受RSV诱导的谷氨酸通过肺-大脑轴调节神经元线粒体异质性
Taorui Du1,2, Ousman Bajinka2, Amie N Joof2
1Department of Pathology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
Journal of medical virology
|October 1, 2025
概括
呼吸道同胞性病毒 (RSV) 感染会增加谷氨酸,破坏神经细胞线粒体,并通过肺-大脑轴恶化神经炎症. 这项研究揭示了针对RSV的神经保护的潜在目标.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 代谢学 代谢学 代谢学
背景情况:
- 呼吸道同胞性病毒 (RSV) 感染与神经炎症有关.
- 谷氨酸和线粒体功能障碍在RSV诱导的神经炎症中的作用尚不清楚.
- 了解病毒感染中的肺脑轴对于开发治疗策略至关重要.
研究的目的:
- 研究RSV感染诱导的谷氨酸如何影响神经细胞线粒体异质体.
- 阐明谷氨酸加剧神经炎症的机制.
- 探索向谷氨酸或其相关神经保护途径的潜力.
主要方法:
- 建立了一个RSV感染的动物模型和一个由脂聚糖 (LPS) 诱导的神经炎症细胞模型.
- 使用了代谢分析,CCK8测定,DCFH-DA探针,ELISA,RT-qPCR,免疫光学和高性能液态染色学 (HPLC).
- 评估了细胞增殖,活性氧物种 (ROS) 水平,细胞因子表达 (IL-1,IL-4,IL-6,IFN-γ),Drp1和Mfn2表达,以及神经元生物标志物 (PGP9.5,NeuN).
主要成果:
- 感染RSV导致葡萄糖酸水平升高.
- 谷氨酸治疗提高了Drp1的表达,降低了Mfn2的表达,并增加了ROS,IL-1和IL-6水平.
- 发现谷氨酸与NAD-依赖的酸脱酶 (NAD-ME) 相互作用,加速线粒体失衡.
结论:
- 由RSV感染引起的谷氨酸通过通过肺-大脑轴影响神经细胞线粒体平衡来加剧神经炎症.
- 谷氨酸破坏了线粒体平衡,并与NAD-ME相互作用,导致神经炎症.
- 这些发现为RSV诱导的神经炎症提供了新的见解,并表明了潜在的神经保护点.
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