中国神经再生研究(英文版) ›› 2026, Vol. 21 ›› Issue (7): 3092-3102.doi: 10.4103/NRR.NRR-D-24-00912

• 原著:脊髓损伤修复保护与再生 • 上一篇    下一篇

经脊髓磁刺激减轻脊髓损伤致神经性疼痛:上调小胶质细胞CaMKKβ/AMPK/SOCS3信号通路以减轻神经炎症

  

  • 出版日期:2026-07-15 发布日期:2026-04-01

Trans-spinal magnetic stimulation upregulates microglial SOCS3 to attenuate neuroinflammation in chronic constriction injury–induced neuropathic pain

Qi Wu1, 2, #, Xingjun Xu3, #, Chenyuan Zhai4, #, Jili Cai2, Zun Wang2, Lu Fang2, Yu Wang2, Yilun Qian2, Manyu Dong2, Liang Hu5, *, Tong Wang2, *, Ying Shen2, *, Wentao Liu5, *   

  1. 1Department of Rehabilitation, Hengyang Medical School, The First Affiliated Hospital, University of South China, Hengyang, Hunan Province, China; 
    2Rehabilitation Medicine Center, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, Jiangsu Province, China;  3Department of Rehabilitation, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China;  4Department of Rehabilitation Medicine, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu Province, China;  5Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province, China
  • Online:2026-07-15 Published:2026-04-01
  • Contact: Liang Hu, PhD, lianghu@njmu.edu.cn; Tong Wang, MD, PhD, wangtong60621@163.com; Ying Shen, MD, PhD, shenying@njmu.edu.cn; Wentao Liu, PhD, painresearch@njmu.edu.cn.
  • Supported by:
    This study was supported by the National Natural Science Foundation of China, Nos. 82302877 (to QW), 82172541 (to TW); the Natural Science Foundation of Hunan Province, No. 2023JJ30549 (to QW); and the Clinical Medical Technology Innovation Guidance Project of Hunan Provincial Science and Technology Department, No. 2021SK51815 (to QW).

摘要:

目前治疗神经性疼痛的方法并不理想,仍需寻找更有效的治疗方法。作者既往研究表明,抑制脊髓中的神经炎症可发挥镇痛效应,且局部重复经脊髓磁刺激对脊髓损伤大鼠模型中显示出抗神经炎症作用。此次实验假设重复经脊髓磁刺激可能通过上调小胶质细胞CaMKKβ/AMPK/SOCS3信号来诱导抗炎作用以减轻神经性疼痛。为此,实验发现,非侵入性靶向脊髓的重复经脊磁刺激可有效缓解慢性坐骨神经结扎诱导的神经病理性疼痛大鼠机械性痛觉超敏并缓解脊髓神经炎症。进一步研究发现,重复经脊磁刺激通过上调脊髓小胶质细胞中SOCS3水平,随后抑制受控皮质冲击损伤模型诱导的p38和STAT3磷酸化以及核因子κB p65核转位,从而抑制神经炎症。而重复经脊磁刺激对SOCS3上调可能是通过小胶质细胞中CaMKKβ/AMPK信号通路的激活实现。结果提示,局部重复经脊磁刺激可通过激活脊髓小胶质细胞CaMKKβ/AMPK/SOCS3信号通路抑制脊髓神经炎症以缓解神经病理性疼痛。这为治疗脊髓损伤致神经性疼痛提供了一种有效的非侵入性治疗方法。


https://orcid.org/0000-0002-0013-7440 (Liang Hu); 

https://orcid.org/0000-0001-6516-4397 (Tong Wang); 

https://orcid.org/0000-0001-8308-9562 (Ying Shen);
https://orcid.org/0000-0001-8732-7927 (Wentao Liu)

关键词: 重复性经脊髓磁刺激, 神经性疼痛, CaMKKβ/AMPK/SOCS3信号传导, 神经炎症, 小胶质细胞, 慢性压迫性损伤, 核因子κB p65, STAT3, 机械性疼痛敏感性

Abstract: Current treatments for neuropathic pain are suboptimal, necessitating the search for more effective therapeutics. Our previous study showed that inhibition of neuroinflammation in the spinal cord induced analgesic effects, and focal repetitive trans-spinal magnetic stimulation showed an anti-neuroinflammatory effect in spinal cord injury rat models. Here, we speculated that repetitive trans-spinal magnetic stimulation might induce an anti-inflammatory effect to alleviate neuropathic pain by upregulating calmodulin-dependent protein kinase kinase beta (CaMKKβ)/adenosine 5′-monophosphate-activated protein kinase (AMPK)/suppressor of cytokine signaling-3 (SOCS3) signaling in microglia. Experiments have found that non-invasive focal repetitive trans-spinal magnetic stimulation effectively alleviates mechanical allodynia and spinal neuroinflammation in rats with neuropathic pain induced by chronic sciatic nerve ligation. Further research found that repetitive trans-spinal magnetic stimulation upregulated the expression of SOCS3 in spinal microglia, which subsequently inhibited the phosphorylation of p38 mitogen-activated protein kinase and signal transducer and activator of transcription 3 and nuclear factor-kappa B p65 nuclear translocation in rats with neuropathic pain, thereby suppressing neuroinflammation. The upregulation of SOCS3 by repetitive trans-spinal magnetic stimulation may be achieved through the activation of the CaMKKβ/AMPK signaling pathway in microglia. The results suggested that focal repetitive trans-spinal magnetic stimulation inhibits spinal neuroinflammation and alleviates neuropathic pain by activating the CaMKKβ/AMPK/SOCS3 signaling pathway in spinal microglia. This mechanism provides an effective noninvasive treatment for neuropathic pain caused by peripheral nerve injury. 
 

Key words: CaMKKβ/AMPK/SOCS3 signaling, chronic constriction injury, mechanical pain sensitivity, microglia, neuropathic pain, neuroinflammation, nuclear factor-κB p65, repetitive trans-spinal magnetic stimulation, STAT3