抗紅斑丹毒絲菌的rSpaA蛋白豬源單鏈抗體庫構(gòu)建及單鏈抗體淘選
[Abstract]:Extraction of total RNA, from spleen lymphocytes of pigs immunized with rSpaA and reverse transcription synthesis of cDNA. using RT PCR technique Degenerate primers were designed to amplify the fragments of heavy chain variable region (VH) and light chain variable region (VL) of antibody. By means of overlapping extension PCR, VH and VL were linked with Linker to form recombinant single chain antibody (hereinafter referred to as sc Fv) gene fragment). The sc Fv gene was ligated to the phagocyte vector p Comb3Xss,. The recombinant vector was electrotransformed into the host strain XL1-Blue, and rescued by auxiliary bacteriophage M13KO7. The porcine phage scFv library was obtained and the library capacity was about 2.5 脳 106. Using rSpaA as the target antigen, 8 positive clones with good specificity were obtained by immuno-affinity screening. The results can provide a new way for the preparation of recombinant sc Fv against erysipelas and provide a material basis for the immunoassay and comprehensive control of porcine erysipelas.
【作者單位】: 湖南農(nóng)業(yè)大學(xué)動(dòng)物醫(yī)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(31272652) 現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系建設(shè)專項(xiàng)(CARS 46 42)
【分類號(hào)】:S858.28
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