相关实验视频

Updated: Jul 17, 2025

Activation and Conjugation of Soluble Polysaccharides using 1-Cyano-4-Dimethylaminopyridine Tetrafluoroborate CDAP

Activation and Conjugation of Soluble Polysaccharides using 1-Cyano-4-Dimethylaminopyridine Tetrafluoroborate CDAP

Published on: June 14, 2021

库马林功能化的多糖化合物衍生物的增强生物活性:化学修饰和活性评估

Qing Li¹, Yunhui Yang², Yijian Li³

¹Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.

International journal of biological macromolecules

|September 6, 2023

概括

用氨酸对天然多糖的化学修饰显著增强了它们的抗氧化,抗真菌和抗菌特性. 这些新型氨酸多糖衍生物显示出农业和医药应用的潜力,没有观察到细胞毒性.

科学领域:

生物化学生物化学
材料科学材料科学材料科学
有机化学有机化学

背景情况:

自然的多糖提供可再生资源,但具有有限的生物活性.
化学修饰是一种提高多糖的功能的一种策略.
库马林衍生物以其多样化的生物活性而闻名.

研究的目的:

合成新型的多糖衍生物,其中包含氨酸部分.
评估增强的生物活性,包括抗氧化,抗真菌和抗菌性质.
评估这些衍生品在各种应用中的潜力.

主要方法:

合成了三个系列的多糖衍生物与库马林功能化.
使用DPPH,ABTS基离子和超氧化基清除方法测定抗氧化活性.
对植物病原体和特定细菌菌株的抗真菌和抗菌活性的评估.
使用RAW 264.7细胞系进行细胞毒性评估.

主要成果:

与原生多糖相比,库马林多糖衍生物具有显著改善的抑制特性.
观察到强烈的激素清除活性,IC50值在0.03-15.9μg/mL范围内.
在抑制植物病原体生长 (60.0-93.6%的抑制) 和对S. aureus,大肠杆菌和V. harveyi显著的抗菌活性方面表现出高效.
在测试度下,RAW 264.7细胞中没有检测到细胞毒性.

结论:

用氨酸对多糖的化学修饰有效地增强了它们的生物活性.
合成的库马林多糖衍生物显示出有前途的抗氧化,抗真菌和抗菌潜力.
这些衍生物代表了一类有价值的化合物,可用于农业和医学领域的开发.

关键词:

化学修饰是一种化学修饰.库马林是一种氨酸.多糖是一种多糖化合物.

更多相关视频

Preclinical Assessment of the Bioactivity of the Anticancer Coumarin OT48 by Spheroids, Colony Formation Assays, and Zebrafish Xenografts

Preclinical Assessment of the Bioactivity of the Anticancer Coumarin OT48 by Spheroids, Colony Formation Assays, and Zebrafish Xenografts

Published on: June 26, 2018

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults

Published on: April 22, 2022

相关概念视频

Structure-Activity Relationships and Drug Design

Structure-Activity Relationships and Drug Design

Drug design is a dynamic field that involves discovering and developing new medications based on specific biological targets. This process heavily relies on structure-activity relationships (SAR) and quantitative structure-activity relationships (QSAR) to guide the design and optimization of efficient drugs.
SAR studies the intricate relationship between a drug's chemical structure and biological activity. It focuses on understanding how modifications to a drug's structure can influence...

Biosynthesis of Polysaccharides

Biosynthesis of Polysaccharides

Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...

Drug Metabolism: Phase II Reactions

Drug Metabolism: Phase II Reactions

Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...