Direct capture of plasmid DNA from non-clarified bacterial lysate using polycation-grafted monoliths
Hanora, A., Savina, I.N., Plieva, F.M., Izumrudov, V.A., Mattiasson, B. and Galaev, I.Y. (2006) Direct capture of plasmid DNA from non-clarified bacterial lysate using polycation-grafted monoliths Journal of Biotechnology, 123 (3). pp. 343-355. ISSN 0168-1656Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.jbiotec.2005.11.017
Monolith columns from macroporous polyacrylamide gel were grafted with polycations, poly(N,N-dimethylaminoethyl methacrylate) (polyDMAEMA), (2-(methacryloyloxy)ethyl)-trimethyl ammonium chloride (polyMETA) and partially quaternized polyDMAEMA prepared via treating polyDMAEMA-grafted columns with propylbromide. The polymer grafting degrees varied between 34 and 110%. The polycation-grafted monolithic columns are able to capture plasmid DNA directly from alkaline lysate of Escherichia coli cells. Due to the large pore size in macroporous monoliths the particulate material present in non-clarified feeds did not block the columns. The captured plasmid DNA was eluted with 1 M NaCl as particulate-free preparation with significantly reduced content of protein and RNA as compared to the applied lysate.
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