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Beyond temperature: controlling collagen fibrillogenesis under physiological conditions via interaction with cucurbit[7]uril.
Chemical Communications ( IF 4.3 ) Pub Date : 2020-05-05 , DOI: 10.1039/d0cc01444c
Qiuping Xie 1 , Delong Hou 1 , Jinming Chang 2 , Zhou Xu 3 , Qi Zeng 1 , Zhonghui Wang 1 , Yi Chen 4
Affiliation  

Under physiological ionic strength and pH, temperature has long been appreciated as the only stimulus that can be applied to induce in vitro self-assembly of tropocollagen. Here, we report a second, mechanistically new control strategy that uses non-covalent and selective binding of cucurbit[7]uril, a macrocyclic cavitand, with midchain aromatic residues on the tropocollagen surface. This strategy directly demonstrates the decisive role hydrophobic interactions play in collagen fibrillogenesis. It also points the way to the temporally-controllable formation of collagen fibrils in vivo that is highly desirable, yet challenging, in some biomedical scenarios.

中文翻译:

超越温度:在生理条件下通过与葫芦丝[7]相互作用来控制胶原纤维的形成。

在生理离子强度和pH值下,长期以来人们一直认为温度是唯一可用于诱导原胶原蛋白体外自组装的刺激物。在这里,我们报告了第二个机制新的控制策略,该策略使用葫芦[7] uril(大环空分子)与对流胶原蛋白表面的中链芳族残基进行非共价和选择性结合。这种策略直接证明了疏水相互作用在胶原纤维形成中的决定性作用。它也指出了在某些生物医学情况下,体内胶原纤维的时间可控形成的途径,这是非常需要的,但又具有挑战性。
更新日期:2020-04-02
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