Abstract
Foot‐and‐mouth disease (FMD) is an acute and febrile infectious disease, which can cause great economic losses. Virus‐like particles (VLPs) as an advantageous antigen can induce significant specific immune response. To improve immunity of VLPs, especially, make it induce persistent immune response, the hollow mesoporous silica nanoparticles (HMSNs) as a potential nano‐adjuvant were synthesized and loaded the FMD virus (FMDV) VLPs. They were injected into guinea pigs and the specific immune response was detected. The results confirmed that HMSNs/VLPs can induce persistent humoral immunity with high‐level antibody titer for more than three months. HMSNs also improve the T‐lymphocyte proliferation and IFN‐γ induced by FMDV VLPs, and provides the ideal protection against FMDV challenge. These consequences indicated that HMSNs were good protein delivery vehicle and potential nano‐adjuvant of vaccines.
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