通过JAK2/STAT3轴,TREM2损害糖解,以中断微质M1的极化和炎症
1Psychiatric Ward 1, Wuhan Wuchang Hospital, Wuhan, 430061, Hubei, China.
Cell biochemistry and biophysics
|September 6, 2024
概括
在骨髓细胞2 (TREM2) 上表达的触发受体通过减少炎症和糖解提供了对脑缺血/再损伤 (IRI) 的保护. 在中风模型中,TREM2 禁用了 JAK2/STAT3 途径,促进了有益的 M2 巨细胞两极分化.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 大脑缺血/反损伤 (IRI) 是缺血性中风的主要原因,导致严重的残疾和死亡率.
- 在骨髓细胞2 (TREM2) 上表达的触发受体已经成为大脑缺血性中风的潜在保护因素.
- 了解TREM2的机制对于开发针对性治疗治疗中风相关的大脑损伤至关重要.
研究的目的:
- 阐明TREM2在缓解大脑IRI中的活性和下游机制.
- 在中风的细胞模型中研究TREM2在调节炎症反应,巨细胞极化和糖解中的作用.
主要方法:
- 用小鼠微质BV2细胞进行氧气-葡萄糖剥夺和再注射 (OGD/R),以模拟大脑IRI.
- 西部涂抹,ELISA,RT-qPCR和免疫光被用于评估TREM2表达,JAK2 / STAT3信号,炎症性细胞因子,巨分化和甘油性活性.
- 在OGD/R条件下评估了TREM2操纵和STAT3激活的影响.
主要成果:
- 在BV2细胞中,OGD/R诱导了异常的TREM2表达和异常的JAK2/STAT3轴激活.
- 升高的TREM2表达抑制了炎症和糖解,抑制了JAK2/STAT3轴,并促进了M1-to-M2巨细胞的两极分化.
- 在TREM2-过度表达细胞中,STAT3激活加剧了葡萄糖分解,炎症和M1-样极化,这表明TREM2对这些过程具有抑制作用.
结论:
- 在大脑IRI中,TREM2表现出抗炎作用的潜力,很可能是通过通过JAK2/STAT3轴不激活糖解路径.
- TREM2促进了从促炎M1转向抗炎M2巨细胞的转变,有助于神经保护.
- 向TREM2可能通过调节炎症和代谢途径来提供一种新的治疗策略来管理缺血性中风.
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