through Microbiomes, Arizona State University, Tempe, AZ 85281, USA
| | - Carmen P. Ortega-Santos
- Systems Precision Engineering and Advanced Research (SPEAR), Theriome Inc., Phoenix, AZ 85004, USA; (A.E.M.); (C.P.O.-S.); (C.M.W.); (J.K.-S.)
- Department of Exercise and Nutrition Sciences, Milken Institute School of Public Health, George Washington University, Washington, DC 20052, USA
| | - Corrie M. Whisner
- Systems Precision Engineering and Advanced Research (SPEAR), Theriome Inc., Phoenix, AZ 85004, USA; (A.E.M.); (C.P.O.-S.); (C.M.W.); (J.K.-S.)
- College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA
- Biodesign Institute Center for Health Through Microbiomes, Arizona State University, Tempe, AZ 85281, USA
| | - Judith Klein-Seetharaman
- Systems Precision Engineering and Advanced Research (SPEAR), Theriome Inc., Phoenix, AZ 85004, USA; (A.E.M.); (C.P.O.-S.); (C.M.W.); (J.K.-S.)
- College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85281, USA
| | - Paniz Jasbi
- Systems Precision Engineering and Advanced Research (SPEAR), Theriome Inc., Phoenix, AZ 85004, USA; (A.E.M.); (C.P.O.-S.); (C.M.W.); (J.K.-S.)
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2
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Cao Z, Yu LR. Mass Spectrometry-Based Proteomics for Biomarker Discovery. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2022; 2486:3-17. [PMID: 35437715 DOI: 10.1007/978-1-0716-2265-0_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Proteomics plays a pivotal role in systems medicine, in which pharmacoproteomics and toxicoproteomics have been developed to address questions related to efficacy and toxicity of drugs. Mass spectrometry is the core technology for quantitative proteomics, providing the capabilities of identification and quantitation of thousands of proteins. The technology has been applied to biomarker discovery and understanding the mechanisms of drug action. Both stable isotope labeling of proteins or peptides and label-free approaches have been incorporated with multidimensional LC separation and tandem mass spectrometry (LC-MS/MS) to increase the coverage and depth of proteome analysis. A protocol of such an approach exemplified by dimethyl labeling in combination with 2D-LC-MS/MS is described. With further development of novel proteomic tools and increase in sample throughput, the full spectrum of mass spectrometry-based proteomic research will greatly advance systems medicine.
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Affiliation(s)
- Zhijun Cao
- Division of Systems Biology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Li-Rong Yu
- Division of Systems Biology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA.
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3
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Wang Y, Feng F, Zheng P, Wang L, Wang Y, Lv Y, Shen L, Li K, Feng T, Chen Y, Liu Z, Yao Y. Dysregulated lncRNA and mRNA may promote the progression of ischemic stroke via immune and inflammatory pathways: results from RNA sequencing and bioinformatics analysis. Genes Genomics 2021; 44:97-108. [PMID: 34699043 PMCID: PMC8546200 DOI: 10.1007/s13258-021-01173-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/27/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) are widely involved in gene transcription regulation and which act as epigenetic modifiers in many diseases. OBJECTIVE To determine whether lncRNAs are involved in ischemic stroke (IS), we analyzed the expression profile of lncRNAs and mRNAs in IS. METHODS RNA sequencing was performed on the blood of three pairs of IS patients and healthy controls. Differential expression analysis was used to identify differentially expressed lncRNAs (DElncRNAs) and mRNAs (DEmRNAs). Based on the co-expression relationships between lncRNA and mRNA, a series of bioinformatics analysis including GO and KEGG enrichment analysis and PPI analysis, were conducted to predict the function of lncRNA. RESULTS RNA sequencing produced a total of 5 DElncRNAs and 144 DEmRNAs. Influenza A pathway and Herpes simplex infection pathway were the most significant pathways. EP300 and NFKB1 were the most important target proteins, and Human leucocyte antigen (HLA) family were the key genes in IS. CONCLUSIONS Analysis of this study revealed that dysregulated lncRNAs in IS may lead to IS by affecting the immune and inflammation system.
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Affiliation(s)
- Yingshuang Wang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, China
| | - Feifei Feng
- Jilin Province of Jilin Combine Traditional Chinese and Western Medicine Hospital, Jilin, 132000, China
| | - Pingping Zheng
- Futian District Center for Disease Prevention and Control, Shenzhen, 518040, China
| | - Lijuan Wang
- Department of Neurology, The Neuroscience Center, The First Hospital of Jilin University, Jilin University, Changchun, 130021, China
| | - Yanjun Wang
- Nursing Department, The Second Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Yaogai Lv
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, China
| | - Li Shen
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, China
| | - Kexin Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, China
| | - Tianyu Feng
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, China
| | - Yang Chen
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, China
| | - Zhigang Liu
- Department of Pain Management, The Second Hospital of Jilin University, No.218, Ziqiang Street, Nanguan District, Changchun, 130041, Jilin, China.
| | - Yan Yao
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, China.
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Roychowdhury T, Chattopadhyay S. Chemical Decorations of "MARs" Residents in Orchestrating Eukaryotic Gene Regulation. Front Cell Dev Biol 2020; 8:602994. [PMID: 33409278 PMCID: PMC7779526 DOI: 10.3389/fcell.2020.602994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/19/2020] [Indexed: 01/19/2023] Open
Abstract
Genome organization plays a crucial role in gene regulation, orchestrating multiple cellular functions. A meshwork of proteins constituting a three-dimensional (3D) matrix helps in maintaining the genomic architecture. Sequences of DNA that are involved in tethering the chromatin to the matrix are called scaffold/matrix attachment regions (S/MARs), and the proteins that bind to these sequences and mediate tethering are termed S/MAR-binding proteins (S/MARBPs). The regulation of S/MARBPs is important for cellular functions and is altered under different conditions. Limited information is available presently to understand the structure–function relationship conclusively. Although all S/MARBPs bind to DNA, their context- and tissue-specific regulatory roles cannot be justified solely based on the available information on their structures. Conformational changes in a protein lead to changes in protein–protein interactions (PPIs) that essentially would regulate functional outcomes. A well-studied form of protein regulation is post-translational modification (PTM). It involves disulfide bond formation, cleavage of precursor proteins, and addition or removal of low-molecular-weight groups, leading to modifications like phosphorylation, methylation, SUMOylation, acetylation, PARylation, and ubiquitination. These chemical modifications lead to varied functional outcomes by mechanisms like modifying DNA–protein interactions and PPIs, altering protein function, stability, and crosstalk with other PTMs regulating subcellular localizations. S/MARBPs are reported to be regulated by PTMs, thereby contributing to gene regulation. In this review, we discuss the current understanding, scope, disease implications, and future perspectives of the diverse PTMs regulating functions of S/MARBPs.
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Affiliation(s)
- Tanaya Roychowdhury
- Department of Biological Sciences, Birla Institute of Technology & Science, Pilani, India.,Cancer Biology and Inflammatory Disorder Division, Indian Institute of Chemical Biology, Kolkata, India
| | - Samit Chattopadhyay
- Department of Biological Sciences, Birla Institute of Technology & Science, Pilani, India.,Cancer Biology and Inflammatory Disorder Division, Indian Institute of Chemical Biology, Kolkata, India
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Xu T, Shen X, Yang Z, Chen D, Lubeckyj RA, McCool EN, Sun L. Automated Capillary Isoelectric Focusing-Tandem Mass Spectrometry for Qualitative and Quantitative Top-Down Proteomics. Anal Chem 2020; 92:15890-15898. [PMID: 33263984 PMCID: PMC8564864 DOI: 10.1021/acs.analchem.0c03266] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Top-down proteomics (TDP) aims to delineate proteomes in a proteoform-specific manner, which is vital for accurately understanding protein function in cellular processes. It requires high-capacity separation of proteoforms before mass spectrometry (MS) and tandem MS (MS/MS). Capillary isoelectric focusing (cIEF)-MS has been recognized as a useful tool for TDP in the 1990s because cIEF is capable of high-resolution separation of proteoforms. Previous cIEF-MS studies concentrated on measuring the protein's mass without MS/MS, impeding the confident proteoform identification in complex samples and the accurate localization of post-translational modifications on proteoforms. Herein, for the first time, we present automated cIEF-MS/MS-based TDP for large-scale delineation of proteoforms in complex proteomes. Single-shot cIEF-MS/MS identified 711 proteoforms from an Escherichia coli (E. coli) proteome consuming only nanograms of proteins. Coupling two-dimensional size-exclusion chromatography (SEC)-cIEF to ESI-MS/MS enabled the identification of nearly 2000 proteoforms from the E. coli proteome. Label-free quantitative TDP of zebrafish male and female brains using SEC-cIEF-MS/MS quantified thousands of proteoforms and revealed sex-dependent proteoform profiles in brains. Particularly, we discovered several proteolytic proteoforms of pro-opiomelanocortin and prodynorphin with significantly higher abundance in male zebrafish brains as potential endogenous hormone proteoforms. Multilevel quantitative proteomics (TDP and bottom-up proteomics) of the brains revealed that the majority of proteoforms having statistically significant difference in abundance between genders showed no abundance difference at the protein group level. This work represents the first multilevel quantitative proteomics study of sexual dimorphism of the brain.
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Affiliation(s)
- Tian Xu
- Department of Chemistry, Michigan State University, 578 S Shaw Ln, East Lansing, Michigan 48824, United States
| | - Xiaojing Shen
- Department of Chemistry, Michigan State University, 578 S Shaw Ln, East Lansing, Michigan 48824, United States
| | - Zhichang Yang
- Department of Chemistry, Michigan State University, 578 S Shaw Ln, East Lansing, Michigan 48824, United States
| | - Daoyang Chen
- Department of Chemistry, Michigan State University, 578 S Shaw Ln, East Lansing, Michigan 48824, United States
| | - Rachele A Lubeckyj
- Department of Chemistry, Michigan State University, 578 S Shaw Ln, East Lansing, Michigan 48824, United States
| | - Elijah N McCool
- Department of Chemistry, Michigan State University, 578 S Shaw Ln, East Lansing, Michigan 48824, United States
| | - Liangliang Sun
- Department of Chemistry, Michigan State University, 578 S Shaw Ln, East Lansing, Michigan 48824, United States
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Thomas SL, Thacker JB, Schug KA, Maráková K. Sample preparation and fractionation techniques for intact proteins for mass spectrometric analysis. J Sep Sci 2020; 44:211-246. [DOI: 10.1002/jssc.202000936] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Shannon L. Thomas
- Department of Chemistry & Biochemistry The University of Texas Arlington Arlington Texas USA
| | - Jonathan B. Thacker
- Department of Chemistry & Biochemistry The University of Texas Arlington Arlington Texas USA
| | - Kevin A. Schug
- Department of Chemistry & Biochemistry The University of Texas Arlington Arlington Texas USA
| | - Katarína Maráková
- Department of Pharmaceutical Analysis and Nuclear Pharmacy Faculty of Pharmacy Comenius University in Bratislava Bratislava Slovakia
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Bioinformatics for Marine Products: An Overview of Resources, Bottlenecks, and Perspectives. Mar Drugs 2019; 17:md17100576. [PMID: 31614509 PMCID: PMC6835618 DOI: 10.3390/md17100576] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/01/2019] [Accepted: 10/02/2019] [Indexed: 12/13/2022] Open
Abstract
The sea represents a major source of biodiversity. It exhibits many different ecosystems in a huge variety of environmental conditions where marine organisms have evolved with extensive diversification of structures and functions, making the marine environment a treasure trove of molecules with potential for biotechnological applications and innovation in many different areas. Rapid progress of the omics sciences has revealed novel opportunities to advance the knowledge of biological systems, paving the way for an unprecedented revolution in the field and expanding marine research from model organisms to an increasing number of marine species. Multi-level approaches based on molecular investigations at genomic, metagenomic, transcriptomic, metatranscriptomic, proteomic, and metabolomic levels are essential to discover marine resources and further explore key molecular processes involved in their production and action. As a consequence, omics approaches, accompanied by the associated bioinformatic resources and computational tools for molecular analyses and modeling, are boosting the rapid advancement of biotechnologies. In this review, we provide an overview of the most relevant bioinformatic resources and major approaches, highlighting perspectives and bottlenecks for an appropriate exploitation of these opportunities for biotechnology applications from marine resources.
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Basharat AR, Iman K, Khalid MF, Anwar Z, Hussain R, Kabir HG, Tahreem M, Shahid A, Humayun M, Hayat HA, Mustafa M, Shoaib MA, Ullah Z, Zarina S, Ahmed S, Uddin E, Hamera S, Ahmad F, Chaudhary SU. SPECTRUM - A MATLAB Toolbox for Proteoform Identification from Top-Down Proteomics Data. Sci Rep 2019; 9:11267. [PMID: 31375721 PMCID: PMC6677810 DOI: 10.1038/s41598-019-47724-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 06/10/2019] [Indexed: 01/07/2023] Open
Abstract
Top-Down Proteomics (TDP) is an emerging proteomics protocol that involves identification, characterization, and quantitation of intact proteins using high-resolution mass spectrometry. TDP has an edge over other proteomics protocols in that it allows for: (i) accurate measurement of intact protein mass, (ii) high sequence coverage, and (iii) enhanced identification of post-translational modifications (PTMs). However, the complexity of TDP spectra poses a significant impediment to protein search and PTM characterization. Furthermore, limited software support is currently available in the form of search algorithms and pipelines. To address this need, we propose 'SPECTRUM', an open-architecture and open-source toolbox for TDP data analysis. Its salient features include: (i) MS2-based intact protein mass tuning, (ii) de novo peptide sequence tag analysis, (iii) propensity-driven PTM characterization, (iv) blind PTM search, (v) spectral comparison, (vi) identification of truncated proteins, (vii) multifactorial coefficient-weighted scoring, and (viii) intuitive graphical user interfaces to access the aforementioned functionalities and visualization of results. We have validated SPECTRUM using published datasets and benchmarked it against salient TDP tools. SPECTRUM provides significantly enhanced protein identification rates (91% to 177%) over its contemporaries. SPECTRUM has been implemented in MATLAB, and is freely available along with its source code and documentation at https://github.com/BIRL/SPECTRUM/.
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Affiliation(s)
- Abdul Rehman Basharat
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Kanzal Iman
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Muhammad Farhan Khalid
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Zohra Anwar
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Rashid Hussain
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Humnah Gohar Kabir
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Maria Tahreem
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Anam Shahid
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Maheen Humayun
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Hira Azmat Hayat
- Department of Computer Science, Lahore University of Management Sciences, Lahore, Pakistan
| | - Muhammad Mustafa
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Muhammad Ali Shoaib
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Zakir Ullah
- King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Lahore University of Management Sciences, Lahore, Pakistan
| | - Shamshad Zarina
- National Center for Proteomics, University of Karachi, Karachi, Pakistan
| | - Sameer Ahmed
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan
| | - Emad Uddin
- Department of Mechanical Engineering, National University of Sciences and Technology, Islamabad, Pakistan
| | - Sadia Hamera
- Institute of Life Sciences, University of Rostock, Rostock, Germany
- Lahore University of Management Sciences, Lahore, Pakistan
| | - Fayyaz Ahmad
- Department of Statistics, University of Gujrat, Gujrat, Pakistan
| | - Safee Ullah Chaudhary
- Biomedical Informatics Research Laboratory, Department of Biology, Lahore University of Management Sciences, Lahore, Pakistan.
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Han J, Permentier H, Bischoff R, Groothuis G, Casini A, Horvatovich P. Imaging of protein distribution in tissues using mass spectrometry: An interdisciplinary challenge. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.12.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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10
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Martinez BI, Stabenfeldt SE. Current trends in biomarker discovery and analysis tools for traumatic brain injury. J Biol Eng 2019; 13:16. [PMID: 30828380 PMCID: PMC6381710 DOI: 10.1186/s13036-019-0145-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 02/06/2019] [Indexed: 12/13/2022] Open
Abstract
Traumatic brain injury (TBI) affects 1.7 million people in the United States each year, causing lifelong functional deficits in cognition and behavior. The complex pathophysiology of neural injury is a primary barrier to developing sensitive and specific diagnostic tools, which consequentially has a detrimental effect on treatment regimens. Biomarkers of other diseases (e.g. cancer) have provided critical insight into disease emergence and progression that lend to developing powerful clinical tools for intervention. Therefore, the biomarker discovery field has recently focused on TBI and made substantial advancements to characterize markers with promise of transforming TBI patient diagnostics and care. This review focuses on these key advances in neural injury biomarkers discovery, including novel approaches spanning from omics-based approaches to imaging and machine learning as well as the evolution of established techniques.
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Affiliation(s)
- Briana I. Martinez
- School of Life Sciences, Arizona State University, Tempe, AZ USA
- School of Biological and Health Systems Engineering, Ira A. Fulton School of Engineering, Arizona State University, PO Box 879709, Tempe, AZ 85287-9709 USA
| | - Sarah E. Stabenfeldt
- School of Biological and Health Systems Engineering, Ira A. Fulton School of Engineering, Arizona State University, PO Box 879709, Tempe, AZ 85287-9709 USA
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Mass Spectrometry-Based Biomarkers in Drug Development. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1140:435-449. [PMID: 31347063 DOI: 10.1007/978-3-030-15950-4_25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Advances in mass spectrometry, proteomics, protein bioanalytical approaches, and biochemistry have led to a rapid evolution and expansion in the area of mass spectrometry-based biomarker discovery and development. The last decade has also seen significant progress in establishing accepted definitions, guidelines, and criteria for the analytical validation, acceptance and qualification of biomarkers. These advances have coincided with a decreased return on investment for pharmaceutical research and development and an increasing need for better early decision making tools. Empowering development teams with tools to measure a therapeutic interventions impact on disease state and progression, measure target engagement and to confirm predicted pharmacodynamic effects is critical to efficient data-driven decision making. Appropriate implementation of a biomarker or a combination of biomarkers can enhance understanding of a drugs mechanism, facilitate effective translation from the preclinical to clinical space, enable early proof of concept and dose selection, and increases the efficiency of drug development. Here we will provide descriptions of the different classes of biomarkers that have utility in the drug development process as well as review specific, protein-centric, mass spectrometry-based approaches for the discovery of biomarkers and development of targeted assays to measure these markers in a selective and analytically precise manner.
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12
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Cheng C, Liao CF. Novel Dual Two-Dimensional Liquid Chromatography Online Coupled to Ultraviolet Detector, Fluorescence Detector, Ion-Trap Mass Spectrometer for Short Peptide Amino Acid Sequence Determination with Bottom-Up Strategy. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201700380] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cheanyeh Cheng
- Research Center for Analysis and Identification and Department of Chemistry; Chung Yuan Christian University, Chungli District; Taoyuan City Taiwan 32023 R. O. China
| | - Chien-Fu Liao
- Research Center for Analysis and Identification and Department of Chemistry; Chung Yuan Christian University, Chungli District; Taoyuan City Taiwan 32023 R. O. China
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Peng L, Cantor DI, Huang C, Wang K, Baker MS, Nice EC. Tissue and plasma proteomics for early stage cancer detection. Mol Omics 2018; 14:405-423. [PMID: 30251724 DOI: 10.1039/c8mo00126j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The pursuit of novel and effective biomarkers is essential in the struggle against cancer, which is a leading cause of mortality worldwide. Here we discuss the relative advantages and disadvantages of the most frequently used proteomics techniques, concentrating on the latest advances and application of tissue and plasma proteomics for novel cancer biomarker discovery.
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Affiliation(s)
- Liyuan Peng
- Dept of Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy
- Chengdu
- P. R. China
| | - David I. Cantor
- Australian Proteome Analysis Facility (APAF), Department of Molecular Sciences, Macquarie University
- New South Wales
- Australia
| | - Canhua Huang
- Dept of Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy
- Chengdu
- P. R. China
| | - Kui Wang
- Dept of Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, and Collaborative Innovation Center for Biotherapy
- Chengdu
- P. R. China
| | - Mark S. Baker
- Department of Biomedical Sciences, Faculty of Medicine & Health Sciences, Macquarie University
- Australia
| | - Edouard C. Nice
- Department of Biochemistry and Molecular Biology, Monash University
- Clayton
- Australia
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Setner B, Rudowska M, Kluczyk A, Stefanowicz P, Szewczuk Z. The 5-azoniaspiro[4.4]nonyl group for improved MS peptide analysis: A novel non-fragmenting ionization tag for mass spectrometric sensitive sequencing of peptides. Anal Chim Acta 2017; 986:71-81. [DOI: 10.1016/j.aca.2017.07.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 07/10/2017] [Accepted: 07/12/2017] [Indexed: 01/02/2023]
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15
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DMF-MALDI: droplet based microfluidic combined to MALDI-TOF for focused peptide detection. Sci Rep 2017; 7:6756. [PMID: 28754890 PMCID: PMC5533719 DOI: 10.1038/s41598-017-06660-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 06/13/2017] [Indexed: 12/21/2022] Open
Abstract
We present an automated droplet microfluidic system (DMF) to generate monitored nanoliter aqueous droplets in oil and their deposition on a commercial stainless steel plate for MALDI-TOF analysis of peptides or protein digests. We demonstrate that DMF-MALDI combination focuses the analyte on the MALDI plate, increasing considerably the homogeneity of the dried material. This results in a 30times enhanced MALDI-TOF MS signal for a model peptide, allowing a significant improvement of the detection sensitivity limit (down to few tens of attomoles). Moreover, positive detection can be achieved from sub-nanomolar peptides solutions and better overall protein sequence coverages are obtained from few tens attomoles of protein digest. These results make DMF-MALDI a promising approach for the treatment of peptides samples as well as a key component for an integrated approach in the proteomic field.
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Saleh Al-w A, Nazri Isma M, Muhamad Sa S, Abdul Khal I, Ayesh Moha S, Alsayrafi M, Michael Ha T, Binti A. L A. Identification of Glycobiomarker Candidates for Breast Cancer Using LTQ-Orbitrap Fusion Technique. INT J PHARMACOL 2017. [DOI: 10.3923/ijp.2017.425.437] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Liang K, Wu H, Li Y. Immune-enrichment of insulin in bio-fluids on gold-nanoparticle decorated target plate and in situ detection by MALDI MS. Clin Proteomics 2017; 14:5. [PMID: 28115918 PMCID: PMC5244591 DOI: 10.1186/s12014-017-9139-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 01/06/2017] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Detection of low-abundance biomarkers using mass spectrometry (MS) is often hampered by non-target molecules in biological fluids. In addition, current procedures for sample preparation increase sample consumption and limit analysis throughput. Here, a simple strategy is proposed to construct an antibody-modified target plate for high-sensitivity MS detection of target markers such as insulin, in biological fluids. METHODS The target plate was first modified with gold nanoparticle, and then functionalized with corresponding antibody through chemical conjugation. Clinical specimens were incubated onto these antibody-functionalized target plates, and then subjected to matrix assisted laser desorption ionization mass spectrometry analysis. RESULTS Insulin in samples was enriched specifically on this functional plate. The detection just required low-volume samples (lower than 5 µL) and simplified handling process (within 40 min). This method exhibited high sensitivity (limit of detection in standard samples, 0.8 nM) and good linear correlation of MS intensity with insulin concentration (R2 = 0.994). More importantly, insulin present in real biological fluids such as human serum and cell lysate could be detected directly by using this functional target plate without additional sample preparations. CONCLUSIONS Our method is easy to manipulate, cost-effective, and with a potential to be applied in the field of clinical biomarker detection.
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Affiliation(s)
- Kai Liang
- Laboratory of Interdisciplinary Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Hongmei Wu
- Laboratory of Interdisciplinary Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China.,GuangDong Bio-healtech Advanced Co., Ltd, Foshan City, 52800 GuangDong Province China
| | - Yan Li
- Laboratory of Interdisciplinary Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China
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Yang M, Nelson R, Ros A. Toward Analysis of Proteins in Single Cells: A Quantitative Approach Employing Isobaric Tags with MALDI Mass Spectrometry Realized with a Microfluidic Platform. Anal Chem 2016; 88:6672-9. [PMID: 27257853 DOI: 10.1021/acs.analchem.5b03419] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Protein identification and quantification in individual cells is essential to understand biological processes such as those involved in cell apoptosis, cancer, biomarker discovery, disease diagnostics, pathology, or therapy. Compared with present single cell genome analysis, probing the protein content of single cells has been hampered by the lack of a protein amplification technique. Here, we report the development of a quantitative mass spectrometric approach combined with microfluidic technology reaching the detection sensitivity of high abundant proteins in single cells. A microfluidic platform with a series of chambers and valves, ensuring a set of defined wells for absolute quantification of targeted proteins, was developed and combined with isotopic labeling strategies employing isobaric tags for relative and absolute quantitation (iTRAQ)-labels. To this aim, we adapted iTRAQ labeling to an on-chip protocol. Simultaneous protein digestion and labeling performed on the microfluidic platform rendered the labeling strategy compatible with all necessary manipulation steps on-chip, including the matrix delivery for MALDI-TOF analysis. We demonstrate this approach with the apoptosis related protein Bcl-2 and quantitatively assess the number of Bcl-2 molecules detected. We anticipate that this approach will eventually allow quantification of protein expression on the single cell level.
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Affiliation(s)
- Mian Yang
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287, United States.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University , Tempe, Arizona 85287, United States
| | - Randall Nelson
- Molecular Biomarkers Laboratory, The Biodesign Institute, Arizona State University , Tempe, Arizona 85287, United States
| | - Alexandra Ros
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287, United States.,Center for Applied Structural Discovery, The Biodesign Institute, Arizona State University , Tempe, Arizona 85287, United States
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Hunt NJ, Phillips L, Waters KA, Machaalani R. Proteomic MALDI-TOF/TOF-IMS examination of peptide expression in the formalin fixed brainstem and changes in sudden infant death syndrome infants. J Proteomics 2016; 138:48-60. [PMID: 26926438 DOI: 10.1016/j.jprot.2016.02.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 01/30/2016] [Accepted: 02/23/2016] [Indexed: 01/23/2023]
Abstract
UNLABELLED Matrix assisted laser desorption/ionisation imaging mass spectrometry (MALDI-IMS) has not previously been utilised to examine sudden infant death syndrome (SIDS). This study aimed to optimise MALDI IMS for use on archived formalin-fixed-paraffin-embedded human infant medulla tissue (n=6, controls; n=6, SIDS) to evaluate differences between multiple nuclei of the medulla by using high resolution IMS. Profiles were compared between SIDS and age/sex matched controls. LC-MALDI identified 55 proteins based on 321 peptides across all samples; 286 peaks were found using IMS, corresponding to these 55 proteins that were directly compared between controls and SIDS. Control samples were used to identify common peptides for neuronal/non-neuronal structures allowing identification of medullary regions. In SIDS, abnormal expression patterns of 41 peptides (p≤0.05) corresponding to 9 proteins were observed; these changes were confirmed with immunohistochemistry. The protein abnormalities varied amongst nuclei, with the majority of variations in the raphe nuclei, hypoglossal and pyramids. The abnormal proteins are not related to a previously identified neurological disease pathway but consist of developmental neuronal/glial/axonal growth, cell metabolism, cyto-architecture and apoptosis components. This suggests that SIDS infants have abnormal neurological development in the raphe nuclei, hypoglossal and pyramids of the brainstem, which may contribute to the pathogenesis of SIDS. BIOLOGICAL SIGNIFICANCE This study is the first to perform an imaging mass spectrometry investigation in the human brainstem and also within sudden infant death syndrome (SIDS). LC MALDI and MALDI IMS identified 55 proteins based on 285 peptides in both control and SIDS tissue; with abnormal expression patterns present for 41/285 and 9/55 proteins in SIDS using IMS. The abnormal proteins are critical for neurological development; with the impairment supporting the hypothesis that SIDS may be due to delayed neurological maturation. The brainstem regions mostly affected included the raphe nuclei, hypoglossal and pyramids. This study highlights that basic cyto-architectural proteins are affected in SIDS and that abnormal expression of these proteins in other CNS disorders should be examined. KEY SENTENCES LC MALDI and MALDI IMS identified 55 proteins based on 285 peptides in both control and SIDS tissue. Abnormal expression patterns were present for 41/285 and 9/55 proteins in SIDS using IMS. Brainstem regions mostly affected included the raphe nuclei, hypoglossal and pyramids.
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Affiliation(s)
- Nicholas J Hunt
- Department of Medicine, Central Clinical School, University of Sydney, NSW, Australia; BOSCH Institute of Biomedical Research, University of Sydney, NSW, Australia
| | - Leo Phillips
- Hormones and Cancer Division, Kolling Institute of Medical Research, University of Sydney, Royal North Shore Hospital, NSW, Australia
| | - Karen A Waters
- Department of Medicine, Central Clinical School, University of Sydney, NSW, Australia; BOSCH Institute of Biomedical Research, University of Sydney, NSW, Australia; The Children's Hospital, Westmead, NSW 2145, Australia
| | - Rita Machaalani
- Department of Medicine, Central Clinical School, University of Sydney, NSW, Australia; BOSCH Institute of Biomedical Research, University of Sydney, NSW, Australia; The Children's Hospital, Westmead, NSW 2145, Australia.
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Sun RX, Luo L, Wu L, Wang RM, Zeng WF, Chi H, Liu C, He SM. pTop 1.0: A High-Accuracy and High-Efficiency Search Engine for Intact Protein Identification. Anal Chem 2016; 88:3082-90. [DOI: 10.1021/acs.analchem.5b03963] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Rui-Xiang Sun
- Key
Lab of Intelligent Information Processing of Chinese Academy of Sciences
(CAS), Institute of Computing Technology, CAS, Beijing 100190, China
| | - Lan Luo
- Key
Lab of Intelligent Information Processing of Chinese Academy of Sciences
(CAS), Institute of Computing Technology, CAS, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Long Wu
- Key
Lab of Intelligent Information Processing of Chinese Academy of Sciences
(CAS), Institute of Computing Technology, CAS, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui-Min Wang
- Key
Lab of Intelligent Information Processing of Chinese Academy of Sciences
(CAS), Institute of Computing Technology, CAS, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wen-Feng Zeng
- Key
Lab of Intelligent Information Processing of Chinese Academy of Sciences
(CAS), Institute of Computing Technology, CAS, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hao Chi
- Key
Lab of Intelligent Information Processing of Chinese Academy of Sciences
(CAS), Institute of Computing Technology, CAS, Beijing 100190, China
| | - Chao Liu
- Key
Lab of Intelligent Information Processing of Chinese Academy of Sciences
(CAS), Institute of Computing Technology, CAS, Beijing 100190, China
| | - Si-Min He
- Key
Lab of Intelligent Information Processing of Chinese Academy of Sciences
(CAS), Institute of Computing Technology, CAS, Beijing 100190, China
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Enrichment of phosphorylated peptides and proteins by selective precipitation methods. Bioanalysis 2015; 7:243-52. [PMID: 25587840 DOI: 10.4155/bio.14.281] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Protein phosphorylation is one of the most prominent post-translational modifications involved in the regulation of cellular processes. Fundamental understanding of biological processes requires appropriate bioanalytical methods for selectively enriching phosphorylated peptides and proteins. Most of the commonly applied enrichment approaches include chromatographic materials including Fe(3+)-immobilized metal-ion affinity chromatography or metal oxides. In the last years, the introduction of several non-chromatographic isolation technologies has increasingly attracted the interest of many scientists. Such approaches are based on the selective precipitation of phosphorylated peptides and proteins by applying various metal cations. The excellent performance of precipitation-based enrichment methods can be explained by the absence of any stationary phase, resin or sorbent, which usually leads to unspecific binding. This review provides an overview of recently published methods for the selective precipitation of phosphorylated peptides and proteins.
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Ait-Belkacem R, Berenguer C, Villard C, Ouafik L, Figarella-Branger D, Beck A, Chinot O, Lafitte D. Monitoring therapeutic monoclonal antibodies in brain tumor. MAbs 2015; 6:1385-93. [PMID: 25484065 DOI: 10.4161/mabs.34405] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Bevacizumab induces normalization of abnormal blood vessels, making them less leaky. By binding to vascular endothelial growth factor, it indirectly attacks the vascular tumor mass. The optimal delivery of targeted therapies including monoclonal antibodies or anti-angiogenesis drugs to the target tissue highly depends on the blood-brain barrier permeability. It is therefore critical to investigate how drugs effectively reach the tumor. In situ investigation of drug distribution could provide a better understanding of pharmacological agent action and optimize chemotherapies for solid tumors. We developed an imaging method coupled to protein identification using matrix-assisted laser desorption/ionization mass spectrometry. This approach monitored bevacizumab distribution within the brain structures, and especially within the tumor, without any labeling.
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Key Words
- 5 DAN, 1
- 5-diaminonaphtalene
- BBB, blood-brain barrier
- CRC, metastatic colorectal cancer
- CSF, cerebrospinal fluid; 1
- EMA, European Medicines Agency
- FDA, Food and Drug Administration
- GBM, glioblastoma multiforme
- IMS, imaging mass spectrometry
- ISD, in-source decay
- ITO, indium tin oxide
- LC-MS/MS, liquid chromatography coupled to tandem mass spectrometry
- MALDI imaging mass spectrometry
- MALDI, matrix-assisted laser desorption/ionization
- NSCLC, non-small cell lung cancer
- RMS, root mean square
- RP-HPLC, reversed phase high-performance liquid chromatography
- TOF, time of flight
- VEGF, vascular endothelial growth factor
- VEGFR, vascular endothelial growth factor receptor
- VH, variable domain of the heavy chain
- VL, variable domain of the light chain
- WHO, world health organization
- bevacizumab
- glioblastoma multiforme
- mAbs, monoclonal antibodies
- monoclonal antibodies
- pE, pyroglutamate
- palivizumab
- top down in source decay
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Affiliation(s)
- Rima Ait-Belkacem
- a Aix-Marseille Université Inserm ; CRO2 UMR S-911; Marseille , France
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Complementary PTM Profiling of Drug Response in Human Gastric Carcinoma by Immunoaffinity and IMAC Methods with Total Proteome Analysis. Proteomes 2015; 3:160-183. [PMID: 28248267 PMCID: PMC5217380 DOI: 10.3390/proteomes3030160] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 07/21/2015] [Accepted: 07/22/2015] [Indexed: 01/14/2023] Open
Abstract
Gaining insight into normal cellular signaling and disease biology is a critical goal of proteomic analyses. The ability to perform these studies successfully to extract the maximum value and discovery of biologically relevant candidate biomarkers is therefore of primary importance. Many successful studies in the past have focused on total proteome analysis (changes at the protein level) combined with phosphorylation analysis by metal affinity enrichment (changes at the PTM level). Here, we use the gastric carcinoma cell line MKN-45 treated with the c-Met inhibitor SU11274 and PKC inhibitor staurosporine to investigate the most efficient and most comprehensive strategies for both total protein and PTM analysis. Under the conditions used, total protein analysis yielded few changes in response to either compound, while analysis of phosphorylation identified thousands of sites that changed differentially between the two treatments. Both metal affinity and antibody-based enrichments were used to assess phosphopeptide changes, and the data generated by the two methods was largely complementary (non-overlapping). Label-free quantitation of peptide peak abundances was used to accurately determine fold-changes between control and treated samples. Protein interaction network analysis allowed the data to be placed in a biologically relevant context, and follow-up validation of selected findings confirmed the accuracy of the proteomic data. Together, this study provides a framework for start-to-finish proteomic analysis of any experimental system under investigation to maximize the value of the proteomic study and yield the best chance for uncovering actionable target candidates.
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Dowling P, Pollard D, Larkin A, Henry M, Meleady P, Gately K, O'Byrne K, Barr MP, Lynch V, Ballot J, Crown J, Moriarty M, O'Brien E, Morgan R, Clynes M. Abnormal levels of heterogeneous nuclear ribonucleoprotein A2B1 (hnRNPA2B1) in tumour tissue and blood samples from patients diagnosed with lung cancer. MOLECULAR BIOSYSTEMS 2014; 11:743-52. [PMID: 25483567 DOI: 10.1039/c4mb00384e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Lung cancer is the second most common type of cancer in the world and is the most common cause of cancer-related death in both men and women. Research into causes, prevention and treatment of lung cancer is ongoing and much progress has been made recently in these areas, however survival rates have not significantly improved. Therefore, it is essential to develop biomarkers for early diagnosis of lung cancer, prediction of metastasis and evaluation of treatment efficiency, as well as using these molecules to provide some understanding about tumour biology and translate highly promising findings in basic science research to clinical application. In this investigation, two-dimensional difference gel electrophoresis and mass spectrometry were initially used to analyse conditioned media from a panel of lung cancer and normal bronchial epithelial cell lines. Significant proteins were identified with heterogeneous nuclear ribonucleoprotein A2B1 (hnRNPA2B1), pyruvate kinase M2 isoform (PKM2), Hsc-70 interacting protein and lactate dehydrogenase A (LDHA) selected for analysis in serum from healthy individuals and lung cancer patients. hnRNPA2B1, PKM2 and LDHA were found to be statistically significant in all comparisons. Tissue analysis and knockdown of hnRNPA2B1 using siRNA subsequently demonstrated both the overexpression and potential role for this molecule in lung tumorigenesis. The data presented highlights a number of in vitro derived candidate biomarkers subsequently verified in patient samples and also provides some insight into their roles in the complex intracellular mechanisms associated with tumour progression.
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Affiliation(s)
- Paul Dowling
- National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
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Hildonen S, Halvorsen TG, Reubsaet L. Why less is more when generating tryptic peptides in bottom-up proteomics. Proteomics 2014; 14:2031-41. [DOI: 10.1002/pmic.201300479] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 06/11/2014] [Accepted: 07/10/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Siri Hildonen
- Department of Pharmaceutical Chemistry; School of Pharmacy; University of Oslo; Oslo Norway
| | | | - Léon Reubsaet
- Department of Pharmaceutical Chemistry; School of Pharmacy; University of Oslo; Oslo Norway
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Wang S, Chen S, Wang J, Xu P, Luo Y, Nie Z, Du W. Interface solution isoelectric focusing with in situ MALDI-TOF mass spectrometry. Electrophoresis 2014; 35:2528-33. [DOI: 10.1002/elps.201400083] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/19/2014] [Accepted: 04/21/2014] [Indexed: 01/03/2023]
Affiliation(s)
- Shujun Wang
- Department of Chemistry; Renmin University of China; Beijing China
- State Key Laboratory of Microbial Resources; Institute of Microbiology; Chinese Academy of Sciences; Beijing China
| | - Suming Chen
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems; Institute of Chemistry; Chinese Academy of Sciences; Beijing China
| | - Jianing Wang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems; Institute of Chemistry; Chinese Academy of Sciences; Beijing China
| | - Peng Xu
- State Key Laboratory of Microbial Resources; Institute of Microbiology; Chinese Academy of Sciences; Beijing China
| | - Yuanming Luo
- State Key Laboratory of Microbial Resources; Institute of Microbiology; Chinese Academy of Sciences; Beijing China
| | - Zongxiu Nie
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems; Institute of Chemistry; Chinese Academy of Sciences; Beijing China
| | - Wenbin Du
- State Key Laboratory of Microbial Resources; Institute of Microbiology; Chinese Academy of Sciences; Beijing China
- Department of Chemistry; Renmin University of China; Beijing China
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Chen L, Wang N, Sun D, Li L. Microwave-assisted acid hydrolysis of proteins combined with peptide fractionation and mass spectrometry analysis for characterizing protein terminal sequences. J Proteomics 2014; 100:68-78. [PMID: 24145141 DOI: 10.1016/j.jprot.2013.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 09/24/2013] [Accepted: 10/09/2013] [Indexed: 12/17/2022]
Abstract
We report a relatively simple mass spectrometric technique for characterizing the terminal amino acid sequences of proteins. It is based on the use of microwave-assisted acid hydrolysis (MAAH) with 3M HCl to hydrolyze a protein into polypeptide ladders with varying sizes of up to the molecular mass of the protein. The hydrolysate is then fractionated by isocratic reversed phase liquid chromatography (RPLC) to produce a low-mass-peptide fraction mainly consisting of the terminal peptides. This fraction is subjected to LC tandem mass spectrometry (MS/MS) analysis to generate the terminal peptide sequence information. Using bovine serum albumin as an example, it is shown that more than 10 terminal peptides of each end could be identified using as little as 0.5μg (7.5pmol) of protein. This method was applied for the characterization of a recombinant protein (mCherry with an additional sequence tag added to the N-terminal for expression and purification) and its truncated form (mCherry treated with enterokinase to cleave off the tag). Sequence errors and unexpected by-products with different terminal sequences were determined from these two samples, illustrating that this method of HCl MAAH with peptide fractionation and LC-MS/MS analysis should be useful for detailed characterization of protein terminal sequences. BIOLOGICAL SIGNIFICANCE Protein terminal truncation or modification plays an important role in determining the biological functions of a protein. Detailed characterization of protein terminal sequences is critical in biological studies as well as in the development and quality control of protein-based therapeutics and vaccines. In this work, we report a relatively simple method for analyzing protein terminal sequences based on microwave-assisted acid hydrolysis to generate the peptide ladder of a protein, liquid chromatography fractionation of the resultant ladder to collect the low-mass-peptide fraction which mainly contains terminal peptides, and LC-ESI MS/MS sequencing of the collected peptides. This article is part of a Special Issue entitled: Can Proteomics Fill the Gap Between Genomics and Phenotypes?
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Affiliation(s)
- Lu Chen
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Nan Wang
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Difei Sun
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Liang Li
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada.
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Wang K, Huang C, Nice EC. Proteomics, genomics and transcriptomics: their emerging roles in the discovery and validation of colorectal cancer biomarkers. Expert Rev Proteomics 2014; 11:179-205. [PMID: 24611605 DOI: 10.1586/14789450.2014.894466] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Colorectal cancer (CRC) is the second most common cancer in females and the third in males. Since CRC is often diagnosed at an advanced stage when prognosis is poor, identification of biomarkers for early diagnosis is urgently required. Recent advances in proteomics, genomics and transcriptomics have facilitated high-throughput profiling of data generated from CRC-related genes and proteins, providing a window of information for biomarker discovery and validation. However, transfer of candidate biomarkers from bench to bedside remains a dilemma. In this review, we will discuss emerging proteomic technologies and highlight various sample types utilized for proteomics-based identification of CRC biomarkers. Moreover, recent breakthroughs in genomics and transcriptomics for the identification of CRC biomarkers, with particular emphasis on the merits of emerging methylomic and miRNAomic strategies, will be discussed. Integration of proteomics, genomics and transcriptomics will facilitate the discovery and validation of CRC biomarkers leading to the emergence of personalized medicine.
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Affiliation(s)
- Kui Wang
- The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University , Chengdu, 610041 , P.R. China
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Miao J, Niu J, Wang K, Xiao Y, Du Y, Zhou L, Duan L, Li S, Yang G, Chen L, Tong M, Miao Y. Heat shock factor 2 levels are associated with the severity of ulcerative colitis. PLoS One 2014; 9:e88822. [PMID: 24533153 PMCID: PMC3923051 DOI: 10.1371/journal.pone.0088822] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 01/12/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND AIMS The morbidity of ulcerative colitis (UC) is increasing in China every year. In addition, there is a lack of accurate diagnostic indices with which to evaluate the activity of the disease. The aim of this study was to identify UC-associated proteins as biomarkers for the diagnosis, and objective assessment of disease activity. METHODS Differential expression of serum proteins from UC patients compared to normal controls was analyzed by two-dimensional electrophoresis (2-DE) and matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF-MS). The expression of heat shock factor 2(HSF2)in colonic mucosa in Crohn's disease, Behcet's disease, ulcerative colitis, intestinal tuberculosis, infective enteritis, intestinal lymphoma, and normal controls was investigated by immunohistochemistry (IHC). The expression of the HSF2 in colonic mucosa of UC subjects with varying severity of disease was measured by real time-PCR and Western Blots. The expression of HSF2 was inhibited by HSF2 small interfering RNA (siRNA) transfection in Caco-2 cells. The concentrations of HSF2, IL-1β, and TNF-α in serum and IL-1β, and TNF-α in the supernatants of transfected Caco-2 cells were determined by ELISA. RESULTS HSF2 was differentially expressed in UC patients compared to normal controls. HSF2 expression was significantly higher in the intestinal mucosa of UC patients compared to other six groups. The results of immunohistochemistry, real time-PCR, Western Blots, and ELISA showed that the expression of HSF2 increased in parallel with the severity of UC. The serum concentration of HSF2 also positively correlated with levels of IL-1β and TNF-α. After down-regulation expression of HSF2 in Caco-2 cells by RNA interference, the productions of IL-1β and TNF-α stimulated by lipopolysaccharide (LPS) increased dramatically. CONCLUSIONS HSF2 appears to be a potential novel molecular marker for UC activity, and may provide a basis for studies on the pathogenesis and novel therapeutic targets for UC.
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Affiliation(s)
- Jiarong Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Junkun Niu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Kunhua Wang
- Department of General Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yuliang Xiao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yan Du
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Lifeng Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Liping Duan
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Shuan Li
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Gang Yang
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Lifang Chen
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Mingxia Tong
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
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Ait-Belkacem R, Berenguer C, Villard C, Ouafik L, Figarella-Branger D, Chinot O, Lafitte D. MALDI imaging and in-source decay for top-down characterization of glioblastoma. Proteomics 2014; 14:1290-301. [PMID: 24376047 DOI: 10.1002/pmic.201300329] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 09/27/2013] [Accepted: 10/04/2013] [Indexed: 01/15/2023]
Abstract
Glioblastoma multiforme is one of the most common intracranial tumors encountered in adults. This tumor of very poor prognosis is associated with a median survival rate of approximately 14 months. One of the major issues to better understand the biology of these tumors and to optimize the therapy is to obtain the molecular structure of glioblastoma. MALDI molecular imaging enables location of molecules in tissues without labeling. However, molecular identification in situ is not an easy task. In this paper, we used MALDI imaging coupled to in-source decay to characterize markers of this pathology. We provided MALDI molecular images up to 30 μm spatial resolution of mouse brain tissue sections. MALDI images showed the heterogeneity of the glioblastoma. In the various zones and at various development stages of the tumor, using our top-down strategy, we identified several proteins. These proteins play key roles in tumorigenesis. Particular attention was given to the necrotic area with characterization of hemorrhage, one of the most important poor prognosis factors in glioblastoma.
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Iimuro R, Takayama M. Analysis of Flexibility of Proteins by means of Positive and Negative Ion MALDI In-Source Decay Mass Spectrometry. Mass Spectrom (Tokyo) 2014; 3:S0023. [PMID: 26819895 PMCID: PMC4622517 DOI: 10.5702/massspectrometry.s0023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 11/19/2013] [Indexed: 02/03/2023] Open
Abstract
The amino acid residues susceptible to in-source decay (ISD) in matrix-assisted laser desorption/ionization (MALDI) mass spectrometry have been identified from both positive and negative ion ISD spectra of cytochrome c, myoglobin, thioredoxin and bovine serum albumin. Backbone cleavages at the N-Cα bonds of Xxx-Asp, Xxx-Asn, Xxx-Cys, and Gly-Xxx residues gave discontinuous intense peaks of c-ions, independent of positive and negative ion mode. The intensity values for c-ions, Int(c), were defined to allow estimation of the discontinuous intense peaks of c-ions. The identities of the high intensity value residues Asp, Asn, Cys, and Gly were compared with those identified using other measures of flexibility such as the B-factor, turn preferential factor and protection factor. The comparison indicates that Asp, Asn, and Gly residues are common to all measures. Thus, the intensity values of c-ions can be adopted as a measure of protein flexibility.
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Affiliation(s)
- Ryunosuke Iimuro
- Graduate School of Nanobioscience, Mass Spectrometry Laboratory, Yokohama City University
| | - Mitsuo Takayama
- Graduate School of Nanobioscience, Mass Spectrometry Laboratory, Yokohama City University
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Takayama M, Sekiya S, Iimuro R, Iwamoto S, Tanaka K. Selective and nonselective cleavages in positive and negative CID of the fragments generated from in-source decay of intact proteins in MALDI-MS. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:120-131. [PMID: 24135807 DOI: 10.1007/s13361-013-0756-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 09/13/2013] [Accepted: 09/16/2013] [Indexed: 06/02/2023]
Abstract
Selective and nonselective cleavages in ion trap low-energy collision-induced dissociation (CID) experiments of the fragments generated from in-source decay (ISD) with matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) of intact proteins are described in both positive and negative ion modes. The MALDI-ISD spectra of the proteins demonstrate common, discontinuous, abundant c- and z'-ions originating from cleavage at the N-Cα bond of Xxx-Asp/Asn and Gly-Xxx residues in both positive- and negative-ion modes. The positive ion CID of the c- and z'-ions resulted in product ions originating from selective cleavage at Asp-Xxx, Glu-Xxx and Cys-Xxx residues. Nonselective cleavage product ions rationalized by the mechanism of a "mobile proton" are also observed in positive ion CID spectra. Negative ion CID of the ISD fragments results in complex product ions accompanied by the loss of neutrals from b-, c-, and y-ions. The most characteristic feature of negative ion CID is selective cleavage of the peptide bonds of acidic residues, Xxx-Asp/Glu/Cys. A definite influence of α-helix on the CID product ions was not obtained. However, the results from positive ion and negative ion CID of the MALDI-ISD fragments that may have long α-helical domains suggest that acidic residues in helix-free regions tend to degrade more than those in helical regions.
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Affiliation(s)
- Mitsuo Takayama
- Graduate School in Nanobioscience, Mass Spectrometry Laboratory, Yokohama City University, Kanazawa-ku, Yokohama, Japan,
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Nicolardi S, Giera M, Kooijman P, Kraj A, Chervet JP, Deelder AM, van der Burgt YEM. On-line electrochemical reduction of disulfide bonds: improved FTICR-CID and -ETD coverage of oxytocin and hepcidin. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:1980-7. [PMID: 24018861 PMCID: PMC3837188 DOI: 10.1007/s13361-013-0725-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 07/25/2013] [Accepted: 07/25/2013] [Indexed: 05/21/2023]
Abstract
Particularly in the field of middle- and top-down peptide and protein analysis, disulfide bridges can severely hinder fragmentation and thus impede sequence analysis (coverage). Here we present an on-line/electrochemistry/ESI-FTICR-MS approach, which was applied to the analysis of the primary structure of oxytocin, containing one disulfide bridge, and of hepcidin, containing four disulfide bridges. The presented workflow provided up to 80% (on-line) conversion of disulfide bonds in both peptides. With minimal sample preparation, such reduction resulted in a higher number of peptide backbone cleavages upon CID or ETD fragmentation, and thus yielded improved sequence coverage. The cycle times, including electrode recovery, were rapid and, therefore, might very well be coupled with liquid chromatography for protein or peptide separation, which has great potential for high-throughput analysis.
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Affiliation(s)
- Simone Nicolardi
- Leiden University Medical Center (LUMC), Center for Proteomics and Metabolomics, 2300 RC Leiden, The Netherlands
| | - Martin Giera
- Leiden University Medical Center (LUMC), Center for Proteomics and Metabolomics, 2300 RC Leiden, The Netherlands
| | - Pieter Kooijman
- Leiden University Medical Center (LUMC), Center for Proteomics and Metabolomics, 2300 RC Leiden, The Netherlands
| | | | | | - André M. Deelder
- Leiden University Medical Center (LUMC), Center for Proteomics and Metabolomics, 2300 RC Leiden, The Netherlands
| | - Yuri E. M. van der Burgt
- Leiden University Medical Center (LUMC), Center for Proteomics and Metabolomics, 2300 RC Leiden, The Netherlands
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Ohlendieck K. Proteomic identification of biomarkers of skeletal muscle disorders. Biomark Med 2013; 7:169-86. [PMID: 23387498 DOI: 10.2217/bmm.12.96] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Disease-specific biomarkers play a central diagnostic and therapeutic role in muscle pathology. Serum levels of a variety of muscle-derived enzymes are routinely used for the detection of muscle damage in diagnostic procedures, as well as for the monitoring of physical training status in sports medicine. Over the last few years, the systematic application of mass spectrometry-based proteomics for studying skeletal muscle degeneration has greatly expanded the range of muscle biomarkers, including new fiber-associated proteins involved in muscle transformation, muscular atrophy, muscular dystrophy, motor neuron disease, inclusion body myositis, myotonia, hypoxia, diabetes, obesity and sarcopenia of old age. These mass spectrometric studies have clearly established skeletal muscle proteomics as a reliable method for the identification of novel indicators of neuromuscular diseases.
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Affiliation(s)
- Kay Ohlendieck
- Muscle Biology Laboratory, Department of Biology, National University of Ireland, Maynooth, County Kildare, Ireland.
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Carberry S, Zweyer M, Swandulla D, Ohlendieck K. Comparative proteomic analysis of the contractile-protein-depleted fraction from normal versus dystrophic skeletal muscle. Anal Biochem 2013; 446:108-15. [PMID: 23954569 DOI: 10.1016/j.ab.2013.08.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/03/2013] [Accepted: 08/06/2013] [Indexed: 01/16/2023]
Abstract
In basic and applied myology, gel-based proteomics is routinely used for studying global changes in the protein constellation of contractile fibers during myogenesis, physiological adaptations, neuromuscular degeneration, and the natural aging process. Since the main proteins of the actomyosin apparatus and its auxiliary sarcomeric components often negate weak signals from minor muscle proteins during proteomic investigations, we have here evaluated whether a simple prefractionation step can be employed to eliminate certain aspects of this analytical obstacle. To remove a large portion of highly abundant contractile proteins from skeletal muscle homogenates without the usage of major manipulative steps, differential centrifugation was used to decisively reduce the sample complexity of crude muscle tissue extracts. The resulting protein fraction was separated by two-dimensional gel electrophoresis, and 2D-landmark proteins were identified by mass spectrometry. To evaluate the suitability of the contractile-protein-depleted fraction for comparative proteomics, normal versus dystrophic muscle preparations were examined. The mass spectrometric analysis of differentially expressed proteins, as determined by fluorescence difference in-gel electrophoresis, identified 10 protein species in dystrophic mdx hindlimb muscles. Interesting new biomarker candidates included Hsp70, transferrin, and ferritin, whereby their altered concentration levels in dystrophin-deficient muscle were confirmed by immunoblotting.
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Affiliation(s)
- Steven Carberry
- Department of Biology, National University of Ireland, Maynooth, Kildare, Ireland
| | - Margit Zweyer
- Department of Physiology II, University of Bonn, D-53115 Bonn, Germany
| | - Dieter Swandulla
- Department of Physiology II, University of Bonn, D-53115 Bonn, Germany
| | - Kay Ohlendieck
- Department of Biology, National University of Ireland, Maynooth, Kildare, Ireland.
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Switzar L, Giera M, Niessen WMA. Protein Digestion: An Overview of the Available Techniques and Recent Developments. J Proteome Res 2013; 12:1067-77. [DOI: 10.1021/pr301201x] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Linda Switzar
- AIMMS Division of BioMolecular
Analysis, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV, Amsterdam, The Netherlands
| | - Martin Giera
- Division of Molecular Cell Physiology,
Faculty of Earth and Life Sciences, VU University Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands
- Biomolecular Mass Spectrometry
Unit, Department of Parasitology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Wilfried M. A. Niessen
- AIMMS Division of BioMolecular
Analysis, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV, Amsterdam, The Netherlands
- hyphen MassSpec, de Wetstraat 8, 2332 XT Leiden, The Netherlands
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Fernando H, Wiktorowicz JE, Soman KV, Kaphalia BS, Khan MF, Ansari GAS. Liver proteomics in progressive alcoholic steatosis. Toxicol Appl Pharmacol 2013; 266:470-80. [PMID: 23200777 PMCID: PMC3565568 DOI: 10.1016/j.taap.2012.11.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 11/15/2012] [Accepted: 11/16/2012] [Indexed: 02/08/2023]
Abstract
Fatty liver is an early stage of alcoholic and nonalcoholic liver disease (ALD and NALD) that progresses to steatohepatitis and other irreversible conditions. In this study, we identified proteins that were differentially expressed in the livers of rats fed 5% ethanol in a Lieber-DeCarli diet daily for 1 and 3 months by discovery proteomics (two-dimensional gel electrophoresis and mass spectrometry) and non-parametric modeling (Multivariate Adaptive Regression Splines). Hepatic fatty infiltration was significantly higher in ethanol-fed animals as compared to controls, and more pronounced at 3 months of ethanol feeding. Discovery proteomics identified changes in the expression of proteins involved in alcohol, lipid, and amino acid metabolism after ethanol feeding. At 1 and 3 months, 12 and 15 different proteins were differentially expressed. Of the identified proteins, down regulation of alcohol dehydrogenase (-1.6) at 1 month and up regulation of aldehyde dehydrogenase (2.1) at 3 months could be a protective/adaptive mechanism against ethanol toxicity. In addition, betaine-homocysteine S-methyltransferase 2 a protein responsible for methionine metabolism and previously implicated in fatty liver development was significantly up regulated (1.4) at ethanol-induced fatty liver stage (1 month) while peroxiredoxin-1 was down regulated (-1.5) at late fatty liver stage (3 months). Nonparametric analysis of the protein spots yielded fewer proteins and narrowed the list of possible markers and identified d-dopachrome tautomerase (-1.7, at 3 months) as a possible marker for ethanol-induced early steatohepatitis. The observed differential regulation of proteins have potential to serve as biomarker signature for the detection of steatosis and its progression to steatohepatitis once validated in plasma/serum.
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Affiliation(s)
- Harshica Fernando
- Department of Pathology, The University of Texas Medical Branch, Galveston, TX, 77555
| | - John E. Wiktorowicz
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, 77555
| | - Kizhake V. Soman
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, 77555
| | - Bhupendra S. Kaphalia
- Department of Pathology, The University of Texas Medical Branch, Galveston, TX, 77555
| | - M. Firoze Khan
- Department of Pathology, The University of Texas Medical Branch, Galveston, TX, 77555
| | - G. A. Shakeel Ansari
- Department of Pathology, The University of Texas Medical Branch, Galveston, TX, 77555
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Fully automated chip-based nanoelectrospray combined with electron transfer dissociation for high throughput top-down proteomics. OPEN CHEM 2013. [DOI: 10.2478/s11532-012-0130-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
AbstractThe conventional protocol for protein identification by electrospray ionization mass spectrometry (MS) is based on enzymatic digestion which renders peptides to be analyzed by liquid chromatography-MS and collision-induced dissociation (CID) multistage MS, in the so-called bottom-up approach. Though this method has brought a significant progress to the field, many limitations, among which, the low throughput and impossibility to characterize in detail posttranslational modifications in terms of site(s) and structure, were reported. Therefore, the research is presently focused on the development of procedures for efficient top-down fragmentation of intact protein ions. In this context, we developed here an approach combining fully automated chip-based-nanoelectrospray ionisation (nanoESI), performed on a NanoMate robot, with electron transfer dissociation (ETD) for peptide and top-down protein sequencing and identification. This advanced analytical platform, integrating robotics, microfluidics technology, ETD and alternate ETD/CID, was tested and found ideally suitable for structural investigation of peptides and modified/functionalized peptides as well as for top-down analysis of medium size proteins by tandem MS experiments of significantly increased throughput and sensitivity. The obtained results indicate that NanoMate-ETD and ETD/CID may represent a viable alternative to the current MS strategies, with potential to develop into a method of routine use for high throughput top-down proteomics.
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The Urine Proteome as a Radiation Biodosimeter. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 990:87-100. [DOI: 10.1007/978-94-007-5896-4_5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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40
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Melvin Blaze MT, Aydin B, Carlson R, Hanley L. Identification and imaging of peptides and proteins on Enterococcus faecalis biofilms by matrix assisted laser desorption ionization mass spectrometry. Analyst 2012; 137:5018-25. [PMID: 22962657 PMCID: PMC3654527 DOI: 10.1039/c2an35922g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The heptapeptide ARHPHPH was identified from biofilms and planktonic cultures of two different strains of Enterococcus faecalis, V583 and ATCC 29212, using matrix assisted laser desorption ionization mass spectrometry (MALDI-MS). ARHPHPH was also imaged at the boundary of cocultured, adjacent E. faecalis and Escherichia coli (ATCC 25922) biofilms, appearing only on the E. faecalis side. ARHPHPH was proteolyzed from κ-casein, a component in the growth media, by E. faecalis microbes. Additionally, top down and bottom up proteomic approaches were combined to identify and spatially locate multiple proteins within intact E. faecalis V583 biofilms by MALDI-MS. The resultant tandem MS data were searched against the NCBInr E. faecalis V583 database to identify thirteen cytosolic and membrane proteins which have functional association with the cell surface. Two of these proteins, enolase and GAPDH, are glycolytic enzymes known to display multiple functions in bacterial virulence in related bacterial strains. This work illustrates a powerful approach for discovering and localizing multiple peptides and proteins within intact biofilms.
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Affiliation(s)
- M. T. Melvin Blaze
- Department of Chemistry, MC 111, University of Illinois at Chicago, Chicago, IL 60607-7061
| | - Berdan Aydin
- Department of Chemistry, MC 111, University of Illinois at Chicago, Chicago, IL 60607-7061
| | - Ross Carlson
- Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717
| | - Luke Hanley
- Department of Chemistry, MC 111, University of Illinois at Chicago, Chicago, IL 60607-7061
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Slattery M, Ankisetty S, Corrales J, Marsh-Hunkin KE, Gochfeld DJ, Willett KL, Rimoldi JM. Marine proteomics: a critical assessment of an emerging technology. JOURNAL OF NATURAL PRODUCTS 2012; 75:1833-1877. [PMID: 23009278 DOI: 10.1021/np300366a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The application of proteomics to marine sciences has increased in recent years because the proteome represents the interface between genotypic and phenotypic variability and, thus, corresponds to the broadest possible biomarker for eco-physiological responses and adaptations. Likewise, proteomics can provide important functional information regarding biosynthetic pathways, as well as insights into mechanism of action, of novel marine natural products. The goal of this review is to (1) explore the application of proteomics methodologies to marine systems, (2) assess the technical approaches that have been used, and (3) evaluate the pros and cons of this proteomic research, with the intent of providing a critical analysis of its future roles in marine sciences. To date, proteomics techniques have been utilized to investigate marine microbe, plant, invertebrate, and vertebrate physiology, developmental biology, seafood safety, susceptibility to disease, and responses to environmental change. However, marine proteomics studies often suffer from poor experimental design, sample processing/optimization difficulties, and data analysis/interpretation issues. Moreover, a major limitation is the lack of available annotated genomes and proteomes for most marine organisms, including several "model species". Even with these challenges in mind, there is no doubt that marine proteomics is a rapidly expanding and powerful integrative molecular research tool from which our knowledge of the marine environment, and the natural products from this resource, will be significantly expanded.
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Affiliation(s)
- Marc Slattery
- Department of Pharmacognosy, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, USA.
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42
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Untargeted screening of urinary peptides with liquid chromatography coupled to hybrid linear-ion trap tandem mass spectrometry. J Chromatogr A 2012; 1259:138-47. [PMID: 22537605 DOI: 10.1016/j.chroma.2012.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 03/28/2012] [Accepted: 04/02/2012] [Indexed: 01/01/2023]
Abstract
We formerly developed and applied a liquid chromatography coupled with hybrid triple quadrupole-linear ion trap mass spectrometry technique for the detection and identification of exogenous compounds in clinical and forensic toxicology. In this study, we aimed to adapt this technique to the detection and identification of the constituents of the urinary peptidome. After solid-phase extraction, separation was performed using gradient reversed-phase liquid chromatography. The mass spectrometer was operated in the information-dependent acquisition mode, switching between: a survey scan acquired in the enhanced multi-charged scan mode with dynamic subtraction of background noise; and two dependent scans obtained in the enhanced product ion scan mode. The results obtained show that: (i) the present procedure is able to detect and identify peptides which, together with their inferred parent proteins, are similar to those referenced in the related literature; (ii) the structure of some peptides can generally be resolved from their enhanced product ion spectra; and (iii) confirmation of the sequences proposed through library search by in silico verification of the fragments observed in the enhanced product ion spectra seems to be indispensable to avoid misinterpretations.
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43
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Mass spectrometry imaging is moving toward drug protein co-localization. Trends Biotechnol 2012; 30:466-74. [DOI: 10.1016/j.tibtech.2012.05.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Revised: 05/23/2012] [Accepted: 05/24/2012] [Indexed: 12/20/2022]
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Abstract
Biomarkers are of tremendous importance for the prediction, diagnosis, and observation of the therapeutic success of common complex multifactorial metabolic diseases, such as type II diabetes and obesity. However, the predictive power of the traditional biomarkers used (eg, plasma metabolites and cytokines, body parameters) is apparently not sufficient for reliable monitoring of stage-dependent pathogenesis starting with the healthy state via its initiation and development to the established disease and further progression to late clinical outcomes. Moreover, the elucidation of putative considerable differences in the underlying pathogenetic pathways (eg, related to cellular/tissue origin, epigenetic and environmental effects) within the patient population and, consequently, the differentiation between individual options for disease prevention and therapy - hallmarks of personalized medicine - plays only a minor role in the traditional biomarker concept of metabolic diseases. In contrast, multidimensional and interdependent patterns of genetic, epigenetic, and phenotypic markers presumably will add a novel quality to predictive values, provided they can be followed routinely along the complete individual disease pathway with sufficient precision. These requirements may be fulfilled by small membrane vesicles, which are so-called exosomes and microvesicles (EMVs) that are released via two distinct molecular mechanisms from a wide variety of tissue and blood cells into the circulation in response to normal and stress/pathogenic conditions and are equipped with a multitude of transmembrane, soluble and glycosylphosphatidylinositol-anchored proteins, mRNAs, and microRNAs. Based on the currently available data, EMVs seem to reflect the diverse functional and dysfunctional states of the releasing cells and tissues along the complete individual pathogenetic pathways underlying metabolic diseases. A critical step in further validation of EMVs as biomarkers will rely on the identification of unequivocal correlations between critical disease states and specific EMV signatures, which in future may be determined in rapid and convenient fashion using nanoparticle-driven biosensors.
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Affiliation(s)
- Günter Müller
- Department of Biology I, Genetics, Ludwig-Maximilians University Munich, Biocenter, Munich, Germany
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45
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Direct detection of peptides and proteins on a microfluidic platform with MALDI mass spectrometry. Anal Bioanal Chem 2012; 404:1681-9. [DOI: 10.1007/s00216-012-6257-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 07/03/2012] [Accepted: 07/09/2012] [Indexed: 12/27/2022]
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46
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Abstract
The exposome concept promotes use of omic tools for discovering biomarkers of exposure and biomarkers of disease in studies of diseased and healthy populations. A two-stage scheme is presented for profiling omic features in serum to discover molecular biomarkers and then for applying these biomarkers in follow-up studies. The initial component, referred to as an exposome-wide-association study (EWAS), employs metabolomics and proteomics to interrogate the serum exposome and, ultimately, to identify, validate and differentiate biomarkers of exposure and biomarkers of disease. Follow-up studies employ knowledge-driven designs to explore disease causality, prevention, diagnosis, prognosis and treatment.
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Affiliation(s)
- Stephen M Rappaport
- Center for Exposure Biology, School of Public Health, University of California, Berkeley, CA 94720-7356, USA.
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47
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Sellami L, Belgacem O, Villard C, Openshaw ME, Barbier P, Lafitte D. In-Source Decay and Pseudo Tandem Mass Spectrometry Fragmentation Processes of Entire High Mass Proteins on a Hybrid Vacuum Matrix-Assisted Laser Desorption Ionization-Quadrupole Ion-Trap Time-of-Flight Mass Spectrometer. Anal Chem 2012; 84:5180-5. [DOI: 10.1021/ac300072b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Lyna Sellami
- Aix-Marseille University, UMR 911 INSERM CRO2, 13385 Marseille, France
| | | | - Claude Villard
- Aix-Marseille University, UMR 911 INSERM CRO2, 13385 Marseille, France
| | | | - Pascale Barbier
- Aix-Marseille University, UMR 911 INSERM CRO2, 13385 Marseille, France
| | - Daniel Lafitte
- Aix-Marseille University, UMR 911 INSERM CRO2, 13385 Marseille, France
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Stokes MP, Farnsworth CL, Moritz A, Silva JC, Jia X, Lee KA, Guo A, Polakiewicz RD, Comb MJ. PTMScan direct: identification and quantification of peptides from critical signaling proteins by immunoaffinity enrichment coupled with LC-MS/MS. Mol Cell Proteomics 2012; 11:187-201. [PMID: 22322096 DOI: 10.1074/mcp.m111.015883] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Proteomic studies of post-translational modifications by metal affinity or antibody-based methods often employ data-dependent analysis, providing rich data sets that consist of randomly sampled identified peptides because of the dynamic response of the mass spectrometer. This can complicate the primary goal of programs for drug development, mutational analysis, and kinase profiling studies, which is to monitor how multiple nodes of known, critical signaling pathways are affected by a variety of treatment conditions. Cell Signaling Technology has developed an immunoaffinity-based LC-MS/MS method called PTMScan Direct for multiplexed analysis of these important signaling proteins. PTMScan Direct enables the identification and quantification of hundreds of peptides derived from specific proteins in signaling pathways or specific protein types. Cell lines, tissues, or xenografts can be used as starting material. PTMScan Direct is compatible with both SILAC and label-free quantification. Current PTMScan Direct reagents target key nodes of many signaling pathways (PTMScan Direct: Multipathway), serine/threonine kinases, tyrosine kinases, and the Akt/PI3K pathway. Validation of each reagent includes score filtering of MS/MS assignments, filtering by identification of peptides derived from expected targets, identification of peptides homologous to expected targets, minimum signal intensity of peptide ions, and dependence upon the presence of the reagent itself compared with a negative control. The Multipathway reagent was used to study sensitivity of human cancer cell lines to receptor tyrosine kinase inhibitors and showed consistent results with previously published studies. The Ser/Thr kinase reagent was used to compare relative levels of kinase-derived phosphopeptides in mouse liver, brain, and embryo, showing tissue-specific activity of many kinases including Akt and PKC family members. PTMScan Direct will be a powerful quantitative method for elucidation of changes in signaling in a wide array of experimental systems, combining the specificity of traditional biochemical methods with the high number of data points and dynamic range of proteomic methods.
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Debois D, Smargiasso N, Demeure K, Asakawa D, Zimmerman TA, Quinton L, De Pauw E. MALDI in-source decay, from sequencing to imaging. Top Curr Chem (Cham) 2012; 331:117-41. [PMID: 22976457 DOI: 10.1007/128_2012_363] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Matrix-assisted laser desorption/ionization (MALDI) is now a mature method allowing the identification and, more challenging, the quantification of biopolymers (proteins, nucleic acids, glycans, etc). MALDI spectra show mostly intact singly charged ions. To obtain fragments, the activation of singly charged precursors is necessary, but not efficient above 3.5 kDa, thus making MALDI MS/MS difficult for large species. In-source decay (ISD) is a prompt fragmentation reaction that can be induced thermally or by radicals. As fragments are formed in the source, precursor ions cannot be selected; however, the technique is not limited by the mass of the analyzed compounds and pseudo MS3 can be performed on intense fragments. The discovery of new matrices that enhance the ISD yield, combined with the high sensitivity of MALDI mass spectrometers, and software development, opens new perspectives. We first review the mechanisms involved in the ISD processes, then discuss ISD applications like top-down sequencing and post-translational modifications (PTMs) studies, and finally review MALDI-ISD tissue imaging applications.
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Affiliation(s)
- Delphine Debois
- Mass Spectrometry Laboratory, GIGA-R, Department of Chemistry, University of Liège, Allée de la Chimie 3, 4000, Liège, Belgium
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Bystrom CE. The Analysis of Native Proteins and Peptides in the Clinical Lab Using Mass Spectrometry. Clin Lab Med 2011; 31:397-405. [DOI: 10.1016/j.cll.2011.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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