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多巴胺驱动的IL-1β在骨髓细胞中的增加是由差异性多巴胺受体表达的介导,并被HIV恶化

Stephanie M Matt¹, Rachel Nolan^1,2, Samyuktha Manikandan²

¹Department of Pharmacology and Physiology, Drexel University College of Medicine, 245 N. 15th Street, Philadelphia, PA, 19102, USA.

Journal of neuroinflammation

|March 24, 2025

概括

多巴胺通过调节髓状细胞中IL-1β的产生来影响炎症,受体比率是关键. 这影响了艾滋病毒等慢性疾病,这表明对物质使用障碍和神经炎症的治疗含义.

科学领域:

神经免疫学神经免疫学
具有天生的免疫力.
分子生物学分子生物学

背景情况:

多巴胺是一种神经递质,调节中枢神经系统功能,在外周器官和免疫调节中发挥越来越多的作用.
以前的研究表明,多巴胺增强了NF-κB活性,炎症酶激活和人类巨细胞中的IL-1β产生.
多巴胺对骨髓炎炎的影响是复杂的,涉及D1类和D2类多巴胺受体,但精确的途径尚不清楚.

研究的目的:

为了研究这种假设,多巴胺介导的IL-1β在骨髓细胞中的产生是由激活的多巴胺受体的比率调节的.
阐明多巴胺受体表达在调节多巴胺在人类巨细胞和微质细胞中的炎症作用中的作用.

主要方法:

主要人类单细胞衍生的巨细胞 (hMDM) 和人类微质细胞系被用来研究多巴胺对IL-1β产生的影响.
用药学抑制和多巴胺受体的过度表达来评估它们的作用.
对多巴胺治疗的微质进行了RNA测序,以分析基因表达变化.

主要成果:

在hMDM中因多巴胺诱导的IL-1β增加中,DRD1表达是必不可少的;DRD2表达的改变改变了这一效应.
成熟的hMDM表现出高的D1-类与D2-类受体比率,促进多巴胺诱导的IL-1β基因和微质中的蛋白质表达.
多巴胺治疗提高了参与IL-1β信号传递,微质激活和微质神经传递的基因.
在HIV的背景下,多巴胺加剧了巨细胞和微质细胞中的炎症酶激活和IL-1β产生.

结论:

类似于D1的多巴胺受体与类似于D2的多巴胺受体的比率极大地调节了多巴胺对髓状细胞IL-1β产生的促炎作用.
通过物质使用或治疗来调节多巴胺信号的失调,可能会损害先天免疫力,并恶化慢性神经炎症状况,如艾滋病毒.
了解多巴胺介导炎症途径对于开发针对慢性炎症和神经免疫疾病的向治疗至关重要.

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