Protective Immunity Induced by Immunization with Baculovirus, Virus-like Particle, and Vaccinia Virus Expressing the AMA1 of <i>Plasmodium berghei</i>

Heterologous prime–boost immunization regimens using various vaccine platforms demonstrated promising results against infectious diseases. Here, mice were sequentially immunized with the recombinant baculovirus (rBV), virus-like particle (VLP), and recombinant vaccinia virus (rVV) vaccines expressin...

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Main Authors: Min-Ju Kim, Ki-Back Chu, Hae-Ji Kang, Keon-Woong Yoon, Gi-Deok Eom, Jie Mao, Su-Hwa Lee, Jeeva Subbiah, Sang-Moo Kang, Eun-Kyung Moon, Fu-Shi Quan
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Biomedicines
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Online Access:https://www.mdpi.com/2227-9059/10/9/2289
Description
Summary:Heterologous prime–boost immunization regimens using various vaccine platforms demonstrated promising results against infectious diseases. Here, mice were sequentially immunized with the recombinant baculovirus (rBV), virus-like particle (VLP), and recombinant vaccinia virus (rVV) vaccines expressing the <i>Plasmodium berghei</i> apical membrane antigen 1 (AMA1) for protective efficacy evaluation. The rBV_V_rVV heterologous immunization regimen elicited high levels of parasite-specific IgG, IgG2a, and IgG2b antibody responses in sera. Upon <i>P. berghei</i> challenge infection, proliferations of germinal center B cells in the inguinal lymph nodes, as well as blood CD4<sup>+</sup> and CD8<sup>+</sup> T cells were induced. More importantly, rBV_V_rVV immunization significantly diminished the parasitemia and prevented drastic bodyweight loss in mice post-challenge infection with <i>P. berghei</i>. Our findings revealed that immunization with rBV, VLP, and rVV expressing the AMA1 conferred protection against <i>P. berghei</i> infection, providing evidence for the potential implementation of this strategy.
ISSN:2227-9059