B7-H3 binding molecules, antibody drug conjugates thereof and methods of use thereof
申请人:MacroGenics, Inc.
公开号:US10961311B2
公开(公告)日:2021-03-30
The present invention is directed to novel B7-H3-binding molecules capable of binding to human and non-human B7-H3, and in particular to such molecules that are cross-reactive with B7-H3 of a non-human primate (e.g., a cynomolgus monkey). The invention additionally pertains to B7-H3-binding molecules that comprise Variable Light Chain and/or Variable Heavy Chain (VH) Domains that have been humanized and/or deimmunized so as to exhibit a reduced immunogenicity upon administration to recipient subjects. The invention particularly pertains to bispecific, trispecific or multispecific B7-H3-binding molecules, including bispecific diabodies, BiTEs, bispecific antibodies, trivalent binding molecules, etc. that comprise: (i) such B7-H3-binding Variable Domains and (ii) a domain capable of binding to an epitope of a molecule present on the surface of an effector cell. The invention is also directed to pharmaceutical compositions that contain any of such B7-H3-binding molecules, and to methods involving the use of any of such B7-H3-binding molecules in the treatment of cancer and other diseases and conditions. The invention also particularly pertains to a molecule that comprises the human B7-H3 binding domain of a humanized anti-human B7-H3 antibody conjugated to at least one drug moiety (a “B7-H3-ADC”). The invention is also directed to pharmaceutical compositions that contain such B7-H3-ADCs, and to methods involving the use of any of such B7-H3-ADCs in the treatment of cancer and other diseases and conditions.
本发明涉及能够与人类和非人类 B7-H3 结合的新型 B7-H3 结合分子,特别是与非人灵长类动物(如猕猴)的 B7-H3 具有交叉反应的分子。此外,本发明还涉及包含可变轻链和/或可变重链(VH)域的 B7-H3 结合分子,这些分子已被人源化和/或去免疫化,以便在给受试者用药时显示出较低的免疫原性。本发明尤其涉及双特异性、三特异性或多特异性 B7-H3 结合分子,包括双特异性二抗体、双特异性抗体、双特异性抗体、三价结合分子等,这些分子包含:(i) 这种 B7-H3 结合可变区;(ii) 能够与效应细胞表面存在的分子表位结合的结构域。本发明还涉及含有任何此类 B7-H3 结合分子的药物组合物,以及涉及使用任何此类 B7-H3 结合分子治疗癌症及其他疾病和病症的方法。本发明还特别涉及一种分子,该分子包括与至少一种药物分子("B7-H3-ADC")共轭的人源化抗人 B7-H3 抗体的人 B7-H3 结合域。本发明还涉及含有此类 B7-H3-ADC 的药物组合物,以及涉及使用任何此类 B7-H3-ADC 治疗癌症及其他疾病和病症的方法。