Optimization of the refolding of recombinant human granulocyte-macrophage colony-stimulating factor immobilized on affinity sorbent
2014
A method for the production and purification of biologically active recombinant human granulocyte-macrophage colony-stimulating factor (rhGM-CSF), expressed in Escherichia coli, has been developed. Washing of an inclusion body fraction which allows the removal of numerous ballast proteins and on-column refolding of rhGM-CSF are specific characteristics of the method. The refolding efficiency reached 70%; the purity of the preparation constituted 95%. The biological activity was similar to those of other recombinant hGM-CSF analogs.
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