申请人:Massachusetts Institute of Technolgoy
公开号:US20140212335A1
公开(公告)日:2014-07-31
Nanoparticles as described herein are configured to bind to bacterial contaminants, such as Gram positive bacteria, Gram negative bacteria, and endotoxins. The nanoparticles include a core comprising a magnetic material; and a plurality of ligands attached to the core. The ligands include, for example, bis(dipicolylamine) (“DPA”) coordinated with a metal ion, e.g., Zn
2+
or Cu
2+
, to form, e.g., bis-Zn-DPA or bis-Cu-DPA, which can bind to the bacterial contaminants. The nanoparticles can be included in compositions for use in methods and systems to separate bacterial contaminants from liquids, such as liquids, such as blood, e.g., whole or diluted blood, buffer solutions, albumin solutions, beverages for human and/or animal consumption, e.g., drinking water, liquid medications for humans and/or animals, or other liquids.
本文所描述的纳米颗粒被配置为结合细菌污染物,例如革兰氏阳性菌、革兰氏阴性菌和内毒素。纳米颗粒包括一个核心,其中包含磁性材料;和附着在核心上的多种配体。配体包括例如通过金属离子(例如Zn2+或Cu2+)配位的双(二吡啶基)胺(“DPA”),形成例如双-Zn-DPA或双-Cu-DPA,可以结合细菌污染物。纳米颗粒可以包含在用于从液体中分离细菌污染物的方法和系统中使用的组合物中,例如血液(例如全血或稀释血液)、缓冲溶液、白蛋白溶液、人类和/或动物消费的饮料(例如饮用水)、人类和/或动物的液体药物或其他液体中。