期刊
JOURNAL OF INFECTIOUS DISEASES
卷 196, 期 12, 页码 1741-1748出版社
OXFORD UNIV PRESS INC
DOI: 10.1086/523654
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资金
- NIAID NIH HHS [R41 AI 60217] Funding Source: Medline
The flavivirus envelope (E) protein mediates cellular attachment and fusion with host cell membranes and is recognized by virus-neutralizing antibodies. We raised antibodies against a broad range of epitopes by immunizing a horse with recombinant West Nile virus (WNV) E protein. To define epitopes recognized by protective antibodies, we selected, by affinity chromatography, immunoglobulins against immobilized linear peptides derived from parts of the E protein. Immunoglobulins binding 9 different peptides from domains I, II, and III of the E protein neutralized WNV in vitro. This indicates that multiple protective epitopes can be found in the E protein. Immunoglobulins recognizing 3 peptides derived from domains I and II of E protein protected mice against a lethal challenge with WNV. These immunoglobulins recognized the E proteins of related flaviviruses, demonstrating that antibodies targeting specific E protein epitopes could be developed for prevention and treatment of multiple flavivirus infections.
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