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耳经皮迷走神经刺激通过激活α7烟碱型乙酰胆碱受体抑制铁死亡,促进小鼠脑卒中后神经和认知功能恢复。

Auricular Transcutaneous Vagus Nerve Stimulation Enhances Post-Stroke Neurological and Cognitive Recovery in Mice by Suppressing Ferroptosis Through α7 Nicotinic Acetylcholine Receptor Activation.

作者信息

Gong Hongyan, Zheng Fang, Niu Bochao, Wang Bin, Xu Lin, Yang Yunchao, Wang Jiahan, Tang Xiaopeng, Bi Yanlin

机构信息

MOE Key Laboratory for Neuroinformation, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China.

Department of Anesthesiology, Qingdao Municipal Hospital, Qingdao Hospital of Health and Rehabilitation Sciences University, Qingdao, China.

出版信息

CNS Neurosci Ther. 2025 May;31(5):e70439. doi: 10.1111/cns.70439.


DOI:10.1111/cns.70439
PMID:40376919
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12082278/
Abstract

AIMS: Ferroptosis plays a critical role in stroke pathophysiology, yet its dynamics during recovery remain unclear. This study aimed to investigate the evolution of ferroptosis throughout post-stroke recovery and evaluate auricular transcutaneous vagus nerve stimulation (atVNS) as a therapeutic intervention, focusing on the involvement of α7 nicotinic acetylcholine receptor (α7nAChR)-mediated mechanisms. METHODS: Using a middle cerebral artery occlusion (MCAO) mouse model, we examined ferroptosis-related protein expression (GPX4, ACSL4, TfR) and iron levels across acute to chronic recovery phases. The therapeutic effects of atVNS were evaluated through the assessment of ferroptosis markers, neurogenesis, angiogenesis, cognitive function, and neuroinflammation. α7nAChR knockout mice were used to investigate the receptor's role in atVNS-mediated recovery. RESULTS: We observed sustained alterations in ferroptosis markers and iron levels throughout post-stroke recovery. atVNS treatment reduced ferroptosis progression by modulating GPX4 and ACSL4 expression, enhanced neurogenesis and angiogenesis, improved cognitive recovery, and reduced neuroinflammation. These beneficial effects were absent in α7nAChR knockout mice, while atVNS increased neuronal α7nAChR expression in wild-type mice. CONCLUSIONS: This study reveals the persistent involvement of ferroptosis in stroke recovery and demonstrates that atVNS provides comprehensive neuroprotection through α7nAChR-dependent mechanisms. These findings establish atVNS as a promising noninvasive therapeutic approach for stroke recovery and highlight α7nAChR signaling as a potential therapeutic target.

摘要

目的:铁死亡在中风病理生理学中起关键作用,但其在恢复过程中的动态变化仍不清楚。本研究旨在探讨中风后恢复过程中铁死亡的演变,并评估耳经皮迷走神经刺激(atVNS)作为一种治疗干预措施,重点关注α7烟碱型乙酰胆碱受体(α7nAChR)介导的机制的参与情况。 方法:使用大脑中动脉闭塞(MCAO)小鼠模型,我们检测了从急性到慢性恢复阶段铁死亡相关蛋白表达(GPX4、ACSL4、TfR)和铁水平。通过评估铁死亡标志物、神经发生、血管生成、认知功能和神经炎症来评估atVNS的治疗效果。使用α7nAChR基因敲除小鼠来研究该受体在atVNS介导的恢复中的作用。 结果:我们观察到中风后恢复过程中铁死亡标志物和铁水平持续变化。atVNS治疗通过调节GPX4和ACSL4表达减少了铁死亡进展,增强了神经发生和血管生成,改善了认知恢复,并减轻了神经炎症。这些有益效果在α7nAChR基因敲除小鼠中不存在,而atVNS增加了野生型小鼠中神经元α7nAChR的表达。 结论:本研究揭示了铁死亡在中风恢复中的持续参与,并表明atVNS通过α7nAChR依赖的机制提供全面的神经保护。这些发现确立了atVNS作为一种有前景的中风恢复无创治疗方法,并突出了α7nAChR信号作为潜在治疗靶点的重要性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7900/12082278/c0d10a2e20a7/CNS-31-e70439-g001.jpg
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相似文献

[1]
Auricular Transcutaneous Vagus Nerve Stimulation Enhances Post-Stroke Neurological and Cognitive Recovery in Mice by Suppressing Ferroptosis Through α7 Nicotinic Acetylcholine Receptor Activation.

CNS Neurosci Ther. 2025-5

[2]
Vagus nerve stimulation as a promising neuroprotection for ischemic stroke via α7nAchR-dependent inactivation of microglial NLRP3 inflammasome.

Acta Pharmacol Sin. 2024-7

[3]
α7nAchR mediates transcutaneous auricular vagus nerve stimulation-induced neuroprotection in a rat model of ischemic stroke by enhancing axonal plasticity.

Neurosci Lett. 2020-6-21

[4]
Mechanisms underlying antidepressant effect of transcutaneous auricular vagus nerve stimulation on CUMS model rats based on hippocampal α7nAchR/NF-κB signal pathway.

J Neuroinflammation. 2021-12-17

[5]
[Effect of transcutaneous auricular vagus nerve stimulation on the expressions of GFAP and MAP2 in ischemic penumbra of rats with middle cerebral artery ischemia].

Zhen Ci Yan Jiu. 2022-1-25

[6]
Anti-neuroinflammation effects of transcutaneous auricular vagus nerve stimulation against depression-like behaviors via hypothalamic α7nAchR/JAK2/STAT3/NF-κB pathway in rats exposed to chronic unpredictable mild stress.

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[7]
[Transcutaneous auricular vagus nerve stimulation promotes gastric motility by up-rgulating α7nAChR and suppressing NF-κB p65 expression in duodenum in rats with functional dyspepsia].

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[8]
Involvement of arterial baroreflex and nicotinic acetylcholine receptor α7 subunit pathway in the protection of metformin against stroke in stroke-prone spontaneously hypertensive rats.

Eur J Pharmacol. 2017-3-5

[9]
A combination of neostigmine and anisodamine protects against ischemic stroke by activating α7nAChR.

Int J Stroke. 2015-7

[10]
[Effect of transcutaneous auricular vagus nerve stimulation on the splenic α7nAchR/JAK2/STAT3 signaling pathway in LPS-induced depressive-like behavior rats].

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本文引用的文献

[1]
Enhancing Neuron Activity Promotes Functional Recovery by Inhibiting Microglia-Mediated Synapse Elimination After Stroke.

Stroke. 2025-2

[2]
Persistent Ferroptosis Modulates Cardiac Remodeling and M2 Macrophage Polarization, Which Can be Mitigated by Astaxanthin During Myocardial Infarction Recovery.

Cardiovasc Toxicol. 2025-1

[3]
Vagus nerve stimulation recruits the central cholinergic system to enhance perceptual learning.

Nat Neurosci. 2024-11

[4]
The Interplay between Ferroptosis and Neuroinflammation in Central Neurological Disorders.

Antioxidants (Basel). 2024-3-26

[5]
Vagus nerve stimulation as a promising neuroprotection for ischemic stroke via α7nAchR-dependent inactivation of microglial NLRP3 inflammasome.

Acta Pharmacol Sin. 2024-7

[6]
Neurostimulation treatments for epilepsy: Deep brain stimulation, responsive neurostimulation and vagus nerve stimulation.

Neurotherapeutics. 2024-4

[7]
Transferrin Receptor is Associated with Sensitivity to Ferroptosis Inducers in Hepatocellular Carcinoma.

Ann Surg Oncol. 2023-12

[8]
Pharmacological Inhibition of Ferroptosis as a Therapeutic Target for Neurodegenerative Diseases and Strokes.

Adv Sci (Weinh). 2023-8

[9]
Cognitive Recovery After Stroke: Memory.

Stroke. 2023-1

[10]
Effect of Exercise Training or Complex Mental and Social Activities on Cognitive Function in Adults With Chronic Stroke: A Randomized Clinical Trial.

JAMA Netw Open. 2022-10-3

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