相关实验视频
Updated: Jun 12, 2025

11:31
Evaluation of the Storage Stability of Extracellular Vesicles
Published on: May 22, 2019
14.1K
压力诱导的细胞外囊泡:洞察它们改变的蛋白质组合及其在癌症中可能发挥的生理作用
Vaidehi Bhavsar1, Ashish Sahu1, Ravindra Taware2
1Department of Biotechnology, National Institute of Pharmaceutical Education and Research-Ahmedabad, Palaj, Gandhinagar, Gujarat, 382355, India.
Molecular and cellular biochemistry
|September 20, 2024
概括
细胞外囊泡 (EVs) 作为细胞间通讯器,携带各种分子载荷. 压力下EV含量的变化,如低氧或pH值,揭示了癌症发展和传播的洞察力.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 细胞外囊泡 (EVs),也称为信号体,由细胞释放,并介导细胞间通信.
- 电动汽车含有核酸,蛋白质,脂质和代谢物,其组成受生理条件和压力的影响.
- 研究改变的EV含量对于理解压力诱导的细胞反应至关重要.
研究的目的:
- 审查在应对各种压力因素时差异性EV流失和蛋白质组变化的意义.
- 突出EVs在瘤微环境中产生癌症的发展和传播中的作用.
- 为了强调改变电动汽车载荷对受体细胞行为的影响.
主要方法:
- 关于细胞外囊泡生物学的文献综述.
- 对研究不同压力条件下的EV成分 (低氧,营养缺乏,pH值变化,氧化应激,Ca2+度) 的分析.
- 检查改变EV载荷对接收细胞的功能后果.
主要成果:
- 由于生理上的压力,例如缺氧,改变的葡萄糖/谷氨胺水平,pH值变化,氧化应激和离子度等,EV的脱落和蛋白质含量发生了显著的改变.
- 这些EV货物的修改在瘤微环境中的细胞间通信中起着至关重要的作用.
- 改变的EVs会影响受体细胞的行为,导致癌症的进展和转移.
结论:
- 在压力下差异性EV脱落和货物修改是细胞间通信的关键机制.
- 研究压力诱导的EV变化为癌症生物学提供了宝贵的见解.
- 了解这些变化对于开发新的癌症诊断和治疗方法至关重要.
相关概念视频
Overview of Exosomes
2.7K
Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
2.7K
Role of ER in the Secretory Pathway
5.3K
Eukaryotic cells have a special pathway that enables communication between various intracellular membrane-bound compartments and also with the extracellular environment. This pathway is termed as the secretory pathway.
Components of the secretory pathway
About a third of proteins synthesized in the cell are sorted via the secretory route. They shuffle between different compartments in membrane-bound vesicles until they reach their final destination. The main intracellular compartments involved...
Components of the secretory pathway
About a third of proteins synthesized in the cell are sorted via the secretory route. They shuffle between different compartments in membrane-bound vesicles until they reach their final destination. The main intracellular compartments involved...
5.3K
The Tumor Microenvironment
6.6K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
6.6K
Overview of Secretory Vesicles
8.5K
Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
8.5K
Intralumenal Vesicles and Multivesicular Bodies
3.4K
Intraluminal vesicles (ILVs) are small vesicles 50-80 nm in diameter formed during the maturation of early endosomes. A specialized endosome containing numerous ILVs is called a multivesicular body (MVB). ILVs contain internalized molecules such as antigens, nucleic acids, proteins, and metabolites. Some of these molecules are released from the MVBs inside exosomes and are transported to other cells. Other MVBs contain molecules that are retained in the ILVs and are later degraded within the...
3.4K
The Extracellular Matrix
8.9K
Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
8.9K

