相关实验视频
Updated: Sep 19, 2025

06:21
Assessment of the Metabolic Profile of Primary Leukemia Cells
Published on: November 21, 2018
10.6K
在瘤转化和细胞竞争中聚焦氧化代谢
Yogaspoorthi J Subramaniam1, Eugenia Piddini1
1School of Cellular and Molecular Medicine, University of Bristol, Bristol, United Kingdom.
Cancer research
|June 6, 2025
概括
细胞竞争消除了不适合的细胞,但致癌突变可以产生超级竞争者. 现场氧化还原成像显示了竞争期间的动态氧化还原变化,表明代谢药物可以调节这一过程.
科学领域:
- 细胞生物学 细胞生物学
- 癌症生物学 癌症生物学
- 代谢调节 代谢调节 代谢调节
背景情况:
- 细胞竞争是一种质量控制机制,更适合的细胞消除不太适合的细胞,保持组织健康.
- 致癌突变可以赋予"超级竞争者"表型,推动瘤生长和转移.
- 像氧化应激和线粒体功能障碍这样的细胞应激与输家细胞状态有关.
研究的目的:
- 为了研究细胞氧化还原状态如何影响细胞在早期瘤发生期间的体内细胞竞争.
- 探索正常和瘤突变细胞之间的竞争性相互作用期间细胞氧化还原的动态变化.
- 评估代谢调节剂对细胞竞争的影响.
主要方法:
- 实时光比度对NAD,P) H和FAD进行成像,以监测细胞氧化还原状态.
- 在小鼠表皮中的竞争性相互作用的实时单细胞水平分析.
- 评估药物对线粒体代谢和细胞竞争的影响.
主要成果:
- 细胞氧化还原状态在瘤突变细胞和正常细胞之间的竞争期间动态变化.
- 现场氧化还原成像为竞争细胞的代谢状态提供了洞察力.
- 针对线粒体新陈代谢和细胞氧化还原的药物显著调节细胞竞争.
结论:
- 现场氧化还原成像是实时研究细胞竞争的强大工具.
- 代谢状态和氧化还原动力学在早期瘤发生过程中在细胞竞争中起着至关重要的作用.
- 调节线粒体代谢和氧化还原状态,通过影响细胞竞争,为癌症提供了潜在的治疗策略.
相关概念视频
Adaptive Mechanisms in Cancer Cells
6.0K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
6.0K
Electron Transport Chain: Complex I and II
15.1K
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...
15.1K
Oxygen Requirements and Growth Patterns
291
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
291
PI3K/mTOR/AKT Signaling Pathway
4.0K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
4.0K
Peroxisomes
14.5K
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...
14.5K
Redox Reactions
221
Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
221

