Glycoconjugated fluorescent labeling reagents

C - Chemistry – Metallurgy – 07 – H

Patent

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Details

C07H 17/02 (2006.01) C08B 37/00 (2006.01) C08B 37/02 (2006.01) C08B 37/16 (2006.01) C09B 23/02 (2006.01) C09B 62/00 (2006.01) C12Q 1/68 (2006.01) G01N 33/533 (2006.01) G01N 33/58 (2006.01)

Patent

CA 2288275

Water soluble glycoconjugated fluorescent labeling reagents comprised of a fluorescent dye, one or more sugar or carbohydrate residues that impart water solubility, and a reactive group that allows covalent attachment of the reagent to a substrate are disclosed. Glyconjugated fluorescent labeling reagents having formula (I). These glycoconjugates are highly water soluble because of the sugar residues. This property is expected to lower nonspecific binding to cellular matter, reduce precipitation of labeled substrates, inhibit quenching of fluorescence, and unlike many prior fluorescent labeling reagents, that are soluble only in organic solvents, render the glycoconjugates usable in wholly aqueous solution.

L'invention concerne des réactifs de marquage fluorescents glycoconjugués, comprenant un colorant fluorescent, un ou plusieurs résidus de sucre ou de glucide conférant la solubilité dans l'eau, et un groupe réactif qui permet la liaison de covalence entre le réactif et un substrat. Lesdits réactifs sont représentés par la formule (I). Ces glycoconjugués sont très hydrosolubles en raison de la présence des résidus de sucre. On attend de la solubilité en question qu'elle diminue la liaison non spécifique sur matière cellulaire, réduise la précipitation des substrats marqués, inhibe l'extinction de fluorescence et, contrairement à beaucoup de réactifs de marquage fluorescents existants qui sont solubles uniquement dans des solvants organiques, rende les glycoconjugués utilisables dans des solutions entièrement aqueuses.

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