Novel reagents for transfection of eukaryotic cells

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/005 (2006.01) A61K 48/00 (2006.01) C07D 241/04 (2006.01) C07K 7/06 (2006.01) C07K 7/08 (2006.01) C07K 14/14 (2006.01) C07K 17/00 (2006.01) C07K 19/00 (2006.01) C12N 15/87 (2006.01)

Patent

CA 2651389

Compositions and methods for improved delivery of macromolecules into eukaryotic cells are provided. Fusogenic peptides from fusion proteins of non-enveloped viruses enhance the efficiency of transfection of eukaryotic cells mediated by transfection agents such as cationic lipids, polycationic polymers such as PEI and dendrimers. These fusogenic peptides are used as part of a transfection complex that efficiently delivers a macromolecule, for example, a nucleic acid, into a eukaryotic cell. Novel cationic lipids and compositions of cationic lipids also are provided that may be used for the introduction of macromolecules such as nucleic acids, proteins and peptides into a variety of cells and tissues. The lipids can be used alone, in combination with other lipids and/or in combination with fusogenic peptides to prepare transfection complexes.

La présente invention concerne des compositions et des procédés permettant d'améliorer la délivrance de macromolécules dans des cellules eucaryotes. Selon l'invention, des peptides fusogènes provenant de protéines de fusion de virus sans enveloppe améliorent l'efficacité de la transfection de cellules eucaryotes induite par des agents de transfection tels que des lipides cationiques, des polymères polycationiques tels que des PEI ou des dendrimères. Ces peptides fusogènes sont utilisés en tant que partie d'un complexe de transfection qui délivre de manière efficace une macromolécule, un acide nucléique par exemple, dans une cellule eucaryote. L'invention concerne également des lipides cationiques et des compositions de lipides cationiques innovants qui peuvent être utilisés pour introduire des macromolécules telles que des acides nucléiques, des protéines ou des peptides dans des cellules et des tissus divers. Les lipides peuvent être utilisés seuls, en combinaison avec d'autres lipides et/ou en combinaison avec des peptides fusogènes pour préparer des complexes de transfection.

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