title: Phage display identifies an Eastern equine encephalitis virus glycoprotein E2-specific B cell epitope.
abstract: The present study identified a linear B-cell epitope in the Eastern equine encephalitis virus (EEEV) E2 glycoprotein by screening a phage-displayed random 12-mer peptide library using an EEEV E2 specific monoclonal antibody (mAb) 7C11 and defined L/F-E/R-Y-T-W-G/R-N-H/W-P as the consensus binding motif. A sequence ((321)EGLEYTWGNHPP(332)) encompassing this consensus motif was found in the EEEV E2 glycoprotein and synthesized for further epitope confirmation. Meanwhile, the corresponding epitope peptides in E2 protein of associated alphaviruses were synthesized for specificity identification. Results showed the mAb 7C11 and murine antisera all reacted strongly against the synthesized polypeptide of EEEV antigen complex, but no reaction with Western equine encephalitis virus (WEEV) and Venezuelan equine encephalitis virus (VEEV) was detected. The knowledge and reagents generated in this study may have potential applications in differential diagnosis and the development of epitope-based marker vaccines against EEEV.
authors: The Key Laboratory of Veterinary Public Health, Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, PR China.
authors: J
authors: J
authors: Zhao
authors: E C
authors: EC
authors: Sun
authors: N H
authors: NH
authors: Liu
authors: T
authors: T
authors: Yang
authors: Q Y
authors: QY
authors: Xu
authors: Y L
authors: YL
authors: Qin
authors: Y H
authors: YH
authors: Yang
authors: D L
authors: DL
authors: Wu
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D061505:Cell Surface Display Techniques / Q000379:methods*; D016384:Consensus Sequence; D004663:Encephalitis Virus, Eastern Equine / Q000276:immunology*; D020242:Encephalomyelitis, Eastern Equine / Q000276:immunology; D018985:Epitopes, B-Lymphocyte / Q000276:immunology*; D006734:Horse Diseases / Q000276:immunology / Q000821:virology; D006736:Horses / Q000276:immunology / Q000821:virology; D014759:Viral Envelope Proteins / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D018985:Epitopes, B-Lymphocyte; D014759:Viral Envelope Proteins; C064956:glycoprotein E2, equine encephalitis virus