Attenuation hotspots in neurotropic human astroviruses.

Attenuation hotspots in neurotropic human astroviruses.
复制标题

DOI:
10.1371/journal.pbio.3001815
复制
发表时间:
2023-07
期刊:
影响因子:
9.8
通讯作者:
--
中科院分区:
生物学1区
文献类型:
--
作者:

文献摘要

参考文献

相似文献

在过去的十年中,嗜神经性星状病毒的检测急剧增加。星状病毒的MLB基因组代表了与幼儿、免疫功能低下者和老年人的胃肠炎和严重神经系统并发症相关的一组遗传上不同的人畜共患星状病毒。使用不同的病毒进化方法,我们在敏感细胞系中鉴定了负责MLB星状病毒减毒的captain编码区3′端的p53区域。为了产生具有鉴定的缺失的重组病毒,开发了MLB反向遗传学(RG)和复制子系统。重组截短的MLB病毒导致不平衡的RNA合成和iPSC衍生的神经元培养物中的强烈衰减,证实了嗜神经性决定簇的位置。该方法可用于使用感染人类、家畜和家禽的减毒星状病毒开发疫苗候选物。星状病毒的MLB基因组与脆弱个体的胃肠炎和严重神经系统并发症相关。MLB星状病毒反向遗传学系统的发展揭示了在细胞培养中对病毒复制不利但在人类神经元中导致减毒的遗传元件。
During the last decade, the detection of neurotropic astroviruses has increased dramatically. The MLB genogroup of astroviruses represents a genetically distinct group of zoonotic astroviruses associated with gastroenteritis and severe neurological complications in young children, the immunocompromised, and the elderly. Using different virus evolution approaches, we identified dispensable regions in the 3′ end of the capsid-coding region responsible for attenuation of MLB astroviruses in susceptible cell lines. To create recombinant viruses with identified deletions, MLB reverse genetics (RG) and replicon systems were developed. Recombinant truncated MLB viruses resulted in imbalanced RNA synthesis and strong attenuation in iPSC-derived neuronal cultures confirming the location of neurotropism determinants. This approach can be used for the development of vaccine candidates using attenuated astroviruses that infect humans, livestock animals, and poultry. The MLB genogroup of astroviruses are associated with gastroenteritis and severe neurological complications in vulnerable individuals. The development of reverse genetics system for MLB astroviruses reveals genetic elements that are dispensable for viral replication in cell culture but lead to attenuation in human neurons.
DOI: 10.1016/j.str.2022.10.010
发表时间: 2022-12-01
期刊: STRUCTURE
影响因子: 5.7
作者:
Delgado-Cunningham, Kevin;Lopez, Tomas;Khatib, Firas;Arias, Carlos F.;DuBois, Rebecca M.
通讯作者: DuBois, Rebecca M.
DOI: 10.1128/jvi.00665-22
发表时间: 2022-06-28
影响因子: 5.4
作者:
Aguilera-Flores, Catalina;Lopez, Tomas;Arias, Carlos F.
通讯作者: Arias, Carlos F.
DOI: 10.3201/eid2309.170168
发表时间: 2017-09
影响因子: 11.8
作者:
Boujon CL;Koch MC;Wüthrich D;Werder S;Jakupovic D;Bruggmann R;Seuberlich T
通讯作者: Seuberlich T
DOI: 10.1128/jcm.01040-10
发表时间: 2010-12-01
影响因子: 9.4
作者:
Blomstrom, Anne-Lie;Widen, Frederik;Berg, Mikael
通讯作者: Berg, Mikael
DOI: 10.1128/jcm.01195-14
发表时间: 2014-09-01
影响因子: 9.4
作者:
Bouzalas, Ilias G.;Wuethrich, Daniel;Seuberlich, Torsten
通讯作者: Seuberlich, Torsten