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Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Nano+Today 2021 ; 38 (ä): 101139 Nephropedia Template TP
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Engineering a self-navigated MnARK nanovaccine for inducing potent protective immunity against novel coronavirus #MMPMID33758593
Wang Y; Xie Y; Luo J; Guo M; Hu X; Chen X; Chen Z; Lu X; Mao L; Zhang K; Wei L; Ma Y; Wang R; Zhou J; He C; Zhang Y; Zhang Y; Chen S; Shen L; Chen Y; Qiu N; Liu Y; Cui Y; Liao G; Liu Y; Chen C
Nano Today 2021[Jun]; 38 (ä): 101139 PMID33758593show ga
Effective vaccines are vital to fight against the COVID-19 global pandemic. As a critical component of a subunit vaccine, the adjuvant is responsible for strengthening the antigen-induced immune responses. Here, we present a new nanovaccine that comprising the Receptor-Binding Domain (RBD) of spike protein and the manganese nanoadjuvant (MnARK), which induces humoral and cellular responses. Notably, even at a 5-fold lower antigen dose and with fewer injections, the MnARK vaccine immunized mice showed stronger neutralizing abilities against the infection of the pseudovirus (~270-fold) and live coronavirus (>8-fold) in vitro than that of Alum-adsorbed RBD vaccine (Alu-RBD). Furthermore, we found that the effective co-delivery of RBD antigen and MnARK to lymph nodes (LNs) elicited an increased cellular internalization and the activation of immune cells, including DCs, CD4(+) and CD8(+) T lymphocytes. Our findings highlight the importance of MnARK adjuvant in the design of novel coronavirus vaccines and provide a rationale strategy to design protective vaccines through promoting cellular internalization and the activation of immune-related pathways.