{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T12:21:26Z","timestamp":1790166086364,"version":"4.1.0"},"reference-count":55,"publisher":"Microbiology Society","issue":"10","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2003,10,1]]},"abstract":"<jats:p>In this study, a serotype-specific monoclonal antibody (mAb), D<jats:sub>2<\/jats:sub>16-1 (Ab4), against dengue virus type 2 (DEN-2) was generated. The specificity of Ab4, which recognized DEN-2 non-structural protein 1, was determined by ELISA, immunofluorescence and immunoblotting analyses. The serotype-specific B-cell epitope of Ab4 was identified further from a random phage-displayed peptide library; selected phage clones reacted specifically with Ab4 and did not react with other mAbs. Immunopositive phage clones displayed a consensus motif, His\u2013Arg\/Lys\u2013Leu\/Ile, and a synthetic peptide corresponding to the phage-displayed peptide bound specifically to Ab4. The His and Arg residues in this epitope were found to be crucial for peptide binding to Ab4 and binding activity decreased dramatically when these residues were changed to Leu. The epitope-based synthetic peptide not only identified serum samples from DEN-2-immunized mice and rabbits by ELISA but also differentiated clearly between serum samples from DEN-2- and Japanese encephalitis virus-immunized mice. This mAb and its epitope-based peptide antigen will be useful for serologic diagnosis of DEN-2 infection. Furthermore, DEN-2 epitope identification makes it feasible to dissect antibody responses to DEN and to address the role of antibodies in the pathogenesis of primary and secondary DEN-2 infections.<\/jats:p>","DOI":"10.1099\/vir.0.19228-0","type":"journal-article","created":{"date-parts":[[2003,9,18]],"date-time":"2003-09-18T03:18:12Z","timestamp":1063855092000},"page":"2771-2779","source":"Crossref","is-referenced-by-count":36,"title":["Identification of a dengue virus type 2 (DEN-2) serotype-specific B-cell epitope and detection of DEN-2-immunized animal serum samples using an epitope-based peptide antigen"],"prefix":"10.1099","volume":"84","author":[{"given":"Han-Chung","family":"Wu","sequence":"first","affiliation":[{"name":"Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan 100, Republic of 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