家蚕
生物
尿酸
RNA干扰
同色
家蚕
次黄嘌呤
细胞生物学
生物化学
病毒学
基因
微生物学
酶
核糖核酸
蛋白质亚单位
作者
Jun‐li Lv,Wen‐qing Lai,Yu‐quan Gong,Kai‐yi Zheng,Xiao‐ying Zhang,Xue‐Yang Wang,Li‐Shang Dai,Muwang Li
摘要
Abstract Molybdenum cofactor sulfurase (MoCoS) is a key gene involved in the uric acid metabolic pathway that activates xanthine dehydrogenase to synthesise uric acid. Uric acid is harmful to mammals but plays crucial roles in insects, one of which is the immune responses. However, the function of Bombyx mori MoCoS in response to BmNPV remains unclear. In this study, BmMoCoS was found to be relatively highly expressed in embryonic development, gonads and the Malpighian tubules. In addition, the expression levels of BmMoCoS were significantly upregulated in three silkworm strains with different levels of resistance after virus infection, suggesting a close link between them. Furthermore, RNAi and overexpression studies showed that BmMoCoS was involved in resistance to BmNPV infection, and its antivirus effects were found to be related to the regulation of uric acid metabolism, which was uncovered by inosine‐ and febuxostat‐coupled RNAi and overexpression. Finally, the BmMoCoS‐mediated uric acid pathway was preliminarily confirmed to be a potential target to protect silkworms from BmNPV infection. Overall, this study provides new evidence for elucidating the molecular mechanism of silkworms in response to BmNPV infection and new strategies for the prevention of viral infections in sericulture.
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