拓控制的Pt原子位点提高了用于NAD+再生和酒精排毒的电子利用效率
Yinjun Tang1, Pengcheng Qi2, Yifei Chen1
1State Key Laboratory of Green Pesticides, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China.
National science review
|November 5, 2025
概括
这项研究引入了一种基于Pt的新型催化剂 (PtTdCo/O),用于有效的酒精排毒. 它通过优化氧气减少来最大限度地减少有害的活性氧物种 (ROS),为治疗酒精中毒提供了一种有前途的方法.
科学领域:
- 生物催化剂是一种生物催化剂.
- 材料科学 材料科学 材料科学
- 毒理学 毒理学 毒理学
背景情况:
- 急性酒精中毒严重损害肝脏,神经系统和新陈代谢,引起炎症.
- 目前用于酒精中毒的治疗方法由于NADH积累和活性氧物种 (ROS) 生成而面临局限性.
研究的目的:
- 开发一种新型的生物催化剂,以有效地排毒酒精,尽量减少ROS的产生.
- 在氧化物 (Co3O4) 网格内设计 (Pt) 原子位点的拓结构,以增强催化活性.
主要方法:
- 在Co3O4格子 (PtTdCo/O) 中合成的拓控制的Pt原子位点.
- 评估了PtTdCo/O与PtOhCo/O和纯Co3O4.4相比的NOX类活性和氧气减少途径.
- 进行了机制研究,以阐明催化途径和效率.
主要成果:
- 与对照组相比,PtTdCo/O表现出明显更高的NOX类活性 (3.59倍和3.83倍的增加).
- 催化剂优先催化4e−氧减少,增强电子利用率并最大限度地降低ROS产量.
- 机理学研究证实了改善基质吸附,电子利用,以及降低酒精降解的反应能量.
结论:
- 在Co3O4中Pt原子位点的拓结构工程是设计高性能生物催化剂的可行策略.
- PtTdCo/O证明了有效的酒精排毒的潜力,并减少了不良影响.
- 这种方法为开发生物应用中的先进催化剂提供了新的见解.
相关概念视频
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
982
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
982
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
1.6K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.6K
Electron Transport Chain: Complex I and II
18.4K
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...
18.4K
Electron Transport Chain: Complex III and IV
9.0K
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...
9.0K
Role of Reduced Coenzymes NADH and FADH₂
16.2K
The energy released from the breakdown of the chemical bonds within nutrients can be stored either through the reduction of electron carriers or in the bonds of adenosine triphosphate (ATP). In living systems, a small class of compounds functions as mobile electron carriers, molecules that bind to and shuttle high-energy electrons between compounds in pathways. The principal electron carriers that will be considered originate from the B vitamin group and are derivatives of nucleotides; they are...
16.2K
Phase I Reactions: Oxidation of Aliphatic and Aromatic Carbon-Containing Systems
675
Phase I biotransformation reactions are integral to drug metabolism, predominantly involving oxidative, reductive, and hydrolytic transformations. Chief among these are oxidative reactions, which enhance the hydrophilicity of xenobiotics and introduce polar functional groups to facilitate their elimination from the body.
Oxidation reactions are fundamental in aromatic carbon-containing systems. An example is the hydroxylation of phenobarbital, a process that transforms it into...
Oxidation reactions are fundamental in aromatic carbon-containing systems. An example is the hydroxylation of phenobarbital, a process that transforms it into...
675


