Lin Limin, Li Li, Zhou Changhua, Li Jing, Liu Jiayu, Shu Rui, Dong Bin, Li Qing, Wang Zhong
School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P.R. China.
Center for Cellular and Structural Biology, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P.R. China.
Oncol Lett. 2018 Jul;16(1):1259-1266. doi: 10.3892/ol.2018.8698. Epub 2018 May 11.
Bispecific antibodies have been actively studied for cancer therapy due to their potent cytotoxicity against tumor cells. A number of bispecific antibody formats have exhibited strong tumor cytotoxicity and . However, effective production of bispecific antibodies remains challenging for the majority of bispecific antibody formats. In the present study, a bispecific antibody was designed that links a conventional antigen-binding fragment (Fab) against cluster of differentiation 3 antigen (CD3) to a camel single domain antibody (VHH) against human epidermal growth factor receptor 2 (HER2). This bispecific antibody may be secreted and purified efficiently from culture medium. The purified bispecific antibody is able to trigger T cell-mediated HER2-specific cytotoxicity and . The data gathered in the present study suggest that this bispecific format may be applied to other tumor antigens to produce bispecific antibodies more efficiently.
由于双特异性抗体对肿瘤细胞具有强大的细胞毒性,因此已被积极研究用于癌症治疗。许多双特异性抗体形式已表现出强大的肿瘤细胞毒性。然而,对于大多数双特异性抗体形式而言,有效生产双特异性抗体仍然具有挑战性。在本研究中,设计了一种双特异性抗体,它将针对分化簇3抗原(CD3)的传统抗原结合片段(Fab)与针对人表皮生长因子受体2(HER2)的骆驼单域抗体(VHH)连接起来。这种双特异性抗体可以从培养基中高效分泌和纯化。纯化后的双特异性抗体能够触发T细胞介导的HER2特异性细胞毒性。本研究收集的数据表明,这种双特异性形式可应用于其他肿瘤抗原,以更有效地生产双特异性抗体。