相关实验视频
Updated: Jun 2, 2026

14:08
Study of Protein-protein Interactions in Autophagy Research
Published on: September 9, 2017
mTOR和自的空间合增加了分泌表型
Masako Narita1, Andrew R J Young, Satoko Arakawa
1Cancer Research UK Cambridge Research Institute (CRI), Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK.
概括
该研究确定了一个新的细胞区,即TOR-自空间合区 (TASCC),其中蛋白质合成和降解机械融合. 这种空间合增强了蛋白质分泌,特别是在细胞应激和分化过程中.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 猛素的哺乳动物标 (mTOR) 反向调节蛋白质合成和自降解.
- 快速的蛋白质循环需要协调的合成代谢和合成代谢过程.
- 细胞机械的空间组织对于高效的功能至关重要.
研究的目的:
- 为了识别和描述一种新的细胞隔间合mTOR信号与自.
- 为了研究这个区块在调节蛋白质合成和分泌中的作用.
- 了解这种空间合在细胞过程中的影响,如衰老和分化.
主要方法:
- 显微镜可视化细胞区和蛋白质定位.
- 生物化学试验评估mTOR招募及其对氨基酸和Rag GTPases的依赖.
- 功能性测试用于测量干白素-6/8的合成和蛋白质分泌.
- 对不同细胞类型和条件 (例如,Ras诱导的衰老,巨细胞分化,细胞) 中TASCC形成的分析.
主要成果:
- 一个不同的隔间,TOR-自空间合隔间 (TASCC),被确定为跨戈尔吉.
- 在Ras诱导的衰老过程中,mTOR和 (自动) 解体积聚在TASCC中.
- 对TASCC的mTOR招募依赖于氨基酸和Rag GTPases.
- 对TASCC的mTOR定位的破坏会损害IL-6/8的合成.
- 观察到TASCC的形成在分化的巨细胞和质细胞中,与增加的蛋白质分泌相关.
结论:
- 塔斯克 (TASCC) 代表了一种新的空间协调,用于触媒和合成细胞机械.
- 这种空间合促进了高效的蛋白质合成和分泌,特别是在高需求或压力的条件下.
- 这些发现为调节蛋白质循环和细胞功能提供了新的见解.
相关概念视频
mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
PI3K/mTOR/AKT Signaling Pathway
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 rapamycin-insensitive companion...
Autophagy
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
Autophagic Cell Death
Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
Delivery Pathways to the Lysosome
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
