Abstract
Recombinant bovine granulocyte-macrophage colony-stimulating factor (rboGM-CSF) was produced by the baculovirus-silkworm expression system. It was purified to 98% by (NH4)2SO4, followed by a three-step column chromatography with silica gel, ion exchange resin and a metal chelate column. The specific activity of purified rboGM-CSF was 1.6–6.3 × 106 ED50 mg−1. By this method, the specific activity was raised 160-fold and 21% of the expressed rboGM-CSF was recovered.
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Acknowledgments
This work was supported by two Grants: the Recombinant Cytokine Project (RCP2002-1310) and the Insect Factory Project (No. 3106), provided by the Ministry of Agriculture, Forestry, and Fisheries of Japan.
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Nagaya, H., Kanaya, T., Tobita, Y. et al. Development of efficient method for purified recombinant bovine granulocyte-macrophage colony-stimulating factor production with baculovirus-silkworm gene expression system. Biotechnol Lett 30, 41–45 (2008). https://doi.org/10.1007/s10529-007-9506-3
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DOI: https://doi.org/10.1007/s10529-007-9506-3