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- W1995641708 abstract "This paper reports the first demonstration of a fluorescence resonance energy transfer based glucose sensor, wherein a competitive binding (CB) assay is encapsulated into polyelectrolyte microcapsules. The work supports the concept that microcapsules are superior to hydrogel systems or other matrixes for competitive-binding-based system, as they provide free movement of the sensing elements within the capsule interior while constant total sensing assay concentration is maintained. The transduction approach employed in these preliminary experiments is also a novel CB system based on a model apoenzyme, apo-glucose oxidase (AG), which is highly specific to β-d-glucose, as the model target-binding protein. The glucose sensitivity of the fluorescein isothiocyanate (FITC)−dextran and tetramethylrhodamine isothiocyanate−AG encapsulated in microcapsules showed 5 times greater specificity for β-d-glucose over other sugars, with sensitivity (change in intensity ratio) in the range of 2−6%/mM. It was observed that the sensitivity and range of the response can be tailored by controlling the assay concentration using different FITC−dextran molecular weight and total capsule concentration. The findings support the concepts of using microcapsules to encapsulate CB assays for reversible and stable sensors and the use of apoenzymes as specific molecular recognition elements in CB assays. Further, characterization results for microcapsule glucose sensors demonstrate their suitability for monitoring physiological glucose levels." @default.
- W1995641708 created "2016-06-24" @default.
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- W1995641708 date "2005-07-22" @default.
- W1995641708 modified "2023-10-03" @default.
- W1995641708 title "Microcapsule Biosensors Using Competitive Binding Resonance Energy Transfer Assays Based on Apoenzymes" @default.
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- W1995641708 doi "https://doi.org/10.1021/ac050755u" @default.
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