AKT信号升级调节诱导的神经干细胞中的BDNF表达,这些干细胞与微质细胞相互作用
Wenjia Wang1,2, Wenqiao Qiu3, Pengyu Chen4
1Senior Department of Neurosurgery, The First Medical Center of PLA General Hospital, Beijing, 100853, China.
Stem cell research & therapy
|July 22, 2025
概括
激活的AKT信号通过调节EZH2和CREB通路来调节神经干细胞 (NSC) 中的大脑衍生神经营养因子 (BDNF). 这一发现对于闭合头部损伤 (CHI) 后的神经恢复至关重要.
科学领域:
- 神经科学是一个神经科学.
- 干细胞生物学 干细胞生物学
- 分子生物学分子生物学
背景情况:
- 大脑衍生神经营养因子 (BDNF) 是关闭头部损伤 (CHI) 后神经元存活和神经恢复的重要因素.
- 诱导的神经干细胞 (iNSCs) 的脑内移植已经显示出在受CHI损伤的大脑中具有上调BDNF的潜力.
- 需要阐明iNSCs调节BDNF的精确机制.
研究的目的:
- 调查iNSCs中BDNF上调的基础分子机制.
- 确定AKT信号传导在iNSCs中调节BDNF表达中的作用.
- 探索AKT,EZH2和CREB在调节BDNF中的相互作用.
主要方法:
- 涉及iNSCs和脂多糖 (LPS) 激活微质的共同培养实验.
- 在CHI的小鼠模型中进行体内iNSC移植.
- 功能丧失研究,形态学和分子生物学分析 (例如,西式涂抹,ChIP).
主要成果:
- 与LPS激活的微质细胞共同培养增加了iNSC中的BDNF表达和特定的Bdnf外子水平.
- AKT 抑制抵消了微质效应,降低了 Bdnf 促进物 IV 的增强剂 zeste 同源 2 (EZH2) 和 H3K27 三甲基化,同时增加了 EZH2 酸化和 BDNF.
- AKT抑制还通过降低cAMP反应元素结合蛋白 (CREB) 水平和Bdnf促进体I和IV的酸化来抵消微质效应.
结论:
- AKT信号传递在调节iNSCs中BDNF表达方面发挥着关键作用.
- AKT的激活通过不激活EZH2 (减少促进器IV的EZH2和H3K27me3) 和激活CREB (增加促进器I和IV的CREB水平) 来调节BDNF.
- 在移植的iNSC中准AKT信号可能会增强BDNF表达,从而在CHI中获得治疗效益.
关键词:
在 AKT AKT 里面.这就是为什么BDNF是BDNF.克里布 (Creb) 是一个有趣的词汇.关闭式头部伤害 关闭式头部伤害在 EZH2 中使用.H3K27me3 在线阅读诱导的神经干细胞诱导的神经干细胞.微质细胞中的微质细胞更多相关视频
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