Abstract
We have developed micron-sized magnetic cellulose microspheres (MCMS), biospecifically coated with streptavidin (SA) using a novel cellulose binding domain and SA fusion protein, to harvest mRNA from eukaryotic cells and tissues. Biospecific connection between SA and MCMS exhibited significant advantages compared with traditional chemical coupling, including convenient and simple preparation, elimination of toxic compounds, and highly efficient extraction of a pure target molecule. To confirm compatibility, mRNA isolated from cell or tissue samples was used for amplification of housekeeping genes ( GAPDH and β-actin) and specific target genes (two fragments V H and V L from the variable fragments of IgG and the gene encoding GLP-1 receptor). Preliminary studies predict that this novel method has potential in future developments in target gene isolation and DNA manipulation.
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