Targeting conjugates comprising active agents encapsulated...

A - Human Necessities – 61 – K

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A61K 47/40 (2006.01) A61K 47/36 (2006.01) A61K 47/42 (2006.01) A61K 47/48 (2006.01)

Patent

CA 2692021

A targeting conjugate is provided comprising an active agent, one or more residues of a cyclodextrin (CD)-containing polymer and a biorecognition molecule. The polymer is preferably a peptide or a polypeptide comprising at least one amino acid residue containing a functional side group to which at least one of the CD residues is linked covalently; the biorecognition molecule is covalently bonded directly or via a spacer to the polymer backbone of the CD-containing polymer; and the active agent is noncovalently encapsulated within the cavity of the cyclodextrin residues and/or entrapped within the polymer matrix of the CD-containing polymer.

Un conjugué de ciblage comprend un agent actif, un ou plusieurs résidus d'un polymère contenant de la cyclodextrine (CD) ainsi qu'une molécule de bioreconnaissance. De préférence, le polymère est un peptide ou un polypeptide renfermant au moins un résidu d'aminoacide présentant un groupe latéral fonctionnel auquel est relié de manière covalente au moins un des résidus CD. De plus, la molécule de bioreconnaissance est reliée par covalence, directement ou par le biais d'un segment intercalaire, au squelette linéaire polymère contenant la CD. Par ailleurs, l'agent actif est encapsulé sans covalence dans la cavité des résidus cyclodextrine et/ou piégé dans une matrice polymère du polymère contenant la CD.

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