Immune responses of selected phagotopes from monoclonal antibodies of Burkholderia pseudomallei |
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| Authors: | Na-ngam Narisorn Kalambaheti Thareerat Ekpo Pattama Pitaksajjakul Pannamthip Jamornthanyawat Natsuda Chantratita Narisara Sirisinha Stitaya Thamlikitkul Visanu Chaicumpa Wanpen Yamabhai Montarop Ramasoota Pongrama |
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| Affiliation: | Department of Veterinary Medicine, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand. |
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| Abstract: | Random peptide libraries displayed by bacteriophage T7 and M13 were employed to identify mimotopes from 4 monoclonal antibodies (MAbs) specific to Burkholderia pseudomallei. Insert DNA sequences of bound phages selected from four rounds of panning with each MAb revealed peptide sequences corresponding to B. pseudomallei K96243 hypothetical protein BPSL2046, hypothetical protein BpseP_02000035, B. pseudomallei K96243 hypothetical protein BPSS0784, B. pseudomallei 1710b hypothetical protein BURPS1710b_1104, and B. cenocepacia H12424 TonB-dependent siderophore receptor, all located at the outer membrane. The immune responses from all selected phagotopes were significantly higher than that of lipopolysaccharide. The study demonstrates the feasibility of identifying mimotopes through screening of phage-displayed random peptide libraries with B. pseudomallei MAbs. |
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