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在疼痛性糖尿病神经病变中,质细胞衍生的外体

James Coy-Dibley¹, Nirupa D Jayaraj¹, Dongjun Ren²

¹Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.

bioRxiv : the preprint server for biology

|September 4, 2024

概括

角质细胞衍生外体 (KDE) 可能通过改变皮肤神经通信来驱动痛苦的糖尿病神经病变 (PDN). 这项研究揭示了KDE对神经元的流量,为PDN提供了潜在的新局部治疗方法.

科学领域:

神经科学是一个神经科学.
皮肤病学皮肤病学
细胞生物学细胞生物学

背景情况:

疼痛性糖尿病神经病变 (PDN) 是糖尿病的常见并发症,其特点是神经退化和有限的治疗选择.
皮细胞,主要的表皮细胞,与皮肤神经末端相邻,表明在皮肤神经信号传递中发挥作用.
外基因组调解细胞间的通信,但它们在PDN病变发生中的作用仍然未被探索.

研究的目的:

研究状细胞衍生外体 (KDE) 在PDN的发展中的作用.
在PDN的小鼠模型中描述KDE的分子载荷.
为了确定KDE是否影响PDN中的神经信号传递.

主要方法:

使用初级成年老鼠角质细胞培养物来隔离KDE.
大小排除色谱丰富了KDE用于蛋白质和小RNA测序.
一个体内EV记者小鼠模型跟踪KDE贩运到背部根结节 (DRG) 神经元.

主要成果:

与对照KDE相比,HFD诱导的KDE显示出不同的蛋白质和microRNA配置文件.
这些配置文件涉及轴突引导和突触传输中的途径.
表皮衍生的KDE被证明可以逆行转移到DRG神经元细胞体中.

结论:

KDE代表了皮肤角质细胞和DRG神经元之间的新型通信途径.
KDE可能会导致PDN的底层轴突退化.
准皮肤中的KDE为新的局部PDN疗法提供了潜力.

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