相关实验视频
Updated: Jul 25, 2025
07:20
Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
Published on: January 31, 2025
567
线粒体代谢驱动低密度脂蛋白诱导的乳腺癌细胞迁移
Sandrina Nóbrega-Pereira1,2, Francisco Santos2, Miguel Oliveira Santos1
1Instituto de Medicina Molecular João Lobo Antunes, Faculty of Medicine, University of Lisbon, Lisbon, Portugal.
Cancer research communications
|June 28, 2023
概括
低密度脂蛋白 (LDL) 通过增强线粒体脂肪酸使用,促进三阴性乳腺癌 (TNBC) 转移. 阻断CD36或活性氧物种 (ROS) 阻断LDL驱动的TNBC细胞迁移和代谢适应.
科学领域:
- 在瘤学瘤学.
- 代谢途径 代谢途径
- 癌细胞生物学 癌细胞生物学
背景情况:
- 转移是癌症死亡的主要原因.
- 富含脂质的环境,包括高低密度脂蛋白 (LDL) 胆固醇,促进乳腺癌转移.
- 线粒体代谢在脂肪丰富环境中的三阴性乳腺癌 (TNBC) 转移中的作用尚不清楚.
研究的目的:
- 研究LDL如何影响TNBC细胞迁移和入侵.
- 阐明线粒体代谢在LDL诱导的TNBC转移中的作用.
- 确定预防TNBC转移的潜在治疗点.
主要方法:
- 细胞培养和TNBC的*in vivo*模型.
- 评估细胞迁移,入侵和脂质滴滴的形成.
- 线粒体质量,网络分析和代谢概况 (转录组和能量分析).
- 抑制CD36和活性氧物种 (ROS) 途径.
主要成果:
- LDL增加了脂质滴积累,CD36表达和TNBC细胞迁移和入侵.
- LDL增强了线粒体质量和迁移细胞中的网络扩散,这取决于动蛋白重塑.
- 在LDL的影响下,TNBC细胞变得依赖脂肪酸 (FA) 氧化来进行线粒体呼吸.
- 由LDL诱导的迁移和线粒体重塑需要将FA输送到线粒体中.
- 在LDL治疗后观察到长链脂肪酸的线粒体积累和ROS产量的增加.
- 阻断CD36或ROS废除的LDL诱导的细胞迁移和代谢重编程.
结论:
- LDL通过重编程线粒体新陈代谢以利用脂肪酸来促进TNBC细胞迁移和入侵.
- CD36和ROS是LDL诱导的线粒体适应和细胞迁移的关键媒介.
- 向CD36或ROS在脂质丰富的环境中为TNBC提供了潜在的抗转移性策略.
相关概念视频
02:53Adaptive Mechanisms in Cancer Cells
5.8K
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,...
5.8K
01:24Overview of Lipid Metabolism
1.8K
Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
1.8K
01:35Cancer Cell Migration through Invadopodia
2.3K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
2.3K
01:46Electron Transport Chain: Complex I and II
14.6K
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...
14.6K