Electrochemical Evaluation of Binding Affinity for Aptamer Selection Using the Microarray Chip
SCIE
SCOPUS
- Title
- Electrochemical Evaluation of Binding Affinity for Aptamer Selection Using the Microarray Chip
- Authors
- Ye Zhu; Pranjal Chandra; ra, P; Yoon-Bo Shim; Shim, YB
- Date Issued
- 2012-05
- Publisher
- Wiley-VCH
- Abstract
- Simultaneous evaluation of the binding affinity of a series of aptamers toward a target molecule was investigated using an electrochemical microarray chip. The chip was modified by immobilizing seven aptamers obtained from the SELEX process and a control sequence onto gold nanoparticle-comprised conducting polymer-coated microarray electrodes. The chip was then incubated with the target molecule, kanamycin. The electrochemical response of the captured kanamycin was studied to evaluate the binding affinity of the aptamers, which showed the same trend with the fluorescence spectroscopic results. The lowest dissociation constant between a selected aptamer and kanamycin was determined to be 38.06 +/- 0.73 nM.
- Keywords
- Aptamer; Binding affinity; Electrochemical method; Dissociation constant; Microarray chip; SURFACE-PLASMON RESONANCE; CAPILLARY-ELECTROPHORESIS; CONDUCTING POLYMER; AU NANOPARTICLES; SMART APTAMERS; DNA APTAMERS; RNA APTAMERS; RECOGNITION; MOLECULES; LIGANDS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16234
- DOI
- 10.1002/ELAN.201100734
- ISSN
- 1040-0397
- Article Type
- Article
- Citation
- ELECTROANALYSIS, vol. 24, no. 5, page. 1057 - 1064, 2012-05
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