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• W2045688769 endingPage "e1002390" @default.
• W2045688769 startingPage "e1002390" @default.
• W2045688769 abstract "Chikungunya virus (CHIKV) is an alphavirus responsible for numerous epidemics throughout Africa and Asia, causing infectious arthritis and reportedly linked with fatal infections in newborns and elderly. Previous studies in animal models indicate that humoral immunity can protect against CHIKV infection, but despite the potential efficacy of B-cell-driven intervention strategies, there are no virus-specific vaccines or therapies currently available. In addition, CHIKV has been reported to elicit long-lasting virus-specific IgM in humans, and to establish long-term persistence in non-human primates, suggesting that the virus might evade immune defenses to establish chronic infections in man. However, the mechanisms of immune evasion potentially employed by CHIKV remain uncharacterized. We previously described two human monoclonal antibodies that potently neutralize CHIKV infection. In the current report, we have characterized CHIKV mutants that escape antibody-dependent neutralization to identify the CHIKV E2 domain B and fusion loop groove as the primary determinants of CHIKV interaction with these antibodies. Furthermore, for the first time, we have also demonstrated direct CHIKV cell-to-cell transmission, as a mechanism that involves the E2 domain A and that is associated with viral resistance to antibody-dependent neutralization. Identification of CHIKV sub-domains that are associated with human protective immunity, will pave the way for the development of CHIKV-specific sub-domain vaccination strategies. Moreover, the clear demonstration of CHIKV cell-to-cell transmission and its possible role in the establishment of CHIKV persistence, will also inform the development of future anti-viral interventions. These data shed new light on CHIKV-host interactions that will help to combat human CHIKV infection and inform future studies of CHIKV pathogenesis." @default.
• W2045688769 created "2016-06-24" @default.
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• W2045688769 date "2011-12-01" @default.
• W2045688769 modified "2023-10-14" @default.
• W2045688769 title "Chikungunya Virus Neutralization Antigens and Direct Cell-to-Cell Transmission Are Revealed by Human Antibody-Escape Mutants" @default.
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• W2045688769 doi "https://doi.org/10.1371/journal.ppat.1002390" @default.
• W2045688769 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3228792" @default.
• W2045688769 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22144891" @default.
• W2045688769 hasPublicationYear "2011" @default.
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