Expression system for preparing il-15/fc fusion proteins and...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/54 (2006.01) C12N 15/62 (2006.01)

Patent

CA 2562761

The invention relates to an expression system containing one or more nucleic acid(s) comprising at least one nucleic acid for an interleukin 15/Fc (IL- 15/Fc) fusion protein, at least one promotor, at least one nucleic acid for a CD5 leader and, where appropriate, at least one nucleic acid for a selectable marker gene; to a nucleic acid comprising the components of the said expression system and to a host cell containing the expression system or the nucleic acid. Furthermore, the invention relates to a process for preparing an IL-15/Fc fusion protein, using the expression system, and to the use of the expression system, the nucleic acid, the host cell or the CD5 leader for expression in host cells.

L'invention concerne un système d'expression contenant un ou plusieurs acides nucléiques, y compris au moins un acide nucléique pour une protéine hybride Fc/interleukine-15 (Fc/IL-15), au moins un promoteur, au moins un acide nucléique pour une amorce CD5 et, si cela convient, au moins un acide nucléique pour un gène marqueur au choix. L'invention concerne également un acide nucléique comprenant les composants de ce système d'expression, ainsi qu'une cellule hôte contenant le système d'expression ou l'acide nucléique. L'invention concerne également, d'une part, un procédé destiné à la préparation d'une protéine hybride Fc/IL-15 utilisant le système d'expression et, d'autre part, l'utilisation du système d'expression, de l'acide nucléique, de la cellule hôte ou de l'amorce CD5 pour l'expression de protéines dans des cellules hôtes.

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