南方医科大学学报 ›› 2025, Vol. 45 ›› Issue (11): 2297-2308.doi: 10.12122/j.issn.1673-4254.2025.11.02

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芪黄健脾滋肾颗粒通过AIM2/Blimp-1/Bcl-6轴抑制B细胞分化改善MRL/lpr小鼠肾损害

程丽丽1(), 汤忠富1, 李明1,2, 陈君洁3, 尚双双1, 刘思娣1, 黄传兵1,2()   

  1. 1.安徽中医药大学第一附属医院风湿科,安徽 合肥 230012
    2.新安医学与中医药现代化研究所,安徽 合肥 230031
    3.安徽中医药大学中医学院,安徽 合肥 230031
  • 收稿日期:2025-06-13 出版日期:2025-11-20 发布日期:2025-11-28
  • 通讯作者: 黄传兵 E-mail:3265544980@qq.com;chuanbinh@163.com
  • 作者简介:程丽丽,在读博士研究生,医师,E-mail: 3265544980@qq.com
  • 基金资助:
    国家自然科学基金(82574970);安徽省临床医学研究转化专项项目(202304295107020114);安徽省临床医学研究转化专项项目(202304295107020115);大健康研究院新安医学与中医药现代化研究所专项(2023CXMMTCM015);大健康研究院新安医学与中医药现代化研究所专项(2023CXMMTCM004);安徽省研究生质量工程研究生创新创业实践项目(2024cxcysj121);安徽省高等学校科学重点研究项目(2024AH050957)

Qihuang Jianpi Zishen Granules improves renal damage in MRL/lpr mice by inhibiting B cell differentiation via the AIM2/Blimp-1/Bcl-6 axis

Lili CHENG1(), Zhongfu TANG1, Ming LI1,2, Junjie CHEN3, Shuangshuang SHANG1, Sidi LIU1, Chuanbing HUANG1,2()   

  1. 1.Department of Rheumatology, First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei 230012, China
    2.Institute of Xin'an Medicine and Modernization of Traditional Chinese Medicine, Hefei 230031, China
    3.School of Traditional Chinese Medicine, Anhui University of Chinese Medicine, Hefei 230031, China
  • Received:2025-06-13 Online:2025-11-20 Published:2025-11-28
  • Contact: Chuanbing HUANG E-mail:3265544980@qq.com;chuanbinh@163.com
  • Supported by:
    National Natural Science Foundation of China(82574970)

摘要:

目的 分析芪黄健脾滋肾颗粒(QJZ)抑制MRL/lpr 小鼠肾B细胞分化的疗效并探讨其潜在机制。 方法 30只8周龄雌性MRL/lpr小鼠随机分为5组:模型组、QJZ组、泼尼松(Pred)组、QJZ+Pred组、黑素瘤缺乏因子2(AIM2)抑制剂组,6只/组,8周龄雌性C57BL/6小鼠为正常组,各组按相应方法连续处理8周。采用生化仪检测尿液尿总蛋白/尿肌酐(TPCR)、尿白蛋白/尿肌酐(ACR)及血清中肌酐(Scr)、尿素氮(BUN)水平;组织病理学染色(HE、Masson、过碘酸-雪夫)观察小鼠肾脏病理结构的变化;电镜观察肾脏超微结构变化;酶联免疫吸附测定抗dsDNA、细胞因子、趋化因子的变化;免疫组化观察肾脏中补体C3、C4沉积情况;免疫荧光观察肾脏中AIM2、CD19、CD27、CD138表达情况;流式细胞术分析脾脏 B 淋巴细胞亚群的变化,Western blotting检测B淋巴细胞诱导成熟蛋白1(Blimp-1)/B细胞淋巴瘤6蛋白(Bcl-6)信号轴的影响。 结果 QJZ改善了MRL/lpr小鼠的Cr、BUN、TPCR、ACR水平(P<0.05),并改善肾脏的病理变化,降低抗双链DNA抗体(ds-DNA)、B细胞活化因子(BAFF)、白细胞介素(IL)-21、CXC 趋化因子受体(CXCR)-12、CXCR-19、C3、C4表达,提高IL-10水平(P<0.05);Western blotting结果显示QJZ降低B细胞关键转录蛋白Blimp-1、X-box结合蛋白1(XBP-1)的表达,升高Bcl-6、配对盒5(PAX5)的表达(P<0.05);流式细胞术结果显示QJZ影响B细胞的分化,免疫荧光结果显示QJZ 可降低AIM2、CD27、CD138、CD69的表达。AIM2抑制可降低B细胞关键转录蛋白Blimp-1、XBP-1的表达,升高Bcl-6、PAX5的表达(P<0.05),抑制B细胞的分化,减少IgG生成,减少C3、C4的沉积,改善肾脏的病理变化。 结论 QJZ可能通过抑制AIM2/Blimp-1/Bcl-6信号通路影响B细胞分化抑制系统性红斑狼疮肾损害。

关键词: 芪黄健脾滋肾颗粒, 系统性红斑狼疮, 肾损害, B细胞, AIM2/Blimp-1/Bcl-6

Abstract:

Objective To investigate the efficacy of Qihuang Jianpi Zishen Granules (QJZ) for inhibiting renal B cell differentiation in MRL/lpr mice and explore its underlying mechanism. Methods Thirty 8-week-old female MRL/lpr mice were randomly divided into model group, QJZ group, prednisone (Pred) group, QJZ+Pred group, and AIM2 inhibitor group (n=6), with 6 8-week-old female C57BL/6 mice as the normal control group. After treatments with normal saline, QJZ, Pred, or AIM2 inhibitor for 8 weeks, the mice were examined for urinary total protein-to-creatinine ratio (TPCR) and albumin-to-creatinine ratio (ACR), serum creatinine (Cr) and blood urea nitrogen (BUN) levels, and renal histopathology (with HE, Masson, and PAS staining) and ultrastructural changes (with electron microscopy). ELISA, immunohistochemistry, immunofluorescence staining and flow cytometry were used to detect blood levels of anti-dsDNA antibodies, cytokines and chemokines, renal deposition of complement components C3 and C4, renal expressions of AIM2, CD19, CD27 and CD138, and changes in splenic B lymphocyte subsets. The effect of QJZ on the AIM2/Blimp-1/Bcl-6 signaling axis was examined using Western blotting. Results QJZ treatment significantly improved Cr, BUN, TPCR and ACR in MRL/lpr mice, ameliorated renal pathologies, reduced the expressions of ds-DNA, BAFF, IL-21, CXCL12, CXCL13, C3 and C4, and increased IL-10 levels. QJZ significantly downregulated renal expressions of the key B-cell transcription factors Blimp-1 and XBP-1, upregulated Bcl-6 and PAX5 expressions, inhibited B-cell differentiation, and lowered the expressions of AIM2, CD27, CD138 and CD69. Inhibition of AIM2 similarly reduced renal Blimp-1 and XBP-1 expressions, increased Bcl-6 and PAX5 levels, suppressed B-cell differentiation, decreased IgG production, reduced C3 and C4 deposition, and alleviated renal pathology in MRL/lpr mice. Conclusion QJZ inhibits B cell differentiation and alleviates renal damage in systemic lupus erythematosus possibly by suppressing the AIM2/Blimp-1/Bcl-6 signaling pathway.

Key words: Qihuang Jianpi Zishen Granules, systemic lupus erythematosus, renal damage, B cells, AIM2/Blimp-1/Bcl-6