与PIWI相互作用的RNAMIABEPIR通过DAPK2通路调节大脑内皮细胞功能,在母体免疫激活后,在后代中通过DAPK2通路调节大脑内皮细胞功能
Shan-Shan Li1, Miao Guo1, Yao Long1
1School of Medicine, Nankai University, Tianjin, China.
Clinical and translational medicine
|February 25, 2025
概括
孕产妇免疫激活 (MIA) 通过改变大脑内皮细胞中的新型piRNA (MIABEPIR) 来破坏大脑发育. 这种piRNA影响血脑屏障的完整性,并可能为神经发育障碍提供治疗点.
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
- 发展生物学 发展生物学
背景情况:
- 母亲免疫激活 (MIA) 是神经发育障碍的危险因素.
- 将MIA与神经血管功能障碍联系在一起的分子机制尚未完全理解.
研究的目的:
- 确定参与MIA诱导的神经血管功能障碍的新型分子通路.
- 在MIA期间调查piRNAs在调节脑内皮细胞 (BMEC) 功能和血脑屏障 (BBB) 完整性方面的作用.
主要方法:
- 来自暴露于MIA的小鼠胎儿大脑组织的RNA微阵列分析.
- 免疫光和光在现场混合 (FISH) 来确认MIABEPIR的局部化.
- 在体内研究,包括对胎儿小鼠进行内注射的lentiviral MIABEPIR.
- 机制研究以确定MIABEPIR的下游目标.
主要成果:
- 一种与MIA相关的新型脑内皮皮RNA (MIABEPIR) 已被确定,并被发现在暴露于MIA的小鼠中受到上调.
- MIABEPIR局部存在于大脑的微血管内皮细胞中.
- 过度表达MIABEPIR增强了BMEC增殖和血管生成,但破坏了BBB的完整性.
- 在体内给予MIABEPIR导致了显著的BBB干扰.
- 米阿贝皮尔降低了DAPK2的调节,抑制了BMECs中的自.
结论:
- 在MIA的背景下,MIABEPIR是BMEC功能和BBB完整性的关键调节者.
- MIABEPIR-DAPK2-自途径代表了MIA诱导的神经血管功能障碍背后的一种新机制.
- 针对MIABEPIR-DAPK2轴为与母亲免疫应激相关的神经发育障碍提供了潜在的治疗策略.
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