...
首页> 外文期刊>Journal of biomaterials science >In vivo imaging/detection of MRSA bacterial infections in mice using fluorescence labelled polymeric nanoparticles carrying vancomycin as the targeting agent
【24h】

In vivo imaging/detection of MRSA bacterial infections in mice using fluorescence labelled polymeric nanoparticles carrying vancomycin as the targeting agent

机译:在使用荧光标记的聚合物纳米粒子作为靶向剂的荧光标记的聚合物纳米粒子的小鼠MRSA细菌感染的体内成像/检测

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

This study aims to develop fluorescence labelled polymeric nanoparticle (NP) carrying vancomycin as the targeting agent for in vivo imaging of Methicillin-resistant Staphylococcus aureus bacterial infections in animal models. Maleimide functionalized 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[maleimide (polyethylene glycol)-2000] as the main was carrier matrix to prepare the NPs. A fluorescence probe, namely, poly[9,9 '-bis (6 ''-N,N,N-trimethylammonium) hexyl) fluorene-co-alt-4,7-(2,1,3-benzothiadiazole) dibromide] was encapsulated within these NPs by ultrasonication successfully. UV-Vis spectro- photometry of the NPs showed the characteristic shifting on the peak of conjugated polymers indicating successful packaging of this compound with lipid bilayers in nanoscales. Zeta-sizer and TEM analysis showed that the prepared NPs have a diameter of 80-100 nm in a narrow size distribution. Thiolated vancomycin was synthesized and attached to the NPs as the targeting agent. FTIR and MALDI-TOF spectroscopy analysis confirmed the immobilization. The specific targeting properties of the vancomycin conjugated NPs to the target bacteria were first confirmed in in vitro bacterial cultures in which Escherichia coli was the non-target bacteria - using confocal microscopy and TEM. Imaging of bacterial infections in vivo was investigated in mice model using a non-invasive live animal fluorescence imaging technique. The results confirmed that bacterial infections can be detected using these novel polymeric NPs carrying fluorescence probes for imaging and vancomycin as the targeting agent - in vivo successfully.
机译:该研究旨在开发荧光标记的聚合物纳米颗粒(NP),其携带万古霉素作为动物模型中耐甲氧脲抗金黄色葡萄球菌细菌感染的体内成像的靶向剂。马来酰亚胺官能化1,2- Distearoyl-Sn-甘油-3-磷乙醇胺-N- [马来酰亚胺(聚乙二醇)-2000]作为主要是载体基质以制备NPS。荧光探针,即聚[9,9'-Bis(6''-N,N,N-三甲基铵)己基)芴 - 共14,7-(2,1,3-苯并噻唑)二溴化物]通过超声处理成功地包裹在这些NPS内。 NPS的UV-VI光谱 - 光度测定表明,缀合物的峰值上的特征移位,其表明该化合物与纳米粒子中的脂质双层成功包装。 Zeta-sizer和TEM分析表明,制备的NPS在窄尺寸分布中的直径为80-100nm。合成硫醇化万古霉素并作为靶向剂连接到NPS上。 FTIR和MALDI-TOF光谱分析证实了固定化。首先在体外细菌培养物中首先在体外细菌培养物中证实了万古霉素缀合的NPS的具体靶向性质,其中使用共聚焦显微镜和TEM是非靶细菌。使用非侵入性活的动物荧光成像技术研究小鼠模型中体内细菌感染的成像。结果证实,可以使用这些新型聚合物NPS携带荧光探针作为靶向剂的荧光探针作为靶向剂来检测细菌感染 - 体内成功。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号