Protein Expr Purif
Hefei National Laboratory for Physical Sciences at Microscale, Hefei, China.
Published: June 2012
Interleukin (IL)-10 is an anti-inflammatory cytokine that could be potentially applied for clinical therapy. However, its short circulating half-life in the serum limits its clinical applications. In this study, we designed a fusion protein containing human IL-10 and an IgG Fc fragment (hIL-10/Fc), and expressed it in Pichia pastoris. This hIL-10/Fc fusion protein was purified from the culture supernatant using MabSelect affinity chromatography and size-exclusion chromatography. The hIL-10/Fc yield was about 5mg/L in shake flasks, with purity exceeding 95%. In addition, the hIL-10/Fc fusion protein suppressed the phytohemagglutinin-induced IFN-γ production in human peripheral blood mononuclear cells. Pharmacokinetic study also revealed that hIL-10/Fc has a prolonged circulating half-life of about 30h in rats. More importantly, the hIL-10/Fc fusion protein displayed highly specific biological activity, which was slightly higher than that of the commercial recombinant human IL-10 (rhIL-10). Therefore, P. pastoris is useful in the large-scale production of hIL-10/Fc fusion protein for both research and therapeutic applications.
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http://dx.doi.org/10.1016/j.pep.2012.03.012 | DOI Listing |
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