大型细胞外囊泡转移更多的子,比小细胞外囊泡更好地感染细胞培养物
Jakub Soukup1, Tibor Moško2, Sami Kereïche3
1Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, 128 00, Prague, Czech Republic; Department of Genetics and Microbiology, Faculty of Science, Charles University, 128 44, Prague, Czech Republic.
Biochemical and biophysical research communications
|November 10, 2023
概括
大型细胞外囊泡 (lEVs) 在传播子方面比小细胞外囊泡 (sEVs) 更有效. 这一发现突显了LEVs在子病传播和神经退行症中被忽视的作用.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 子在人类和动物中引起致命的神经退行性疾病.
- 细胞外囊泡 (EVs) 与疾病传播有关,小EVs (sEVs) 被广泛研究.
- 较大的微 (lEVs) 在病研究中经常被忽视.
研究的目的:
- 为了比较大型细胞外囊泡 (lEVs) 和小型细胞外囊泡 (sEVs) 的子传播能力.
- 调查不同尺寸的EV在子贩运和传播中的作用.
主要方法:
- 使用CAD5和N2a-PK1细胞培养模型的子感染.
- 使用微分离心 (20,000×g和110,000×g,分别) 隔离的lEVs (≥100 nm) 和sEVs (<100 nm).
- 量化子蛋白丰富和子转化活性在单独的EV分数中,通过西部涂抹和基于细胞的测试.
主要成果:
- 无论是lEV还是sEV都含有蛋白,但lEV的转化活性更高.
- lEVs显示了β-1整合素的丰富,这是较大的囊泡的特征.
- 与sEVs相比,与lEVs感染导致细胞培养中显著更强的子信号.
结论:
- 大型细胞外囊泡 (lEVs) 在子贩运和传播中起着至关重要的作用.
- 这项研究强调了lEVs在病病原体中的重要性,挑战了对sEVs的关注.
- 研究结果表明,lEVs是子疾病的潜在治疗标.
相关概念视频
Overview of Secretory Vesicles
8.6K
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...
8.6K
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


