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  • Title: Marburg virus-like particles by co-expression of glycoprotein and matrix protein in insect cells induces immune responses in mice.
    Author: Gai W, Zheng X, Wang C, Wang H, Zhao Y, Wang Q, Wong G, Zhang W, Feng N, Qiu B, Chi H, Li N, Wang T, Gao Y, Shan J, Yang S, Xia X.
    Journal: Virol J; 2017 Oct 25; 14(1):204. PubMed ID: 29070075.
    Abstract:
    BACKGROUND: Marburg virus (MARV) causes severe haemorrhagic fever in humans and nonhuman primates and has a high mortality rate. However, effective drugs or licensed vaccines are not currently available to control the outbreak and spread of this disease. METHODS: In this study, we generated MARV virus-like particles (VLPs) by co-expressing the glycoprotein (GP) and matrix protein (VP40) using the baculovirus expression system. MARV VLPs and three adjuvants, Poria cocos polysaccharide (PCP-II), poly(I:C) and aluminium hydroxide, were evaluated after intramuscular vaccination in mice. RESULTS: Murine studies demonstrated that vaccination with the MARV VLPs induce neutralizing antibodies and cellar immune responses. MARV VLPs and the PCP-II adjuvant group resulted in high titres of MARV-specific antibodies, activated relatively higher numbers of B cells and T cells in peripheral blood mononuclear cells (PBMCs), and induced greater cytokine secretion from splenocytes than the other adjuvants. CONCLUSION: MARV VLPs with the PCP-II adjuvant may constitute an effective vaccination and PCP-II should be further investigated as a novel adjuvant.
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