犬干擾素α4在CHO細胞中的穩(wěn)定表達
[Abstract]:In order to prepare highly active canine interferon 偽 4 (CaIFN- 偽 4), canine IFN- 偽 4 and green fluorescent protein (GFP) gene were ligated with two GGGGS pentapeptide flexible peptides to obtain the fusion gene of dog IFN- 偽 4 and GFP (CaIFN- 偽 4 GFP). The fusion gene was ligated with eukaryotic expression vector pLeGFP, and the recombinant expression plasmid pL-CaIFN- 偽 4-GFP, was constructed and co-transfected into 293FT cells with three other lentivirus plasmids (pC-Gp,pR-Rev and pC-VsvG). Recombinant lentivirus (vCaIFN- 偽 4-GFP).) was obtained by packaging Chinese hamster ovarian (CHO) cells were infected with recombinant lentivirus. CHO cells expressing CaIFN- 偽 4-GFP were cloned by flow cytometry and limited dilution. The green fluorescence of CHO cells was observed by fluorescence microscope. MDCK and MDB K cells were used to detect the antivesicular stomatitis virus activity of CHO cells, which were 1.39 脳 10 ~ 5 and 2.19 脳 104U/m L, respectively. In this study, the active canine interferon 偽 4 was successfully expressed by CHO cells, which laid an experimental foundation for the further development of a highly active canine interferon 偽 4 production system.
【作者單位】: 南京農(nóng)業(yè)大學動物醫(yī)學院;江蘇省農(nóng)業(yè)科學院獸醫(yī)研究所農(nóng)業(yè)部獸用生物制品工程技術(shù)重點實驗室國家獸用生物制品工程技術(shù)研究中心;
【基金】:國家重點研發(fā)計劃項目(2016YFD0501000) 公益性行業(yè)(農(nóng)業(yè))科研專項(201303042) 江蘇省農(nóng)業(yè)科技自主創(chuàng)新資金項目[CX(15)1065]
【分類號】:S858.292
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