PEGylated dendritic diaminocyclohexyl-platinum (Ⅱ) conjugates as pH-responsive drug delivery vehicle

来源 :中国微米纳米技术学会纳米科学技术分会第三届年会暨2014全国纳米生物与医学学术会议 | 被引量 : 0次 | 上传用户:dmf625
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
Environmentally-responsive peptide dendrimers loaded with drugs are suitable candidates for cancer therapy.In this study,we report the preparation and characterization of mPEGylated peptide dendrimer-linked diaminocyclohexyl platinum (Ⅱ) (dendrimer-DACHPt) conjugates as pH-responsive drug delivery vehicles for tumor suppression in mice.The DACHPt is similar to oxaliplatin and was linked to dendrimer via N,O-coordination;azido mPEG chains were conjugated to the dendrimers via a Cu(Ⅰ) catalyzed alkyne-azide click cycloaddition (CuAAC).
其他文献
Dissemination of circulating tumour cells(CTCs)to potential metastatic sites mostly occurs in the circulation system.Current chemotherapeutics that were originally designed to kill highly proliferatin
会议
Semiconductor nanocrystals(also known as quantum dots(QDs))are small nanoparticles with bulk-like crystalline structures with sizes that ranges from 2 nm to~10 nm(close to or smaller than the dimensio
本研究主要开展了基于纳米生物材料修饰的微电极阵列设计、制备和纳米效应研究,进行了脑神经信息电生理和神经化学物质的双模检测系统和无线低功耗神经信息IC芯片研制和测试研究,建立了离体培养神经细胞检测模型和帕金森大鼠动物检测模型,实现了对离体脑神经细胞和活体大鼠脑神经细胞动作电位、场电位电生理信号及多巴胺、抗坏血酸和葡萄糖等化学物质的高灵敏动态实时检测。
基质细胞衍生因子1(SDF-1,也称为CXCL12)主要是由骨髓基质细胞、内皮细胞等分泌的一种趋化因子,而其受体CXCR4在大多数白血病细胞表面高表达,因此,CXCR4/CXCL12轴可介导白血病细胞向骨髓基质中迁移及其与基质细胞的粘附,为白血病细胞提供促增殖、耐药等信号,是肿瘤细胞与其微环境相互作用的重要因子.
会议
Construction of stimuli-responsive controlled release system for targeted drug delivery to specific cells is essentially important for cancer therapy since most chemotherapeutics are severely toxic [1
Microscopy has become a truly enabling visualization technique in biological and biomedical sciences.Nonlinear optical (NLO) microscopy has gained much attention owing to its intrinsic 3D resolution c
会议
D-Peptides,as the enantiomers of the naturally occurring L-peptides,usually resist endogenous proteases and are presumably insensitive to most enzymes.But,it is unclear whether or how a phosphatase ca
会议
Poly[N-(2-hydroxypropyl)methacrylamide] (polyHPMA) and peptide dendritic polymer have been proved to be some of the leading candidates for delivery of anticancer drugs for cancer treatments,as their n
会议
制备了与不可降解医用金属(钛合金及钻合金)强界面结合的β-Ti、Sr1-HA、Sr0.5Ca0.5TiO3、TiO2二维及三维纳米构形表层.揭示了二维构形晶粒尺度及二维纳米晶粒化学组成对细胞附着、增殖、分化及ECM矿化的作用效应及调控机制,阐明了其化学组成对细菌及骨整合的作用效应.
The tumor extracellular environment is more acidic than normal tissues.Therefore,pH-dependent charge conversion systems could be used to realize efficient drug delivery.In this study,a multi-functiona