Selection of a Single Chain Variable Fragment Antibody against Ivermectin from a Phage Displayed Library
文献类型: 外文期刊
作者: Wen, Shuang 1 ; Zhang, Xiao 1 ; Liu, Yuan 1 ; Zhang, Qingqing 1 ; Liu, Xianjin 1 ; Liang, Jiansheng 2 ;
作者机构: 1.Jiangsu Acad Agr Sci, Key Lab Food Qual & Safety Jiangsu Prov, Key Lab Food Safety Monitoring & Management, Minist Agr, Nanjing 210014, Peoples R China
2.Yangzhou Univ, Key Lab Crop Genet & Physiol Jiangsu Prov, Coll Biosci & Biotechnol, Yangzhou 225009, Jiangsu, Peoples R China
关键词: IVM;scFv;detection;phage displayed library
期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:5.279; 五年影响因子:5.269 )
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收录情况: SCI
摘要: Single chain variable fragment antibodies (scFvs) have considerable potential in immunological detection of pesticides, veterinary and other residues. In this study, a large human synthetic phage displayed library was used to select scFvs against ivermectin (IVM) by subtractive panning. After four rounds of panning, seven monoclonal phage particles capable of binding with the IVM were obtained. One of the identified novel anti-IVM scFv, hslVM8, was expressed in Escherichia coli HB2151 and purified with Ni metal ion affinity chromatography. Sodium dodecyl sulfate polyacry-lamine gel electrophoresis (SDS-PAGE) indicated that the relative molecular mass of hslVM8 was estimated at 28 kDa. The purified hslVM8 was used to develop a competitive indirect enzyme-linked immunosorbent assay (ci-ELISA) for IVM. The linear range of detection for standards in this ci-ELISA was approximately 0.1-5 μg/mL and 50% inhibition of control (IC_(50)) was 4.11 μg/mL for IVM. These results showed promising applications of hslVM8 for detecting IVM in agricultural and environmental matrices.
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