Stable factor viii compositions

A - Human Necessities – 61 – K

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A61K 38/37 (2006.01)

Patent

CA 2378751

The present invention relates to a pharmaceutical composition comprising Factor VIII and the divalent metal ions Zn2+ and Cu2+, optionally in the presence of Ca2+ ions and/or Mn2+ ions, wherein said Factor VIII is stable without the addition of albumin. The invention also relates to a method for the production of recombinant Factor VIII from mammalian cells carrying the gene therefor, comprising culturing said mammalian cells in medium free of plasma-derived protein and supplemented with divalent metal ions, including Cu2+ and Zn2+, and optionally in the presence of Ca2+ and Mn2+ ions.

La présente invention concerne une composition pharmaceutique renfermant le facteur VIII ainsi que les ions métalliques divalents Zn?2+¿ et Cu?2+¿, éventuellement en présence d'ions Ca?2+¿ et/ou d'ions Mn?2+¿, ledit facteur VIII étant stable tant que la composition reste exempte d'albumine. Cette invention concerne également un procédé permettant de produire un facteur VIII recombiné à partir de cellules mammifères porteuses du gène de ce facteur, ce procédé consistant notamment à mettre en culture ces cellules mammifères dans un milieu exempt de protéines dérivées du plasma et auquel ont été ajoutés des ions métalliques divalents, y compris Cu?2+¿ et Zn?2+¿, et éventuellement en présence d'ions Ca?2+¿ et Mn?2+¿.

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