2型糖尿病重编程骨髓血质形成和调节失调免疫信号响应中风的反应
bioRxiv : the preprint server for biology
|January 9, 2026
概括
2型糖尿病 (T2DM) 在中风后损害骨髓免疫细胞功能. 这导致糖尿病小鼠的炎症增加和中风结果较差.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢疾病 代谢疾病
- 神经科学是一个神经科学.
背景情况:
- 2型糖尿病 (T2DM) 与更糟糕的中风结果有关.
- 连接T2DM,免疫功能障碍和中风的机制尚未完全理解.
研究的目的:
- 研究T2DM如何影响小鼠中风后的骨髓造血和免疫信号.
- 在缺血性中风后,确定参与T2DM诱导的免疫失调的分子途径.
主要方法:
- 使用单细胞RNA测序,GeoMx数字空间分析 (DSP),nCounter和流细胞计.
- 从对照和糖尿病小鼠中分析了骨髓细胞,这些小鼠接受了中风或假手术.
主要成果:
- 糖尿病导致骨髓结构重塑,细胞性减少和血统不平衡.
- 在中风后观察到血造原生细胞 (HPC1) 和粒细胞分化功能受损,单细胞过度活化.
- 在HPC1和单细胞中确定了上调的MIF,SIRP和THBS通路,以及代谢转变和降低的干扰素-γ信号传递.
结论:
- T2DM重编程骨髓血液形成和信号,促进中风后的不适应性髓状反应.
- 这种改变的骨髓环境加剧了炎症,阻碍了修复,恶化了中风的结果.
- 准骨髓免疫功能障碍是糖尿病患者中风恢复的潜在治疗策略.
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