上海交通大学学报(医学版) ›› 2026, Vol. 46 ›› Issue (6): 721-731.doi: 10.3969/j.issn.1674-8115.2026.06.004

• 论著 · 基础研究 • 上一篇    

防己诺林碱通过调节T淋巴细胞亚群治疗干燥综合征的机制研究

钮疏桐, 石欢, 俞创奇()   

  1. 上海交通大学医学院附属第九人民医院口腔外科,上海交通大学口腔医学院,国家口腔医学中心,口腔疾病国家临床医学研究中心,上海市口腔医学重点实验室,上海市口腔医学研究所,上海 200011
  • 收稿日期:2025-11-21 接受日期:2026-03-10 出版日期:2026-06-28 发布日期:2026-06-29
  • 通讯作者: 俞创奇,主任医师,博士;电子信箱:yuchuangqi2017@163.com
  • 基金资助:
    国家自然科学基金(82174041);上海交通大学医学院附属第九人民医院生物样本库项目(YBKB202212)

Study on the effects of fangchinoline in regulating T lymphocyte subsets in an animal model of Sjogren's syndrome

Niu Shutong, Shi Huan, Yu Chuangqi()   

  1. Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai 200011, China
  • Received:2025-11-21 Accepted:2026-03-10 Online:2026-06-28 Published:2026-06-29
  • Contact: Yu Chuangqi, E-mail: yuchuangqi2017@163.com.
  • Supported by:
    National Natural Science Foundation of China(82174041);Biobank Project of Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine(YBKB202212)

摘要:

目的·阐明防己诺林碱(fangchinoline,FAN)对Nod/LtJ小鼠干燥综合征的疗效,对T细胞亚群的调控作用及潜在分子靶点。方法·将小鼠分为健康对照组、疾病组、羟氯喹治疗组、FAN治疗组。羟氯喹治疗组隔天灌胃给药,FAN治疗组隔日腹腔注射,均给药4周。给药后第5周检测体质量、唾液流率、下颌下腺指数、脾脏指数。用酶联免疫吸附试验(enzyme-linked immunosorbent assay,ELISA)检测外周血抗Ro/SSA抗体、抗La/SSB抗体及免疫球蛋白G(immunoglobulin G,IgG)抗体水平,苏木精-伊红(hematoxylin-eosin,H-E)染色观察下颌下腺淋巴细胞浸润情况,流式细胞术分析脾脏T淋巴细胞亚群分布情况。通过靶点垂钓、PAGE富集、质谱检测寻找FAN的潜在作用靶点,分子模拟对接分析结合能及预测结合位点。结果·接受FAN给药治疗后,Nod/LtJ小鼠唾液流率降低症状得到改善(P=0.046),下颌下腺内淋巴细胞灶性浸润情况显著改善(P=0.044),外周血抗Ro/SSA抗体水平显著降低(P=0.041)。流式细胞术结果提示FAN改变了小鼠脾脏中T淋巴细胞亚群分布,辅助性T细胞1(T helper cell 1,Th1细胞)(P=0.014)、Th17细胞(P=0.011)、滤泡辅助性T细胞(follicular helper T cell,Tfh细胞)(P=0.002)、Th2细胞(P=0.018)分布减少,调节性T细胞(regulatory T cell,Treg细胞)分布增加(P=0.014)。同时,靶点垂钓及质谱鉴定结果均指向丙酮酸激酶M2型(pyruvate kinase M2,PKM2)是FAN的潜在靶点,分子模拟对接提示FAN与PKM2具有稳定的相互作用。结论·FAN可有效缓解Nod/LtJ小鼠的干燥综合征症状,其作用可能与其对特定的T细胞亚群分布的调控相关,FAN可能通过靶向PKM2发挥作用。

关键词: 干燥综合征, 防己诺林碱, T淋巴细胞, Nod/LtJ小鼠, 丙酮酸激酶M2型

Abstract:

Objective ·To elucidate the therapeutic effects of fangchinoline (FAN) on Sjogren's syndrome in Nod/LtJ mice, its regulatory effects on T cell subsets, and its potential molecular targets. Methods ·The mice were divided into four groups: control group, disease group, hydroxychloroquine (HCQ)-treated group, and FAN-treated group. The HCQ-treated group received oral gavage every other day, and the FAN-treated group received intraperitoneal injections every other day, both for 4 weeks. Body weight, salivary flow rate, submandibular gland index, and splenic index were measured in the fifth week. Levels of anti-Ro/SSA, anti-La/SSB, and immunoglobulin G (IgG) antibodies in the peripheral blood were detected by enzyme-linked immunosorbent assay (ELISA). Lymphocyte infiltration in the submandibular glands was assessed by hematoxylin-eosin (HE) staining. The distribution of splenic T lymphocyte subsets was analyzed by flow cytometry. Potential targets of FAN were identified by target fishing, PAGE enrichment, and mass spectrometry. Molecular docking was performed to analyze binding affinity and predict binding sites. Results ·FAN treatment significantly improved salivary flow reduction in Nod/LtJ mice (P=0.046) and markedly alleviated lymphocyte infiltration in the submandibular glands (P=0.044). The levels of anti-Ro/SSA antibodies in peripheral blood were significantly reduced (P=0.041). Flow cytometry results indicated that FAN altered the distribution of splenic T lymphocyte subsets. T helper 1 (Th1) (P=0.014), T helper 17 (Th17) (P=0.011), T follicular helper (Tfh) (P=0.002), and T helper 2 (Th2) (P=0.018) cells were decreased, and regulatory T cells (Treg) (P=0.014) were increased. Furthermore, target fishing coupled with mass spectrometry identified pyruvate kinase M2 (PKM2) as a potential target for FAN. Molecular docking simulations indicated a stable interaction between FAN and PKM2. Conclusion ·FAN exerts discernible therapeutic effects on Sjogren's syndrome symptoms in Nod/LtJ mice. These effects are associated with modulation of T lymphocyte subset distribution and may be mediated through PKM2. These findings highlight the promising therapeutic potential of FAN in managing Sjogren's syndrome.

Key words: Sjogren's syndrome, fangchinoline (FAN), T lymphocytes, Nod/LtJ mice, pyruvate kinase M2 (PKM2)

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