Polymer Coatings on Virus-like Particle Nanoreactors at Low Ionic Strength-Charge Reversal and Substrate Access.

Polymer Coatings on Virus-like Particle Nanoreactors at Low Ionic Strength-Charge Reversal and Substrate Access.
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在低离子强度下病毒样颗粒纳米反应器上的聚合物涂层-电荷阻挡和基底进入。

DOI:
10.1021/acs.biomac.1c00208
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发表时间:
2021-05-10
期刊:
影响因子:
6.2
通讯作者:
Douglas T
Douglas T
中科院分区:
化学2区
文献类型:
--
作者:
Kraj P;Selivanovitch E;Lee B;Douglas T

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病毒样颗粒(VLP)是一类生物材料,可作为通过内部和外部修饰实现所需功能的平台。通过离子强度介导的静电相互作用,VLP 已被组装成分层有序的材料。这项工作建立在预测模型的基础上,以非常低的离子强度制备聚合物包被的 VLP 簇。 Zeta 电位测量表明,这些团簇带有强正电荷,与 VLP 构建块的电荷完全反转。 SAXS 分析证实聚合物吸附到 VLP 外部。然后,我们研究了封装酶对小分子和大分子底物的活性,以确定分层组装材料的每个成分的影响。我们发现,虽然封装和聚合物涂层对酶的天然小分子底物的接近没有大的影响,但用大分子对底物进行修饰导致聚合物涂层和封装影响酶的接近。
Virus-like particles (VLPs) are a class of biomaterials which serve as platforms for achieving the desired functionality through interior and exterior modifications. Through ionic strength-mediated electrostatic interactions, VLPs have been assembled into hierarchically ordered materials. This work builds on predictive models to prepare polymer-coated VLP clusters at very low ionic strength. Zeta potential measurements showed that the clusters carried a strongly positive charge, a complete charge reversal from the VLP building block. SAXS analysis confirmed polymer adsorption onto the VLP exterior. We then studied the activity of an encapsulated enzyme toward small molecular and macromolecular substrates to determine the effect of each component of the hierarchically assembled material. We found that while encapsulation and polymer coating did not have a large effect on access to the enzyme by its native, small molecular substrate, substrate modification with a macromolecule caused the polymer coating and encapsulation to affect the access to the enzyme.
DOI: 10.1039/c6tb01175f
发表时间: 2016-01-01
影响因子: 7
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期刊: BIOCHEMISTRY
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