1
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Cho CF, Yu L, Nsiama TK, Kadam AN, Raturi A, Shukla S, Amadei GA, Steinmetz NF, Luyt LG, Lewis JD. Viral nanoparticles decorated with novel EGFL7 ligands enable intravital imaging of tumor neovasculature. NANOSCALE 2017; 9:12096-12109. [PMID: 28799610 PMCID: PMC5770569 DOI: 10.1039/c7nr02558k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Angiogenesis is a dynamic process fundamental to the development of solid tumors. Epidermal growth factor-like domain 7 (EGFL7) is a protein whose expression is restricted to endothelial cells undergoing active remodeling that has emerged as a key mediator of this process. EGFL7 expression is associated with poor outcome in several cancers, making it a promising target for imaging or therapeutic strategies. Here, EGFL7 is explored as a molecular target for active neovascularization. Using a combinatorial peptide screening approach, we describe the discovery and characterization of a novel high affinity EGFL7-binding peptide, E7p72, that specifically targets human endothelial cells. Viral nanoparticles decorated with E7p72 peptides specifically target tumor-associated neovasculature with high specificity as assessed by intravital imaging. This work highlights the value of EGFL7 as a target for angiogenic vessels and opens the door for novel targeted therapeutic approaches.
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Affiliation(s)
- Choi-Fong Cho
- Translational Prostate Cancer Research Group, University of Alberta, 5-142C Katz Group Building, 114th St and 87th Ave, Edmonton, AB T6G 2E1, Canada.
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2
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Abstract
Molecular imaging allows for the visualization of changes at the cellular level in diseases such as cancer. A successful molecular imaging agent must rely on disease-selective targets and ligands that specifically interact with those targets. Unfortunately, the translation of novel target-specific ligands into the clinic has been frustratingly slow with limitations including the complex design and screening approaches for ligand identification, as well as their subsequent optimization into useful imaging agents. This review focuses on combinatorial library approaches towards addressing these two challenges, with particular focus on phage display and one-bead one-compound (OBOC) libraries. Both of these peptide-based techniques have proven successful in identifying new ligands for cancer-specific targets and some of the success stories will be highlighted. New developments in screening methodology and sequencing technology have pushed the bounds of phage display and OBOC even further, allowing for even faster and more robust discovery of novel ligands. The combination of multiple high-throughput technologies will not only allow for more accurate identification, but also faster affinity maturation, while overall streamlining the process of translating novel ligands into clinical imaging agents.
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3
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Gross JH. Matrix-Assisted Laser Desorption/Ionization. Mass Spectrom (Tokyo) 2017. [DOI: 10.1007/978-3-319-54398-7_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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4
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Wang W, Fang Q, Hu Z. High-Throughput Peptide Screening on a Bimodal Imprinting Chip Through MS-SPRi Integration. Methods Mol Biol 2016; 1352:111-25. [PMID: 26490471 DOI: 10.1007/978-1-4939-3037-1_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Screening of high affinity and high specificity peptide probes towards various targets is important in the biomedical field while traditional peptide screening procedure is manual and tedious. Herein, a bimodal imprinting microarray system to embrace the whole peptide screening process is presented. Surface Plasmon Resonance imaging (SPRi) and matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF-MS) are combined for both quantitative and qualitative identification of the peptide. The method provides a solution for high efficiency peptide screening.
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Affiliation(s)
- Weizhi Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, No.11. Beiyitiao Zhongguancun, Beijing, 100190, China
| | - Qiaojun Fang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, No.11. Beiyitiao Zhongguancun, Beijing, 100190, China.
| | - Zhiyuan Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, No.11. Beiyitiao Zhongguancun, Beijing, 100190, China.
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5
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Steven RT, Dexter A, Bunch J. Investigating MALDI MSI parameters (Part 1) – A systematic survey of the effects of repetition rates up to 20 kHz in continuous raster mode. Methods 2016; 104:101-10. [DOI: 10.1016/j.ymeth.2016.04.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 03/15/2016] [Accepted: 04/08/2016] [Indexed: 12/30/2022] Open
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6
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Cho CF, Lee K, Speranza MC, Bononi FC, Viapiano MS, Luyt LG, Weissleder R, Chiocca EA, Lee H, Lawler SE. Design of a Microfluidic Chip for Magnetic-Activated Sorting of One-Bead-One-Compound Libraries. ACS COMBINATORIAL SCIENCE 2016; 18:271-8. [PMID: 27124678 DOI: 10.1021/acscombsci.5b00180] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Molecular targeting using ligands specific to disease markers has shown great promise for early detection and directed therapy. Bead-based combinatorial libraries have served as powerful tools for the discovery of novel targeting agents. Screening platforms employing magnetic capture have been used to achieve rapid and efficient identification of high-affinity ligands from one-bead-one-compound (OBOC) libraries. Traditional manual methodologies to isolate magnetized "hit" beads are tedious and lack accuracy, and existing instruments to expedite bead sorting tend to be costly and complex. Here, we describe the design and construction of a simple and inexpensive microfluidic magnetic sorting device using standard photolithography and soft lithography approaches to facilitate high-throughput isolation of magnetized positive hit beads from combinatorial libraries. We have demonstrated that the device is able to sort magnetized beads with superior accuracy compared to conventional manual sorting approaches. This chip offers a very convenient yet inexpensive alternative for screening OBOC libraries.
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Affiliation(s)
- Choi-Fong Cho
- Harvey
Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Kyungheon Lee
- Center
for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Maria-Carmela Speranza
- Harvey
Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Fernanda C. Bononi
- Departments
of Chemistry and Oncology, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Mariano S. Viapiano
- Harvey
Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Leonard G. Luyt
- Departments
of Chemistry and Oncology, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Ralph Weissleder
- Center
for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - E. Antonio Chiocca
- Harvey
Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Hakho Lee
- Center
for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Sean E. Lawler
- Harvey
Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
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7
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Liang X, Vézina-Dawod S, Bédard F, Porte K, Biron E. One-Pot Photochemical Ring-Opening/Cleavage Approach for the Synthesis and Decoding of Cyclic Peptide Libraries. Org Lett 2016; 18:1174-7. [PMID: 26914725 DOI: 10.1021/acs.orglett.6b00296] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A novel dual ring-opening/cleavage strategy to determine the sequence of cyclic peptides from one bead, one compound libraries is described. The approach uses a photolabile residue within the macrocycle and as a linker to allow a simultaneous ring opening and cleavage from the beads upon UV irradiation and provide linearized molecules. Cyclic peptides of five to nine residues were synthesized and the generated linear peptides successfully sequenced by tandem mass spectrometry.
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Affiliation(s)
- Xinxia Liang
- Faculty of Pharmacy, Université Laval , Québec, Québec G1V 0A6, Canada.,Laboratory of Medicinal Chemistry, Centre de recherche du Centre Hospitalier Universitaire de Québec , 2705 Boulevard Laurier, Québec, Québec G1V 4G2, Canada
| | - Simon Vézina-Dawod
- Faculty of Pharmacy, Université Laval , Québec, Québec G1V 0A6, Canada.,Laboratory of Medicinal Chemistry, Centre de recherche du Centre Hospitalier Universitaire de Québec , 2705 Boulevard Laurier, Québec, Québec G1V 4G2, Canada
| | | | - Karine Porte
- Faculty of Pharmacy, Université Laval , Québec, Québec G1V 0A6, Canada.,Laboratory of Medicinal Chemistry, Centre de recherche du Centre Hospitalier Universitaire de Québec , 2705 Boulevard Laurier, Québec, Québec G1V 4G2, Canada
| | - Eric Biron
- Faculty of Pharmacy, Université Laval , Québec, Québec G1V 0A6, Canada.,Laboratory of Medicinal Chemistry, Centre de recherche du Centre Hospitalier Universitaire de Québec , 2705 Boulevard Laurier, Québec, Québec G1V 4G2, Canada
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8
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Bononi FC, Luyt LG. Synthesis and cell-based screening of one-bead-one-compound peptide libraries. Methods Mol Biol 2015; 1248:223-37. [PMID: 25616336 DOI: 10.1007/978-1-4939-2020-4_15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Combinatorial one-bead-one-compound (OBOC) peptide library screening has proven to be a powerful tool for identification of small molecules, peptides, or peptidomimetics against a variety of specific targets such as cell surface receptors, protein kinases, proteases, and phosphatases. With each bead displaying many copies of a single chemical entity, millions of compounds can be rapidly synthesized and screened with whole-cell binding on-bead functional assays. Here we describe the methodology for the synthesis, screening, and sequence deconvolution of an OBOC peptide library analyzed for affinity to a cancer cell line.
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Affiliation(s)
- Fernanda C Bononi
- Department of Chemistry, The University of Western Ontario, London, ON, Canada
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9
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Label-free detection microarray for novel peptide ligands screening base on MS–SPRi combination. Talanta 2015; 134:705-711. [DOI: 10.1016/j.talanta.2014.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 12/07/2014] [Accepted: 12/11/2014] [Indexed: 12/30/2022]
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10
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Cruickshank DR, Luyt LG. The development of organometallic OBOC peptide libraries and sequencing of N-terminal rhenium(I) tricarbonyl-containing peptides utilizing MALDI tandem mass spectrometry. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The development of peptide-based imaging agents through screening of large peptide libraries is hindered by the additional requirement of a radionuclide−chelator complex that can negatively affect the binding properties of the peptide. Herein, we report N-terminal rhenium(I)tricarbonyl OBOC (one-bead, one-compound) peptide libraries for use in the direct screening of potential imaging agents. The rhenium(I) tricarbonyl is incorporated directly in the library as an imaging entity surrogate to account for the presence of a technetium-99m radionuclide chelate. The identification of unknown organometallic peptides on single beads is successfully accomplished through MALDI tandem mass spectrometry, preceded by a systematic investigation of the effects of a variety of N-terminal rhenium(I) tricarbonyl chelates on peptide fragmentation patterns.
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Affiliation(s)
- Dana R. Cruickshank
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, ON N6A 3K7, Canada
| | - Leonard G. Luyt
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, ON N6A 3K7, Canada
- London Regional Cancer Program, 790 Commissioners Rd. E., London, ON N6A 4L6, Canada
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11
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Wang W, Li M, Wei Z, Wang Z, Bu X, Lai W, Yang S, Gong H, Zheng H, Wang Y, Liu Y, Li Q, Fang Q, Hu Z. Bimodal Imprint Chips for Peptide Screening: Integration of High-Throughput Sequencing by MS and Affinity Analyses by Surface Plasmon Resonance Imaging. Anal Chem 2014; 86:3703-7. [DOI: 10.1021/ac500465e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Weizhi Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Menglin Li
- Department
of Biomedical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zewen Wei
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Zihua Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Xiangli Bu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Wenjia Lai
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Shu Yang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - He Gong
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Hui Zheng
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Yuqiao Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Ying Liu
- Beijing
Proteome Research Center, Beijing Institute of Radiation Medicine, Beijing 102206, China
| | - Qin Li
- Department
of Biomedical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Qiaojun Fang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Zhiyuan Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
- Beijing
Proteome Research Center, Beijing Institute of Radiation Medicine, Beijing 102206, China
- Institute for Systems Biology, 401 Terry Avenue N, Seattle, Washington 98109, United States
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12
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Cho CF, Behnam Azad B, Luyt LG, Lewis JD. High-throughput screening of one-bead-one-compound peptide libraries using intact cells. ACS COMBINATORIAL SCIENCE 2013; 15:393-400. [PMID: 23819541 DOI: 10.1021/co4000584] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Screening approaches based on one-bead-one-compound (OBOC) combinatorial libraries have facilitated the discovery of novel peptide ligands for cellular targeting in cancer and other diseases. Recognition of cell surface proteins is optimally achieved using live cells, yet screening intact cell populations is time-consuming and inefficient. Here, we evaluate the Complex Object Parametric Analyzer and Sorter (COPAS) large particle biosorter for high-throughput sorting of bead-bound human cell populations. When a library of RGD-containing peptides was screened against human cancer cells that express αvβ3 integrin, it was found that bead-associated cells are rapidly dissociated when sorted through the COPAS instrument. When the bound cells were reversibly cross-linked onto the beads, however, we demonstrated that cell/bead mixtures can be sorted quickly and accurately. This reversible cross-linking approach is compatible with matrix-assisted laser desorption ionization time-of-flight mass spectrometry-based peptide sequence deconvolution. This approach should allow one to rapidly screen an OBOC library and identify novel peptide ligands against cell surface targets in their native conformation.
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Affiliation(s)
- Choi-Fong Cho
- Translational Prostate Cancer
Research Group, University of Alberta,
5-142C Katz Group Building, 114th Street and 87th Avenue, Edmonton,
AB, T6G 2E1 Canada
| | - Babak Behnam Azad
- Departments
of Chemistry, Oncology,
and Medical Imaging, Western University, London, ON, N6A 5C1 Canada
| | - Leonard G. Luyt
- Departments
of Chemistry, Oncology,
and Medical Imaging, Western University, London, ON, N6A 5C1 Canada
| | - John D. Lewis
- Translational Prostate Cancer
Research Group, University of Alberta,
5-142C Katz Group Building, 114th Street and 87th Avenue, Edmonton,
AB, T6G 2E1 Canada
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13
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Cho CF, Amadei GA, Breadner D, Luyt LG, Lewis JD. Discovery of novel integrin ligands from combinatorial libraries using a multiplex "beads on a bead" approach. NANO LETTERS 2012; 12:5957-5965. [PMID: 23094984 DOI: 10.1021/nl3034043] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The development of screening approaches to identify novel affinity ligands has paved the way for a new generation of molecular targeted nanomedicines. Conventional methods typically bias the display of the target protein to ligands during the screening process. We have developed an unbiased multiplex "beads on a bead" strategy to isolate, characterize, and validate high affinity ligands from OBOC libraries. Novel non-RGD peptides that target α(v)β(3) integrin were discovered that do not affect cancer or endothelial cell biology. The peptides identified here represent novel integrin-targeted agents that can be used to develop targeted nanomedicines without the risk of increased tumor invasion and metastasis.
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Affiliation(s)
- Choi-Fong Cho
- Department of Medical Biophysics, MSB-415A, The University of Western Ontario, London, Ontario, N6A 5C1 Canada
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14
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Lee JH, Choi HS, Nasr KA, Ha M, Kim Y, Frangioni JV. High-throughput small molecule identification using MALDI-TOF and a nanolayered substrate. Anal Chem 2011; 83:5283-9. [PMID: 21651231 DOI: 10.1021/ac2006735] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Encoderless combinatorial chemistry requires high-throughput product identification without the use of chemical or other tags. We developed a novel nanolayered substrate plate and combined it with a microarraying robot, matrix-assisted laser desorption/ionization (MALDI) mass spectrometry, and custom software to produce a high-throughput small molecule identification system. To optimize system performance, we spotted 5 different chemical entities, spanning a m/z range of 195 to 1338, in 20,304 spots for a total of 101,520 molecules. The initial spot identification rate was 99.85% (20,273 spots), and after a proofreading algorithm was added, 100% of 20,304 spots and 101,520 molecules were identified. An internal recalibration algorithm also significantly improved mass accuracy to as low as 45 ppm. Using this optimized system, 47 different chemical entities, spanning a m/z range of 138 to 1,592, were spotted over 5,076 spots and could be identified with 100% accuracy. Our study lays the foundation for improved encoderless combinatorial chemistry.
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Affiliation(s)
- Jeong Heon Lee
- Robotic Chemistry Group, Center for Molecular Imaging, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA
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15
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Analysis of synovial fluid in knee joint of osteoarthritis:5 proteome patterns of joint inflammation based on matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. INTERNATIONAL ORTHOPAEDICS 2011; 36:57-64. [PMID: 21509578 DOI: 10.1007/s00264-011-1258-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2010] [Accepted: 03/26/2011] [Indexed: 10/18/2022]
Abstract
PURPOSE The purpose of this study was to use matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) in osteoarthritis research. Our aim was to find differentially expressed disease-related and condition-specific peptide in synovial fluid in the knee joint of patients suffering from osteoarthritis (OA), and to develop and validate the peptide classification model for OA diagnosis. METHODS Based on the American College of Rheumatology criteria, 30 OA cases and ten healthy donors were enrolled and underwent analysis. Magnetic beads-based weak cation exchange chromatography (MB-WCX) was performed for sample processing, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) was conducted for peptide profile. ClinProt software 2.2 was used for data analysis and a genetic algorithm was created for class prediction. RESULTS Two peptide peaks were found which may be characterised as the potential diagnostic markers for OA. Two other significantly different peptide peaks were found in OA patients at a medium stage compared to the early and late stages. A genetic algorithm (GA) was used to establish differential diagnosis models of OA. As a result, the algorithm models marked 100% of OA, and of 97.92% of medium-stage OA. CONCLUSION This study demonstrated that use of proteomics methods to identify potential biomarkers of OA is possible, and the identified potential biomarkers may be potential markers for diagnosis and monitoring the progression of OA.
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16
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Gross JH. Matrix-Assisted Laser Desorption/Ionization. Mass Spectrom (Tokyo) 2011. [DOI: 10.1007/978-3-642-10711-5_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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