The present invention relates to methods for modifying the production of a polypeptide, comprising: (a) introducing a nucleic acid construct into a cell, wherein the cell comprises a DNA sequence encoding a polypeptide, under conditions in which the nucleic acid construct integrates into the genome of the cell at a locus not within the DNA sequence encoding the polypeptide to produce a mutant cell, wherein the integration of the nucleic acid construct modifies the production of the polypeptide by the mutant cell relative to the cell when the mutant cell and the cell are cultured under the same conditions; and (b) identifying the mutant cell with the modified production of the polypeptide.
本发明涉及改变
多肽生产的方法,包括(a) 将核酸构建体导入细胞中,其中细胞包括编码
多肽的 DNA 序列,在此条件下,核酸构建体整合到细胞
基因组中不在编码
多肽的 DNA 序列内的位点上,以产生突变细胞,其中核酸构建体的整合改变了突变细胞和细胞在相同条件下培养时突变细胞相对于细胞产生的
多肽;和 (b) 鉴定突变细胞的
多肽产量是否有所改变。