相关实验视频
Updated: Jan 12, 2026

09:58
Light-driven Enzymatic Decarboxylation
Published on: May 22, 2016
12.2K
微型光酶通过脱氧性氧化实现了器官特异性的细胞控制
Qiaoling Che1,2, Ru He1,2, Yixin Zhang1
1State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.
Angewandte Chemie (International ed. in English)
|November 5, 2025
概括
研究人员开发了miniSOG,这是一种用于活细胞内部精确,光激活化学反应的小型光酶. 这种生物对等工具能够以最少的干扰实现有针对性的细胞控制,为生物研究开辟了新的途径.
科学领域:
- 生物化学 生化学
- 分子生物学分子生物学
- 化学生物学 化学生物学
背景情况:
- 人工光酶为体外生物催化剂提供了潜力,但由于细胞干扰和氧气需求,在活细胞应用中面临挑战.
- 开发精确的工具,活细胞内的光激活化学对于理解和操纵生物过程至关重要.
研究的目的:
- 为了介绍miniSOG,一个微型的光酶,用于活细胞中的生物对等脱性氧化.
- 为了证明miniSOG在操纵细胞通路中的多功能性和时空控制.
- 建立一个基因编码的平台,用于有针对性的细胞调制,最小的目标外影响.
主要方法:
- 使用miniSOG,一个12kDa的光酶,用于蓝光激活的超氧化基离子 (O2•−) 的生成.
- 通过统一的O2•−介导机制,展示了miniSOG通过光激活多种有机酸盐的能力.
- 在活细胞中展示了时空精确的光催化,包括器官特异性向和受限反应.
主要成果:
- miniSOG 启用了 27 种不同的有机酸盐的生物相对应的除性氧化.
- 实现了精确的光门细胞调制,包括线粒体脱极化和核表观遗传修饰 (m6A甲基化).
- miniSOG的紧尺寸和局部O2•−扩散 (∼0.2μm) 确保了最小的细胞干扰.
结论:
- miniSOG是一种多功能,基因编码的光酶平台,用于精确,光控制的细胞通路操纵.
- 通过O2•−介导的除氧化氧化机制为激活各种基质提供了广泛的应用.
- 这项技术促进了有针对性的细胞干预,具有高的时空分辨率和最小的目标外影响.
更多相关视频
相关概念视频
Peroxisomes
19.9K
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...
19.9K
Peroxisomes and Mitochondria
94.1K
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...
94.1K
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
The Photochemical Reaction Center
5.2K
Reaction centers are pigment-protein complexes that initiate energy conversion from photons to chemical entities. Therefore, photochemical reaction center is a more appropriate term that describes these complexes. The Nobel laureates Robert Emerson and William Arnold provided the first experimental evidence of photochemical reaction centers by demonstrating the participation of nearly 2,500 chlorophyll molecules for the release of just one molecule of oxygen. Despite thousands of photosynthetic...
5.2K
Oxidation and Reduction of Organic Molecules
9.1K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
The removal of an electron from a molecule, results in a...
9.1K
Regulated Protein Degradation
8.7K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.7K

