The needs of biomedicine and biotechnology require improved measurement devices and techniques for purposes of analysis, monitoring, and control. Electrochemical biosensors can provide a possible means of meeting such needs if capabilities can be extended to a wider range of biomolecules and more complex matrices. It is proposed to undertake two new initiatives involving a synthesis of biological and analytical concepts: (1) To employ chemoreceptors as molecular recognition elements for the purpose of developing receptor enzyme amplified assays. Drugs such as PCP (angel dust) and specifically targeted. (2) To develop probes for continuous monitoring of antigens using monoclonal antibodies immobilized at an electrode tip. It is expected that reversible and reusable sensors would result if competitive inhibition is carried out in a thin layer at the sensing surface. Through these research directions we hope to achieve simplification of existing bianalytical methods with savings of time and cost as well as the elimination of reagents and sample treatment steps.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
3R01GM025308-12S1
Application #
2174420
Study Section
Metallobiochemistry Study Section (BMT)
Project Start
1989-07-01
Project End
1995-06-30
Budget Start
1992-07-01
Budget End
1995-06-30
Support Year
12
Fiscal Year
1992
Total Cost
Indirect Cost
Name
University of Hawaii
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
121911077
City
Honolulu
State
HI
Country
United States
Zip Code
96822
Smit, M H; Rechnitz, G A (1993) Toxin detection using a tyrosinase-coupled oxygen electrode. Anal Chem 65:380-5
Chen, L; Martin, G B; Rechnitz, G A (1992) Microtiter plate binding assay for cholinergic compounds utilizing the nicotinic acetylcholine receptor. Anal Chem 64:3018-23
Takeuchi, T; Tanaka, S; Rechnitz, G A (1992) Biotinylated 1012-S conjugate as a probe ligand for benzodiazepine receptors: characterization of receptor binding sites and receptor assay for benzodiazepine drugs. Anal Biochem 203:158-62
Tanaka, S; Takeuchi, T; Rechnitz, G A (1992) Non-isotopic receptor assay for benzodiazepines using a biotin-labeled ligand and biotin-immobilized microtiter plate. J Chromatogr 597:443-8
Smit, M H; Rechnitz, G A (1992) Reagentless enzyme electrode for the determination of manganese through biocatalytic enhancement. Anal Chem 64:245-9
Takeuchi, T; Rechnitz, G A (1991) Nonisotopic receptor-binding assay for benzodiazepine receptors utilizing a fluorophore labeled ligand. Anal Biochem 194:250-5
Takeuchi, T; Rechnitz, G A (1990) Enzymatic solid-phase assay for biotin and a biotin-benzodiazepine conjugate. Bioconjug Chem 1:227-30
Hallowell, S F; Rechnitz, G A (1990) Enzyme-amplified receptor assay screening test for chlorpromazine, trifluoperazine, and phencyclidine. J Clin Lab Anal 4:64-73
Ho, M Y; Rechnitz, G A (1987) Highly stable biosensor using an artificial enzyme. Anal Chem 59:536-7
Yao, T; Rechnitz, G A (1987) Potentiometric biosensor for riboflavin based on the use of aporiboflavin-binding protein. Anal Chem 59:2115-8

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