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    • 3. 发明公开
    • SEPARATION OF BISPECIFIC ANTIBODIES AND BISPECIFIC ANTIBODY PRODUCTION SIDE PRODUCTS USING HYDROXYAPATITE CHROMATOGRAPHY
    • 双特异性抗体和副产品从生产双特异性抗体BY HYDROXYAPATITCHROMATOGRAFIE分离
    • EP3036253A1
    • 2016-06-29
    • EP14761965.4
    • 2014-08-18
    • F. Hoffmann-La Roche AG
    • BERTL, SabineDUERR, HaraldSCHAUBMAR, Andreas
    • C07K16/00C07K1/16C07K16/46C07K16/28C07K16/22C07K16/24
    • The present invention is directed to methods comprising the use of hydroxyapatite chromatography to separate a bispecific antibody from a solution that also comprises one or more byproducts specific to bispecific antibody production. Byproducts specific to the production of bispecific antibodies (bispecific antibody specific byproducts, “BASB”) include fragments of the bispecific antibody and heavier molecular weight variants of the antibody, wherein the fragment and/or variant comprises an Fc domain but does not exhibit affinity for the two different epitopes and/or antigens as exhibited by the desired bispecific antibody. Thus, the methods of the present invention comprise the separation of a bispecific antibody from one or more of its BASB. The hydroxyapatite chromatography methods of the invention may be used alone or may be further combined with standard purification processes and unit operations as is known in the art to achieve any level of purity of bispecific antibody necessary, e.g., for therapeutic and/or diagnostic applications.
    • 本发明涉及包括使用羟基磷灰石层析,以从溶液中分离的双特异性抗体的方法这样做是包括一个或多个特定的副产物双特异性抗体的产生。 具体的生产双特异性抗体的副产物(双特异性抗体特异性副产物,“BASB”)包括与双特异性抗体的片段和该抗体的较重分子量的变体,worin片段/或变体Fc结构域包括,但不表现出亲合性 的两个不同表位和/或作为展出由期望双特异性抗体的抗原。 因此,本发明的方法包括从一个或多个其BASB的双特异性抗体的分离。 本发明的羟基磷灰石层析方法可以单独使用,也可以与标准的纯化方法和单元操作,如本领域中已知的,以实现双特异性抗体的必要,E. G.,用于治疗和/或诊断应用中的任何纯度水平进一步组合。