公开(公告)号：US09138491B2

公开(公告)日：2015-09-22

申请号：US14110138

申请日：2011-04-07

申请人： Moon-Hee Sung ,  Yong Taik Lim ,  Young-Woock Noh ,  Il Han Lee ,  Hyun Min Kim

发明人： Moon-Hee Sung ,  Yong Taik Lim ,  Young-Woock Noh ,  Il Han Lee ,  Hyun Min Kim

IPC分类号： A61K49/12 ,  A61B5/055 ,  A61K49/18

CPC分类号： A61K49/126 ,  A61K49/1863 ,  A61K49/1872

摘要： The present invention relates to a nano-composite containing anionic and cationic polymers and a method for preparing thereof, and more particularly to a poly-gamma-glutamic acid (γ-PGA)/chitosan/manganese iron oxide nanoparticle composite prepared by encapsulating iron oxide-based nanoparticles in a γ-PGA/chitosan polymer composite using the ionic self-assembly properties of poly-gamma-glutamic acid (γ-PGA) and chitosan, which are biocompatible polymer materials, and to a method for preparing thereof.The present invention provides a magnetic resonance imaging nano-contrast agent based on a nanoparticle composite including iron oxide-based nanoparticles encapsulated in a self-assembled composite of anionic poly-gamma-glutamic acid (γPGA) and cationic chitosan. The iron oxide-based nanoparticles encapsulated in the composite interact with each other to produce a synergistic effect on the amplification of magnetic resonance signals, and thus have an relatively excellent contrast effect compared to when they exist as single particles.

摘要翻译： 本发明涉及含有阴离子和阳离子聚合物的纳米复合物及其制备方法，更具体地涉及通过包封氧化铁制备的聚-γ-谷氨酸（γ-PGA）/壳聚糖/锰铁氧体纳米颗粒复合材料 基于聚-γ-谷氨酸（γ-PGA）和壳聚糖的离子自组装性质的γ-PGA /壳聚糖复合材料的生物相容性聚合物材料的制备方法。 本发明提供一种基于纳米颗粒复合材料的磁共振成像纳米造影剂，其包括封装在阴离子聚-γ-谷氨酸（γPGA）和阳离子壳聚糖的自组装复合物中的基于氧化铁的纳米颗粒。 封装在复合材料中的基于氧化铁的纳米颗粒彼此相互作用以对磁共振信号的扩增产生协同效应，因此与作为单个颗粒存在时相比具有相对优异的对比效果。

公开(公告)号：US20140170077A1

公开(公告)日：2014-06-19

申请号：US14110138

申请日：2011-04-07

申请人： Moon-Hee Sung ,  Yong Taik Lim ,  Young-Woock Noh ,  Il Han Lee ,  Hyun Min Kim

发明人： Moon-Hee Sung ,  Yong Taik Lim ,  Young-Woock Noh ,  Il Han Lee ,  Hyun Min Kim

IPC分类号： A61K49/12

CPC分类号： A61K49/126 ,  A61K49/1863 ,  A61K49/1872

摘要： The present invention relates to a nano-composite containing anionic and cationic polymers and a method for preparing thereof, and more particularly to a poly-gamma-glutamic acid (γ-PGA)/chitosan/manganese iron oxide nanoparticle composite prepared by encapsulating iron oxide-based nanoparticles in a γ-PGA/chitosan polymer composite using the ionic self-assembly properties of poly-gamma-glutamic acid (γ-PGA) and chitosan, which are biocompatible polymer materials, and to a method for preparing thereof.The present invention provides a magnetic resonance imaging nano-contrast agent based on a nanoparticle composite including iron oxide-based nanoparticles encapsulated in a self-assembled composite of anionic poly-gamma-glutamic acid (γPGA) and cationic chitosan. The iron oxide-based nanoparticles encapsulated in the composite interact with each other to produce a synergistic effect on the amplification of magnetic resonance signals, and thus have an relatively excellent contrast effect compared to when they exist as single particles.

摘要翻译： 本发明涉及含有阴离子和阳离子聚合物的纳米复合物及其制备方法，更具体地涉及通过包封氧化铁制备的聚-γ-谷氨酸（γ-PGA）/壳聚糖/锰铁氧体纳米颗粒复合材料 基于聚-γ-谷氨酸（γ-PGA）和壳聚糖的离子自组装性质的γ-PGA /壳聚糖复合材料的生物相容性聚合物材料的制备方法。 本发明提供一种基于纳米颗粒复合材料的磁共振成像纳米造影剂，其包括封装在阴离子聚-γ-谷氨酸（γPGA）和阳离子壳聚糖的自组装复合物中的基于氧化铁的纳米颗粒。 封装在复合材料中的基于氧化铁的纳米颗粒彼此相互作用以对磁共振信号的扩增产生协同效应，因此与作为单个颗粒存在时相比具有相对优异的对比效果。

公开(公告)号：US09623121B2

公开(公告)日：2017-04-18

申请号：US13885126

申请日：2011-11-18

申请人： Moon-Hee Sung ,  Yong Taik Lim ,  Young-Woock Noh ,  Il Han Lee

发明人： Moon-Hee Sung ,  Yong Taik Lim ,  Young-Woock Noh ,  Il Han Lee

IPC分类号： A61B5/055 ,  A61K49/00 ,  G01N21/64

CPC分类号： A61K49/0054 ,  A61K49/0034 ,  A61K49/0056 ,  G01N21/6428 ,  G01N21/6456

摘要： The present invention relates to an optical imaging probe for detecting a sentinel lymph node, which contains a complex of poly-gamma-glutamic acid and an optical imaging dye, and more particularly to an optical imaging probe for detecting a sentinel lymph node, which contains a poly-gamma-glutamic acid/optical imaging dye complex that, when injected subcutaneously in vivo, remains in the sentinel lymph node for a relatively long period of time and has a low tendency to migrate to other lymph nodes. The present invention provides a poly-gamma-glutamic acid/fluorescent dye complex, which contains no radiopharmaceutical and is harmless to the human body. The use of the poly-gamma-glutamic acid/fluorescent dye complex makes it possible to accurately detect the position of a sentinel lymph node in real time without concerns about radioactive contamination.