该CCL2-CCR2轴驱动的神经肌肉缩在肌缩性侧面硬化症
Bernát Nógrádi1,2,3,4, Kinga Molnár4, Rebeka Kristóf4
1Edinburgh Medical School: Biomedical Sciences, University of Edinburgh, Edinburgh, UK.
Nature communications
|August 1, 2025
概括
免疫细胞通过CCL2-CCR2通路透到肌肉神经结节,从而导致肌缩性侧面硬化症 (ALS) 的发生. 准这个轴可能会防止ALS患者的NMJ化.
科学领域:
- 神经免疫学 神经免疫学
- 骨肌肉病理生理学 骨肌肉病理生理学
- 运动神经元疾病 运动神经元疾病
背景情况:
- 系统性免疫变化与肌缩侧面硬化症 (ALS) 有关.
- 神经肌肉结节 (NMJ) 缩是ALS病理学的一个关键特征.
- 免疫失调在ALS中NMJ缺血的作用尚不清楚.
研究的目的:
- 调查免疫细胞透在ALS病变的参与,特别是在NMJ.
- 确定驱动免疫细胞透和ALS中NMJ变核的分子机制.
- 评估针对已识别的免疫路径的治疗潜力.
主要方法:
- 从ALS患者的骨肌肉活检和转基因小鼠模型 (hTDP-43,TDP-43A315T,TDP-43M337V) 的分析.
- 评估白细胞和巨细胞的透,特别是在NMJ丰富的区域.
- 蛋白质组分析以确定涉及的关键分子通路.
- 在hTDP-43小鼠模型中用CCL2中和抗体进行体内治疗.
主要成果:
- 在ALS患者肌肉和所有测试的小鼠模型中,在症状出现之前观察到白细胞和巨细胞的透.
- 免疫细胞透局部化到NMJ丰富的区域.
- 蛋白质组分析确定了CCL2-CCR2轴作为免疫细胞透的关键驱动因素.
- 在小鼠和患者中,CCL2表达细胞集中在NMJs周围.
- 在hTDP-43小鼠中,用CCL2中和抗体治疗减少了免疫细胞的透,并改善了NMJ化.
结论:
- CCL2-CCR2轴是驱动ALS中NMJs免疫细胞透的关键机制.
- 针对NMJs的免疫细胞透有助于ALS的缩.
- 准CCL2-CCR2通路是一个潜在的治疗策略,可以预防ALS的NMJ化.
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