结合体分子作为冰再结晶抑制剂的价值依赖活性
Xiaoqian Tian1, Huangbing Xu1,2, Teng Qiu1,2
1Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China.
ACS macro letters
|July 15, 2024
概括
体有机分子 (CMs) 具有取决于价值的冰再结晶抑制 (IRI) 活性. 较高的贾努斯粒子 (AX1) 分数显著减少冰晶大小和生长速度,为抗蛋白模仿设计提供了新的途径.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 防蛋白 (AFP) 和它们的合成模仿物对冷保存至关重要.
- 现有的合成AFP从简单的分子到复杂的自我组装.
- 冰再结晶抑制 (IRI) 是在低温下保存生物材料的关键.
研究的目的:
- 为了研究体有机分子 (CMs) 的取决于价值的IRI活性.
- 探索CM结构与IRI疗效之间的关系.
- 设计用于冷保存应用的新材料.
主要方法:
- 通过聚合诱导颗粒组装 (PIPA) 合成ABC型triblock聚合物.
- CM结构的特征,包括球形 (AX0),Janus (AX1) 和高价值粒子 (AX2,AX3).
- 通过测量冰晶大小和增长速度来评估IRI活动.
- 修改聚合物块以调整温度依赖的IRI活动.
主要成果:
- CMs形成了各种结构 (AX0,AX1,AX2,AX3),由聚合物块长度控制.
- 较高的雅努斯粒子 (AX1) 分数与增强的IRI活性相关.
- 从27%增加到65%的AX1分数,平均谷粒大小减少了39.8%到10.9%.
- 冰晶生长速度在较高的AX1分数下降了58%.
- 对温度敏感的聚合物使可调节的IRI活动成为可能.
结论:
- 在CM中证明了取决于价值的IRI活动.
- 简斯粒子分数是有效IRI的关键因素.
- 两性聚合物纳米粒子为设计IRI材料提供了一个有前途的平台.
- 可调节的IRI活动是使用温度响应的聚合物块实现的.
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