Dehydrated chitosan nanoparticles

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/11 (2006.01) A61K 48/00 (2006.01)

Patent

CA 2729923

The present invention relates to dehydrated nanoparticles comprising chitosan and a nucleic acid. Preferably, the nucleic acid is a siRNA. Dehydrated nanoparticles of the invention have improved storage characteristics. The particles may be used in screening methods, e.g. where they have been dried onto a solid support, such as the surface of a culture well. The nanoparticles may also be dried onto implants for tissue engineering scaffolds, where they enable transfection of cells growing on the scaffold. Moreover, the particles have therapeutic relevance.

La présente invention concerne des nanoparticules déshydratées comprenant du chitosane et un acide nucléique. De préférence, l'acide nucléique est un ARNsi. Les nanoparticules déshydratées de l'invention présentent des caractéristiques de stockage améliorées. Les particules peuvent être utilisées dans des procédés de criblage, par exemple où elles ont été séchées sur un support solide, tel que la surface d'un puits de culture. Les nanoparticules peuvent également être séchées sur des implants pour des charpentes d'ingénierie tissulaire, où elles permettent la transfection de cellules poussant sur la charpente. De plus, les particules présentent une pertinence thérapeutique.

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