A bivalent nanoparticle vaccine exhibits potent cross-protection against the variants of SARS-CoV-2.

A bivalent nanoparticle vaccine exhibits potent cross-protection against the variants of SARS-CoV-2.
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二价纳米颗粒疫苗对 SARS-CoV-2 变种表现出有效的交叉保护作用

DOI:
10.1016/j.celrep.2021.110256
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发表时间:
2022-01-18
期刊:
影响因子:
8.8
通讯作者:
Zhang H
Zhang H
中科院分区:
生物学1区
文献类型:
--
作者:
Yuan Y;Zhang X;Chen R;Li Y;Wu B;Li R;Zou F;Ma X;Wang X;Chen Q;Deng J;Zhang Y;Chen T;Lin Y;Yan S;Zhang X;Li C;Bu X;Peng Y;Ke C;Deng K;Pan T;He X;Zhang Y;Zhang H

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全球范围内正在进行针对严重急性呼吸综合征冠状病毒 2 (SARS-CoV-2) 的疫苗接种。然而,SARS-CoV-2 变种的出现可能会导致免疫逃避。我们开发了一种二价纳米颗粒疫苗,可显示 D614G 和 B.1.351 菌株的受体结合域 (RBD)。通过初免-加强或单剂量策略,该疫苗可在人血管紧张素转换酶 2 转基因小鼠中引发强大的中和抗体,并全面防止真正的 D614G 或 B.1.351 菌株感染。有趣的是,在接种 D614G 特异性疫苗 8 个月后,这种二价疫苗的新加强能够在恒河猴中引发针对 SARS-CoV-2 变体的交叉中和抗体。我们建议D614G/B.1.351二价疫苗可用作初始单剂量或连续强制剂量,以预防SARS-CoV-2及其变种的感染。袁等人。基于两种 SARS-CoV-2 变体 D614G 和 B.1.351 的 RBD 序列构建二价疫苗。单剂量疫苗或初免-加强方案疫苗可保护小鼠免受 SARS-CoV-2 攻击。二价疫苗通过第三剂方案在恒河猴中引发针对 SARS-CoV-2 变体的 nAb
Inoculation against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is ongoing worldwide. However, the emergence of SARS-CoV-2 variants could cause immune evasion. We developed a bivalent nanoparticle vaccine that displays the receptor binding domains (RBDs) of the D614G and B.1.351 strains. With a prime-boost or a single-dose strategy, this vaccine elicits a robust neutralizing antibody and full protection against infection with the authentic D614G or B.1.351 strain in human angiotensin-converting enzyme 2 transgene mice. Interestingly, 8 months after inoculation with the D614G-specific vaccine, a new boost with this bivalent vaccine potently elicits cross-neutralizing antibodies for SARS-CoV-2 variants in rhesus macaques. We suggest that the D614G/B.1.351 bivalent vaccine could be used as an initial single dose or a sequential enforcement dose to prevent infection with SARS-CoV-2 and its variants. Yuan et al. construct a bivalent vaccine based on the RBD sequence of two SARS-CoV-2 variants, D614G and B.1.351. Vaccination with a single dose or a prime-boost regimen is protective against SARS-CoV-2 challenge in mice. The bivalent vaccine elicits nAbs against SARS-CoV-2 variants in rhesus macaques with a third-dose regimen
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发表时间: 2021-04-29
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