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Biomimetic inorganic camouflage circumvents antibody-dependent enhancement of infection

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Abstract

Pre-existing antibodies can aggravate disease during subsequent infection or vaccination via the mechanism of antibody-dependent enhancement (ADE) of infection. Herein, using dengue virus (DENV) as a model, we present a versatile surface-camouflage strategy to obtain a virus core-calcium phosphate shell hybrid by self-templated biomineralization. The shelled DENV stealthily avoids recognition by pre-existing antibodies under extracellular conditions, resulting in the efficient abrogation of the ADE of infection both in vitro and in vivo. Moreover, the nanoshell can spontaneously degrade under intracellular conditions to restore the virus activity and immunogenicity due to its pH-sensitive behaviour. This work demonstrates that the biomimetic material shell can significantly improve the administration safety and potency of the DENV vaccine, which provides the promising prospect of chemically designed virus-material hybrids for immune evasion.

Graphical abstract: Biomimetic inorganic camouflage circumvents antibody-dependent enhancement of infection

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Publication details

The article was received on 04 Sep 2017, accepted on 03 Oct 2017 and first published on 20 Oct 2017


Article type: Edge Article
DOI: 10.1039/C7SC03868B
Citation: Chem. Sci., 2017, Advance Article
  • Open access: Creative Commons BY license
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    Biomimetic inorganic camouflage circumvents antibody-dependent enhancement of infection

    X. Wang, Y. Deng, D. Yang, Y. Xiao, H. Zhao, Q. Nian, X. Xu, X. Li, R. Tang and C. Qin, Chem. Sci., 2017, Advance Article , DOI: 10.1039/C7SC03868B

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