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Abstract
The development of sophisticated molecular modeling software and new bioinformatic tools, as well as the emergence of data banks containing detailed information about a huge number of proteins, enabled the de novo intelligent design of synthetic affinity ligands. Such synthetic compounds can be tailored to mimic natural biological recognition motifs or to interact with key surface-exposed residues on target proteins, and are designated as "biomimetic ligands". A well-established methodology for generating biomimetic or synthetic affinity ligands integrates rational design with combinatorial solid-phase synthesis and screening, using the triazine scaffold and analogs of amino acid side chains to create molecular diversity.Triazine-based synthetic ligands are nontoxic, low-cost, and highly stable compounds that can replace advantageously natural biological ligands in the purification of proteins by affinity-based methodologies.
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Affiliation(s)
- Isabel T Sousa
- iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal
| | - M Ângela Taipa
- iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal.
- Department of Bioengineering, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal.
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2
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Marinou M, Platis D, Ataya FS, Chronopoulou E, Vlachakis D, Labrou NE. Structure-based design and application of a nucleotide coenzyme mimetic ligand: Application to the affinity purification of nucleotide dependent enzymes. J Chromatogr A 2018; 1535:88-100. [PMID: 29331223 DOI: 10.1016/j.chroma.2018.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 12/29/2017] [Accepted: 01/03/2018] [Indexed: 10/18/2022]
Abstract
In the present study, a structure-based approach was exploited for the in silico design of a nucleotide coenzyme mimetic ligand. The enzyme formate dehydrogenase (FDH) was employed as a model in our study. The biomimetic ligand was designed and synthesized based on a tryptamine/3-aminopropylphosphonic acid bi-substituted 1,3,5-triazine (Trz) scaffold (Tra-Trz-3APP), which potentially mimics the interactions of NAD+-FDH complex. Molecular docking studies of the biomimetic ligand predicted that it can occupy the same binding site as the natural coenzyme. Molecular modeling and dynamics simulations revealed that the ligand binds in an energetically more stable pose in the FDH binding site, as it adopts a more twisty conformation, compared to the natural coenzyme. Study of the FDH/Tra-Trz-3APP-Sepharose interaction, through adsorption equilibrium studies and site-directed mutagenesis of selected FDH coenzyme binding residues, provided additional experimental evidences of the specificity of the interaction. The Tra-Trz-3APP-Sepharose biomimetic adsorbent was further evaluated towards a range of different dehydrogenases and was exploited for the development of a single-step purification protocol for FDH. The protocol afforded enzyme with high yield and purity, suitable for analytical and industrial purposes.
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Affiliation(s)
- Marigianna Marinou
- Laboratory of Enzyme Technology, Department of Biotechnology, School of Food, Biotechnology and Development, Agricultural University of Athens, 75 Iera Odos Street, GR-11855, Athens, Greece
| | - Dimitrios Platis
- Laboratory of Enzyme Technology, Department of Biotechnology, School of Food, Biotechnology and Development, Agricultural University of Athens, 75 Iera Odos Street, GR-11855, Athens, Greece
| | - Farid S Ataya
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Evangelia Chronopoulou
- Laboratory of Enzyme Technology, Department of Biotechnology, School of Food, Biotechnology and Development, Agricultural University of Athens, 75 Iera Odos Street, GR-11855, Athens, Greece
| | - Dimitrios Vlachakis
- Genetics and Structural Bioinformatics Group, Division of Clinical - Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens, Soranou Efessiou 4, Athens, 11527, Greece
| | - Nikolaos E Labrou
- Laboratory of Enzyme Technology, Department of Biotechnology, School of Food, Biotechnology and Development, Agricultural University of Athens, 75 Iera Odos Street, GR-11855, Athens, Greece.
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3
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Abstract
The development of sophisticated molecular modeling software and new bioinformatic tools, as well as the emergence of data banks containing detailed information about a huge number of proteins, enabled the de novo intelligent design of synthetic affinity ligands. Such synthetic compounds can be tailored to mimic natural biological recognition motifs or to interact with key surface-exposed residues on target proteins and are designated as "biomimetic ligands." A well-established methodology for generating biomimetic or synthetic affinity ligands integrates rational design with combinatorial solid-phase synthesis and screening, using the triazine scaffold and analogues of amino acids side chains to create molecular diversity.Triazine-based synthetic ligands are nontoxic, low-cost, highly stable compounds that can replace advantageously natural biological ligands in the purification of proteins by affinity-based methodologies.
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Affiliation(s)
- Isabel T Sousa
- Centre for Biological and Chemical Engineering, Institute for Biotechnology and Bioengineering (IBB), Instituto Superior Técnico, Technical University of Lisbon, Lisbon, Portugal
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Maltezos A, Platis D, Vlachakis D, Kossida S, Marinou M, Labrou NE. Design, synthesis and application of benzyl-sulfonate biomimetic affinity adsorbents for monoclonal antibody purification from transgenic corn. J Mol Recognit 2013; 27:19-31. [DOI: 10.1002/jmr.2327] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 08/08/2013] [Accepted: 09/09/2013] [Indexed: 01/12/2023]
Affiliation(s)
- Anastasios Maltezos
- Laboratory of Enzyme Technology; Department of Biotechnology; School of Food, Biotechnology and Development, Agricultural University of Athens; 75 Iera Odos GR 118 55 Athens Greece
| | - Dimitris Platis
- Laboratory of Enzyme Technology; Department of Biotechnology; School of Food, Biotechnology and Development, Agricultural University of Athens; 75 Iera Odos GR 118 55 Athens Greece
| | - Dimitrios Vlachakis
- Bioinformatics & Medical Informatics Laboratory; Biomedical Research Foundation of the Academy of Athens; 11527 Athens Greece
| | - Sophia Kossida
- Bioinformatics & Medical Informatics Laboratory; Biomedical Research Foundation of the Academy of Athens; 11527 Athens Greece
| | - Marigianna Marinou
- Laboratory of Enzyme Technology; Department of Biotechnology; School of Food, Biotechnology and Development, Agricultural University of Athens; 75 Iera Odos GR 118 55 Athens Greece
| | - Nikolaos E. Labrou
- Laboratory of Enzyme Technology; Department of Biotechnology; School of Food, Biotechnology and Development, Agricultural University of Athens; 75 Iera Odos GR 118 55 Athens Greece
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The hidden potential of small synthetic molecules and peptides as affinity ligands for bioseparations. ACTA ACUST UNITED AC 2013. [DOI: 10.4155/pbp.13.54] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ayyar BV, Arora S, Murphy C, O'Kennedy R. Affinity chromatography as a tool for antibody purification. Methods 2011; 56:116-29. [PMID: 22033471 DOI: 10.1016/j.ymeth.2011.10.007] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 10/11/2011] [Accepted: 10/12/2011] [Indexed: 11/29/2022] Open
Abstract
The global antibody market has grown exponentially due to increasing applications in research, diagnostics and therapy. Antibodies are present in complex matrices (e.g. serum, milk, egg yolk, fermentation broth or plant-derived extracts). This has led to the need for development of novel platforms for purification of large quantities of antibody with defined clinical and performance requirements. However, the choice of method is strictly limited by the manufacturing cost and the quality of the end product required. Affinity chromatography is one of the most extensively used methods for antibody purification, due to its high selectivity and rapidity. Its effectiveness is largely based on the binding characteristics of the required antibody and the ligand used for antibody capture. The approaches used for antibody purification are critically examined with the aim of providing the reader with the principles and practical insights required to understand the intricacies of the procedures. Affinity support matrices and ligands for affinity chromatography are discussed, including their relevant underlying principles of use, their potential value and their performance in purifying different types of antibodies, along with a list of commercially available alternatives. Furthermore, the principal factors influencing purification procedures at various stages are highlighted. Practical considerations for development and/or optimizations of efficient antibody-purification protocols are suggested.
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Affiliation(s)
- B Vijayalakshmi Ayyar
- Biomedical Diagnostics Institute, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
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Mayani M, McLean MD, Christopher Hall J, Filipe CD, Ghosh R. Recovery and isolation of recombinant human monoclonal antibody from transgenic tobacco plants. Biochem Eng J 2011. [DOI: 10.1016/j.bej.2011.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Platis D, Labrou NE. Application of a PEG/salt aqueous two-phase partition system for the recovery of monoclonal antibodies from unclarified transgenic tobacco extract. Biotechnol J 2009; 4:1320-7. [PMID: 19557796 DOI: 10.1002/biot.200800359] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Aqueous two-phase partition systems (ATPS) have been widely used for the separation of a large variety of biomolecules. In the present report, the application of a polyethylene glycol/phosphate (PEG/phosphate) ATPS for the separation of anti-HIV monoclonal antibodies 2G12 (mAb 2G12) and 4E10 (mAb 4E10) from unclarified transgenic tobacco crude extract was investigated. Optimal conditions that favor opposite phase partitioning of plant debris/mAb as well as high recovery and purification were found to be 13.1% w/w (PEG 1500), 12.5% w/w (phosphate) at pH 5 with a phase ratio of 1.3 and 8.25% w/w unclarified tobacco extract load. Under these conditions, mAb 2G12 and mAb 4E10 were partitioned at the bottom phosphate phase with 85 and 84% yield and 2.4- and 2.1-fold purification, respectively. The proposed ATPS was successfully integrated in an affinity-based purification protocol, using Protein A, yielding antibodies of high purity and yield. In this study, ATPS was shown to be suitable for initial protein recovery and partial purification of mAb from unclarified transgenic tobacco crude extract.
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Affiliation(s)
- Dimitris Platis
- Enzyme Technology Laboratory, Department of Agricultural Biotechnology, Agricultural University of Athens, Athens, Greece
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