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Second Military Medical College, Shanghai

Residual host cell DNA in plasmid DNA is quantitated by gene probe

Published in Medicine and Law Weekly, May 19th, 2006

A 16S rRNA gene probe quantitates residual host cell DNA in pharmaceutical-grade plasmid DNA.

"The development and widespread use of DNA-based vaccination against infectious pathogens have been a great triumph of medical science. Quality control of DNA vaccines as biopharmaceutical productions is a problem to solve. Residual genomic DNA of engineering bacteria has been identified as a potential risk factor, so whose level must be controlled under the regulatory standards," scientists in China note.

"We report a dot-blot hybridization method to detect residual host cell DNA in purified DNA vaccines," announced Kai-Yu Wang and colleagues at the Second...

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