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Oral exposure to a hexafluoropropylene oxide trimer acid (HFPO-TA) disrupts mitochondrial function and biogenesis in mice
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2022-01-29 , DOI: 10.1016/j.jhazmat.2022.128376
Xiaoxian Xie 1 , Jiafeng Zhou 1 , Luting Hu 1 , Ruonan Shu 1 , Mengya Zhang 1 , Lei Sun 1 , Fengchun Wu 2 , Zhengwei Fu 1 , Zezhi Li 2
Affiliation  

Hexafluoropropylene oxide trimer acid (HFPO-TA) is reported to have hepatotoxicity, lipotoxicity, and cytotoxicity. In this study, the toxicological effects of HFPO-TA on mitochondrial function and biogenesis were studied. Mice were exposed to drinking water which contained either 2, 20, or 200 μg/L HFPO-TA. Results showed exposure to HFPO-TA induced disadvantageous physiological changes in mice, including increases in liver weight, altered cell morphology, and inflammatory responses. Specifically, exposure to 200 μg/L HFPO-TA increased mitochondria number, relative mitochondrial DNA (mtDNA) content, and mRNA levels of mitochondrial genes encoded by mtDNA. Significant increases in TFAM mRNA and protein levels were also observed. Liver metabolome analysis also showed exposure to 200 μg/L HFPO-TA further enhanced increases in metabolites and altered metabolic pathways that correlated with mitochondrial function, especially the production of ATP. HFPO-TA exposure increased protein expression of mitochondrial complex I-V, and the activities of key enzymes involved in TCA cycle (α-ketoglutarate dehydrogenase, citrate synthase, and succinate dehydrogenase). Furthermore, exposure to 200 μg/L HFPO-TA significantly up-regulating mRNA and protein levels of Opa1, Mfn1, Mfn2, Fis1, and Mff, but did not change Drp1. These findings suggest HFPO-TA could have detrimental effects on health of animals, particularly it was associated with disrupted mitochondrial energy metabolism.



中文翻译:

口服暴露于六氟环氧丙烷三聚酸 (HFPO-TA) 会破坏小鼠的线粒体功能和生物发生

据报道,六氟环氧丙烷三聚酸 (HFPO-TA) 具有肝毒性、脂毒性和细胞毒性。在这项研究中,研究了 HFPO-TA 对线粒体功能和生物发生的毒理学影响。将小鼠暴露于含有 2、20 或 200 μg/L HFPO-TA 的饮用水中。结果表明,暴露于 HFPO-TA 会导致小鼠出现不利的生理变化,包括肝脏重量增加、细胞形态改变和炎症反应。具体来说,暴露于 200 μg/L HFPO-TA 会增加线粒体数量、相对线粒体 DNA (mtDNA) 含量和由 mtDNA 编码的线粒体基因的 mRNA 水平。还观察到 TFAM mRNA 和蛋白质水平的显着增加。肝脏代谢组分析还显示,暴露于 200 μg/L HFPO-TA 会进一步增强代谢物的增加,并改变与线粒体功能相关的代谢途径,尤其是 ATP 的产生。HFPO-TA 暴露增加了线粒体复合物 IV 的蛋白质表达,以及参与 TCA 循环的关键酶(α-酮戊二酸脱氢酶、柠檬酸合酶和琥珀酸脱氢酶)的活性。此外,暴露于 200 μg/L HFPO-TA 显着上调 Opa1、Mfn1、Mfn2、Fis1 和 Mff 的 mRNA 和蛋白质水平,但没有改变 Drp1。这些发现表明 HFPO-TA 可能对动物的健康产生不利影响,特别是它与线粒体能量代谢的破坏有关。HFPO-TA 暴露增加了线粒体复合物 IV 的蛋白质表达,以及参与 TCA 循环的关键酶(α-酮戊二酸脱氢酶、柠檬酸合酶和琥珀酸脱氢酶)的活性。此外,暴露于 200 μg/L HFPO-TA 显着上调 Opa1、Mfn1、Mfn2、Fis1 和 Mff 的 mRNA 和蛋白质水平,但没有改变 Drp1。这些发现表明 HFPO-TA 可能对动物的健康产生不利影响,特别是它与线粒体能量代谢的破坏有关。HFPO-TA 暴露增加了线粒体复合物 IV 的蛋白质表达,以及参与 TCA 循环的关键酶(α-酮戊二酸脱氢酶、柠檬酸合酶和琥珀酸脱氢酶)的活性。此外,暴露于 200 μg/L HFPO-TA 显着上调 Opa1、Mfn1、Mfn2、Fis1 和 Mff 的 mRNA 和蛋白质水平,但没有改变 Drp1。这些发现表明 HFPO-TA 可能对动物的健康产生不利影响,特别是它与线粒体能量代谢的破坏有关。但没有改变 Drp1。这些发现表明 HFPO-TA 可能对动物的健康产生不利影响,特别是它与线粒体能量代谢的破坏有关。但没有改变 Drp1。这些发现表明 HFPO-TA 可能对动物的健康产生不利影响,特别是它与线粒体能量代谢的破坏有关。

更新日期:2022-01-29
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