Structure-guided Discovery of Dual-recognition Chemibodies.

Structure-guided Discovery of Dual-recognition Chemibodies.
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DOI:
10.1038/s41598-018-25848-0
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发表时间:
2018-05-15
期刊:
影响因子:
4.6
通讯作者:
Wang Z
Wang Z
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Cheng AC;Doherty EM;Johnstone S;DiMauro EF;Dao J;Luthra A;Ye J;Tang J;Nixey T;Min X;Tagari P;Miranda LP;Wang Z

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小分子和抗体作为治疗药物各有优势和局限性。在这里,我们第一次就我们的知识提出了结构指导的设计,作为小分子-抗体杂交物,提供小分子和抗体对单个靶点的双重识别,使用DPP-IV酶作为概念研究的证明。生化特性表明,与小分子或抗体组分相比,这些化学抗体对DPP-IV的抑制作用更强。我们通过成功地解决了与DPP-IV络合物中的化学体的共晶结构,确认了内部催化部位的小分子部分和蛋白质表面的Fab部分的特异性结合,验证了我们的设计。化学抗体的发现为利用小分子和抗体形式的力量实现优异的特异性、效力和药代动力学特性的新疗法提供了相当大的潜力。
Small molecules and antibodies each have advantages and limitations as therapeutics. Here, we present for the first time to our knowledge, the structure-guided design of “chemibodies” as small molecule-antibody hybrids that offer dual recognition of a single target by both a small molecule and an antibody, using DPP-IV enzyme as a proof of concept study. Biochemical characterization demonstrates that the chemibodies present superior DPP-IV inhibition compared to either small molecule or antibody component alone. We validated our design by successfully solving a co-crystal structure of a chemibody in complex with DPP-IV, confirming specific binding of the small molecule portion at the interior catalytic site and the Fab portion at the protein surface. The discovery of chemibodies presents considerable potential for novel therapeutics that harness the power of both small molecule and antibody modalities to achieve superior specificity, potency, and pharmacokinetic properties.
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