相关实验视频

Updated: Sep 13, 2025

Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess

Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess

Published on: June 1, 2022

西格玛1受体调节血和线粒体 Peroxiporins 的细胞质膜

Giorgia Pellavio¹, Giorgia Senise¹, Chiara Pia Vicenzo¹

¹Department of Molecular Medicine, Human Physiology Unit, University of Pavia, 27100 Pavia, Italy.

|July 25, 2025

概括

西格玛1受体 (S1R) 调节水素氧化物 (H2O2) 通过细胞膜通过水素 (AQP) 促进的去除. 这项研究揭示了S1RR.

科学领域:

细胞生物学细胞生物学
生物化学生物化学
氧化压力研究研究氧化压力研究

背景情况:

西格玛1受体 (S1R) 和水素素 (AQPs) 参与了氧化应激的管理.
AQP促进过氧化 (H2O2) 运输,这对细胞氧化还原平衡至关重要.
在H2O2调节中S1R和AQPs之间的相互作用仍然在很大程度上未被探索.

研究的目的:

研究S1R和AQPs在H2O2在细胞膜中扩散中的功能性作用.
探索S1R和AQP之间的潜在相互作用和监管关系.
阐明S1R和AQPs对细胞氧化应激控制的联合贡献.

主要方法:

使用HyPer7生物传感器实时检测H2O2.
采用了淘汰技术来评估S1R和AQP耗尽的功能影响.
通过等离子体膜和线粒体膜 (外部和内部) 检查了H2O2扩散.

主要成果:

确定了特定的AQP (AQP3,AQP6,AQP8) 参与H2O2在血和线粒体的运输.
证明了S1R在这些隔间的整体H2O2扩散中的参与.
提供证据表明S1R可以调节AQP6和AQP8活动.

结论:

在血和线粒体膜间的H2O2运输中,AQP起着协调作用.
S1R显著调节AQP介导的H2O2去除,影响细胞氧化状态.
这些发现突出了通过S1R-AQP相互作用控制氧化应激的新机制.

关键词:

哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈这是一个HyPer7生物传感器.在水中,有水.过氧化是一种过氧化.线粒体的透性线粒体的透性氧化应激是一种氧化应激.

更多相关视频

Author Spotlight: Advancing Mitochondrial Research - mtHyper7 Biosensor for Subcellular Analysis

Author Spotlight: Advancing Mitochondrial Research - mtHyper7 Biosensor for Subcellular Analysis

Published on: June 2, 2023

Measuring Mitochondrial Substrate Flux in Recombinant Perfringolysin O-Permeabilized Cells

Measuring Mitochondrial Substrate Flux in Recombinant Perfringolysin O-Permeabilized Cells

Published on: August 13, 2021

相关概念视频

Peroxisomes

Peroxisomes

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...

Protein Import into the Peroxisomes

Protein Import into the Peroxisomes

Cells contain membrane-bound organelles called peroxisomes that oxidize organic molecules by transferring hydrogen atoms to oxygen, producing hydrogen peroxide. Peroxisomes enzymatically convert the released hydrogen peroxide into water and oxygen.
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...

Structure of Porins

Structure of Porins

Mitochondria, chloroplasts, and gram-negative bacteria have transmembrane, beta-barrel proteins called porins to mediate the free diffusion of ions and metabolites across the membrane. Mitochondrial porin precursors contain conserved amino acid sequences called beta signals at their C-terminal. Beta signals have a motif of PoXGXXHyXHy (Po-Polar, X-Any amino acid, G-Glycine, Hy-LargeHydrophobic), which are crucial for precursor recognition to initiate precursor assembly. Beta-barrel...

Peroxisomes and Mitochondria

Peroxisomes and Mitochondria

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...

Porin Insertion in the Outer Mitochondrial Membrane

Porin Insertion in the Outer Mitochondrial Membrane

Porins are beta-barrel proteins translocated to the mitochondrial outer membrane through the TOM complex into the intermembrane space. Porin precursors bind TIM chaperones within the intermembrane space and are guided to the Sorting and Assembly Machinery complex or SAM complex on the outer mitochondrial membrane.
Three models describe the assembly of porins by the SAM complex and their insertion into the outer membrane. Model 1 suggests that porins are assembled outside the SAM channel as the...

Mitochondrial Membranes

Mitochondrial Membranes

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,...