TPT disrupts early embryonic development and glucose metabolism of marine medaka in different salinites

IF 3.9 3区 环境科学与生态学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Comparative Biochemistry and Physiology C-toxicology & Pharmacology Pub Date : 2024-09-07 DOI:10.1016/j.cbpc.2024.110035
Tengzhou Li , Luoxin Li , Bin Liu , Shaoying Xing , Ling Liu , Ping Li , Zhi-Hua Li
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Abstract

Triphenyltin (TPT) is an organotin compound frequently detected in coastal estuaries, yet studies on TPT's effects in regions with significant salinity fluctuations, such as coastal estuaries, are currently limited. To investigate the toxic effects of TPT under different salinity conditions, this study focused on marine medaka (Oryzias melastigma) embryos. Through early morphological observations, RNA-seq analysis, biochemical marker assays, and qPCR detection, we explored the impact of TPT exposure on the early embryonic development of marine medaka under varying salinities. The study found that TPT exposure significantly increased embryo mortality at salinities of 0 ppt and 30 ppt. RNA-seq analysis revealed that TPT primarily affects glucose metabolism and glycogen synthesis processes in embryos. Under high salinity conditions, TPT may inhibit glucose metabolism by suppressing glycolysis and promoting gluconeogenesis. Furthermore, TPT exposure under different salinities led to the downregulation of genes associated with the insulin signaling pathway (ins, insra, irs2b, pik3ca, pdk1b, akt1, foxo1a), which may be linked to suppressed glucose metabolism and increased embryonic mortality. In summary, TPT exposure under different salinities affects the early development of marine medaka embryos and inhibits glucose metabolism. This study provides additional data to support research on organotin compounds in coastal estuaries.

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TPT干扰不同盐渍条件下海鳉的早期胚胎发育和葡萄糖代谢
三苯基锡(TPT)是一种经常在沿海河口检测到的有机锡化合物,但目前对 TPT 在沿海河口等盐度波动较大地区的影响的研究还很有限。为了研究 TPT 在不同盐度条件下的毒性效应,本研究以海鳉(Oryzias melastigma)胚胎为研究对象。通过早期形态观察、RNA-seq分析、生化标记检测和qPCR检测,我们探讨了不同盐度条件下TPT暴露对海鳉早期胚胎发育的影响。研究发现,在盐度为 0 ppt 和 30 ppt 时,暴露于 TPT 会显著增加胚胎死亡率。RNA-seq分析显示,TPT主要影响胚胎的葡萄糖代谢和糖原合成过程。在高盐度条件下,TPT 可能通过抑制糖酵解和促进糖原生成来抑制葡萄糖代谢。此外,在不同盐度条件下接触 TPT 会导致与胰岛素信号通路相关的基因(ins、insra、irs2b、pik3ca、pdk1b、akt1、foxo1a)下调,这可能与糖代谢受抑制和胚胎死亡率增加有关。总之,在不同盐度下暴露于 TPT 会影响青鳉胚胎的早期发育并抑制葡萄糖代谢。这项研究为沿海河口的有机锡化合物研究提供了更多数据支持。
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
CiteScore
7.50
自引率
5.10%
发文量
206
审稿时长
30 days
期刊介绍: Part C: Toxicology and Pharmacology. This journal is concerned with chemical and drug action at different levels of organization, biotransformation of xenobiotics, mechanisms of toxicity, including reactive oxygen species and carcinogenesis, endocrine disruptors, natural products chemistry, and signal transduction with a molecular approach to these fields.
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