Mammalian expression vector

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/79 (2006.01)

Patent

CA 2709894

The invention provides vector nucleic acid for expressing at least one polypeptide of interest in a mammalian cell, comprising (a) at least one expression cassette (POI) for expressing a polypeptide of interest; (b) an expression cassette (MSM) comprising a mammalian selectable marker gene; (c) an expression cassette (MASM) comprising a mammalian amplifiable, selectable marker gene; wherein the expression cassette (POI) is flanked 5' by the expression cassette (MASM), the expression cassette (MSM) is located 3' from the expression cassette (POI) and wherein the expression cassettes (MASM), (POI) and (MSM) are arranged in the same 5' to 3' orientation. Also provided are host cells, comprising said vector and methods for producing a polypeptide using respective host cells.

L'invention porte sur un acide nucléique vecteur pour exprimer au moins un polypeptide d'intérêt dans une cellule de mammifère, lequel acide comprend (a) au moins une cassette d'expression (POI) pour exprimer un polypeptide d'intérêt; (b) une cassette d'expression (MSM) comprenant un gène marqueur sélectionnable de mammifère; (c) une cassette d'expression (MASM) comprenant un gène marqueur sélectionnable amplifiable de mammifère; la cassette d'expression (POI) étant flanquée en 5' de la cassette d'expression (MASM), la cassette d'expression (MSM) étant située en 3' de la cassette d'expression (POI) et les cassettes d'expression (MASM), (POI) et (MSM) étant agencées dans la même orientation de 5' à 3'. L'invention porte également sur des cellules hôtes, comprenant ledit vecteur et sur des procédés pour produire un polypeptide utilisant les cellules hôtes respectives.

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