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Dengue viruses co-circulate as four serologically distinct viruses (DENV1–4) that commonly infect individuals sequentially. Current DENV candidate vaccines incorporate the entire virion envelope E protein (E) ectodomain thereby stimulating both DENV serotype-specific and cross-reactive antibodies. Because the latter may enhance naturally acquired infection, such vaccine formulations must be tetravalent...
Severe dengue virus (DENV) infection is epidemiologically linked to pre-existing anti-DENV antibodies acquired by maternal transfer or primary infection. A possible explanation is that DENV immune complexes evade neutralization by engaging Fcγ receptors (FcγR) on monocytes, natural targets for DENV in humans. Using epitope-matched humanized monoclonal antibodies (mAbs) and stable FcγR-transfected...
Lambda phage vectors mediate gene transfer in cultured mammalian cells and in live mice, and in vivo phage-mediated gene expression is increased when mice are pre-immunized with bacteriophage lambda. We now show that, like eukaryotic viruses, bacteriophage vectors are subject to Fc receptor-mediated, antibody-dependent enhancement of infection in mammalian cells. Antibody-dependent enhancement of...
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