缺氧诱导的miR-101通过改变VE-Cadherin和Claudin-5损害了内皮屏障的完整性
Astha Shukla1, Utkarsh Bhardwaj1, Apoorva1
1Molecular Biology Unit, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, UP, India.
Molecular neurobiology
|September 30, 2023
概括
在缺氧期间,MicroRNA-101通过减少VE-cadherin等关键蛋白质来破坏血脑屏障 (BBB). 这一发现对于理解中风和开发新的治疗策略至关重要.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 卒中对全球健康构成威胁,通常会损害血脑屏障 (BBB).
- 大脑的微血管内皮细胞形成BBB,通过结节蛋白保持其完整性.
- 这些蛋白质的破坏损害了BBB功能,增加了与中风相关的损伤.
研究的目的:
- 研究微RNA (miRNA) 在缺氧引起的大脑内皮屏障破坏中的作用.
- 阐明缺氧影响BBB完整性的分子机制.
主要方法:
- 大脑内皮细胞受到低氧条件的影响.
- 技术包括西式涂抹,miRNA过度表达/敲击,实时PCR,超内皮电阻 (TEER) 和光素测定.
- 通过测量HIF-1α蛋白水平来确认缺氧.
主要成果:
- 低性暴露显著降低了内皮屏障抵抗力,并增加了素透性.
- 这些变化表明BBB完整性受损,透性增加.
- 发现MicroRNA-101可以降低缺氧性脑内皮细胞中VE-cadherin和claudin-5的表达.
结论:
- 低氧诱导的BBB干扰涉及微RNA-101.1对VE-cadherin和claudin-5的下调.
- 在低氧压力下,MicroRNA-101在维持内皮屏障完整性方面发挥着至关重要的作用.
- 这些发现提供了对中风和相关疾病的潜在治疗点的见解.
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