Norovirus Narita 104 virus-like particles expressed in Nicotiana benthamiana induce serum and mucosal immune responses.

Norovirus Narita 104 virus-like particles expressed in Nicotiana benthamiana induce serum and mucosal immune responses.
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尼古蒂亚纳本尼亚(Nicotiana benthamiana)表达的诺如病毒narita 104型病毒样颗粒会诱导血清和粘膜免疫反应。

DOI:
10.1155/2014/807539
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发表时间:
2014
影响因子:
--
通讯作者:
Mason HS
Mason HS
中科院分区:
生物学3区
文献类型:
--
作者:
Mathew LG;Herbst-Kralovetz MM;Mason HS

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成田104病毒是属于诺如病毒(杯状病毒科)基因组II的人类病原体。诺如病毒在全球范围内引起流行性胃肠炎。为了探索开发植物疫苗的潜力,利用烟草花叶病毒表达系统在本氏烟草中瞬时表达了编码成田104病毒衣壳蛋白(NaVCP)的植物优化基因。NaVCP积累了约0.3毫克/克鲜重的叶在感染后4天。开始过敏反应样症状,随后组织坏死需要一个简短的感染时间,是一个重要的因素限制表达。植物来源的NaVCP的透射电子显微镜证实了完全组装的病毒样颗粒(VLP)的存在。在这项研究中,一个优化的方法来表达和部分纯化NaVCP。此外,部分纯化的NaVCP用于通过鼻内递送免疫小鼠,并产生显著的粘膜和血清抗体应答。因此,植物来源的成田104 VLP具有与其它基因型特异性植物来源的VLP沿着用作候选亚单位疫苗或用作多价亚单位疫苗的组分的潜力。
Narita 104 virus is a human pathogen belonging to the norovirus (family Caliciviridae) genogroup II. Noroviruses cause epidemic gastroenteritis worldwide. To explore the potential of developing a plant-based vaccine, a plant optimized gene encoding Narita 104 virus capsid protein (NaVCP) was expressed transiently in Nicotiana benthamiana using a tobacco mosaic virus expression system. NaVCP accumulated up to approximately 0.3 mg/g fresh weight of leaf at 4 days postinfection. Initiation of hypersensitive response-like symptoms followed by tissue necrosis necessitated a brief infection time and was a significant factor limiting expression. Transmission electron microscopy of plant-derived NaVCP confirmed the presence of fully assembled virus-like particles (VLPs). In this study, an optimized method to express and partially purify NaVCP is described. Further, partially purified NaVCP was used to immunize mice by intranasal delivery and generated significant mucosal and serum antibody responses. Thus, plant-derived Narita 104 VLPs have potential for use as a candidate subunit vaccine or as a component of a multivalent subunit vaccine, along with other genotype-specific plant-derived VLPs.
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