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

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 aremore » 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.« less
Inventors:
 [1];  [2]
  1. (Walnut Creek, CA)
  2. (San Francisco, CA)
Issue Date:
OSTI Identifier:
871246
Assignee:
Regents of University of California (Oakland, CA) LBNL
Patent Number(s):
US 5690894
Contract Number:
AC03-76SF00098
Research Org:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
Country of Publication:
United States
Language:
English
Subject:
density; array; fabrication; readout; method; fiber; optic; biosensor; relates; biosensors; comprising; plurality; optical; fibers; attached; sensor; biological; binding; partners; molecules; specifically; bind; form; complex; antibody-antigen; lectin-carbohydrate; nucleic; acid-nucleic; acid; biotin-avidin; etc; preferably; bears; species; partner; fabricated; providing; treated; batch; attach; bundle; uniquely; identified; combined; discretely; addressed; selected; separated; bundles; produce; capable; assaying; simultaneously; components; sample; various; transmission; detectors-such; multiplicity; sensors; signal; produced; substrate; conducted; detector; discrete; examining; transmit; unique; patterns; assisting; rapid; identification; binding partner; binding partners; sensor array; optical sensors; optical fibers; fiber optic; nucleic acid; optical fiber; optical signal; optical sensor; specifically bind; readout method; optic biosensor; density array; array fabrication; biosensors comprising; /422/65/250/435/

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