Development of a multi-antigenic SARS-CoV-2 vaccine candidate using a synthetic poxvirus platform.

Development of a multi-antigenic SARS-CoV-2 vaccine candidate using a synthetic poxvirus platform.
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DOI:
10.1038/s41467-020-19819-1
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发表时间:
2020-11-30
影响因子:
16.6
通讯作者:
Wussow F
Wussow F
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Chiuppesi F;Salazar MD;Contreras H;Nguyen VH;Martinez J;Park Y;Nguyen J;Kha M;Iniguez A;Zhou Q;Kaltcheva T;Levytskyy R;Ebelt ND;Kang TH;Wu X;Rogers TF;Manuel ER;Shostak Y;Diamond DJ;Wussow F

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改良的安卡拉牛痘(MVA)是一种高度减毒的痘病毒载体,广泛用于开发传染病和癌症的疫苗。我们展示了基于独特的三质粒系统的疫苗平台的构建,以有效地从化学合成的DNA产生重组MVA载体。为了应对由SARS冠状病毒-2(SARS-CoV-2)引起的正在进行的全球大流行,我们使用该疫苗平台来快速产生共表达SARS-CoV-2刺突抗原和核衣壳抗原(涉及保护性免疫的两种免疫显性抗原)的全合成MVA(sMVA)载体。我们表明,这些sMVA载体免疫小鼠产生强大的SARS-CoV-2抗原特异性体液和细胞免疫应答,包括有效的中和抗体。这些结果证明了基于合成DNA的疫苗平台有效产生重组MVA载体并快速开发基于多抗原痘病毒的SARS-CoV-2候选疫苗的潜力。Chiuppesi等人展示了使用合成的基于痘病毒的平台来快速产生表达SARS-CoV-2的刺突和核衣壳抗原的多抗原疫苗候选物。小鼠免疫刺激有效的抗原特异性体液和细胞免疫应答,包括中和抗体。
Modified Vaccinia Ankara (MVA) is a highly attenuated poxvirus vector that is widely used to develop vaccines for infectious diseases and cancer. We demonstrate the construction of a vaccine platform based on a unique three-plasmid system to efficiently generate recombinant MVA vectors from chemically synthesized DNA. In response to the ongoing global pandemic caused by SARS coronavirus-2 (SARS-CoV-2), we use this vaccine platform to rapidly produce fully synthetic MVA (sMVA) vectors co-expressing SARS-CoV-2 spike and nucleocapsid antigens, two immunodominant antigens implicated in protective immunity. We show that mice immunized with these sMVA vectors develop robust SARS-CoV-2 antigen-specific humoral and cellular immune responses, including potent neutralizing antibodies. These results demonstrate the potential of a vaccine platform based on synthetic DNA to efficiently generate recombinant MVA vectors and to rapidly develop a multi-antigenic poxvirus-based SARS-CoV-2 vaccine candidate. Chiuppesi et al. demonstrate the use of a synthetic poxvirus-based platform to rapidly generate multi-antigenic vaccine candidates expressing spike and nucleocapsid antigens of SARS-CoV-2. Immunization of mice stimulates potent antigen-specific humoral and cellular immune responses, including neutralizing antibodies.
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