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Title: High density array fabrication and readout method for a fiber optic biosensor

Patent ·
OSTI ID:874570

The invention relates to the fabrication and use of biosensors comprising a plurality of optical fibers each fiber having attached to its "sensor end" biological "binding partners" (molecules that specifically bind other molecules to form a binding complex such as antibody-antigen, lectin-carbohydrate, nucleic acid-nucleic acid, biotin-avidin, etc.). The biosensor preferably bears two or more different species of biological binding partner. The sensor is fabricated by providing a plurality of groups of optical fibers. Each group is treated as a batch to attach a different species of biological binding partner to the sensor ends of the fibers comprising that bundle. Each fiber, or group of fibers within a bundle, may be uniquely identified so that the fibers, or group of fibers, when later combined in an array of different fibers, can be discretely addressed. Fibers or groups of fibers are then selected and discretely separated from different bundles. The discretely separated fibers are then combined at their sensor ends to produce a high density sensor array of fibers capable of assaying simultaneously the binding of components of a test sample to the various binding partners on the different fibers of the sensor array. The transmission ends of the optical fibers are then discretely addressed to detectors--such as a multiplicity of optical sensors. An optical signal, produced by binding of the binding partner to its substrate to form a binding complex, is conducted through the optical fiber or group of fibers to a detector for each discrete test. By examining the addressed transmission ends of fibers, or groups of fibers, the addressed transmission ends can transmit unique patterns assisting in rapid sample identification by the sensor.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
DOE Contract Number:
AC03-76SF00098
Assignee:
The Regents of the University of California (Oakland, CA); Medical Research Council (London, GB)
Patent Number(s):
US 6417506
OSTI ID:
874570
Country of Publication:
United States
Language:
English

References (18)

Fiber-optic-based biosensor: signal enhancement in a production model conference April 1992
Fibre-optic biosensor for hypoxanthine and xanthine based on a chemiluminescence reaction journal January 1994
Fiber-Optic DNA Sensor for Fluorometric Nucleic Acid Determination journal August 1995
An optical biosensor using a fluorescent, swelling sensing element journal January 1994
Hybridization of denatured RNA and small DNA fragments transferred to nitrocellulose. journal September 1980
Enzyme-based fiber-optic device for the determination of total and free cholesterol journal January 1992
Intelligent Materials Properties of DNA and Strategies for Its Incorporation into Electroactive Polymeric Thin Film Systems journal July 1994
One-step immobilization of immunoglobulin G and potential of the method for application in immunosensors journal August 1995
Comparative genomic hybridization for molecular cytogenetic analysis of solid tumors journal October 1992
Cellulose As A New Matrix For One-step Immobilized Antibodies And Application In High Specific Immunosensors conference January 1995
A fibre-optic chemical sensor with discrete sensing sites journal September 1991
Fiber optic biosensor for fluorimetric detection of DNA hybridization journal April 1994
An improved method to create nitrocellulose particles suitable for the immobilization of antigen and antibody journal November 1995
Continuous-flow bioluminescent assay of NADH using a fibre-optic sensor journal November 1989
Gene probe assays on a fibre-optic evanescent wave biosensor journal January 1992
Luminescence Fiber-Optic Biosensor journal May 1988
Multifiber, multiwavelength, fiber optic fluorescence spectrophotometer journal January 1992
Fluorescence microstructure using a laser/fiber optic profiler conference September 1990