Assay method utilizing photoactivated chemiluminescent label
First Claim
1. A method for determining an analyte, said method comprising:
- providing in combination (1) a medium suspected of containing said analyte, (2) a label reagent comprising a first specific binding pair (sbp) member associated with a photochemically activatable chemiluminescent compound (PACC) wherein said first sbp member is capable of binding to said analyte or to a second sbp member to form a complex related to the presence of said analyte,photochemically activating said PACC, anddetecting the amount of luminescence generated by said PACC, the amount thereof being related to the amount of analyte in said medium.
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Abstract
Methods are disclosed for determining an analyte in a medium suspected of containing the analyte. One method comprises providing (1) a medium suspected of containing the analyte, (2) a label reagent comprising a first specific binding pair (sbp) member associated with a photochemically activatable chemiluminescent compound wherein the first sbp member is capable of binding to the analyte or to a second sbp member to form a complex related to the presence of the analyte. The method further comprises photochemically activating the chemiluminescent compound. The amount of luminescence generated by the chemiluminescent compound is detected. The amount thereof is related to the amount of analyte in the medium. Compositions and kits are also disclosed.
322 Citations
86 Claims
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1. A method for determining an analyte, said method comprising:
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providing in combination (1) a medium suspected of containing said analyte, (2) a label reagent comprising a first specific binding pair (sbp) member associated with a photochemically activatable chemiluminescent compound (PACC) wherein said first sbp member is capable of binding to said analyte or to a second sbp member to form a complex related to the presence of said analyte, photochemically activating said PACC, and detecting the amount of luminescence generated by said PACC, the amount thereof being related to the amount of analyte in said medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for determining an analyte, said method comprising:
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combining in an assay medium (1) a medium suspected of containing an analyte, and (2) a label reagent comprising a member of a specific binding pair (sbp member) bound to a photochemically activatable chemiluminescent compound (PACC) under conditions wherein an sbp member complex involving said label reagent is formed in relation to the presence of analyte in said medium, irradiating said assay medium with light to activate said PACC, and examining said assay medium for a signal, the presence or intensity thereof being related to the amount of analyte in said medium. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A method for determining an analyte, said method comprising:
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combining in an assay medium either simultaneously or wholly or partially sequentially (1) a medium suspected of containing an analyte, (2) a label reagent comprising a first member of a specific binding pair (sbp member) bound to a compound capable of chemiluminescence upon reaction with singlet oxygen ("said compound"), and (3) an insolubilized reagent comprising a second sbp member under conditions wherein an sbp member complex involving said label reagent and said insolubilized reagent is formed in relation to the presence of analyte in said medium, separating said assay medium and said insolubilized reagent, activating said compound in said medium or on said insolubilized reagent with light, and examining said assay medium or said reagent for a signal, the presence or intensity thereof being related to the amount of analyte in said medium. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A method for determining an analyte, said method comprising:
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combining in an assay medium either simultaneously or wholly or partially sequentially (1) a medium suspected of containing an analyte, (2) a label reagent comprising a first member of a specific binding pair (sbp member) bound to a compound capable of chemiluminescence upon reaction with singlet oxygen ("said compound"), (3) a singlet oxygen generator, and (4) a reagent comprising a fluorescent energy acceptor bound to, or capable of becoming bound to, a second sbp member, under conditions wherein an sbp member complex involving said label reagent and said energy acceptor is formed in relation to the presence of analyte in said medium and energy from said compound is capable of activating said fluorescent energy acceptor, activating said singlet oxygen generator, and examining said assay medium for a signal, the presence or intensity thereof being related to the amount of analyte in said medium. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A method for determining a polynucleotide analyte, said method comprising:
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combining in an assay medium, (1) a sample suspected of containing a polynucleotide analyte and (2) a label reagent comprising a photochemically activatable chemiluminescent compound (PACC) bound to a polynucleotide, at least a portion of which is capable of hybridizing with said polynucleotide analyte, under conditions wherein said label reagent hybridizes with said polynucleotide analyte if present, irradiating said assay medium to activate said PACC, and measuring the fluorescent energy emitted from said medium, the amount thereof being related to the amount of analyte in said sample. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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- 72. A composition comprising a photochemically activated chemiluminescent compound (PACC) associated with a member of a specific binding pair.
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77. A kit comprising in packaged combination:
- (1) a composition comprising a photochemically activatable chemiluminescent compound (PACC), having bound thereto a specific binding pair (sbp) member, and (2) a photosensitizer which is not in said composition.
- View Dependent Claims (78, 79, 80, 81, 82, 83, 84, 85, 86)
Specification