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    • 4. 发明申请
    • SYSTEMS AND METHODS FOR QUANTITATIVE ANALYTE TRANSFER
    • 定量分析转移的系统和方法
    • WO2010017109A1
    • 2010-02-11
    • PCT/US2009/052460
    • 2009-07-31
    • PROTEIN FOREST, INC.PLUSKAL, Malcolm, G.MILLER, ThomasDASCH, James
    • PLUSKAL, Malcolm, G.MILLER, ThomasDASCH, James
    • G01N27/447G01N33/558
    • G01N27/4473G01N27/44747Y10T428/249981
    • Systems and methods for enhancing quantitative transfer of analytes from an electrophoretic gel (12) to an adsorptive substrate (14) are provided. A preferred embodiment provides an improved transfer system (10) and method that reduces "blow through" of low molecular weight analytes and increases the adsorption of low molecular weight, for example proteins of about 3OkDa or less compared to conventional transfer techniques. It has been discovered that using a secondary porous backing membrane (16) in conjunction with an adsorptive membrane (14) such as nitrocellulose or polvinylidene fluoride increases the efficiency of analyte interaction with the adsorption membrane compared to ' transfers techniques using the adsorption membrane without the secondary backing membrane. This improvement of quantitative analyte transfer efficiency facilitates a wider range of detection processes, such as direct analysis by MALDI mass spectrometry than in earlier applications of the process without the secondary backing membrane.
    • 提供了用于增强分析物从电泳凝胶(12)到吸附性基质(14)的定量转移的系统和方法。 优选的实施方案提供了改进的转移系统(10)和方法,其减少了低分子量分析物的“吹穿”,并增加了低分子量的吸附,例如与常规转移技术相比,约30kDa或更少的蛋白质。 已经发现,与使用不使用吸附膜的吸附膜的转移技术相比,使用辅助多孔背衬膜(16)与吸附膜(14)如硝酸纤维素或聚偏二氟乙烯结合提高分析物与吸附膜的相互作用的效率 二次背衬膜。 定量分析物转移效率的这种改进有助于更广泛的检测过程,例如通过MALDI质谱法的直接分析,而不是先前没有第二背衬膜的方法的应用。