用于调节细胞-生物材料相互作用的具有动态生物活性的表位印迹生物界面。
An Epitope-Imprinted Biointerface with Dynamic Bioactivity for Modulating Cell-Biomaterial Interactions.
机构信息
Department of Biomedical Sciences, Faculty of Health and Society, Malmö University, SE 205 06, Malmö, Sweden.
Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China.
出版信息
Angew Chem Int Ed Engl. 2017 Dec 11;56(50):15959-15963. doi: 10.1002/anie.201708635. Epub 2017 Oct 16.
In this study, an epitope-imprinting strategy was employed for the dynamic display of bioactive ligands on a material interface. An imprinted surface was initially designed to exhibit specific affinity towards a short peptide (i.e., the epitope). This surface was subsequently used to anchor an epitope-tagged cell-adhesive peptide ligand (RGD: Arg-Gly-Asp). Owing to reversible epitope-binding affinity, ligand presentation and thereby cell adhesion could be controlled. As compared to current strategies for the fabrication of dynamic biointerfaces, for example, through reversible covalent or host-guest interactions, such a molecularly tunable dynamic system based on a surface-imprinting process may unlock new applications in in situ cell biology, diagnostics, and regenerative medicine.
在这项研究中,采用了一种表位印迹策略,在材料界面上动态展示生物活性配体。最初设计了一个印迹表面,以对短肽(即表位)表现出特异性亲和力。随后,该表面被用于固定一个带有表位标记的细胞黏附肽配体(RGD:精氨酸-甘氨酸-天冬氨酸)。由于可逆的表位结合亲和力,可以控制配体的呈现和细胞黏附。与目前用于制造动态生物界面的策略(例如,通过可逆的共价或主体-客体相互作用)相比,基于表面印迹过程的这种分子可调动态系统可能会在原位细胞生物学、诊断学和再生医学等领域开辟新的应用。