A Zika virus vaccine expressing premembrane-envelope-NS1 polyprotein.

A Zika virus vaccine expressing premembrane-envelope-NS1 polyprotein.
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DOI:
10.1038/s41467-018-05276-4
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发表时间:
2018-08-03
影响因子:
16.6
通讯作者:
Li J
Li J
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Li A;Yu J;Lu M;Ma Y;Attia Z;Shan C;Xue M;Liang X;Craig K;Makadiya N;He JJ;Jennings R;Shi PY;Peeples ME;Liu SL;Boyaka PN;Li J

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目前开发寨卡病毒(ZIKV)亚单位疫苗的努力主要集中在膜前蛋白(prM)和包膜蛋白(E)上,但对NS1在寨卡病毒特异性免疫反应和保护中的作用知之甚少。在这里,我们开发了一种以ZIKV prM-E-NS1为多蛋白的减毒重组水疱性口炎病毒(rVSV)疫苗。这种候选载体疫苗在小鼠中是减毒的,在小鼠中,单次免疫可诱导寨卡病毒特异性抗体和T细胞免疫反应,提供对寨卡病毒攻击的保护。prM、E和NS1的共表达诱导Th2和Th17细胞因子的反应水平明显高于prM-E。此外,NS1本身即使不能诱导中和抗体,也能对小鼠的寨卡病毒感染提供部分保护。这些结果表明,共表达prM、E和NS1的减毒rVSV是一种很有希望的抗寨卡病毒感染的候选疫苗,并突出了NS1在寨卡病毒特异性细胞免疫应答中的重要作用。目前寨卡病毒(ZIKV)亚单位疫苗的开发主要集中在prM和E蛋白上,NS1在免疫应答和保护中的作用尚不清楚。在这里,Li等人开发了一种基于vsv的减毒疫苗,表达ZIKV prM-E-NS1多蛋白,并在小鼠中表征了免疫反应和保护作用。
Current efforts to develop Zika virus (ZIKV) subunit vaccines have been focused on pre-membrane (prM) and envelope (E) proteins, but the role of NS1 in ZIKV-specific immune response and protection is poorly understood. Here, we develop an attenuated recombinant vesicular stomatitis virus (rVSV)-based vaccine expressing ZIKV prM-E-NS1 as a polyprotein. This vectored vaccine candidate is attenuated in mice, where a single immunization induces ZIKV-specific antibody and T cell immune responses that provide protection against ZIKV challenge. Co-expression of prM, E, and NS1 induces significantly higher levels of Th2 and Th17 cytokine responses than prM-E. In addition, NS1 alone is capable of conferring partial protection against ZIKV infection in mice even though it does not induce neutralizing antibodies. These results demonstrate that attenuated rVSV co-expressing prM, E, and NS1 is a promising vaccine candidate for protection against ZIKV infection and highlights an important role for NS1 in ZIKV-specific cellular immune responses. Current Zika virus (ZIKV) subunit vaccine development largely focuses on prM and E proteins, and the role of NS1 for immune response and protection is unclear. Here, Li et al. develop an attenuated VSV-based vaccine expressing a ZIKV prM-E-NS1 polyprotein and characterize immune response and protection in mice.
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