期刊
VIRUS RESEARCH
卷 150, 期 1-2, 页码 49-55出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.virusres.2010.02.012
关键词
Dengue virus; Non-structural protein; Polyclonal antibody; Phage display library; Epitopes
类别
资金
- Guangdong Natural Science Fund of China [7001516, 06201946]
- National Natural Science Foundation of China [U0632002]
- National Science and Technology Program of China [2008ZX10004-015, 2008ZX10004-007]
NS1 of dengue virus (DENV) is an important non-structural protein, which plays an important role in DENV replication and dengue infection. In this study, using the phage-displayed peptide library screening method and purified anti-DENV2-NS1 polyclonal antibody immunoglobulin G (IgG) as target, which was generated from the purified recombinant expressed DENV2-NS1 protein immunization on rabbit, seven B-cell epitopes of DENV2-NS1 protein were screened. Considering the results of comprehensive bioinformatic analysis on NS1 B-cell epitopes, possible dominant B-cell epitopes are located in amino acids residues 36-45, 80-89, 103-112, 121-130, 187-196, 295-304, and 315-324 of the NS1, and two epitope-based NS1 protein dodecapeptides corresponding to the predominant epitopes (PA10: (36)PESPSKIASA(45) and AA10: (187)AIRDNRAVHA(196)) were chosen for synthesis. Results of binding assay and competitive-inhibition assays indicated the two peptides were the specific epitopes of DENV2-NS1 protein. These epitopes could be useful in understanding the pathogenesis of DENV and as dengue vaccine constituents in further study. (C) 2010 Elsevier B.V. All rights reserved.
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