Buffer solution for electroporation and a method comprising...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/87 (2006.01) A61K 38/00 (2006.01) A61K 47/00 (2006.01) A61K 48/00 (2006.01) G01N 33/50 (2006.01)

Patent

CA 2445260

The invention relates to a buffer solution for suspending animal or human cells and for dissolving biologically active molecules in order to introduce said biologically active molecules into the cells using an electric current and to a method for introducing biologically active molecules into animal or human cells using an electric current and a buffer solution. The inventive buffer solution has a buffering capacity of at least 20 mmol *l-1*pH-1 and an ionic strength of at least 200 mmol *l-1 during a change to the pH value from pH 7 to pH 8 and at a temperature of 25 ~C. The use of a buffer solution of this type in the corresponding method allows biologically active molecules to be introduced into animal and human cells with a high degree of transfection efficiency and at the same time a low cell mortality. Different cell types, in particular dormant and actively dividing cells of low activity, can be successfully transfected in said buffer solution.

L'invention concerne une solution tampon destinée à la mise en suspension de cellules humaines et animales et à dissoudre des molécules biologiquement actives en vue d'introduire ces molécules biologiquement actives dans les cellules à l'aide d'un courant électrique. L'invention concerne également un procédé permettant d'introduire des molécules biologiquement actives dans des cellules animales ou humaines à l'aide d'un courant électrique, lequel procédé utilise ladite solution tampon. La solution tampon selon l'invention a, pour une modification du pH de pH 7 à pH 8 et une température de 25 ·C une capacité tampon d'au moins 20 mmol *l?-1¿*pH?-1¿ et une force ionique d'au moins 200 mmol *l?-1¿. L'utilisation d'une telle solution tampon dans le procédé correspondant permet d'introduire des molécules biologiquement actives dans des cellules animales et humaines avec une grande efficacité de transfection tout en réduisant la mortalité des cellules. Dans ce tampon, différents types de cellules, même des cellules au repos et faiblement actives en fission, peuvent être transfectées.

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