摘要:
Disclosed are immunoassay displacement methods for detecting (preferably identifying) the presence or amount of a target analyte (e.g. drug) in a sample comprising the steps of: (a) exposing the sample to a complex comprising an immobilised antibody capable of specifically binding the analyte, said antibody being specifically bound to a displacement agent, wherein said agent comprises: (i) an analyte analog capable of specifically binding the antibody, (ii) a SE(R)RS active label, (iii) a SE(R)RS surface-seeking group (e.g. benztriazole), whereby any analyte present in the sample causes the displacement of agent from the antibody; (b) exposing any displaced agent to a SE(R)RS surface; and, (c) detecting any displaced agent associated with said surface using SE(R)RS. In preferred forms of the invention several target analytes are detected from a single source or sample simultaneously. Also provided are agents per se e.g. for use in drug or explosive detection. These may include chromophores and linking groups.
摘要:
A method, composition, device, apparatus, and kit for the determination of the presence or amount of an analyte by monitoring an analyte-mediated ligand binding event in a test mixture which contains the analyte to be assayed, a specific binding member, a Raman-active label, and a particulate having a surface capable of inducing a surface-enhanced Raman light scattering. The test mixture is illuminated with a radiation sufficient to cause the Raman-active label in the test mixture to emit a detectable Raman spectrum. The differences in the detected surface-enhanced Raman scattering spectra are dependent upon the amount of the analyte present in the test mixture. Thus, by monitoring these differences, the presence or amount of the analyte are determined.
摘要:
Novel polymers of diagnostic monomers such as enzymes, tagged polypeptides, tagged polyols, tagged olyolefins and tagged carbohydrates which can be used to visualize the association between a detecting agent such as an antibody or complementary nucleotide sequence and its target molecule. The visualization polymers chemically amplify the minute quantity of target detected.
摘要:
The present invention relates to improved specific binding assay methods, kits and devices utilizing chromatographically mobile specific binding reagents labelled with colloidal particles. Specific binding reagents labelled with colloidal particles such as gold and selenium may be subjected to rapid chromatographic solvent transport on chromatographic media by means of selected solvents and chromatographic transport facilitating agents. Further, impregnation of solid substrate materials with labile protein materials including colloidal particle and enzyme labelled reagents in the presence of meta-soluble proteins provides for the rapid resolubilization of such materials which have been dried onto such substrate materials.
摘要:
Méthodes et procédés permettant l'isolation de récepteurs de progestine humaine et l'utilisation de récepteurs de progestine humaine en tant qu'immunogènes dans la production d'anticorps aussi bien monoclonaux que polyclonaux. Ces anticorps sont utilisés pour la détection de récepteurs de progestine, tels que le récepteur de progestérone dans des tissus aussi bien normaux que cancéreux.
摘要:
The present invention relates to (1) a method for storing labile proteins which prevents aggregation and inactivation of the proteins when maintained in the dry state wherein said proteins may be rapidly solubilized, which method comprises drying the protein on a substrate in the presence of an aqueous medium containing a meta-soluble protein, (2) a product produced therefrom comprising a solid substrate upon which is impregnated and dried a labelled protein in the presence of an aqueous medium containing a meta-soluble protein and (3) a composition of matter comprising a colloidal particle labelled reagent and a sufficient amount of a meta-soluble protein to allow resolubilization from a dried state and chromatographic solvent transport of said colloidal particle labelled reagent.
摘要:
An aggregate for qualitatively or quantitatively determining bindable substances. Said aggregate comprises an ultra small colloidal particle and a specific binding agent characterized in that the mean diameter of the colloidal particle is below 2 nm. Preferably the size of the metal particle is selected so that the aggregate is capable of penetrating in standard biological specimens. A universally applicable detection system for determining bindable substances in particular in living material. Further there is provided a process for preparing said aggregate.