ITGB1b-Deficient Rare Minnows Delay Grass Carp Reovirus (GCRV) Entry and Attenuate GCRV-Triggered Apoptosis.

ITGB1b-Deficient Rare Minnows Delay Grass Carp Reovirus (GCRV) Entry and Attenuate GCRV-Triggered Apoptosis.
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ITGB1b 缺陷的稀有米诺鱼延迟草鱼呼肠孤病毒 (GCRV) 进入并减弱 GCRV 触发的细胞凋亡

DOI:
10.3390/ijms19103175
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发表时间:
2018-10-15
影响因子:
5.6
通讯作者:
Wang Y
Wang Y
中科院分区:
生物学2区
文献类型:
--
作者:
Chen G;Xiong L;Wang Y;He L;Huang R;Liao L;Zhu Z;Wang Y

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整合素β-1是一种属于整合素家族的跨膜蛋白,在病毒侵入过程中发挥重要作用。本研究克隆并分析了珍稀金枪鱼的itgb1b基因。为了探讨ITGB1b在草鱼呼肠孤病毒感染中的可能作用,我们利用CRISPR/CAS9系统构建了一株ITGB1b缺失的稀有小鱼(ITGB1b−/−)。经GCRV刺激后,与野生型相比,-ITGB1b−/−稀有小鱼的存活时间延长。此外,ITGB1b−/−稀有小鱼的GCRV相对拷贝数和网状蛋白介导的内吞相关和凋亡相关基因的表达水平显著低于野生型小鱼。这些结果表明,itgb1b的缺失降低了病毒的进入效率和凋亡相关基因的表达。此外,数据表明itgb1b在介导病毒通过网状蛋白进入细胞中起着重要作用。因此,这些发现为了解itgb1b在GCRV感染过程中的作用提供了新的视角。
Integrin β-1 (ITGB1) is a transmembrane protein belonging to the integrin family and it plays an important role in viral entry. In this study, the itgb1b gene of the rare minnow, Gobiocypris rarus, was cloned and analyzed. To investigate the possible role of itgb1b on grass carp reovirus (GCRV) infection, we generated an ITGB1b-deficient rare minnow (ITGB1b−/−) using the CRISPR/Cas9 system. Following stimulation with GCRV, the survival time of the -ITGB1b−/− rare minnows was extended in comparison to the wild-type minnows. Moreover, the relative copy number of GCRV and the level of clathrin-mediated endocytosis-associated and apoptosis-related gene expression in the ITGB1b−/− rare minnows was significantly lower than that of the wild-type minnows. These results suggested that the absence of itgb1b reduced viral entry efficiency and the expression of apoptosis-related genes. Moreover, the data suggested that itgb1b played an important role in mediating the entry of viruses into the cells via clathrin. Therefore, these findings provide novel insight into the function of itgb1b in the process of GCRV infection.
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