FIELD: biotechnologies.
SUBSTANCE: invention relates to a molecule of nucleic acid, which is a cyclic or a linear vector fit for expression, of at least one target polypeptide in cells of mammals, including (a) at least one expressing cassette (POI) for expression of the target polypeptide; (b) an expressing cassette (MSM), including a gene of a selective marker of mammals; (c) an expressing cassette (MASM), including an amplificated gene of a selective marker of mammals; besides, the expressing cassette (POI) is flanked in direction 5' by the expression cassette (MASM), the expression cassette (MSM) is localised in direction 3' from the expression cassette (POI) and in which the expression cassettes (MASM), (POI) and (MSM) are arranged in the same orientation from 5' to 3'. Also the method is disclosed to produce the specified molecule of nucleic acid of the vector, as well as a cell of a host mammal, containing the specified molecule of nucleic acid of the vector, the method to produce a host cell containing the specified molecule of nucleic acid of the vector, and also the method to produce the target polypeptide, using the specified host cell.
EFFECT: invention makes it possible to efficiently produce a target polypeptide in mammal cells.
24 cl, 2 dwg, 4 tbl, 13 ex
