南方医科大学学报 ›› 2026, Vol. 46 ›› Issue (6): 1216-1227.doi: 10.12122/j.issn.1673-4254.2026.06.02

• • 上一篇    

清肾颗粒通过调控Akt3介导的M1型巨噬细胞极化改善单侧输尿管梗阻小鼠肾纤维化

王伟丽(), 高怡琳, 洪馨, 陈义珍, 程梦, 张磊, 戴荣(), 王亿平()   

  1. 安徽中医药大学第一附属医院肾内科,安徽 合肥 230031
  • 收稿日期:2025-12-02 出版日期:2026-06-20 发布日期:2026-06-24
  • 通讯作者: 戴荣,王亿平 E-mail:wang37937379@163.com;azydairong@163.com;wypwyp54@aliyun.com
  • 作者简介:王伟丽,博士,医师,E-mail: wang37937379@163.com
  • 基金资助:
    国家自然科学基金(82274307);安徽省自然科学基金项目(2308085MH292);安徽省自然科学基金项目(202407290785);安徽省卫生健康科研项目(AHWJ2024BAc20084);安徽省卫生健康科研项目(AHWJ2024Aa30409);安徽中医药大学临床科研项目(2024YFYLCZX28);合肥市科技局生命健康专项(GJ2022SM03);2023年度合肥综合性国家科学中心大健康研究院新安医学与中医药现代化研究所科研项目(2023CXMMTCM018);国家中医优势专科(国中医药医政函[2024]90号)

Qingshen Granules alleviate renal fibrosis in mice with unilateral ureteral obstruction by regulating Akt3-mediated M1 macrophage polarization

Weili WANG(), Yilin GAO, Xin HONG, Yizhen CHEN, Meng CHENG, Lei ZHANG, Rong DAI(), Yiping WANG()   

  1. Department of Nephrology, First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei 230031, China
  • Received:2025-12-02 Online:2026-06-20 Published:2026-06-24
  • Contact: Rong DAI, Yiping WANG E-mail:wang37937379@163.com;azydairong@163.com;wypwyp54@aliyun.com
  • Supported by:
    National Natural Science Foundation of China(82274307)

摘要:

目的 探究清肾颗粒抑制肾纤维化的作用机制,明确其是否通过调控 Akt3 介导的巨噬细胞极化发挥效应。 方法 体内构建单侧输尿管梗阻(UUO)小鼠肾纤维化模型,分为假手术组、模型组、清肾颗粒治疗组[4.0 g·kg-1·d-1)],6只/组,灌胃2周;通过 AAV9 介导肾脏Akt3 敲低,设置 Sham+NC、Sham+shAkt3、Model+NC、Model+shAkt3组;体外以TGF-β1 诱导 HK-2细胞纤维化,用清肾颗粒含药血清干预,同时构建HK-2细胞与THP-1来源巨噬细胞的共培养体系。采用 HE、Masson 染色观察肾脏病理变化;ELISA 检测血清肌酐(Scr)、尿素氮(BUN);Western blotting、RT-qPCR检测Akt3、α-SMA、E-cad、IL-6、TNF-α蛋白及 mRNA 表达;免疫组化、免疫荧光验证蛋白定位;流式细胞术检测巨噬细胞极化表型;CCK-8、EdU 实验评估细胞活力与增殖能力。 结果 体内实验表明,与假手术组相比,模型组小鼠肾功能显著受损,Scr、BUN水平升高(P<0.05),伴肾小管损伤、肾间质胶原纤维沉积,肾组织IL-6、TNF-α的mRNA及α-SMA蛋白表达上调, E-cad蛋白表达下调(P<0.05);与模型组相比,清肾颗粒治疗组上述指标均改善(P<0.05)。AAV9介导肾脏特异性Akt3敲低实验中,与Sham+NC组相比,Model+NC组小鼠肾纤维化加重,肾组织M1型巨噬细胞占比升高(P<0.05),M2型无显著变化(P>0.05);与Model+NC组相比,Model+ shAkt3敲低组肾纤维化减轻,M1型巨噬细胞极化受抑制(P<0.05),M2型仍无明显差异(P>0.05);清肾颗粒显著下调肾组织 Akt3 蛋白表达,降低 M1 型巨噬细胞比例(P<0.05)。体外实验中,与对照组相比,模型组细胞活力、增殖能力下降,Akt3、α-SMA蛋白上调,E-cad蛋白下调,清肾颗粒含药血清组可逆转上述变化(P<0.05);流式细胞术检测显示,TGF-β1诱导的HK-2细胞可促进M0巨噬细胞向M1型极化,清肾颗粒含药血清干预后M1型极化被抑制(P<0.05)。 结论 清肾颗粒通过抑制Akt3介导的M1型巨噬细胞极化,发挥减轻UUO小鼠肾纤维化的作用。

关键词: 清肾颗粒, Akt3, 巨噬细胞极化, 肾纤维化

Abstract:

Objective To clarify whether Qingshen Granules (QSG) inhibits renal fibrosis by regulating Akt3-mediated macrophage polarization. Methods Adult C57BL/6 mice were randomized into Sham group, unilateral ureteral obstruction (UUO) model group, and UUO with QSG treatment group (n=6) for treatment with daily gavage of distilled water or QSG (4.0 g/kg) as indicated for 2 weeks. In AAV9 experiments, the mice received intrarenal injections of AAV9-shRNA(Akt3)-GFP for Akt3 knockdown or AAV9-shRNA-GFP (negative control) 2 weeks before sham operation or UUO modeling. After the treatments, the mice were examined for renal fibrosis, renal function, and macrophage polarization using HE staining, Masson staining, ELISA, Western blotting, RT-qPCR, immunohistochemistry, immunofluorescence staining, and flow cytometry. In the cell experiment, TGF‑β1-induced HK-2 cells were co-cultured with THP-1-derived macrophages, and the effects of QSG-medicated rat serum on cell viability, proliferation, and macrophage polarization were evaluated using CCK-8 and EdU assays, Western blotting and flow cytometry. Results Compared with the sham-operated mice, the UUO mice showed impaired renal function, renal tubular injury, collagen deposition, upregulated expressions of IL-6 and TNF-α mRNA and α-SMA protein, and downregulated E-cad protein expression, which were significantly improved by QSG treatment. In AAV9 experiments, the UUO mice with control virus injection showed obvious renal fibrosis and increased M1 macrophages, while AAV9-shRNA(Akt3)‑GFP injection significantly alleviated renal fibrosis and inhibited M1 macrophage polarization without affecting M2 macrophages. In the co-cultured cells, treatment with QSG-medicated serum significantly reversed TGF-β1-induced reduction of HK-2 cell viability and proliferation, upregulated Akt3 and α‑SMA expressions, downregulated E-cad expression, and inhibited M0-to-M1 polarization of THP-1 cells induced by TGF‑β1-treated HK-2 cells. Conclusion QSG alleviates renal fibrosis in UUO mice by inhibiting Akt3-mediated M1 macrophage polarization.

Key words: Qingshen Granules, Akt3, macrophage polarization, renal fibrosis