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Streamlined preparation of genomic DNA in agarose plugs for pulsed-field gel electrophoresis. 2018

Linda Hicks, and Charlotte M van der Graaf, and Jacob Childress, and Emily Cook, and Karen Schmidt, and Frank Rosenzweig, and Eugene Kroll
Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA.

Genome analysis using pulsed-field gel electrophoresis (PFGE) has been used in applications ranging from typing bacterial strains to radiobiology to cancer research. While methods for running PFGE have been significantly improved since its invention, the method for preparing chromosomal DNA itself has remained essentially unchanged. This limits the applicability of PFGE, especially when analyses require many samples. We have streamlined sample preparation for routine applications of PFGE through the use of deep-well 48-well plates. Besides saving time, our protocol has the added advantage of reducing the volume of expensive reagents. Our improved protocol enables us to reduce throughput time and simplify the procedure, facilitating wider application of PFGE-based analyses in the laboratory.

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