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Promotion of Cellular and Humoral Immunity against Foot-and-Mouth Disease Virus by Immunization with Virus-Like Particles Encapsulated in Monophosphoryl Lipid A and Liposomes

Title
Promotion of Cellular and Humoral Immunity against Foot-and-Mouth Disease Virus by Immunization with Virus-Like Particles Encapsulated in Monophosphoryl Lipid A and Liposomes
Authors
Kim, Woo SikZhi, YongGuo, HuichenByun, Eui-BaekLim, Jae HyangSeo, Ho Seong
Ewha Authors
임재향
SCOPUS Author ID
임재향scopus
Issue Date
2020
Journal Title
VACCINES
ISSN
2076-393XJCR Link
Citation
VACCINES vol. 8, no. 4
Keywords
foot-and-mouth diseasevirus-like particlesvaccineliposomeTLR4 agonistimmunogenicity
Publisher
MDPI
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Virus-like particles (VLPs) have emerged as promising vaccine candidates against foot-and-mouth disease (FMD). However, such vaccines provide a relatively low level of protection against FMD virus (FMDV) because of their poor immunogenicity. Therefore, it is necessary to design effective vaccine strategies that induce more potent immunogenicity. In order to investigate the means to improve FMD VLP vaccine (VLPFMDV) immunogenicity, we encapsulated VLPs (MPL/DDA-VLPFMDV) with cationic liposomes based on dimethyldioctadecylammonium bromide (DDA) and/or monophosphoryl lipid A (MPL, TLR4 agonist) as adjuvants. Unlike inactivated whole-cell vaccines, VLPFMDV were successfully encapsulated in this MPL/DDA system. We found that MPL/DDA-VLPFMDV could induce strong cell-mediated immune responses by inducing not only VLP-specific IFN-gamma(+)CD4(+) (Th1), IL-17A(+)CD4(+) (Th17), and IFN-gamma(+)CD8(+) (activated CD8 response) T cells, but also the development of VLP-specific multifunctional CD4(+) and CD8(+) memory T cells co-expressing IFN-gamma, TNF-alpha, and IL-2. In addition, the MPL/DDA-VLPFMDV vaccine markedly induced VLP-specific antibody titers; in particular, the vaccine induced greater Th1-predominant IgG responses than VLPFMDV only and DDA-VLPFMDV. These results are expected to provide important clues for the development of an effective VLPFMDV that can induce cellular and humoral immune responses, and address the limitations seen in current VLP vaccines for various diseases.
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DOI
10.3390/vaccines8040633
Appears in Collections:
의과대학 > 의학과 > Journal papers
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