Process for enhancing electric field-mediated delivery of...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/00 (2006.01) C12N 15/70 (2006.01) C12N 15/82 (2006.01) C12N 15/85 (2006.01) C12N 15/87 (2006.01) A61K 39/00 (2006.01) A61K 48/00 (2006.01)

Patent

CA 2390716

An object of the invention is to provide simple, nontoxic, and pharmaceutically defined methods for genetic modification of cells and tissues which enable development of a variety of molecular medicines. The invention herein is directed to a method for improving the transfer efficiency of biological material into cells and decreasing the frequency of cell death, in vitro, in vivo, and ex vivo. Specifically, the invention involves the synergistic employment of biopolymer binding reagents, e.g. polynucleotide binding reagents, in combination with electroporation techniques to enhance the efficiency of polynucleotide transfer to the cells of interest and to decrease the frequency of cell death of these cells. The improved electroporation-based gene therapies find particular utility in the transfer of genetic material into cells and has broad applicability for a wide range of gene therapy and polynucleotide vaccine applications. The improved methods of the present invention are useful with both ex vivo and in vivo delivery systems. In addition, the invention herein is not limited to the transport of polynucleotides but rather, is also applicable to the transport of other biopolymers, such as proteins and antigens across cell membranes.

L'invention concerne des procédés pharmaceutiques définis simples, non toxiques, destinés à modifier génétiquement des cellules et des tissus permettant le développement d'une variété de médecines moléculaires. Cette invention concerne un procédé servant à améliorer l efficacité du transfert de matériel biologique dans des cellules et à abaisser la fréquence de mort cellulaire, in vitro, in vivo, et ex vivo. Précisément, cette invention concerne l'utilisation synergique de réactifs de liaison de bioploymères, des réactifs de liaison de polynucléotides, par exemple, combinée avec des techniques d'électroporation, servant à augmenter l'efficacité du transfert de polynucléotides vers les cellules étudiées et à abaisser la fréquence de mort cellulaire. Les thérapies génétiques à base d'électroporation sont particulièrement utiles dans le transfert de matériel génétique dans des cellules et présente un champ d'application large pour une large gamme d'applications de thérapie génique et de vaccination polynucléotidique. Les procédés améliorés de la présente invention sont utiles avec les systèmes d'administration ex vivo et in vivo. De plus, cette invention ne se limite pas au transport de polynucléotides, mais plutôt, elle est applicable au transport d'autres biopolymères, tels que des protéines et des antigènes à travers les membranes cellulaires.

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