在自身免疫介导的神经炎症中,CHI3L1信号破坏海马神经发生和认知功能
Wei Jiang1, Fan Zhu1, Huiming Xu1
1Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, 600 Tianhe Road, Guangzhou, Guangdong Province 510630, China.
Science advances
|September 27, 2023
概括
来自激活天体细胞的基因酶-3样蛋白1 (CHI3L1) 损害了神经干细胞生长和神经光学炎 (NMO) 中的认知功能. 降低CHI3L1水平可以恢复NMO模型中的神经发生和认知能力.
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:
- 基因酶-3样蛋白1 (CHI3L1) 是中枢神经系统 (CNS) 炎症的生物标志物.
- 光学神经炎 (NMO) 是一种针对水素4 (AQP4) 的自身免疫天体细胞疾病,导致神经学缺陷.
- CHI3L1是由激活的星球细胞分泌的,其在NMO相关的神经炎症中的作用需要阐明.
研究的目的:
- 研究CHI3L1在NMO中神经炎症和认知障碍中的生物功能.
- 探索CHI3L1影响神经干细胞和神经发生的分子机制.
- 评估CHI3L1作为NMO和相关的神经炎症疾病的潜在治疗点.
主要方法:
- 在NMO患者中,CHI3L1表达与认知障碍的相关性分析.
- 在体外研究神经干细胞的增殖和分化,以响应CHI3L1.
- 鼠标模型的NMO评估海马神经发生和学习行为.
- 对CHI3L1/CRTH2受体和β-catenin信号通路的研究.
主要成果:
- 在NMO患者中,CHI3L1表达与认知障碍正相关.
- 激活的天体细胞在对AQP4自身抗体的反应中分泌CHI3L1,抑制神经干细胞的增殖和神经元的分化.
- 星球细胞中CHI3L1的枯竭挽救了海马神经发生的减少,并在小鼠模型中改善了学习行为.
- 这种CHI3L1/CRTH2相互作用抑制β-catenin信号传递,阻碍神经发生.
结论:
- 通过抑制神经发生,CHI3L1在与NMO相关的认知衰退中发挥着关键作用.
- 针对CHI3L1/CRTH2/β-catenin通路为NMO等神经炎症性疾病提供了潜在的治疗策略.
- CHI3L1是关键的调解者,将星球细胞激活,神经炎症和NMO中的认知功能障碍联系起来.
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