Fluorescent lipid polymer-macromolecular ligand compositions...

C - Chemistry – Metallurgy – 12 – Q

Patent

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C12Q 1/68 (2006.01) G01N 33/543 (2006.01) G01N 33/545 (2006.01) G01N 33/58 (2006.01) G01N 33/78 (2006.01)

Patent

CA 2141936

Methods and composition are provided for the detection of analytes. The method employs a fluorescence production layer which comprises a fluorescent polymerized polyunsaturated lipid layer in association with a ligand which is a member of a specific binding pair whcre the ligand is competitive with the analyte for the complementary binding member or is a complementary binding member. By providing for a fluorescence modulation reagent which binds to the floureacence production layer in proportion to the amount of analyte in the sample, by measuring the resulting fluorescence after carrying out the assay methodology, the amount of analyte can be determined quantitatively.

L'invention concerne des méthodes et des compositions permettant d'effectuer des détections dans des substances à analyser. On utilise une couche productrice de fluorescence, contenant une couche fluorescente de lipides polymérisés et polyinsaturés, conjointement avec un ligand membre d'une paire de liaisons spécifiques, ce ligand étant en concurrence avec la substance à analyser pour devenir le membre de liaison complémentaire, ou étant déjà un membre de ce type. En ajoutant un réactif qui permet de moduler la fluorescence et qui se fixe sur la couche productrice de fluorescence proportionnellement à la quantité de substance à analyser présente dans l'échantillon, et en mesurant la fluorescence qui en résulte après avoir appliqué la méthode concernant le dosage, on peut détecter l'analyte de manière quantitative.

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