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维生素D改善了实验性自身免疫甲状腺炎中的NETosis和Th17/Treg不平衡
Hai-Yan Yang1, Xi-Zhen Wu2, Yu-Ping Liu1
1Department of Endocrinology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Immunology letters
|March 2, 2026
概括
中性粒细胞外细胞陷 (NETs) 在哈西莫托甲状腺炎 (HT) 中升高,导致免疫功能障碍. 维生素D (VD) 治疗抑制了NET的形成并恢复了免疫平衡,为HT提供了潜在的辅助治疗.
科学领域:
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
- 这是一种自身免疫力.
背景情况:
- 中性细胞外细胞陷 (NETs) 在自身免疫性疾病中越来越多地被识别出来.
- NETs在哈西莫托甲状腺炎 (HT) 中的特定作用及其治疗调制仍然不清楚.
研究的目的:
- 在实验性自身免疫甲状腺炎 (EAT) 和HT患者中研究NET形成.
- 探索NETs,甲状腺功能障碍和适应性免疫之间的联系.
- 通过针对NETs来评估维生素D (VD) 作为HT的潜在治疗方法.
主要方法:
- 在小鼠中诱导了EAT;以calcitriol的形式给予VD. 评估的是甲状腺组织病理学,MHC-II,自身抗体 (TGAb,TPOAb),DNase-I,1,25(OH) 2D3,NETs和T细胞子集 (Th17,Treg,Th1,Th2).这些是甲状腺细胞组学,MHC-II,自身抗体 (TGAb,TPOAb),DNase-I,1,25(OH) 2D3,NETs和T细胞子集 (Th17,Treg,Th1,Th2).
- 与之并行的研究使用了HT患者的中性粒细胞.
- 关键的免疫标志物和NETosis水平被量化.
主要成果:
- 在EAT小鼠和HT患者中观察到增强的NETosis.
- EAT小鼠的DNase-I,1,25(OH) 2D3,Treg和Th1细胞减少,Th17和Th2细胞增加,Th17/Treg比率升高,甲状腺MHC-II表达高.
- NETs与Th17,Th2和MHC-II正相关,与Treg,Th1,1,25(OH) 2D3和DNase-I.负相关. 静脉疾病的治疗减少了甲状腺炎,TPOAb,NETs,Th17/Treg比率和IL-17.
结论:
- NETs促进HT中的Th17偏差和MHC-II过度表达,影响适应性免疫力.
- 维生素D抑制NETosis,并重新平衡T细胞种群.
- 静脉疾病通过调节NET形成和免疫平衡,显示出作为HT辅助治疗的前景.
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