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Size-dependent neutralizing activity of gold nanoparticle-based subunit vaccine against dengue virus.

Abstract：

:Dengue results in substantial human morbidity and significant socio-economic impacts, but a specific dengue therapeutic is not available. The currently available dengue vaccine has low efficacy and high rate of adverse effects, necessitating different strategies for the development of a safer and more efficient vaccine against dengue virus. We describe here a hybrid combination of different-sized gold nanoparticles (AuNPs) and domain III of envelope glycoprotein derived from serotype 2 of dengue virus (EDIII) as dengue subunit vaccine. The efficacy of the EDIII-functionalized AuNPs (AuNP-E) to induce neutralizing antibody in BALB/c mice is evaluated. Obtained results show that AuNP-E induced a high level of antibody which mediates serotype-specific neutralization of dengue virus. More importantly, the level of antibody is dependent on both the size of AuNPs and the concentration of AuNP-E, implicating the possibility to modulate it through adjusting these parameters. These results represent an important step towards the development of tetravalent AuNP-based subunit dengue vaccine. STATEMENT OF SIGNIFICANCE:This research presents a novel subunit vaccine against dengue virus using a hybrid comprising gold nanoparticles (AuNPs) and domain III of envelop protein (EDIII). We proved the neutralizing activity of anti-EDIII antibody induced in immunized mice on Dengue virus serotype 2 in an AuNP core size and concentration dependent manner. The hybrid concept behind this work could also be adopted for the development of a tetravalent vaccine against four serotypes of Dengue virus.

journal_name

Acta Biomater

journal_title

Acta biomaterialia

authors

Quach QH,Ang SK,Chu JJ,Kah JCY

doi

10.1016/j.actbio.2018.08.011

subject

Has Abstract

pub_date

2018-09-15 00:00:00

pages

224-235

eissn

1742-7061

issn

1878-7568

pii

S1742-7061(18)30469-0

journal_volume

78

pub_type

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