TY - JOUR T1 - Porcine IFN-• is Biologically Active and Secreted in the Yeast Pichia pastoris Expression System AU - He, Dongsheng AU - Ning, Zhangyong AU - Yu, Xiaoli AU - Liao, Ming AU - Li, Kangning AU - Zhao, Yanzong JO - Journal of Animal and Veterinary Advances VL - 10 IS - 18 SP - 2450 EP - 2455 PY - 2011 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2011.2450.2455 UR - https://makhillpublications.co/view-article.php?doi=javaa.2011.2450.2455 KW - Porcine interferon-• (PoIFN-•) KW -Pichia pastoris KW -expression KW -activity KW -cells KW -biologically active AB - Porcine Interferon (PoIFN) is a multifunctional secretory protein produced by animal immune cells. IFN signaling activates host cells resulting in anti-viral and -tumor immune regulation in addition to other biological functions. Here, the coding region of PoIFN-• was amplified from porcine genomic DNA by Polymerase Chain Reaction (PCR) and was cloned into the yeast Pichia pastoris expression system. This resulted in high levels of gene expression. Furthermore, expression of PoIFN-• was successfully detected by Western-blot. The relative molecular weight of the product was 25 and 27 kDa. The recombinant PoIFN-• exhibited cross-species antiviral activity in Marc-145 and BHK-21 mammalian cell lines. In summary, the results demonstrate that recombinant PoIFN-• cloned into P. pastoris is expressed, secreted and biologically active in mammalian cells. ER -