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Lönne M, Bolten S, Lavrentieva A, Stahl F, Scheper T, Walter JG. Development of an aptamer-based affinity purification method for vascular endothelial growth factor. ACTA ACUST UNITED AC 2015; 8:16-23. [PMID: 28352569 PMCID: PMC4980704 DOI: 10.1016/j.btre.2015.08.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 08/14/2015] [Accepted: 08/19/2015] [Indexed: 11/29/2022]
Abstract
Since aptamers bind their targets with high affinity and specificity, they are promising alternative ligands in protein affinity purification. As aptamers are chemically synthesized oligonucleotides, they can be easily produced in large quantities regarding GMP conditions allowing their application in protein production for therapeutic purposes. Several advantages of aptamers compared to antibodies are described in general within this paper. Here, an aptamer directed against the human Vascular Endothelial Growth Factor (VEGF) was used as affinity ligand for establishing a purification platform for VEGF in small scale. The aptamer was covalently immobilized on magnetic beads in a controlled orientation resulting in a functional active affinity matrix. Target binding was optimized by introduction of spacer molecules and variation of aptamer density. Further, salt-induced target elution was demonstrated as well as VEGF purification from a complex protein mixture proving the specificity of protein-aptamer binding.
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Affiliation(s)
- Maren Lönne
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstr. 5, D-30167 Hannover, Germany
| | - Svenja Bolten
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstr. 5, D-30167 Hannover, Germany
| | - Antonina Lavrentieva
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstr. 5, D-30167 Hannover, Germany
| | - Frank Stahl
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstr. 5, D-30167 Hannover, Germany
| | - Thomas Scheper
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstr. 5, D-30167 Hannover, Germany
| | - Johanna-Gabriela Walter
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstr. 5, D-30167 Hannover, Germany
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Vernet T, Choulier L, Nominé Y, Bellard L, Baltzinger M, Travé G, Altschuh D. Spot peptide arrays and SPR measurements: throughput and quantification in antibody selectivity studies. J Mol Recognit 2015; 28:635-44. [PMID: 25960426 DOI: 10.1002/jmr.2477] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 03/31/2015] [Accepted: 03/31/2015] [Indexed: 11/07/2022]
Abstract
Antibody selectivity represents a major issue in the development of efficient immuno-therapeutics and detection assays. Its description requires a comparison of the affinities of the antibody for a significant number of antigen variants. In the case of peptide antigens, this task can now be addressed to a significant level of details owing to improvements in spot peptide array technologies. They allow the high-throughput mutational analysis of peptides with, depending on assay design, an evaluation of binding stabilities. Here, we examine the cross-reactive capacity of an antibody fragment using the PEPperCHIP(®) technology platform (PEPperPRINT GmbH, Heidelberg, Germany; >8800 peptides per microarray) combined with the surface plasmon resonance characterization (Biacore(®) technology; GE-Healthcare Biacore, Uppsala, Sweden) of a subset of interactions. ScFv1F4 recognizes the N-terminal end of oncoprotein E6 of human papilloma virus 16. The spot permutation analysis (i.e. each position substituted by all amino acids except cysteine) of the wild type decapeptide (sequence (6)TAMFQDPQER(15)) and of 15 variants thereof defined the optimal epitope and provided a ranking for variant recognition. The SPR affinity measurements mostly validated the ranking of complex stabilities deduced from array data and defined the sensitivity of spot fluorescence intensities, bringing further insight into the conditions for cross-reactivity. Our data demonstrate the importance of throughput and quantification in the assessment of antibody selectivity.
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Affiliation(s)
- Thierry Vernet
- IBS, Université Grenoble Alpes, F-38044, Grenoble, France.,IBS, CNRS, F-38044, Grenoble, France.,IBS, CEA, F-38044, Grenoble, France
| | - Laurence Choulier
- Biotechnologie et signalisation cellulaire, Université de Strasbourg, CNRS, ESBS, Boulevard Sébastien Brant BP10413, 67412, Illkirch, France.,Faculté de Pharmacie, CNRS UMR 7213, Université de Strasbourg, 74 route du Rhin, 67401, Illkirch, France
| | - Yves Nominé
- Biotechnologie et signalisation cellulaire, Université de Strasbourg, CNRS, ESBS, Boulevard Sébastien Brant BP10413, 67412, Illkirch, France
| | - Laure Bellard
- IBS, Université Grenoble Alpes, F-38044, Grenoble, France.,IBS, CNRS, F-38044, Grenoble, France.,IBS, CEA, F-38044, Grenoble, France
| | - Mireille Baltzinger
- Biotechnologie et signalisation cellulaire, Université de Strasbourg, CNRS, ESBS, Boulevard Sébastien Brant BP10413, 67412, Illkirch, France.,IBMC, CNRS UPR 9002 - ARN, Université de Strasbourg, 15 rue René Descartes, 67084, Strasbourg Cedex, France
| | - Gilles Travé
- Biotechnologie et signalisation cellulaire, Université de Strasbourg, CNRS, ESBS, Boulevard Sébastien Brant BP10413, 67412, Illkirch, France
| | - Danièle Altschuh
- Biotechnologie et signalisation cellulaire, Université de Strasbourg, CNRS, ESBS, Boulevard Sébastien Brant BP10413, 67412, Illkirch, France
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Rich RL, Myszka DG. Grading the commercial optical biosensor literature-Class of 2008: 'The Mighty Binders'. J Mol Recognit 2010; 23:1-64. [PMID: 20017116 DOI: 10.1002/jmr.1004] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Optical biosensor technology continues to be the method of choice for label-free, real-time interaction analysis. But when it comes to improving the quality of the biosensor literature, education should be fundamental. Of the 1413 articles published in 2008, less than 30% would pass the requirements for high-school chemistry. To teach by example, we spotlight 10 papers that illustrate how to implement the technology properly. Then we grade every paper published in 2008 on a scale from A to F and outline what features make a biosensor article fabulous, middling or abysmal. To help improve the quality of published data, we focus on a few experimental, analysis and presentation mistakes that are alarmingly common. With the literature as a guide, we want to ensure that no user is left behind.
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Affiliation(s)
- Rebecca L Rich
- Center for Biomolecular Interaction Analysis, University of Utah, Salt Lake City, UT 84132, USA
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