线粒体的血管新生活性;超出了唯一的生物能器官
Fatemeh Sadeghsoltani1,2, Parisa Hassanpour3, Mir-Meghdad Safari4
1Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Journal of cellular physiology
|January 14, 2024
概括
线粒体在血管生成中发挥关键作用,这是新血管形成的过程. 这项研究探讨了细胞之间的线粒体转移,可能涉及自,如何调节这一重要过程,特别是在低氧条件下.
科学领域:
- * 细胞生物学 * 细胞生物学
- *生理学 *生理学
- * 生物化学 * 生物化学
背景情况:
- *血管生成,即新血管的形成,对于氧气和营养物质的输送至关重要,并且受到缺氧等因素的影响.
- *线粒体是细胞能量生产和平衡的核心,感知氧气水平和调节细胞功能.
- *细胞间线粒体转移通过道化纳米管,细胞外囊泡和间隙结发生,维持细胞平衡.
研究的目的:
- * 调查线粒体在调节血管生成中的作用.
- * 在血管生成的背景下探索细胞间线粒体运输的机制.
- * 检查线粒体转移,自和血管生成之间的潜在关系.
主要方法:
- *文献综述和对线粒体,血管生成和细胞间通信现有研究的分析.
- * 探索参与线粒体动力学和转移的细胞机制.
- * 研究血管生成过程中自和线粒体功能之间的相互作用.
主要成果:
- *线粒体是血管生成的关键能量提供者和调节者,特别是在低氧条件下.
- *细胞间线粒体转移是维持细胞平衡的公认机制,可能促进血管生成.
- *精确的分子机制将线粒体捐赠与血管反应联系起来需要进一步阐明.
结论:
- *线粒体转移是调节血管生成的重要因素,特别是在缺血-再输血损伤期间.
- *线粒体运输,自和血管生成之间的相互作用是未来研究的关键领域.
- *了解这些机制可能为涉及异常血管生成的疾病提供新的治疗策略.
相关概念视频
Translocation of Proteins into the Mitochondria
3.1K
Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
3.1K
Mitochondria
12.7K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
12.7K
Mitochondrial Membranes
10.4K
A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
10.4K
Energy to Drive Translocation
2.1K
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
Generally, polypeptides are unfolded by two distinct...
2.1K
Electron Transport Chain: Complex I and II
13.4K
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...
13.4K
The Inner Mitochondrial Membrane
3.4K
The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria. In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
3.4K


