Glutathione-based drug delivery system

A - Human Necessities – 61 – K

Patent

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Details

A61K 47/48 (2006.01) A61K 49/00 (2006.01) A61P 25/28 (2006.01) A61P 31/12 (2006.01) A61P 35/00 (2006.01)

Patent

CA 2752373

The invention relates to methods of targeted drug delivery of compounds, including, chemical agents, (poly)peptides and nucleic acid based drugs (like DNA vaccines, antisense oligonucleotides, ribozymes, catalytic DNA (DNAzymes) or RNA molecules, siRNAs or plasmids encoding thereof). Furthermore, the invention relates to targeted drug delivery of compounds to extravascular and intracellular target sites within cells, tissues and organs, in particular to target sites within the central nervous system (CNS), into and across the blood-brain barrier, by targeting to glutathione transporters present on these cells, tissues and organs. Thereto, the compounds, or the pharmaceutical acceptable carrier thereof, are conjugated to glutathione-based ligands that facilitate the specific binding to and internalization by these glutathione transporters.

La présente invention concerne des procédés d'administration ciblée de composés dont notamment des agents chimiques, des peptides et polypeptides ainsi que des médicaments à base d'acide nucléique tels que des vaccins à l'ADN, des oligonucléotides antisens, des ribozymes, de l'ADN catalytique ou "DNAzymes", ou des molécules d'ARN, des ARN de signalisation, ou des plasmides les codants. L'invention concerne en outre l'administration médicamenteuse ciblée de composés à des sites cibles extravasculaires et intracellulaires à l'intérieur de cellules, de tissus et d'organes, en particulier à des sites à l'intérieur du système nerveux central, dans et au travers de la barrière sang-cerveau, en ciblant sur les transporteurs de glutathionne présents sur ces cellules, tissus, et organes. À cet effet, les composés ou leurs vecteurs pharmaceutiquement admis sont conjugués à des ligands à base de glutathionne qui facilitent, d'une part la liaison spécifique avec les transporteurs de glutathionne, et d'autre part l'internalisation par ces transporteurs de glutathionne.

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