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    • 6. 发明授权
    • Magnetic particles, method for obtaining same and uses for separating molecules
    • 磁性粒子,其获得方法和用于分离分子的方法
    • US06521341B1
    • 2003-02-18
    • US09582352
    • 2000-09-21
    • Abdelhamid ElaissariChristian PichotBernard Mandrand
    • Abdelhamid ElaissariChristian PichotBernard Mandrand
    • G11B516
    • H01F1/111B03C1/01G01N33/5434G01N2446/20G01N2446/86Y10S428/90Y10T428/2991Y10T428/2998
    • The invention concerns magnetic and heat-sensitive particles having a predetermined size between 0.05 and 10 &mgr;m, each particle comprising: an inner composite core consisting of a solid organic or inorganic particle, containing within it a magnetic filler; an outer coati based on a polymer capable of interacting with at least a biological molecule, the outer polymer is heat-sensitive and has a predetermined low critical solubility temperature (LCST) ranging between 10 and 100° C. and preferably between 20 and 60° C. The invention also concerns methods for obtaining said particles and their uses. The particles are characterized in that there is an intermediate layer between the inner core and the outer layer isolating said inner core magnetic filler with respect to said functionalized outer layer. Said invention is particularly useful for separating proteins and/or nucleic acids.
    • 本发明涉及具有0.05-10μm之间的预定尺寸的磁性和热敏颗粒,每个颗粒包括:由固体有机或无机颗粒组成的内部复合芯,其中含有磁性填料; 基于能够与至少一种生物分子相互作用的聚合物的外涂层,外部聚合物是热敏感的,并且具有在10和100℃之间,优选在20和60℃之间的预定的低临界溶解温度(LCST) 本发明还涉及获得所述颗粒及其用途的方法。 颗粒的特征在于,在内芯和外层之间存在相对于所述官能化外层隔离所述内芯磁性填料的中间层。 所述发明对于分离蛋白质和/或核酸特别有用。