南方医科大学学报 ›› 2026, Vol. 46 ›› Issue (9): 2078-2090.doi: 10.12122/j.issn.1673-4254.2026.09.08

• • 上一篇    

苗药“四大血”通过抑制HIF-1α/PDK1介导的糖酵解重编程调控巨噬细胞极化并缓解胶原诱导型关节炎大鼠滑膜炎症

沈婉婷1(), 陈一哲1(), 付欣予1, 袁家涛1, 周均1, 黄丽2(), 吴宁2()   

  1. 1.贵州医科大学,临床医学院,贵州 贵阳 561113
    2.贵州医科大学,基础医学实验教学中心,贵州 贵阳 561113
  • 收稿日期:2026-01-09 出版日期:2026-09-20 发布日期:2026-09-30
  • 通讯作者: 黄丽,吴宁 E-mail:1527214678@qq.com;2322045095@qq.com;12155501@qq.com;1638210715@qq.com
  • 作者简介:沈婉婷,在读本科生,E-mail: 1527214678@qq.com
    陈一哲,在读本科生,E-mail: 2322045095@qq.com
    第一联系人:(沈婉婷、陈一哲并列第一作者)
  • 基金资助:
    国家自然科学基金(82260829);2024年国家级大学生创新创业计划训练项目(2024106600520)

Miao medicine Sidaxue regulates macrophage polarization and alleviates synovial inflammation in collagen-induced arthritis rats by inhibiting HIF-1α/PDK1-mediated glycolytic reprogramming

Wanting SHEN1(), Yizhe CHEN1(), Xinyu FU1, Jiatao YUAN1, Jun ZHOU1, Li HUANG2(), Ning WU2()   

  1. 1.Clinical Medical College, Guizhou Medical University, Guiyang 561113, China
    2.Basic Medical Experimental Teaching Center, Guizhou Medical University, Guiyang 561113, China
  • Received:2026-01-09 Online:2026-09-20 Published:2026-09-30
  • Contact: Li HUANG, Ning WU E-mail:1527214678@qq.com;2322045095@qq.com;12155501@qq.com;1638210715@qq.com
  • Supported by:
    National Natural Science Foundation of China(82260829)

摘要:

目的 探究贵州苗医验方“四大血”(SX)对胶原诱导型关节炎(CIA)大鼠滑膜组织糖酵解和巨噬细胞极化的作用机制。 方法 将32只SD大鼠随机均分为空白组、模型组、雷公藤多苷片阳性对照组(GTW 40 mg/kg)、SX组(SX 40 g/kg),8只/组。除空白组外,其余组别均构建CIA大鼠模型。造模成功后,灌胃给药21 d,其中空白组与模型组灌胃生理盐水。检测大鼠足肿度、关节炎指数(AI),HE染色观察滑膜组织病理变化,免疫荧光染色检测滑膜组织诱导型一氧化氮合酶(iNOS)、甘露糖受体(CD206)表达,ELISA法检测血清肿瘤坏死因子-α(TNF-α)、白细胞介素-1β(IL-1β)、白细胞介素-6(IL-6)水平,分光光度法检测滑膜组织乳酸含量,Western blotting与实时荧光定量PCR法检测缺氧诱导因子-1α(HIF-1α)、丙酮酸脱氢酶激酶同工酶1(PDK1)、己糖激酶2(HK2)的蛋白及mRNA表达。采用UHPLC-MS鉴定SX入血成分并预测靶点,通过差异分析和WGCNA鉴定类风湿关节炎(RA)相关基因,经Venn交集分析锁定候选靶点,再通过多种机器学习算法筛选关键枢纽基因。利用AlphaFold3预测HIF-1α与PDK1的互作结构,对关键基因进行虚拟敲除,使用分子对接探究靶点与入血成分的互作关系。 结果 动物实验中,与模型组相比,SX能显著减轻CIA大鼠关节肿胀度和AI评分(P<0.01);改善滑膜增生与炎性细胞浸润;降低血清 TNF-α、IL-1β、IL-6 含量(P<0.05);下调iNOS表达、上调CD206 表达,抑制巨噬细胞M1型极化;同时显著下调滑膜组织中HIF-1α、PDK1、HK2的蛋白及mRNA表达水平(P<0.01);鉴定出29种SX入血活性成分、756个潜在靶点及908个RA核心相关基因,经交集分析获得38个候选靶点,机器学习筛选出9个关键基因。AlphaFold3 预测显示HIF-1α与PDK1存在强互作关系,虚拟敲除分析表明,敲除HIF1A和PDK1可显著扰动巨噬细胞中TNF、NF-κB等炎症信号通路,分子对接显示互作较强。 结论 本研究通过全方动物实验和入血成分预测分析验证了苗药“四大血”可通过抑制HIF-1α/PDK1信号通路,纠正糖酵解重编程,进而促进巨噬细胞M2型极化,有效缓解CIA大鼠关节炎症。

关键词: 类风湿关节炎, 四大血, HIF-1α/PDK1通路, 糖酵解重编程, 巨噬细胞极化

Abstract:

Objective To investigate the mechanism of Miao medicine prescription Sidaxue (SX) for inhibiting glycolysis in the synovial tissue and promoting macrophage polarization in rats with collagen-induced arthritis (CIA). Methods Thirty-two SD rats were randomized into normal control group, CIA model group, tripterygium glycosides (40 mg/kg; positive control) treatment group, and SX (40 g/kg) treatment group (n=8). Except for those in the normal control group, all the rats were subjected to CIA modeling and treated with saline, tripterygium glycosides or SX by gavage for 21 consecutive days. Paw swelling, arthritis index, synovial pathology, inflammatory factors, glycolysis-related indicators and gene expressions were detected. UHPLC-MS was used to screen the components of SX in the blood of SX-treated rats. The target genes of the active components of SX and rheumatoid arthritis (RA) were predicted using bioinformatics analysis, and the hub genes were identified using machine learning algorithms. The binding sites between HIF-1α and PDK1 were predicted using AlphaFold3, and the interactions between SX components and their targets were simulated using molecular docking. Results SX treatment significantly alleviated joint swelling, lowered arthritis scores, improved synovial lesions, and reduced serum levels of TNF-α, IL-1β and IL-6 in CIA rats, resulting in also inhibition of macrophage polarization and down-regulation of HIF-1α, PDK1 and HK2 expressions in the synovial tissues. Twenty-nine components of SX were detected in the blood of SX-treated rats, and 9 key target genes were identified. AlphaFold3 predicted a strong interaction between HIF-1α and PDK1, and their virtual knockout was shown to disturb the inflammatory pathways in the macrophages. Molecular docking studies suggested stable docking between the active components of SX and their key targets. Conclusion SX alleviates joint inflammation in CIA rats by inhibiting the HIF-1α/PDK1 signaling pathway, correcting glycolytic reprogramming, and promoting M2 polarization of macrophages.

Key words: rheumatoid arthritis, Sidaxue, HIF-1α/PDK1 pathway, glycolytic reprogramming, macrophage polarization