Premium
Artificially designed hepatitis B virus core particles composed of multiple epitopes of type A and O foot‐and‐mouth disease virus as a bivalent vaccine candidate
Author(s) -
Lei Yao,
Shao Junjun,
Zhao Furong,
Li Yangfan,
Lei Chenglin,
Ma Feifei,
Chang Huiyun,
Zhang Yongguang
Publication year - 2019
Publication title -
journal of medical virology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 121
eISSN - 1096-9071
pISSN - 0146-6615
DOI - 10.1002/jmv.25554
Subject(s) - virology , epitope , virus like particle , biology , virus , foot and mouth disease virus , antibody , bivalent (engine) , immune system , chemistry , immunology , recombinant dna , genetics , organic chemistry , metal , gene
Recently, many countries, including China, have experienced a series of type A and O foot‐and‐mouth disease virus (FMDV) epidemics, causing serious economic losses. Although concerns about the safety of inactivated FMD vaccines have been raised, the development of a safe and effective subunit vaccine is necessary. We constructed two chimeric virus‐like particles (VLPs; rHBc/AO and rHBc/AOT VLPs) displaying tandem repeats of B cell epitopes (VP1 residue 134‐161 and 200‐213) derived from type A and O FMDV and one T cell epitope (3 A residue 21‐35) using the truncated hepatitis B virus core (HBc) carrier. Our results indicate that the chimeric HBc can self‐assemble into VLPs with these FMDV epitopes displayed on the surface. Immunization with the chimeric VLPs induced specific IgG and neutralization antibodies against type A and O FMDV in mice. Compared with the commercial type A/O FMDV bivalent inactivated vaccine, rHBc/AO and rHBc/AOT VLPs significantly stimulated the production of Th1 type cytokines (IFN‐γ and IL‐2), whereas Th2 cytokine production (IL‐4 and IL‐10) was decreased. Compared with rHBc/AO, rHBc/AOT induced increased Th2 cytokine and specific IgG production. These results demonstrate that the VLPs constructed in the current study induced both humoral and cellular immune responses and may represent potential bivalent VLP vaccines targeting both FMDV type A and O strains.