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Guanghao Chi¹, Junqin Lu², Tao He³

¹Department of Orthopedics, Hanzhong Central Hospital, Hanzhong, 723000, Shanxi, China.

Scientific reports

|September 27, 2024

概括

高流动性组盒子-1蛋白 (HMGB1) 在脊髓损伤 (SCI) 后驱动天体细胞产生的C-C动机化学激素连接体5 (CCL5) 产生的蛋白质. 抑制HMGB1可以减少炎症并改善运动功能的恢复.

科学领域:

神经科学是一个神经科学.
免疫学免疫学免疫学
细胞生物学细胞生物学

背景情况:

星体细胞在中枢神经系统 (CNS) 中作为免疫细胞起作用.
脊髓损伤 (SCI) 引发了由于免疫细胞透而导致的过度炎症.
在SCI中,天体细胞衍生化学因子的调控机制尚不清楚.

研究的目的:

在SCI中,研究C-C动机化学基因连接体5 (CCL5) 与高流动性组盒子-1蛋白 (HMGB1) 之间的相关性.
阐明HMGB1在调节星细胞CCL5产生中的作用.
探索针对SCI中的HMGB1-CCL5轴的治疗潜力.

主要方法:

在T8-T10区域的脊髓伤模型.
对CCL5和HMGB1蛋白水平的测量.
使用HMGB1中和抗体.
使用星体细胞,TLR2 / 4和NF-κB通路分析的体外研究.
评估微质/巨细胞的积累和两极分化.
运动功能恢复的评估.

主要成果:

SCI诱导HMGB1和CCL5蛋白水平的同步增加.
在SCI后,HMGB1中和显著降低了CCL5表达.
HMGB1通过TLR2/4和ERK/JNK/NF-κB通路激活了星球细胞以产生CCL5.5.
HMGB1诱导的CCL5促进了微质/巨细胞的积累和M1极化.
抑制HMGB1降低了CCL5,减少了炎症,并改善了运动功能.

结论:

在SCI之后,HMGB1是星细胞CCL5产生的关键调节者.
HMGB1-CCL5通路通过招募和两极分化的免疫细胞加剧神经炎症.
向HMGB1为SCI后的中枢神经系统炎症提供了潜在的治疗策略.

关键词:

星球细胞是星球细胞.CCL5 CCL5 CCL5 CCL5 CCL5 CCL5 CCL5 CCL5 CCL5 CCL5 CCL5 CCL5 化学因子 (chemokines) 是一种化学物质.这就是HMGB1的特点.炎症炎症是一种炎症.脊髓损伤导致的脊髓损伤

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