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系统性免疫挑战加剧神经退行在神经性溶酶体疾病模型中的神经退行

Oriana Mandolfo¹, Helen Parker^1,2, Èlia Aguado¹

¹Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, 3.721 Stopford Building, Manchester, UK.

EMBO molecular medicine

|June 18, 2024

概括

粘多糖症IIIA型 (MPS IIIA),一种罕见的神经退行性疾病,在病毒感染后显示出恶化的脑损伤. 介素-1β (IL-1β) 在MPS IIIA小鼠中驱动这种炎症和神经病理.

科学领域:

神经科学是一个神经科学.
免疫学免疫学免疫学
遗传学是一个遗传学.

背景情况:

粘多糖症IIIA型 (MPS IIIA) 是一种罕见的儿科 lysosomal 储存障碍.
在MPS IIIA中肝酸盐的积累导致神经认知能力下降和行为问题.
感染可能会在MPS IIIA中恶化神经退行,这表明炎症的作用.

研究的目的:

研究炎症,特别是IL-1β在MPS IIIA中恶化的神经病理学中的作用.
测试病毒模仿挑战在MPS IIIA模型中恶化神经退行症的假设.

主要方法:

野生型 (WT) 和MPS IIIA小鼠被挑战了多种I:C,一种TLR3依赖的病毒模仿.
进行了急性高剂量和低剂量慢性多样性 (I:C) 挑战.
分析了海马中的细胞因子表达,caspase-1活性和神经元/质标记物表达 (GFAP, NeuN).

主要成果:

多I:C) 挑战增加了系统和大脑细胞因子的表达,特别是MPS IIIA小鼠海马中的IL-1β.
在MPS IIIA小鼠中观察到增加的caspase-1活性和海马GFAP和NeuN表达的丧失.
在MPS IIIA小鼠中,经过慢性低剂量多I:C暴露后,观察到类似的细胞损伤和恶化的结晶体.

结论:

介素-1β (IL-1β) 在MPS IIIA中催化神经病理过程中发挥着关键作用.
由IL-1β驱动的炎症显著加剧了MPS IIIA中的神经退行.
这些发现支持IL-1β作为管理MPS IIIA相关神经病理的关键目标.

关键词:

在炎症中,一些细胞会发炎.粘多糖糖症是什么粘多糖糖症是什么神经退行发生神经退行.神经炎症是一种神经炎症.圣菲利普波 (Sanfilippo) 是一个城市.

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Lysosomal Hydrolases

Lysosomal Hydrolases

Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...