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    • 35. 发明申请
    • Method For Improving Antibody
    • 改善抗体的方法
    • US20080138860A1
    • 2008-06-12
    • US11815838
    • 2006-02-07
    • Masaharu TorikaiToshihiro Nakashima
    • Masaharu TorikaiToshihiro Nakashima
    • C12P21/00C07K16/00
    • C07K16/00C07K16/1271C07K16/2818C07K2317/21C07K2317/24C07K2317/567C07K2317/94
    • The present invention provides for a method for improving properties of an antibody such as an expression level and stability. A method for obtaining an antibody with an improved expression level and/or stability by modifying a human antibody or a humanized antibody, characterized by that at least any one of the amino acid residues at position 8, 12, 15 or 18 (according to Kabat numbering) in a light chain variable region (hereinafter referred to as “VL chain”) of a human antibody or a humanized antibody is substituted with a different amino acid other than proline or cysteine, and a human antibody or a humanized antibody or a human antibody fragment or a humanized antibody fragment with an improved expression level and/or stability which are obtained by said method.
    • 本发明提供了改善抗体性质的方法,例如表达水平和稳定性。 通过修饰人抗体或人源化抗体获得具有改善的表达水平和/或稳定性的抗体的方法,其特征在于,第8,12,15或18位的氨基酸残基中的至少任一种(根据Kabat 编号)在人抗体或人源化抗体的轻链可变区(以下称为“VL链”)中被除脯氨酸或半胱氨酸以外的不同氨基酸,人抗体或人源化抗体或人 抗体片段或具有通过所述方法获得的改善的表达水平和/或稳定性的人源化抗体片段。