在实验性多发性硬化症中,AgRP神经元对骨髓和胸腺的诺拉德林控制受损
Tiziana Vigo1, Maria C Mariani2, Caterina Bason1
1IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy.
Cell reports
|November 13, 2025
概括
交感神经系统的noradrenergic信号调节了骨髓和胸腺中的免疫细胞发育. 阿古蒂相关蛋白 (AgRP) 神经元控制这些信号,为像多发性硬化症这样的免疫媒介疾病提供潜在的治疗点.
科学领域:
- 神经免疫学 神经免疫学
- 血液形成 血液形成 血液形成
- 同情神经系统的同情神经系统.
背景情况:
- 造血干细胞和原生细胞 (HSPCs) 在骨髓 (BM) 中成熟,T淋巴细胞在胸腺中成熟.
- 这些成熟过程发生在由同情神经系统 (SNS) 的诺亚上腺素纤维透的 stromal 区域.
- 控制淋巴体器官中SNS活动的特定神经元通路尚不清楚.
研究的目的:
- 调查诺亚上腺体信号在BM和胸腺内免疫细胞发育中的作用.
- 确定神经元机制调节这些淋巴体器官的noradrenergic活动.
- 探索这些机制与免疫介导疾病之间的联系,特别是实验性自身免疫脑膜炎 (EAE) 作为多发性硬化症 (MS) 的模型.
主要方法:
- 利用EAE小鼠模型研究血液形成和T淋巴细胞调节.
- 研究了β-3上腺素受体 (B3ARs) 在BM和胸腺体中的作用.
- 检查了在EAE中表达神经元的下丘脑中agouti相关蛋白 (AgRP) 的功能.
- 与人类多发性硬化症患者的疾病严重程度和神经成像标志物相关联的血清AgRP水平.
主要成果:
- 研究人员发现,诺拉基因信号可以促进肌肉骨髓质造血,并通过B3ARs调节胸腺中调节性T淋巴细胞的频率.
- 在EAE期间,功能障碍的下丘脑AgRP神经元被确定为BM和胸腺中B3ARs的控制者.
- 人类血清AgRP水平升高与MS疾病严重程度和神经炎症标志物相关.
结论:
- 已经阐明了一种新的免疫调节机制,涉及从SNS到淋巴体器官的诺亚上腺体的传播.
- 脑下垂体AgRP神经元在通过这种途径调节免疫细胞发育中发挥着至关重要的作用.
- 这一神经免疫轴为管理多发性硬化等免疫媒介疾病提供了潜在的治疗点.
相关概念视频
T Cell Types and Functions
2.1K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
2.1K
Sympathetic Pathways: Collateral Ganglia and Adrenal Medulla
2.5K
The sympathetic pathways of the collateral ganglia and adrenal medulla serve unique but interconnected roles in the sympathetic response.
Collateral Ganglia
Sympathetic preganglionic axons reach the collateral ganglia along the route of splanchnic nerves. These nerves bypass the sympathetic trunk and communicate with sympathetic postganglionic neurons housed in the prevertebral ganglia. These ganglia supply the organs of the abdominopelvic cavity.
The greater splanchnic nerve, formed by the...
Collateral Ganglia
Sympathetic preganglionic axons reach the collateral ganglia along the route of splanchnic nerves. These nerves bypass the sympathetic trunk and communicate with sympathetic postganglionic neurons housed in the prevertebral ganglia. These ganglia supply the organs of the abdominopelvic cavity.
The greater splanchnic nerve, formed by the...
2.5K


