在2型糖尿病小鼠的循环单细胞中缺陷的干扰素信号传递
bioRxiv : the preprint server for biology
|June 19, 2024
概括
2型糖尿病 (T2DM) 通过改变外围单细胞,使中风的结果恶化. 这些糖尿病单细胞表现出抑制的干扰素通路,导致炎症增加和中风后大脑恢复受损.
科学领域:
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 2型糖尿病 (T2DM) 与中风的不良结果有关.
- 外围单细胞在中风后的脑损伤和恢复过程中至关重要,但T2DM的机制尚不清楚.
研究的目的:
- 为了研究T2DM和中风的反应中单细胞子集中的转录组变化和分子网络.
- 了解T2DM如何影响单细胞功能,并有助于更糟糕的中风结果.
主要方法:
- 单细胞RNA测序 (scRNAseq) 和批量RNA测序在T2DM和对照小鼠的单细胞上进行,有或没有缺血性中风.
- 使用流细胞计验证单细胞群变化.
主要成果:
- T2DM扩大了单细胞群和增加了炎症单细胞子集 (Ly6C+ MHCII-类).
- 在单细胞中,T2DM抑制了1型和2型干扰素信号通路.
- 糖尿病小鼠在中风后显示神经保护受损,干扰素调节因子-3诱导减少.
结论:
- 在T2DM中改变的单细胞多样性和转录组会加剧中风后的二次损伤和免疫抑制.
- 在T2DM中功能障碍的单细胞有助于中风的不良结果.
- 在糖尿病单细胞中抑制的干扰素通路会损害缺血性耐受性.
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