皮层的细胞特异性氧化代谢
bioRxiv : the preprint server for biology
|December 9, 2024
概括
细胞表现出不同的线粒体功能. 这项研究揭示了近端和远端管道的细胞特异性代谢差异,这对于理解脏疾病和开发向疗法至关重要.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 线粒体生物学 线粒体生物学
- 细胞的新陈代谢
背景情况:
- 脏代谢健康是预防脏疾病进展的关键.
- 脏的结构和功能异质性限制了对细胞特异代谢的理解.
- 内线粒体异质性的假设是驱动细胞特异性代谢.
研究的目的:
- 研究不同细胞类型的线粒体功能能力和代谢.
- 探索细胞特异性线粒体新陈代谢在早期近接管 (PT),晚期PT和远端卷状管 (DCT) 中.
- 评估禁食如何影响这些脏部分的线粒体代谢.
主要方法:
- 在小鼠模型中使用了一种新的线粒体标记技术 (MITO-Tag).
- 使用Cre-driver线路生成细胞类型特定的小鼠模型,针对早期PT,晚期PT和DCT.
- 在孤立的线粒体上进行了功能性测试 (呼吸,脂肪酸氧化) 和代谢学.
主要成果:
- 在早期PT,晚期PT和DCT之间揭示了线粒体呼吸和脂肪酸氧化 (FAO) 能力的差异.
- 在禁食期间,这些能力的动态变化得到证明.
- 在禁食期间的晚期PT中观察到增加的FAO,由代谢变化表明.
结论:
- 皮层在不同细胞群体中表现出显著的线粒体代谢和功能多样性.
- 了解细胞特异性线粒体代谢对于开发脏疾病的向疗法至关重要.
- 在食和禁食条件下,MITO-Tag模型有效地捕捉了不同类型的脏细胞中的微粒体代谢差异.
相关概念视频
Electron Transport Chain: Complex I and II
11.5K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
11.5K
Drug Metabolism: Phase I Reactions
3.1K
A phase I reaction is a biochemical process that introduces a functionally reactive polar group to a substance. This transformation predominantly occurs in the liver, facilitated by the cytochrome P450 system of hemoproteins situated in the lipophilic endoplasmic reticulum of cells. The metabolite generated through this process can have varying polarities. If it is sufficiently polar, it can be easily excreted in the urine due to its water compatibility. However, if the metabolite is nonpolar,...
3.1K
Electron Transport Chain: Complex III and IV
7.0K
During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
7.0K
Peroxisomes and Mitochondria
86.6K
Peroxisomes and mitochondria are two important oxygen-utilizing organelles in eukaryotic cells. Mitochondria carry out cellular respiration—the process that converts energy from food into ATP. Peroxisomes carry out a variety of functions, primarily breaking down different substances, such as fatty acids.
The peroxisome is a single membrane-bound cellular organelle that can perform several different functions, including lipid metabolism and chemical detoxification. The enzymes within...
The peroxisome is a single membrane-bound cellular organelle that can perform several different functions, including lipid metabolism and chemical detoxification. The enzymes within...
86.6K
Peroxisomes
10.7K
Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
10.7K
The Electron Transport Chain
16.1K
The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
16.1K


