Purification of pDNA Vaccine Against MDR Tuberculosis Using CIM Monoliths

Zunyang Ke, Yu Wang and Zhongming Li

Anion-exchange chromatography is a key capture step in downstream processing plasmid DNA (pDNA). Separation of pDNA using traditional particle-based anion-exchange supports is usually slow and has a low capacity for pDNA due to steric exclusion effects. Due to convective mass transfer properties, and large flow-through channels for binding large biomolecules, monoliths have been shown to provide a fast and efficient alternative for pDNA purification. This study describes the use of monoliths for purification of a therapeutic pDNA vaccine against multidrug resistant tuberculosis (MDR TB).

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