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METHOD OF SURFACE MODIFICATION BY PROTEINS FOR ANALYTE PRECONCENTRATION FOR DESORPTION-IONIZATION MASS SPECTROMETRY TECHNIQUES AND FOR IMMUNOCHEMICAL ASSAYS
METHOD OF SURFACE MODIFICATION BY PROTEINS FOR ANALYTE PRECONCENTRATION FOR DESORPTION-IONIZATION MASS SPECTROMETRY TECHNIQUES AND FOR IMMUNOCHEMICAL ASSAYS
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机译:脱附-电离质谱法和免疫化学分析的分析物预浓缩用蛋白质进行表面修饰的方法
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摘要
A method for modification of solid substrates with proteins for efficient surface preconcentration of an analyte from multi-component samples before the detection based on desorption-ionization mass spectrometry and immunochemical assays. The claimed subject is a method of modification of surfaces used as substrates for desorption-ionization mass spectrometry and immunochemical assays. The method is based on electronebulization (electrospraying) of protein solution, depending on the intended application either enzymes, lectins, or antibodies. The formed charged electrospray is dried in real time by its passing through an evaporation compartment and the resulting beam of desolvated ions impacts onto the surface and binds to it firmly. Such modified surface can be then used for a selective interaction with an affinity partner of the deposited protein, its preconcentration or enzymatic modification followed by an analysis by means of desorption-ionization mass spectrometry or immunochemical assays.
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