Development of Nanosensors and Bioprobes

Journal of Nanoparticle Research - Tập 2 Số 1 - Trang 17-27 - 2000
Vo-Dinh, Tuan1, Griffin, Guy D.1, Alarie, Jean Pierre1, Cullum, Brian1, Sumpter, Bobby1, Noid, Donald1
1Oak Ridge National, Laboratory, Oak Ridge, USA

Tóm tắt

We describe the development and application of nanosensors having bioreceptor probes for bioanalysis. The nanoprobes were fabricated with optical fibers pulled down to tips having distal end sizes of approximately 30–60 nm. The use of two different types of receptors was investigated. Fiberoptic nanoprobes were covalently bound either with bioreceptors, such as antibodies, or with other receptors, such as cyclodextrins that are selective for the size and chemical structure of the analyte molecules. Theoretical calculations were performed to model the binding of beta-cyclodextrin with pyrene and 5,6-benzoquinoline, and to illustrate the possibility of comparing experimental data with theoretical data. The antibody-based nanoprobe was used for in situ measurements of benzopyrene tetrol in single cells. The performance of the nanosensor is illustrated by intracellular measurements performed on a rat liver epithelial cell line (Clone 9) used as the model cell system. The usefulness and potential of these nanotechnology-based biosensors in biological research and applications are discussed.

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Journal of Nanoparticle Research

Tập 2 Số 1

17-27

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