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Carrasquilla C, Kapteyn E, Li Y, Brennan JD. Sol-Gel-Derived Biohybrid Materials Incorporating Long-Chain DNA Aptamers. Angew Chem Int Ed Engl 2017; 56:10686-10690. [PMID: 28556430 DOI: 10.1002/anie.201702859] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Indexed: 11/10/2022]
Abstract
Sol-gel-derived bio/inorganic hybrid materials have been examined for diverse applications, including biosensing, affinity chromatography and drug discovery. However, such materials have mostly been restricted to the interaction between entrapped biorecognition elements and small molecules, owing to the requirement for nanometer-scale mesopores in the matrix to retain entrapped biorecognition elements. Herein, we report on a new class of macroporous bio/inorganic hybrids, engineered through a high-throughput materials screening approach, that entrap micron-sized concatemeric DNA aptamers. We demonstrate that the entrapment of these long-chain DNA aptamers allows their retention within the macropores of the silica material, so that aptamers can interact with high molecular weight targets such as proteins. Our approach overcomes the major limitation of previous sol-gel-derived biohybrid materials by enabling molecular recognition for targets beyond small molecules.
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Affiliation(s)
- Carmen Carrasquilla
- Biointerfaces Institute and the Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 0A3, Canada), or
| | - Emily Kapteyn
- Biointerfaces Institute and the Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 0A3, Canada), or
| | - Yingfu Li
- Biointerfaces Institute and the Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 0A3, Canada), or
| | - John D Brennan
- Biointerfaces Institute and the Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 0A3, Canada), or
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Carrasquilla C, Kapteyn E, Li Y, Brennan JD. Sol-Gel-Derived Biohybrid Materials Incorporating Long-Chain DNA Aptamers. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Carmen Carrasquilla
- Biointerfaces Institute and the Department of Biochemistry and Biomedical Sciences; McMaster University; 1280 Main Street West Hamilton ON L8S 0A3 Canada), or
| | - Emily Kapteyn
- Biointerfaces Institute and the Department of Biochemistry and Biomedical Sciences; McMaster University; 1280 Main Street West Hamilton ON L8S 0A3 Canada), or
| | - Yingfu Li
- Biointerfaces Institute and the Department of Biochemistry and Biomedical Sciences; McMaster University; 1280 Main Street West Hamilton ON L8S 0A3 Canada), or
| | - John D. Brennan
- Biointerfaces Institute and the Department of Biochemistry and Biomedical Sciences; McMaster University; 1280 Main Street West Hamilton ON L8S 0A3 Canada), or
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Perréard C, d'Orlyé F, Griveau S, Liu B, Bedioui F, Varenne A. Aptamer entrapment in microfluidic channel using one-step sol-gel process, in view of the integration of a new selective extraction phase for lab-on-a-chip. Electrophoresis 2017; 38:2456-2461. [PMID: 28370135 DOI: 10.1002/elps.201600575] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 03/12/2017] [Accepted: 03/27/2017] [Indexed: 11/11/2022]
Abstract
There is a great demand for integrating sample treatment into μTASs. In this context, we developed a new sol-gel phase for extraction of trace compounds in complex matrices. For this purpose, the incorporation of aptamers in silica-based gel within PDMS/glass microfluidic channels was performed for the first time by a one-step sol-gel process. The effective gel attachment onto microchannel walls and aptamer incorporation in the polymerized gel were evaluated using fluorescence microscopy. A good gel stability and aptamer incorporation inside the microchannel was demonstrated upon rinsing and over storage time. The ability of gel-encapsulated aptamers to interact with its specific target (either sulforhodamine B as model fluorescent target, or diclofenac, a pain killer drug) was assessed too. The binding capacity of entrapped aptamers was quantified (in the micromolar range) and the selectivity of the interaction was evidenced. Preservation of aptamers binding affinity to target molecules was therefore demonstrated. Dissociation constant of the aptamer-target complex and interaction selectivity were evaluated similar to those in bulk solution. This opens the way to new selective on-chip SPE techniques for sample pretreatment.
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Affiliation(s)
- Camille Perréard
- Chimie ParisTech, PSL Research University, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France.,INSERM, Unité de Technologies Chimiques et Biologiques pour la Santé (U 1022), Paris, France.,CNRS, Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France
| | - Fanny d'Orlyé
- Chimie ParisTech, PSL Research University, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France.,INSERM, Unité de Technologies Chimiques et Biologiques pour la Santé (U 1022), Paris, France.,CNRS, Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France
| | - Sophie Griveau
- Chimie ParisTech, PSL Research University, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France.,INSERM, Unité de Technologies Chimiques et Biologiques pour la Santé (U 1022), Paris, France.,CNRS, Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France
| | - Baohong Liu
- Department of Chemistry, Fudan University, Shanghai, P. R. China
| | - Fethi Bedioui
- Chimie ParisTech, PSL Research University, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France.,INSERM, Unité de Technologies Chimiques et Biologiques pour la Santé (U 1022), Paris, France.,CNRS, Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France
| | - Anne Varenne
- Chimie ParisTech, PSL Research University, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France.,INSERM, Unité de Technologies Chimiques et Biologiques pour la Santé (U 1022), Paris, France.,CNRS, Unité de Technologies Chimiques et Biologiques pour la santé UMR 8258, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Unité de Technologies Chimiques et Biologiques pour la Santé, Paris, France
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