细胞外囊泡在TSC脏细胞生成中的作用
Kamyar Zahedi1,2, Mackenzie Morgan1, Brenda Prieto1
1Division of Nephrology, Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
International journal of molecular sciences
|April 17, 2025
概括
结核性硬化综合体 (TSC) 细胞中的细胞外囊泡 (EVs) 具有 Tsc1 基因突变的细胞抑制了增殖. 这表明,EVs在TSC病原和囊发育中起作用.
科学领域:
- 细胞生物学 细胞生物学
- 遗传学 遗传学 是一个
- 生物化学 生化学
背景情况:
- 结核性硬化综合体 (TSC) 是一种由TSC1或TSC2基因突变引起的遗传疾病,影响多个器官.
- TSC蛋白通过拉巴胺素复合体1 (mTORC1) 途径的机械点调节细胞生长.
- 细胞外囊泡 (EVs) 调解细胞间通信,但它们在TSC病原发生中的作用尚不清楚.
研究的目的:
- 调查EVs在TSC病变发生中的作用.
- 确定 Tsc1 缺乏细胞的 EVs 是否影响正常细胞的功能和增殖.
主要方法:
- 从野类和Tsc1淘汰赛 (Tsc1KO) 鼠标中分离和表征EVs,使用西式斑点,电子显微镜和纳米粒子跟踪.
- RNA测序 (RNA-seq) 和蛋白质组分析以确定EV货物.
- 从Tsc1KO小鼠暴露于EVs后对M-1细胞增殖的测定.
主要成果:
- 从Tsc1KO小鼠中分离的EV与野生类型相比,具有类似的颗粒大小和EV标志物丰富度.
- 从Tsc1KO小鼠的EV的RNA和蛋白质含量中观察到显著的差异.
- 来自Tsc1KO小鼠的EVs证明了对M-1细胞增殖的抑制作用.
结论:
- 电动汽车在没有功能性 Tsc1.1 的情况下,可以携带不同的分子载荷.
- 来自Tsc1缺乏细胞的EVs可以调节正常细胞的增殖,这表明它在TSC中发挥了作用.
- 进一步了解EV参与TSC细胞生成可能会提供新的治疗策略.
相关概念视频
Vesicular Tubular Clusters
2.3K
After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi.
With the help of motor proteins such...
With the help of motor proteins such...
2.3K
Intralumenal Vesicles and Multivesicular Bodies
3.3K
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...
3.3K
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
Overview of Secretory Vesicles
7.2K
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...
7.2K
Metastasis
5.4K
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
5.4K


