Production of recombinant blood clotting factors in human...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/755 (2006.01) A61K 38/37 (2006.01) C12N 5/10 (2006.01) C12N 15/12 (2006.01) C12P 21/02 (2006.01)

Patent

CA 2404163

The present invention relates to a method for the production of recombinant human blood clotting factors, in particular of factor VIII and factor IX, utilizing an immortalized human cell line stably expressing viral transcription activator proteins and carrying a vector having a promoter functionally linked to a DNA sequence coding for a blood coagulating factor, provided that said promoter is not a viral promoter which is stimulated by said viral transcription activator proteins; an immortalized human cell line carrying said vector; factor VIII muteins particularly suitable for the above production method; pharmaceutical compositions comprising such factor VIII muteins and the use of such factor VIII muteins for preparing a medicament for treating hemophilia.

La présente invention concerne un procédé amélioré de production de facteurs de coagulation sanguine recombinés humains, en particulier les facteurs VIII et IX, utilisant une lignée cellulaire humaine immortalisée exprimant de manière stable des protéines d'activateur de transcription virale et portant un vecteur qui présente un promoteur lié fonctionnellement à une séquence d'ADN codant un facteur de coagulation sanguine, à condition que ledit promoteur ne soit pas un promoteur viral stimulé par lesdites protéines d'activateur de transcription virale; et concerne en outre une lignée cellulaire humaine immortalisée portant ledit facteur; des mutéines du facteur VIII convenant particulièrement au procédé de production précité; des compositions pharmaceutiques comprenant les mutéines du facteur VIII, ainsi que les différentes utilisations des mutéines du facteur VIII dans la préparation d'un médicament destiné à traiter l'hémophilie.

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