对于人类大脑微血管内皮细胞的表型,需要III型依赖的无机酸盐载体
Kazuki Ohuchi1, Ku Watanabe1, Mutsuko Izutsu1
1Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-25-4 Daigaku-Nishi, Gifu, 501-1196, Gifu, Japan.
Experimental cell research
|April 12, 2025
概括
由SLC20A1或SLC20A2改变的无机酸盐 (Pi) 运输会影响大脑内皮细胞的功能. 虽然SLC20A2的枯竭增加了细胞内Pi,但它在初级大脑化内皮病理学中起不大作用.
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
- 血管生物学 血管生物学
背景情况:
- 无机酸盐 (Pi) 稳态对于大脑健康至关重要,并防止大脑初级化 (PBC).
- 在SLC20A2中发生的突变,一种编码III型Pi载体的基因,是PBC的主要原因,导致大脑小血管的化.
- 包括SLC20A1和SLC20A2在内的SLC20家族对中枢神经系统的Pi平衡有影响,但它们对大脑血管系统的具体影响尚不清楚.
研究的目的:
- 研究SLC20A1或SLC20A2耗尽对人类大脑微血管内皮细胞 (hBMECs) 表型的影响.
- 确定这些Pi载体在内皮细胞增殖,管形成和VE-cadherin表达中的作用.
主要方法:
- 人类大脑的微血管内皮细胞 (hBMEC) 对于SLC20A1或SLC20A2.2进行了沉默.
- 评估了包括增殖,管形成和VE-cadherin表达在内的细胞表型.
- 细胞内无机酸盐度 ([Pi]i) 在沉默细胞中测量.
主要成果:
- 在hBMEC中抑制SLC20A1或SLC20A2导致扩散和血管生成能力降低.
- 在SLC20A1和SLC20A2沉默的hBMEC中,VE-cadherin的表达减少.
- 细胞内Pi ([Pi]i) 在SLC20A1静止细胞中保持稳定,但在SLC20A2静止细胞中增加,对管形成没有显著影响.
结论:
- 缺少SLC20A1和SLC20A2会损害关键的血管内皮细胞功能.
- 虽然SLC20A2的枯竭增加了细胞内Pi,但这种升高似乎对观察到的内皮细胞表型产生了最小的影响.
- 由于SLC20A2耗尽而导致的Pi恒温的异常可能在原发性脑化的内皮病理中起小作用.
更多相关视频
08:04Derivation, Expansion, Cryopreservation and Characterization of Brain Microvascular Endothelial Cells from Human Induced Pluripotent Stem Cells
Published on: November 19, 2020
6.3K
16:26Setting-up an In Vitro Model of Rat Blood-brain Barrier BBB: A Focus on BBB Impermeability and Receptor-mediated Transport
Published on: June 28, 2014
42.3K
相关概念视频
01:30ATP Driven Pumps III: V-type Pumps
3.5K
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
3.5K
01:23Transcellular Transport of Solutes
3.3K
Transcellular transport of solutes is the movement of substances like monosaccharides and amino acids through polarized cells. This transport mechanism is primarily seen in epithelial and endothelial cells aided by membrane transport proteins such as channels and transporters. The tight junctions between these cells confine the membrane proteins to the two sides of the cell. The epithelial cells have distinct apical and basolateral domains. In contrast, the endothelial cells show the luminal...
3.3K