A Newcastle Disease Virus (NDV) Expressing a Membrane-Anchored Spike as a Cost-Effective Inactivated SARS-CoV-2 Vaccine.

A Newcastle Disease Virus (NDV) Expressing a Membrane-Anchored Spike as a Cost-Effective Inactivated SARS-CoV-2 Vaccine.
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DOI:
10.3390/vaccines8040771
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发表时间:
2020-12-17
期刊:
影响因子:
7.8
通讯作者:
Palese P
Palese P
中科院分区:
医学3区
文献类型:
--
作者:
Sun W;McCroskery S;Liu WC;Leist SR;Liu Y;Albrecht RA;Slamanig S;Oliva J;Amanat F;Schäfer A;Dinnon KH 3rd;Innis BL;García-Sastre A;Krammer F;Baric RS;Palese P

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一个成功的严重急性呼吸综合征冠状病毒2型(SARS-CoV-2)疫苗不仅必须是安全和保护性的,而且还必须以低成本满足全球范围的需求。利用目前的流感病毒疫苗生产能力来生产蛋基灭活纽卡斯尔病病毒(NDV)/SARS-CoV-2疫苗将应对这一挑战。在这里,我们报告了一种稳定表达膜锚定形式刺突(NDV-S)的灭活NDV嵌合体作为小鼠和仓鼠中有效的2019冠状病毒病(COVID-19)疫苗的临床前评价。灭活NDV-S疫苗具有免疫原性,在两种动物模型中诱导强结合和/或中和抗体。更重要的是,灭活NDV-S疫苗保护动物免受SARS-CoV-2感染。在佐剂的存在下,可以实现抗原保留,这将进一步降低成本,同时保持疫苗的保护效力。
A successful severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine must not only be safe and protective, but must also meet the demand on a global scale at a low cost. Using the current influenza virus vaccine production capacity to manufacture an egg-based inactivated Newcastle disease virus (NDV)/SARS-CoV-2 vaccine would meet that challenge. Here, we report pre-clinical evaluations of an inactivated NDV chimera stably expressing the membrane-anchored form of the spike (NDV-S) as a potent coronavirus disease 2019 (COVID-19) vaccine in mice and hamsters. The inactivated NDV-S vaccine was immunogenic, inducing strong binding and/or neutralizing antibodies in both animal models. More importantly, the inactivated NDV-S vaccine protected animals from SARS-CoV-2 infections. In the presence of an adjuvant, antigen-sparing could be achieved, which would further reduce the cost while maintaining the protective efficacy of the vaccine.
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