Supramolecular hydrogels of self-assembled zwitterionic-peptides

来源 :中国化学快报(英文版) | 被引量 : 0次 | 上传用户:seraph_gigi
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Zwitterionic polymer materials have been extensively studied,but zwitterionic peptides supramolecular hydrogel materials are rarely studied.In this study,the preparation of two zwitterionic hydrogels using self-assembled peptides were reported.The hydrogels could be fabricated easily by changing the temper-ature or enzyme catalysis in a short time.And the differences in structure and function of the zwitterion peptide hydrogels caused by the two preparation methods were also be compared.We found that the hy-drogel prepared by enzyme induced self-assembly has better solubility and lower cytotoxicity than that prepared by the heating-cooling process.The result showed the enzyme induced self-assembly way to form zwitterionic peptides supramolecular hydrogel materials could have further biomedical applications.
其他文献
我国社会正面临着人口老龄化问题.随着我国老年人口的不断增加和老年慢性疾病发生率的快速攀升,对衰老和相关重大慢性疾病的发生机制和干预研究已成为科技创新前沿热点和国家重大需求.本文就近年来我国在脑衰老和神经退行性疾病研究领域的进展进行综述,包括脑衰老与神经退行性疾病的发生机制、神经退行性疾病的生物标志物和早期预警、神经退行性疾病的干预策略等,概述我国脑衰老研究的新动态,并展望未来.
基因组DNA携带着控制细胞生长、分化的重要生命信息,其结构及功能的相对稳定是物种得以生存延续的前提与保障.越来越多的研究表明,DNA损伤修复能力的下降将导致基因组不稳定性的增加,最终成为诱导衰老及其相关疾病发生的关键因素之一.本文在综述基因组稳定性与衰老之间关系的基础上,探讨通过靶向DNA修复来干预衰老的发展趋势及其发展前景.
In this work,hollow Fe2O3/Co3O4 microcubes have been successfully synthesized through a hydrother-mal method followed by an annealing process using metal-organic framework of Prussian blue as a soft template.The morphologies,microstructures,surface area a
细胞衰老是以不可逆转的细胞周期停滞为特征,是一个程序化且同时受环境因素影响的生理过程.大分子损伤与修复失衡,如DNA损伤和端粒功能障碍、原癌基因过度激活及其他外源刺激,可导致细胞衰老的发生.衰老细胞的特征之一是产生衰老相关分泌表型(senescence-associated?secretory?phenotype,SASP),并由此影响细胞间通讯,达到促进炎症反应、组织分化、创面愈合、抑制肿瘤及衰老细胞的清除等目的.本文以血管内皮细胞衰老为例,探讨SASP通过影响细胞通讯参与细胞损伤、修复,阐述其在心血管
Whilst most bioorthogonal reactions focus on targeting binding-site cysteine residues,proximity-induced reactivity effect ensures that reaction also occurs at nucleophilic lysine residues.We report one example here that the propargylated-sulfonium center
Spatial isolation of different functional sites at the nanoscale in multifunctional catalysts for steering reaction sequence and paths remains a major challenge.Herein,we reported the spatial separation of dual-site Au and RuO2 on the nanosurface of TiO2
Herein,a rapid alkenylation of quinoxalin-2(1H)-ones enabled by a combination of Mannich-type reaction and solar photocatalysis is demonstrated.A wide range of functional groups are compatible,affording the corresponding products in moderate-to-good yield
美国高度重视生物医药创新发展,政府、医药企业和风险投资机构等对生物医学和新药研发进行了长期大量的投入,在医学研究、药物研发、新药批准等方面位居世界前列,其医药创新与研发趋势是全球医药行业发展的风向标.本文总结美国联邦政府、地方政府、企业及风险投资机构对生物医药研究的研发投入、支持方式和重点领域,分析美国生物医药创新发展趋势,对我国生物医药研发领域的发展提出建议.
An efficient and practical methods for the synthesis of carbamoyl quinoline-2,4-diones via the reaction of ortho-cyanoarylacrylamides with oxamic acids was described.This cyclic reaction could be performed efficiently under metal free conditions.Various p
高校和研究机构的青年博士群体承担着科研创新的使命,是具有高成长性的青年科技人才的主力军.本文以从事基础研究工作、40岁以下的博士群体为研究对象,探讨高成长性青年科技人才的结构分布特征,分析其存在的结构性问题,为我国青年科技人才的引进、培养和发展提出相应的建议.