Nanoparticle polyanion conjugates and methods of use thereof...

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01) C07H 21/00 (2006.01) C07H 21/02 (2006.01) C07H 21/04 (2006.01) G01N 33/543 (2006.01) G01N 33/58 (2006.01)

Patent

CA 2490413

This invention provides polyanionic polymer conjugates containing non- nucleotide polyanionic polymers that are useful in detecting target analytes such as proteins or small molecules. The invention also provides nanoparticle bound to polyanionic polymer conjugates and methods of preparation and use thereof. The polyanionic polymer conjugates have the formula: L-O~PO2-O-Z-O~n- PO2-O-X wherein n ranges from 1 to 200; L represents a moiety comprising a functional group for attaching the polyanion polymer to the nanoparticle surface; Z represents a bridging group, and X represents Q, X~ or -Q-X~, wherein Q represents a functional group for attaching a recognition probe to the polyanion polymer, and X~ represents a recognition probe.

Cette invention concerne des conjugués de polymères polyanioniques contenant des polymères polyanioniques non-nucléotidiques utiles pour détecter des analytes cibles, tels que des protéines ou de petites molécules. L'invention concerne également des nanoparticules liées aux conjugués de polymères polyanioniques, et leurs méthodes de préparation et d'utilisation. Les conjugués de polymères polyanioniques sont représentés par la formule: L-OÝPO¿2?-O-Z-O¨¿n?-PO¿2?-O-X, dans laquelle n est compris entre 1 et 200; L est un fragment comprenant un groupe fonctionnel destiné à fixer le polymère polyanionique à la surface des nanoparticules; Z est un groupe de pontage; et X est Q, X' ou -Q-X' (Q étant un groupe fonctionnel destiné à fixer une sonde de détection à un polymère polyanionique, et X' étant une sonde de détection).

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