沙奎那韦脂质体、壳聚糖多功能纳米粒子
西安齐岳生物科技有限公司是国内的纳米晶体生产制造商,我们提供定制合成多种光电材料,供应多孔有机框架POF,纳米晶体;发光导电纳米晶体;壳聚糖基多功能纳米晶体;环糊精复合纳米粒子;血浆蛋白-脂溶性纳米晶体;介孔二氧化硅包覆金纳米颗粒;核苷酸纳米脂质体剂
Fe_3O_4/奥曲肽修饰的双靶向纳米脂质体;美洛昔康纳米晶体;冻融纳米晶体的脂质体;荧光CdSe复合脂质体;洛伐他汀纳米脂质体;多西紫杉醇靶向纳米
沙奎那韦脂质体、壳聚糖多功能纳米粒子
壳聚糖基多功能纳米载体系统, 并探讨了其体外释药性质. 合成了甲氨蝶呤-壳聚糖偶联物(MTX-CS), 甲氨喋呤(MTX)的取代度为6.3%; MTX-CS具有两亲性, 在水性介质中能自组装形成纳米粒子, 平均粒径为(269.5±18.3) nm, zeta电位为(25.7±0.9) mV. MTX-CS纳米粒子能包载抗生成药Combretastatin A-4(CA-4), 当载体材料投料比为1∶4 时, 载药量为15.7%, 包封率为62.8%. 体外释放实验结果显示, CA-4释放较快, MTX释放缓慢, 有利于发挥的协同抗作用.
The preparation method of a chitosan-based multifunctional nano-drug carrier system and its drug release properties were reported. Methotrexate conjugated chitosan(MTX-CS) was synthesized and characterized, and the substitution degree of MTX was 6.3%. MTX-CS had amphiphilic property, thus could form self-assembled nanoparticles in aqueous medium. The mean diameter of MTX-CS nanoparticles was (269.5±18.3) nm, and the zeta potential was (25.7±0.9) mV. MTX-CS nanoparticles could effectively load antitumor drugcombretastatin A-4(CA-4); CA-4 loading content and entrapment efficiency were 15.7% and 62.8%, respectively, when the feed mass ratio of drug and carrier was 1∶4. The in vitro release experiment shows that CA-4 rapidly releases from MTX-CS nanoparticles, but MTX release rate obviously slows, which is favorable for the combination tumor therapy.
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