Studying the role of Bombyx mori molybdenum cofactor sulfurase in Bombyx mori nucleopolyhedrovirus infection

IF 2.3 2区农林科学 Q3 BIOCHEMISTRY & MOLECULAR BIOLOGY

Insect Molecular Biology Pub Date : 2024-02-07 DOI:10.1111/imb.12895

Jun-li Lv, Wen-qing Lai, Yu-quan Gong, Kai-yi Zheng, Xiao-ying Zhang, Xue-yang Wang, Li-shang Dai, Mu-wang Li

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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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研究钼辅助因子硫化酶在蚕核多角体病毒感染中的作用。

钼辅助因子硫化酶（MoCoS）是尿酸代谢途径中的一个关键基因，它激活黄嘌呤脱氢酶合成尿酸。尿酸对哺乳动物有害，但对昆虫却起着至关重要的作用，其中之一就是免疫反应。然而，Bombyx mori MoCoS 在应对 BmNPV 时的功能仍不清楚。本研究发现，BmMoCoS 在胚胎发育、性腺和马氏管中相对高表达。此外，病毒感染后，BmMoCoS 的表达水平在三个具有不同抗性的蚕品系中显著上调，表明它们之间存在密切联系。此外，RNAi和过表达研究表明，BmMoCoS参与了对BmNPV感染的抵抗，其抗病毒作用与尿酸代谢调控有关，这是由肌苷和非布司他偶联的RNAi和过表达所揭示的。最后，初步证实 BmMoCoS 介导的尿酸途径是保护家蚕免受 BmNPV 感染的潜在靶点。总之，本研究为阐明家蚕应对 BmNPV 感染的分子机制和预防养蚕病毒感染的新策略提供了新的证据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Insect Molecular Biology 生物-昆虫学

CiteScore

4.80

自引率

3.80%

发文量

审稿时长

6-12 weeks

期刊介绍： Insect Molecular Biology has been dedicated to providing researchers with the opportunity to publish high quality original research on topics broadly related to insect molecular biology since 1992. IMB is particularly interested in publishing research in insect genomics/genes and proteomics/proteins. This includes research related to: • insect gene structure • control of gene expression • localisation and function/activity of proteins • interactions of proteins and ligands/substrates • effect of mutations on gene/protein function • evolution of insect genes/genomes, especially where principles relevant to insects in general are established • molecular population genetics where data are used to identify genes (or regions of genomes) involved in specific adaptations • gene mapping using molecular tools • molecular interactions of insects with microorganisms including Wolbachia, symbionts and viruses or other pathogens transmitted by insects Papers can include large data sets e.g.from micro-array or proteomic experiments or analyses of genome sequences done in silico (subject to the data being placed in the context of hypothesis testing).