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长非编码RNA Malat1调节CXCR4表达,以调节诱导的神经干细胞和微质细胞之间在闭合头部损伤后的相互作用

Qin Dong¹, Pengyu Chen², Wenqiao Qiu³

¹Department of Neurology, Fu Xing Hospital, Capital Medical University, Beijing, 100038, China.

Stem cell research & therapy

|January 29, 2025

概括

诱导的神经干细胞 (iNSCs) 通过调节微质激活通过马拉特1/miR-139-5p/CXCR4轴来调节闭头损伤 (CHI) 后的神经炎症. 这一途径增强了iNSC的免疫调节作用,为CHI提供治疗潜力.

科学领域:

神经科学是一个神经科学.
免疫学免疫学免疫学
干细胞生物学干细胞生物学

背景情况:

封闭式头部损伤 (CHI) 引发显著的神经炎症,影响长期的大脑健康.
微质细胞在神经炎症,神经元损伤和CHI后的修复中发挥着至关重要的作用.
诱导的神经干细胞 (iNSCs) 通过调节微质激活来减轻CHI的影响.

研究的目的:

阐明iNSCs调高CXCR4表达的机制.
研究马拉特1,miR-139-5p和CXCR4在CHI后iNSC介导免疫调节中的作用.
了解iNSC如何感知和响应微质激活状态.

主要方法:

在iNSC与激活的微质细胞共培养的不同表达基因的生物信息分析.
功能增益和丧失研究,双露西法酶记者测试,RNA免疫沉和miRNA拉下测试.
在CHI小鼠模型中的体内细胞移植测定和统计分析 (t-test,ANOVA).

主要成果:

马拉特1作为miR-139-5p的海绵,调节CXCR4的表达,并影响iNSC对微质细胞的免疫调节作用.
抑制Malat1降低了iNSC移植对CHI小鼠微质激活和神经炎症的治疗效果.
由微质TNF-α触发的iNSC中的NF-κB激活增强了Malat1/miR-139-5p/CXCR4轴,提高了免疫调节能力.

结论:

马拉特1在微质激活iNSCs的免疫调节功能中发挥着关键作用.
移植的iNSC可以感知微质激活状态,并谨慎调节CHI后的神经炎症.
马拉特1/miR-139-5p/CXCR4轴代表了在CHI中iNSC介导的神经保护的新机制.

关键词:

在 miR-139-5p 中使用.在CXCR4中,CXCR4是CXCR4.关闭式头部伤害关闭式头部伤害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在NF-κB信号传输中.这就是TNFR1的特点.在cRNA Malat1中

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