口腔医学研究 ›› 2025, Vol. 41 ›› Issue (8): 700-706.DOI: 10.13701/j.cnki.kqyxyj.2025.08.011

• 口腔黏膜病学研究 • 上一篇    下一篇

芍药苷促β-防御素表达在念珠菌性口炎中的作用及机制研究

肖丽君1, 潘燕1, 杨建堂2*   

  1. 1.滨州医学院附属烟台口腔医院黏膜科 山东 烟台 264000;
    2.遵义医科大学附属口腔医院黏膜科 贵州 遵义 563006
  • 收稿日期:2024-11-29 出版日期:2025-08-28 发布日期:2025-08-15
  • 通讯作者: *杨建堂,E-mail:945810934@qq.com
  • 作者简介:肖丽君(1996~ ),女,山东威海人,硕士,住院医师,研究方向:口腔黏膜病学。
  • 基金资助:
    国家自然科学基金(编号:81960202); 贵州省科技厅项目(黔科合基础-ZK[2023]一般534); 滨州医学院“口腔医学+X”院校融合创新项目(编号:KQRH2024MS006)

Role and Mechanism of Paeoniflorin Promoting β-Defensin Expression in Candidal Stomatitis

XIAO Lijun1, PAN Yan1, YANG Jiantang2*   

  1. 1. Department of Oral Mucosa, the Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Yantai 264000, China;
    2. Department of Oral Mucosa, the Affiliated Stomatological Hospital, Zunyi Medical University, Zunyi 563006, China
  • Received:2024-11-29 Online:2025-08-28 Published:2025-08-15

摘要: 目的: 探讨芍药苷(paeoniflorin, PF)促进β-防御素表达在念珠菌性口炎中的作用及机制。方法: 采用不同浓度PF处理Leuk-1细胞24、48、72 h,CCK-8试剂盒(cell counting kit-8,CCK-8)法检测细胞活力,筛选后续实验PF浓度与作用时间;建立白色念珠菌(Candida albcians,C.a)感染口腔黏膜上皮细胞系Leuk-1的念珠菌性口炎体外模型,检测PF的抗菌能力;实时荧光定量PCR(quantitative reverse transcription polymerase chain reaction,RT-qPCR)、酶联免疫吸附实验(enzyme-linked immunosorbent assays,ELISA)检测PF处理口腔黏膜上皮细胞后β-防御素(human β-defensin, HBD-1、HBD-2、HBD-3)基因和蛋白的表达水平;Western blot检测核因子-κB(NF-κB)信号通路中磷酸化P65蛋白活化情况。结果: CCK-8结果显示,5 μmol/L、10 μmol/L为PF作用Leuk-1细胞的最佳浓度,可明显降低细胞模型中C.a的黏附率(P<0.05)。PF能够诱导Leuk-1中HBD-1、HBD-2、HBD-3基因和蛋白的表达,与空白组比较差异均有统计学意义(P<0.01),且C.a的生存率显著下降。PF作用细胞后,p-P65/P65蛋白相对表达量升高,阻断P65-NF-κB信号通路后,HBDs的基因、蛋白表达量明显降低(P<0.05),同时C.a的生存率显著下降(P<0.0001)。结论: PF可通过激活P65-NF-κB通路蛋白,有效诱导Leuk-1细胞合成分泌β-防御素,进而抑制C.a菌丝生长、控制C.a的感染与侵袭,为PF防治念珠菌性口炎和口腔黏膜疾病提供依据。

关键词: 芍药苷, 念珠菌性口炎, β-防御素

Abstract: Objective: To study the role and mechanism of paeoniflorin (PF) promoting β-defensin expression in candidal stomatitis. Methods: The model of candida albicans (C.a) infected Leuk-1 cells to detect the antibacterial ability of β-defensin was established. Quantitative reverse transcription polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbentAssays (ELISA) were used to detect the gene and protein expression level of β-defensin (HBD-1, HBD- 2, HBD-3). The expressions of phosphorylated P65 in NF-κB signaling pathway were detected by Western blot. Results: CCK-8 results showed that PF at the concentration of 5 μmol/L and 10 μmol/L was selected to treat Leuk-1 cells for 24 h for subsequent experiments which could significantly inhibit the adhesion rate of C.a to Leuk-1 (P<0.05). RT-qPCR and ELISA results showed that 5 μmol/L and 10 μmol/L concentrations of PF could induce Leuk-1 to express HBD-1, -2, and -3, which were statistically significant compared with the blank control group (P<0.01), and the survival rate of C.a under the action of PF decreased significantly. The expression of p-P65 protein was increased by PF. Under the action of inhibitors, the expression of HBD-1, -2, and -3 genes and proteins decreased significantly, the survival rate of C.a increased significantly (P<0.0001). Conclusion: PF induces Leuk-1 cells to secrete and express β-defensins and mucoprotein 1 mainly via P65-NF-κB signal pathway, which could inhibit the growth and control the infection and invasion of C.a, which provided a basis for PF to prevent and treat candida stomatitis and other oral mucosal disease.

Key words: paeoniflorin, candidal stomatitis, β-defensin