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    • 3. 发明申请
    • Methods For Generating Enhanced Antibody-Producing Cell Lines With Improved Growth Characteristics
    • 用于产生具有改善生长特性的增强型抗体生产细胞系的方法
    • US20090155797A1
    • 2009-06-18
    • US12277743
    • 2008-11-25
    • Luigi GrassoJ. Bradford KlineNicholas C. NicolaidesPhilip M. Sass
    • Luigi GrassoJ. Bradford KlineNicholas C. NicolaidesPhilip M. Sass
    • C12Q1/68C12N5/10C12N5/00
    • C12N15/1024C07K16/00C12N15/1034
    • The use of mismatch repair (MMR) defective antibody producer cells offers a method to generate subclone variants with elevated protein production such as antibodies. Using MMR defective cells and animals, new cell lines and animal varieties with novel and useful properties such as enhanced protein production can be generated more efficiently than by relying on the natural rate of mutation. These methods are useful for generating genetic diversity within host cells to alter endogenous genes that can yield increased titer levels of protein production. By employing this method, two genes were discovered whose suppressed expression is associated with enhanced antibody production. Suppressed expression of these genes by a variety of methods leads to increased antibody production for manufacturing as well as strategies for modulating antibody production in immunological disorders. Moreover, the suppression of these two genes in host cells can be useful for generating universal high titer protein production lines.
    • 使用错配修复(MMR)缺陷抗体生产细胞提供了产生具有升高的蛋白质产生的亚克隆变体的方法,例如抗体。 使用MMR缺陷细胞和动物,可以比通过依赖于自然的突变率更有效地产生具有新颖有用性质的新细胞系和动物品种,例如增强的蛋白质产生。 这些方法可用于在宿主细胞内产生遗传多样性以改变可产生增加的蛋白质产生效价水平的内源基因。 通过采用这种方法,发现了两个基因,其抑制表达与抗体产生增强有关。 通过多种方法抑制这些基因的表达导致增加的制造抗体产生以及用于调节免疫疾病中的抗体产生的策略。 此外,在宿主细胞中抑制这两种基因可用于产生通用高滴度蛋白质生产线。