IAPV-Induced Paralytic Symptoms Associated with Tachypnea via Impaired Tracheal System Function

文献类型： 外文期刊

第一作者： Deng, Yanchun

作者： Deng, Yanchun;Yang, Sa;Diao, Qingyun;Hou, Chunsheng;Deng, Yanchun;Yang, Sa;Diao, Qingyun;Hou, Chunsheng;Deng, Yanchun;Zhao, Hongxia;Hou, Chunsheng

作者机构：

关键词： paralytic symptoms; respiratory failure; tissue tropism; IAPV; honey bee

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.924； 五年影响因子：6.132 ）

ISSN：

年卷期： 2021 年 22 卷 18 期

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收录情况： SCI

摘要： Although it had been reported that Israeli acute paralysis virus (IAPV) can cause systemic infection in honey bees, little is known about how it establishes this infection and results in the typical symptoms, paralysis and trembling. Here, we used our previously constructed IAPV infectious clone to investigate viral loads in different tissues of honey bees and further identify the relation between tissue tropism and paralytic symptoms. Our results showed that tracheae showed a greater concentration of viral abundance than other tissues. The abundance of viral protein in the tracheae was positively associated with viral titers, and was further confirmed by immunological and ultrastructural evidence. Furthermore, higher viral loads in tracheae induced remarkable down-regulation of succinate dehydrogenase and cytochrome c oxidase genes, and progressed to causing respiratory failure of honey bees, resulting in the appearance of typical symptoms, paralysis and body trembling. Our results showed that paralysis symptoms or trembling was actually to mitigate tachypnea induced by IAPV infection due to the impairment of honey bee tracheae, and revealed a direct causal link between paralysis symptoms and tissue tropism. These findings provide new insights into the understanding of the underlying mechanism of paralysis symptoms of honey bees after viral infection and have implications for viral disease prevention and specific therapeutics in practice.

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