Two genes related to apoptosis in the hepatopancreas of juvenile prawn, Macrobrachium nipponense: Molecular characterization and transcriptional response to nanoplastic exposure
文献类型： 外文期刊
作者： Li, Yiming 1 ; Du, Xinglin 2 ; Li, Wen 2 ; Jiang, Qichen 3 ; Ye, Yucong 2 ; Yang, Ying 2 ; Liu, Xingguo 1 ; Zhao, Yunlong 2 ; Che, Xuan 1 ;
作者机构： 1.Chinese Acad Fisheries Sci, Fishery Machinery & Instrument Res Inst, Shanghai 200092, Peoples R China
2.East China Normal Univ, Sch Life Sci, Shanghai 200241, Peoples R China
3.Freshwater Fisheries Res Inst Jiangsu Prov, Nanjing 210017, Peoples R China
4.East China Normal Univ, Sch Life Sci, 500 Dongchuan Rd, Shanghai, Peoples R China
5.Chinese Acad Fisheries Sci, Fishery Machinery & Instrument Res Inst, 63 Chifeng Rd, Shanghai 200092, Peoples R China
关键词： Macrobrachium nipponense; Nanoplastic; Apoptosis; Hepatotoxicity; Gene expression
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）
ISSN： 0048-9697
年卷期： 2023 年 877 卷
页码：
收录情况： SCI
摘要： Nanoplastics have been widely found in the global water environment, causing plastic pollution and affecting human beings and numerous organisms. Studies involving freshwater crustacean exposure to nanoplastics, however, are limited. In this study, juvenile prawns (Macrobrachium nipponense) were exposed to 75 nm polystyrene nanoplastics at different concentra-tions (0, 5, 10, 20, or 40 mg/L) for a 28-d chronic exposure experiment. To study the effects of exposure to nanoplastics on hepatopancreas cell apoptosis, C-Jun N-terminal kinase (JNK) and phosphatidylinositol-4,5-bisphosphate 3-kinase, cata-lytic subunit alpha (PIK3CA) genes were selected, and hepatotoxic enzyme activities and Toll pathway-and apoptosis-related gene expression were determined. For the first time, full-length Mn-JNK and Mn-PIK3CA cDNAs were cloned from M. nipponense. Homologous comparisons showed that JNK and PIK3CA had conserved functional sequences. The ap-optosis rate in the high-concentration nanoplastic group (40 mg/L) was significantly higher than in the low-concentration nanoplastic (5 mg/L) and control groups (0 mg/L). The alanine aminotransferase (ALT), aspartate aminotransferase (AST), glutamyl transpeptidase (GGT) and xanthine oxidase (XOD) enzyme activities in the hepatopancreas increased with expo-sure to higher concentrations of nanoplastics. In addition, the levels of apoptosis-and Toll pathway-related gene expression and JNK and PIK3CA gene expression were initially increased, then decreased with exposure to higher concentrations of nanoplastics. This study showed that polystyrene nanoplastics activate toll-related pathways leading to apoptosis and hepa-topancreas damage, which provides theoretical support for future aquatic toxicological research.
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