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Lopes, André M.; Magalhães, Pérola O.; Mazzola, Priscila G.; Rangel-Yagui, Carlota O.; de Carvalho, João C. M.; Penna, Thereza C.V.; Pessoa Jr, Adalberto
Biotechnology progress, November/December 2010, Letnik: 26, Številka: 6Journal Article
In biotechnology, endotoxin (LPS) removal from recombinant proteins is a critical and challenging step in the preparation of injectable therapeutics, as endotoxin is a natural component of bacterial expression systems widely used to manufacture therapeutic proteins. The viability of large‐scale industrial production of recombinant biomolecules of pharmaceutical interest significantly depends on the separation and purification techniques used. The aim of this work was to evaluate the use of aqueous two‐phase micellar system (ATPMS) for endotoxin removal from preparations containing recombinant proteins of pharmaceutical interest, such as green fluorescent protein (GFPuv). Partition assays were carried out initially using pure LPS, and afterwards in the presence of E. coli cell lysate. The ATPMS technology proved to be effective in GFPuv recovery, preferentially into the micelle‐poor phase (KGFPuv < 1.00), and LPS removal into the micelle‐rich phase (%REMLPS > 98.00%). Therefore, this system can be exploited as the first step for purification in biotechnology processes for removal of higher LPS concentrations. © 2010 American Institute of Chemical Engineers Biotechnol. Prog., 2010
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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