中国神经再生研究(英文版) ›› 2026, Vol. 21 ›› Issue (3): 1222-1235.doi: 10.4103/NRR.NRR-D-24-00302

• 原著:周围神经损伤修复保护与再生 • 上一篇    下一篇

猪脱细胞神经基质水凝胶减轻周围神经损伤后神经炎症

  

  • 出版日期:2026-03-15 发布日期:2025-07-05

Porcine decellularized nerve matrix hydrogel attenuates neuroinflammation after peripheral nerve injury by inhibiting the TLR4/MyD88/NF-κB axis

Rui Li1, 2, Jianquan Liu1 , Liuxun Li1 , Guotian Luo1 , Xinrong Yuan1 , Shichao Shen1 , Yongpeng Shi1 , Jianlong Wu1 , Bin Yan1, *, Lei Yang1, *   

  1. 1 Orthopaedics/Department of Spine Surgery, Department of Pharmacy, Shenzhen Second People’s Hospital (the First Affiliated Hospital, Shenzhen University), Medical Innovation Technology Transformation Center of Shenzhen Second People’s Hospital, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, Guangdong Province, China;  2 State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, Guangdong Province, China
  • Online:2026-03-15 Published:2025-07-05
  • Contact: Bin Yan, MD, yanbinzhiyou@163.com; Lei Yang, MD, yangl@email.szu.edu.cn.
  • Supported by:
    This study was supported by the Shenzhen Hong Kong Joint Funding Project, No. SGDX20230116093645007 (to LY); the Shenzhen Science and Technology Innovation Committee International Cooperation Project, No. GJHZ20200731095608025 (to LY); Shenzhen Development and Reform Commission’s Intelligent Diagnosis, Treatment and Prevention of Adolescent Spinal Health Public Service Platform, No. S2002Q84500835 (to LY); Shenzhen Medical Research Fund, No. B2303005 (to LY); Team-based Medical Science Research Program, No. 2024YZZ02 (to LY); Zhejiang Provincial Natural Science Foundation of China, No. LWQ20H170001 (to RL); Basic Research Project of Shenzhen Science and Technology from Shenzhen Science and Technology Innovation Commission, No. JCYJ20210324103010029 (to BY); Shenzhen Second People’s Hospital Clinical Research Fund of Guangdong Province High-level Hospital Construction Project, Nos. 2023yjlcyj029 (to BY), 2023yjlcyj021 (to LL); Guangdong Basic and Applied Basic Research Foundation, No. 2022A1515110679 (to LL); and China Postdoctoral Science Foundation, No. 2022M722203 (to GL).

摘要:

周围神经损伤(PNI)会引起严重的神经炎症。在以往的研究中,猪脱细胞神经基质水凝胶(pDNM-gel)因其优异的生物特性和组织特异性,已被证明是一种有希望减轻严重周围神经损伤的生物医学材料;然而,它对周围神经损伤后调节神经炎症的作用仍然未知。实验试图确定 pDNM 凝胶是否对周围神经损伤具有抗炎特性,并揭示这种作用的潜在分子机制。体内实验评估了 PNI 大鼠接受 pDNM 凝胶治疗后神经功能恢复、巨噬细胞表型改变、特定细胞因子表达以及相关信号分子的变化。体外实验通过在含有 LPS 的完全培养基中培养单核细胞/巨噬细胞系,并添加/不添加 pDNM 凝胶,评估了类似的研究内容。结果发现 pDNM 凝胶可减轻 PNI 早期的过度炎症激活,并提高了单核细胞和巨噬细胞中 M2 亚型的比例。此外,pDNM-凝胶还能在体内和体外负向调节Toll样受体4(TLR4)/髓系分化因子88(MyD88)/核因子-κB(NF-κB)轴。这些结果表明,pDNM-凝胶可通过抑制TLR4/MyD88/NF-κB途径诱导M2巨噬细胞极化,起到抗炎作用,这为了解猪脱细胞神经基质水凝胶治疗PNI的原因提供了新见解。

https://orcid.org/0009-0007-9416-1583 (Bin Yan); https://orcid.org/0000-0002-8811-607X (Lei Yang)

关键词: 猪脱细胞神经基质水凝胶(pDNM-gel), 周围神经损伤(PNI), 抗炎反应, 巨噬细胞极化, 神经炎症

Abstract: Peripheral nerve injury causes severe neuroinflammation and has become a global medical challenge. Previous research has demonstrated that porcine decellularized nerve matrix hydrogel exhibits excellent biological properties and tissue specificity, highlighting its potential as a biomedical material for the repair of severe peripheral nerve injury; however, its role in modulating neuroinflammation post–peripheral nerve injury remains unknown. Here, we aimed to characterize the anti-inflammatory properties of porcine decellularized nerve matrix hydrogel and their underlying molecular mechanisms. Using peripheral nerve injury model rats treated with porcine decellularized nerve matrix hydrogel, we evaluated structural and functional recovery, macrophage phenotype alteration, specific cytokine expression, and changes in related signaling molecules in vivo. Similar parameters were evaluated in vitro using monocyte/ macrophage cell lines stimulated with lipopolysaccharide and cultured on porcine decellularized nerve matrix hydrogel–coated plates in complete medium. These comprehensive analyses revealed that porcine decellularized nerve matrix hydrogel attenuated the activation of excessive inflammation at the early stage of peripheral nerve injury and increased the proportion of the M2 subtype in monocytes/macrophages. Additionally, porcine decellularized nerve matrix hydrogel negatively regulated the Toll-like receptor 4/myeloid differentiation factor 88/nuclear factor-κB axis both in vivo and in vitro. Our findings suggest that the efficacious anti-inflammatory properties of porcine decellularized nerve matrix hydrogel induce M2 macrophage polarization via suppression of the Toll-like receptor 4/myeloid differentiation factor 88/nuclear factor-κB pathway, providing new insights into the therapeutic mechanism of porcine decellularized nerve matrix hydrogel in peripheral nerve injury.

Key words: anti-inflammatory reaction, macrophage polarization, neuroinflammation, peripheral nerve injury, porcine decellularized nerve matrix hydrogel