Mice immunized with trimethyl chitosan nanoparticles containing DENV-2 envelope domain III elicit neutralizing antibodies with undetectable antibody-dependent enhancement activity
Issued Date
2022-01-01
Resource Type
ISSN
00221317
eISSN
14652099
Scopus ID
2-s2.0-85134430810
Pubmed ID
35833704
Journal Title
Journal of General Virology
Volume
103
Issue
7
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of General Virology Vol.103 No.7 (2022)
Suggested Citation
Seesen M., Jearanaiwitayakul T., Limthongkul J., Sunintaboon P., Ubol S. Mice immunized with trimethyl chitosan nanoparticles containing DENV-2 envelope domain III elicit neutralizing antibodies with undetectable antibody-dependent enhancement activity. Journal of General Virology Vol.103 No.7 (2022). doi:10.1099/jgv.0.001768 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/87535
Title
Mice immunized with trimethyl chitosan nanoparticles containing DENV-2 envelope domain III elicit neutralizing antibodies with undetectable antibody-dependent enhancement activity
Author's Affiliation
Other Contributor(s)
Abstract
Dengue is a disease that poses a significant global public health concern. Although a tetravalent live-attenuated dengue vaccine has been licensed, its efficacy is still debated due to evidence of vaccine breakthrough infection. To avoid this issue, dengue vaccines should stimulate a high degree of serotype-specific response. Thus, envelope domain III (EDIII), which contains serotype-specific neutralizing epitopes, is an attractive target for dengue vaccine development. In this study, we investigated how EDIII encapsidated in N, N, N-trimethyl chitosan chloride nanoparticles (TMC NPs) stimulates a serotype-specific response and whether this response exerts a potential in vitro breakthrough infection. The immune response to DENV-2 elicited by EDIII TMC NP-immunized mice was monitored. We demonstrated that immunization with EDIII TMC NPs resulted in a high level of anti-EDIII antibody production. These antibodies included IgG, IgG1, and IgG2a subtypes. Importantly, antibodies from the immunized mice exerted efficient neutralizing activity with undetectable antibody dependent enhancement (ADE) activity. We also found that EDIII TMC NPs activated functional EDIII-specific CD4+ and CD8+ T cell responses. In conclusion, EDIII TMC NPs stimulated humoral immunity with a strong neutralizing antibody response, as well as a cellular immune response against DENV-2.