Chlorotoxins as drug carriers

A - Human Necessities – 61 – K

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Details

A61K 47/48 (2006.01) A61K 39/02 (2006.01) A61K 39/385 (2006.01)

Patent

CA 2696303

The present invention relates to the use of a toxin moiety (e.g., a chlorotoxin moiety) as a carrier for therapeutic agents, e.g., therapeutic agents that require intracellular uptake to exert their effects. For example, in some embodiments, the present invention provides conjugates comprising a toxin (e.g., a chlorotoxin) moiety and an anti-cancer moiety and methods for using such conjugates to increase cellular uptake and/or increase specificity for cancer cells of the anti-cancer drug. In some embodiments, the present invention provides conjugates comprising a toxin moiety (e.g., a chlorotoxin moiety) and a nucleic acid agent. Also provided are methods of treatment involving administration of such conjugates, and pharmaceutical compositions and kits useful for carrying out such methods of treatment.

La présente invention concerne l'utilisation d'une fraction toxine (par exemple une fraction chlorotoxine) en tant que véhicule d'agents thérapeutiques, notamment d'agents thérapeutiques qui requièrent une assimilation intracellulaire pour produire leurs effets. Par exemple, selon certains modes de réalisation, la présente invention concerne des conjugués contenant un fraction toxine (p. ex. une chlorotoxine) et une fraction anticancéreuse, ainsi que des procédés d'utilisation de tels conjugués en vue d'augmenter l'assimilation cellulaire et/ou d'augmenter la spécificité du médicament anticancéreux vis-à-vis de cellules cancéreuses. Selon certains modes de réalisations, la présente invention concerne des conjugués contenant une fraction toxine (notamment une fraction chlorotoxine) et un agent sous forme d'acide nucléique. L'invention concerne également des procédés de traitement impliquant l'administration de tels conjugués, et des compositions pharmaceutiques ainsi que des trousses utiles pour la mise en uvre desdites méthodes de traitement.

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