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Updated: Jun 3, 2025

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密切认识充电的多 (l-氨酸) 衍生品用于防剂

Binlin Chen¹, Yueqi Deng¹, Qingjing Niu¹

¹School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, China.

Langmuir : the ACS journal of surfaces and colloids

|January 8, 2025

概括

研究人员开发了新的防聚合物,发现zwitterionic poly ((S-carboxymethyl-l-methionine sulfonium) (PMetA) 具有优越的冰再结晶抑制 (IRI) 和冷保护性质.

科学领域:

聚合物化学聚合物化学
生物物理学的生物物理.
材料科学材料科学材料科学

背景情况:

冰的形成在工业和生物应用中带来了挑战.
防剂及其机制对于冷保护和保存至关重要.
了解冰再结晶抑制 (IRI) 是开发有效冷保护剂的关键.

研究的目的:

合成和评估新型的聚甲氨酸衍生物作为防剂.
为了研究聚合物衍生品和IRI活动之间的结构-活性关系.
阐明开发的聚合物的防机制.

主要方法:

合成聚-S-碳甲基-l-氨酸硫 (PMetA),聚-S-甲基-l-氨酸硫化物 (PMetM) 和聚-S-碳胺甲基-l-氨酸硫化物 (PMetAM).
冰再结晶抑制 (IRI) 活动的评估.
利用低场核磁共振 (NMR) 和差分扫描热量计 (DSC) 来研究防机制.
对细胞相容性和冷保护效率的评估.

主要成果:

PMetA显示出最高的IRI活性 (27.0 ± 3.9%在10毫克毫升-1时).
根据NMR和DSC,IRI活动与键断裂的激活能量相关,如NMR和DSC所示.
在10.0 mg mL-1.1时,PMetA显示出良好的细胞兼容性和冷保护效率.

结论:

兹维特里尼克PMetA是一种强大的抗剂,具有显著的IRI活性.
这些发现提供了对抗作用的分子机制的见解.
这些聚甲氨酸衍生物对开发先进的冷保护剂具有前途.

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