Biomarkers for oxidative stress
First Claim
1. An immunoassay method to detect a biomarker of oxidative stress in a biological sample utilizing an antibody which binds said biomarker of oxidative stress, said method comprising the steps of:
- (a) contacting a sample containing said biomarker of oxidative stress with said antibody under conditions which allow binding of said biomarker of oxidative stress to said antibody;
(b) detecting the presence of said biomarker of oxidative stress in said sample.
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Abstract
This invention related generally to methods of detecting and quantifying biomarkers of oxidative stress in proteins. The biomarker may be any amino acid that has undergone oxidation (or other modification, e.g. chloro-tyrosine, dityrosine). Emphasis is given herein on oxidized sulfur- or selenium-containing amino acids (SSAA). The biomarker of oxidative stress in proteins may be detected with an antibody that binds to oxidized amino acids, specifically oxidized sulfur- or selenium-containing amino acids. The antibody may be monoclonal or polyclonal. The presence of biomarker or amount of biomarker present in a sample may be used to aid in assessing the efficacy of environmental, nutritional and therapeutic interventions, among other uses.
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Citations
35 Claims
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1. An immunoassay method to detect a biomarker of oxidative stress in a biological sample utilizing an antibody which binds said biomarker of oxidative stress, said method comprising the steps of:
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(a) contacting a sample containing said biomarker of oxidative stress with said antibody under conditions which allow binding of said biomarker of oxidative stress to said antibody;
(b) detecting the presence of said biomarker of oxidative stress in said sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 16, 17, 18, 19)
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- 13. The method of clam 12 wherein said monoclonal antibody detects biomarkers of oxidative stress in any protein containing said biomarkers.
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20. A method of detecting an oxidized sulfur- or selenium-containing amino acid in a biological sample utilizing an antibody which binds a protein, peptide or proteineaceous aggregate which comprises an oxidized sulfur- or selenium-containing amino acid, said method comprising the steps of:
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(a) contacting said sample with said antibody under conditions which allow binding of the protein, peptide or proteineaceous aggregate and said antibody; and
(b) detecting the presence of said antibody in said sample. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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- 32. A method for detecting the presence of oxidative stress in an organism, said method comprising detecting the presence of an antibody that binds an analyte comprising an oxidized sulfur- or selenium containing amino acid, whereby the presence of said antibody is indicative of the presence of oxidative stress in said organism.
Specification