{"title":"小鼠(Mus musculus)和鲫鱼(Carassius carassius)线粒体活性氧产生的差异。","authors":"Lucie Gerber, May-Kristin Torp, Göran E. Nilsson, Sjannie Lefevre, Kåre-Olav Stensløkken","doi":"10.1111/apha.14244","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Aim</h3>\n \n <p>In most vertebrates, oxygen deprivation and subsequent re-oxygenation are associated with mitochondrial impairment and excess production of reactive oxygen species (ROS) like hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). This in turn triggers a cascade of cell-damaging events in a temperature-dependent manner. The crucian carp (<i>Carassius carassius</i>) is one of few vertebrates that survives months without oxygen at cold temperatures and overcomes oxidative damage during re-oxygenation periods. Mitochondria of this anoxia-tolerant species therefore serve as an excellent model in translational research to study adaptation and resilience to low oxygen conditions and thermal variability.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>Here, we used high-resolution respirometry on isolated mitochondria from hearts of crucian carp and the anoxia-intolerant mouse (<i>Mus musculus</i>), at 37 and 8°C; two temperatures relevant for transplantation medicine (i.e., graft preservation and subsequent rewarming).</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>We find: (1) a striking difference in H<sub>2</sub>O<sub>2</sub> release between the two species at 37°C despite comparable mitochondrial efficiency and capacity, (2) a massive H<sub>2</sub>O<sub>2</sub> release after inhibition of complex V in mouse at 37°C that is absent in crucian carp, and prevented in mouse by incubation at 8°C or uncoupling with a protonophore at 37°C, and (3) indications that differences in mitochondrial complex I and II capacity and thermal sensitivity influence the release of mitochondrial H<sub>2</sub>O<sub>2</sub> relative to respiration.</p>\n </section>\n \n <section>\n \n <h3> Conclusion</h3>\n \n <p>Our findings provide comparative insights into a spectrum of mitochondrial adaptations in vertebrates and the importance of thermal variability. Furthermore, the species- and temperature-related changes associated with mitochondria highlighted in this study may help identify mitochondria-based targets for translational medicine.</p>\n </section>\n </div>","PeriodicalId":107,"journal":{"name":"Acta Physiologica","volume":"240 12","pages":""},"PeriodicalIF":5.6000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/apha.14244","citationCount":"0","resultStr":"{\"title\":\"Differential production of mitochondrial reactive oxygen species between mouse (Mus musculus) and crucian carp (Carassius carassius)\",\"authors\":\"Lucie Gerber, May-Kristin Torp, Göran E. Nilsson, Sjannie Lefevre, Kåre-Olav Stensløkken\",\"doi\":\"10.1111/apha.14244\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Aim</h3>\\n \\n <p>In most vertebrates, oxygen deprivation and subsequent re-oxygenation are associated with mitochondrial impairment and excess production of reactive oxygen species (ROS) like hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). This in turn triggers a cascade of cell-damaging events in a temperature-dependent manner. The crucian carp (<i>Carassius carassius</i>) is one of few vertebrates that survives months without oxygen at cold temperatures and overcomes oxidative damage during re-oxygenation periods. Mitochondria of this anoxia-tolerant species therefore serve as an excellent model in translational research to study adaptation and resilience to low oxygen conditions and thermal variability.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>Here, we used high-resolution respirometry on isolated mitochondria from hearts of crucian carp and the anoxia-intolerant mouse (<i>Mus musculus</i>), at 37 and 8°C; two temperatures relevant for transplantation medicine (i.e., graft preservation and subsequent rewarming).</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>We find: (1) a striking difference in H<sub>2</sub>O<sub>2</sub> release between the two species at 37°C despite comparable mitochondrial efficiency and capacity, (2) a massive H<sub>2</sub>O<sub>2</sub> release after inhibition of complex V in mouse at 37°C that is absent in crucian carp, and prevented in mouse by incubation at 8°C or uncoupling with a protonophore at 37°C, and (3) indications that differences in mitochondrial complex I and II capacity and thermal sensitivity influence the release of mitochondrial H<sub>2</sub>O<sub>2</sub> relative to respiration.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Conclusion</h3>\\n \\n <p>Our findings provide comparative insights into a spectrum of mitochondrial adaptations in vertebrates and the importance of thermal variability. Furthermore, the species- and temperature-related changes associated with mitochondria highlighted in this study may help identify mitochondria-based targets for translational medicine.</p>\\n </section>\\n </div>\",\"PeriodicalId\":107,\"journal\":{\"name\":\"Acta Physiologica\",\"volume\":\"240 12\",\"pages\":\"\"},\"PeriodicalIF\":5.6000,\"publicationDate\":\"2024-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1111/apha.14244\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Physiologica\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/apha.14244\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"PHYSIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Physiologica","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/apha.14244","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSIOLOGY","Score":null,"Total":0}
引用次数: 0
摘要
目的:在大多数脊椎动物中,缺氧和随后的复氧与线粒体损伤和过氧化氢(H2O2)等活性氧(ROS)的过量产生有关。这反过来又以依赖温度的方式引发一连串的细胞损伤事件。鲫鱼(Carassius carassius)是少数几种能在低温缺氧的情况下存活数月,并在复氧期间克服氧化损伤的脊椎动物之一。因此,这种耐缺氧物种的线粒体在转化研究中是研究对低氧条件和热变异的适应性和恢复力的极佳模型。方法:在这里,我们使用高分辨率呼吸测定法测定了鲫鱼和耐缺氧小鼠(Mus musculus)心脏的分离线粒体,测定温度分别为 37 和 8°C;这两个温度与移植医学(即移植物保存和随后的复温)相关:结果:我们发现结果:我们发现:(1) 尽管线粒体的效率和容量相当,但在 37 摄氏度时,两种鱼类的 H2O2 释放量存在显著差异;(2) 在 37 摄氏度时,小鼠的复合体 V 受到抑制后会释放大量 H2O2,而鲫鱼则没有这种现象,在 8 摄氏度下孵育或在 37 摄氏度时用质子诱导剂解偶联可防止小鼠释放大量 H2O2;(3) 有迹象表明,线粒体复合体 I 和 II 容量以及热敏感性的差异会影响线粒体 H2O2 相对于呼吸作用的释放量:我们的研究结果提供了脊椎动物线粒体适应性谱系和热变异重要性的比较见解。此外,本研究强调的与线粒体相关的物种和温度变化可能有助于确定基于线粒体的转化医学目标。
Differential production of mitochondrial reactive oxygen species between mouse (Mus musculus) and crucian carp (Carassius carassius)
Aim
In most vertebrates, oxygen deprivation and subsequent re-oxygenation are associated with mitochondrial impairment and excess production of reactive oxygen species (ROS) like hydrogen peroxide (H2O2). This in turn triggers a cascade of cell-damaging events in a temperature-dependent manner. The crucian carp (Carassius carassius) is one of few vertebrates that survives months without oxygen at cold temperatures and overcomes oxidative damage during re-oxygenation periods. Mitochondria of this anoxia-tolerant species therefore serve as an excellent model in translational research to study adaptation and resilience to low oxygen conditions and thermal variability.
Methods
Here, we used high-resolution respirometry on isolated mitochondria from hearts of crucian carp and the anoxia-intolerant mouse (Mus musculus), at 37 and 8°C; two temperatures relevant for transplantation medicine (i.e., graft preservation and subsequent rewarming).
Results
We find: (1) a striking difference in H2O2 release between the two species at 37°C despite comparable mitochondrial efficiency and capacity, (2) a massive H2O2 release after inhibition of complex V in mouse at 37°C that is absent in crucian carp, and prevented in mouse by incubation at 8°C or uncoupling with a protonophore at 37°C, and (3) indications that differences in mitochondrial complex I and II capacity and thermal sensitivity influence the release of mitochondrial H2O2 relative to respiration.
Conclusion
Our findings provide comparative insights into a spectrum of mitochondrial adaptations in vertebrates and the importance of thermal variability. Furthermore, the species- and temperature-related changes associated with mitochondria highlighted in this study may help identify mitochondria-based targets for translational medicine.
期刊介绍:
Acta Physiologica is an important forum for the publication of high quality original research in physiology and related areas by authors from all over the world. Acta Physiologica is a leading journal in human/translational physiology while promoting all aspects of the science of physiology. The journal publishes full length original articles on important new observations as well as reviews and commentaries.