Conjugates of glycosylated/galactosylated peptide

A - Human Necessities – 61 – K

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A61K 47/48 (2006.01)

Patent

CA 2431839

A conjugate of formula A-L-P, in which: A represents a glycosylated/galactosylated peptide that binds to a cell-surface receptor, L represents a bifunctional linker, which does not comprise a naturally occurring amino acid and is covalently bonded to A and P in a regiospecific manner, and P represents a monomer, homopolymer or heteropolymer comprising at least one nucleotide or an analogue thereof, which inhibits the intracellular biosynthesis of nucleotides or nucleic acids in a sequence-independent manner, wherein either or both of the covalent bond between A and L and the covalent bond between L and P can be cleaved intracellularly; a composition comprising such a conjugate; and a method of inhibiting a abnormal cellular proliferation in a mammal; and a method of inhibiting replication of a virus in a mammal.

L'invention concerne un conjugué représenté par la formule A-L-P, dans laquelle A représente un peptide glycosylé/galactosylé qui se lie à un récepteur de surface ; L représente un lieur bifonctionnel qui ne contient pas d'acide aminé naturel et est lié de façon covalente à A et à P de manière régiospécifique ; et P représente un monomère, un homopolymère ou un hétéropolymère contenant au moins un nucléotide ou un analogue de celui-ci, qui inhibe la biosynthèse intracellulaire de nucléotides ou d'acides nucléique indépendamment de la séquence. L'une et/ou l'autre des liaisons covalentes entre A et L ainsi que la liaison covalente entre L et P peuvent être coupées de manière intracellulaire. L'invention concerne aussi une composition contenant ce conjugué ; un procédé d'inhibition d'une prolifération cellulaire anormale chez un mammifère ; et un procédé d'inhibition de la réplication d'un virus chez un mammifère.

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