文献类型： 外文期刊

作者： Zhang, Xing ¹ ; Shao, Wenjing ¹ ; Huo, Yiming ¹ ; Kong, Yifei ¹ ; Zhang, Wenxue ² ; Li, Song ² ; Zhou, Wenlin ³ ; Wu, Xuehui ³ ; Qin, Fenju ¹ ; Hu, Xiaolong ² ;

作者机构： 1.Suzhou Univ Sci & Technol, Sch Chem & Life Sci, Suzhou 215009, Peoples R China

2.Soochow Univ, Sch Biol & Basic Med Sci, Suzhou 215123, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Sericulture & Tea, Hangzhou 310021, Peoples R China

关键词： Silkworm; nSiO2; Dietary exposure; Microbial diversity; Metabolites

期刊名称：CHEMOSPHERE （ 影响因子：8.8； 五年影响因子：8.3 ）

ISSN： 0045-6535

年卷期： 2023 年 323 卷

页码：

收录情况： SCI

摘要： Silicon dioxide nanoparticles (nSiO2) are one of the widely utilized nanoparticle (NPSs) materials, and exposure to nSiO2 is ubiquitous. With the increasing commercialization of nSiO2, the potential risk of nSiO2 release to the health and the ecological environment have been attracted more attention. In this study, the domesticated lepidopteran insect model silkworm (Bombyx mori) was utilized to evaluate the biological effects of dietary exposure to nSiO2. Histological investigations showed that nSiO2 exposure resulted in midgut tissue injury in a dose-dependent manner. Larval body mass and cocoon production were reduced by nSiO2 exposure. ROS burst was not triggered, and the activities of antioxidant enzymes were induced in the midgut of silkworm exposure to nSiO2. RNA-sequencing revealed that the differentially expressed genes induced by nSiO2 exposure were pre-dominantly enriched into xenobiotics biodegradation and metabolism, lipid, and amino acid metabolism path-ways. 16 S rDNA sequencing revealed that nSiO2 exposure altered the microbial diversity in the gut of the silkworm. Metabolomics analysis showed that the combined uni-and multivariate analysis identified 28 sig-nificant differential metabolites from the OPLS-DA model. These significant differential metabolites were pre-dominantly enriched into the metabolic pathways, including purine metabolism and tyrosine metabolism and so. Spearman correlation analysis and the Sankey diagram established the relationship between microbe and me-tabolites, and some genera may play crucial and pleiotropic functions in the interaction between microbiome and host. These findings indicated that nSiO2 exposure could impact the dysregulation of genes related to xenobiotics metabolism, gut dysbiosis, and metabolic pathways and provided a valuable reference for assessing nSiO2 toxicity from a multi-dimensional perspective.