Inventors: Chen LX, Wang X, Wang LY, He XW, Zhang YK, Wang YF
Patent Title: Method for preparing protein magnetic blotting nanospheres
Publication date: 2009
Publication number: CN101347721

Abstract: The invention relates to a preparation method of a protein magnetic imprinting nano sphere, in particular to a preparation method of a protein magnetic imprinting nano sphere which takes one of hemoglobin, muramidase or serum protein as template molecules; the preparation method includes the following steps: synthesizing magnetic nano particles which are Fe3O4 nano particles covered with silicon dioxide on the surfaces; carrying out silanization to the amino-groups on the surface of the magnetic sphere; using glutaric dialdehyde to connect protein; using silylation agent to fix the space structure of template protein; alkaline eluting the protein on the surface of the magnetic sphere to form imprinting sites. The hemoglobin, muramidase or serum protein magnetic nano imprinting polymer sphere prepared by the invention combines the precise and specific identification property of molecular imprinting and the quick separation property of the magnetic nano sphere under the action of an external magnetic field, integrates the advantages of molecular imprinting and the magnetic nano sphere, avoids complex centrifugation operation, plays vital roles in the separation of cells, protein and nucleic acid, the detection of biomolecules, tumor diagnosis and medicine targeting therapy and has promising application prospect in the field of isolation analysis.
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