南方医科大学学报 ›› 2026, Vol. 46 ›› Issue (3): 582-591.doi: 10.12122/j.issn.1673-4254.2026.03.12

• 基础研究 • 上一篇    

清肾颗粒通过调控糖酵解重编程及组蛋白 H3K18 乳酸化减轻小鼠肾纤维化

陈义珍(), 王伟丽, 程梦, 张威, 高怡琳, 洪馨, 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:2025-08-04 出版日期:2026-03-20 发布日期:2026-03-26
  • 通讯作者: 戴荣,王亿平 E-mail:chenyizhen1996@126.com;azydairong@163.com;wypwyp54@aliyun.com
  • 作者简介:陈义珍,博士,医师,E-mail: chenyizhen1996@126.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 inhibits renal fibrosis in mice by regulating glycolytic reprogramming and H3K18 lactylation

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

  1. Department of Nephrology, First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei 230031, China
  • Received:2025-08-04 Online:2026-03-20 Published:2026-03-26
  • Contact: Rong DAI, Yiping WANG E-mail:chenyizhen1996@126.com;azydairong@163.com;wypwyp54@aliyun.com
  • Supported by:
    National Natural Science Foundation of China(82274307)

摘要:

目的 探讨清肾颗粒对叶酸诱导的肾纤维化小鼠模型及转化生长因子-β1(TGF-β1)诱导的HK-2细胞的作用及其调控糖酵解重编程、乳酸累积和组蛋白 H3K18 乳酸化的机制。 方法 构建叶酸诱导的肾纤维化小鼠模型,分为正常组、模型组和清肾颗粒组(4.0 g·kg-1·d-1),6只/组,灌胃4周。HE 和 Masson 染色观察肾组织病理;Western blotting检测肾组织纤维化标志(α-SMA、FN、E-cad)、糖酵解关键蛋白(HIF-1α、HK2、PFKM、PKM2、LDHA)及组蛋白乳酸化相关蛋白(Pan Kla、H3/H4 乳酸化位点)表达;免疫荧光检测 α-SMA、FN、E-cad、LDHA、H3K18la表达;ELISA检测血清肌酐(SCR)、尿素氮(BUN);比色法检测肾组织乳酸含量。细胞实验:构建TGF-β1刺激下的HK-2细胞模型,SD大鼠灌胃制备清肾颗粒含药血清用于细胞实验,分为正常组、模型组和清肾颗粒含药血清组。CCK-8测细胞活力,EdU染色检测增殖;Western blotting检测细胞内 α-SMA、E-cad、LDHA、H3K18la表达;Seahorse XFe96 检测细胞外氧耗率 (OCR)和细胞外酸化率(ECAR);比色法检测细胞内乳酸含量。 结果 肾脏病理检查提示,与模型组相比,清肾颗粒可以明显减轻小鼠肾组织纤维化(P<0.05)。与模型组相比,清肾颗粒组小鼠肾组织中α-SMA、FN、HIF-1α、HK2、PFKM、PKM2、LDHA、Pan Kla、H3K18la 表达均显著减少,E-cad 表达显著增加(P<0.05)。与模型组相比,清肾颗粒组肾组织内 α-SMA、FN、LDHA 表达显著减少,E-cad 表达显著增加(P<0.05),且LDHA与H3K18la在肾小管的共定位水平降低。此外,与模型组相比,清肾颗粒组小鼠血清 Scr、BUN 水平及肾组织内乳酸含量均显著降低(P<0.05)。细胞实验中,与模型组相比,清肾颗粒含药血清提高细胞活力、促进细胞增殖(P<0.05)。与模型组相比,清肾颗粒含药血清组细胞内α-SMA、LDHA、H3K18la 表达减少(P<0.05);同时显著提高细胞外OCR、降低ECAR,减少细胞内乳酸含量(P<0.05)。外源性补充乳酸后,与清肾颗粒含药血清组相比,细胞内LDHA、H3K18la及α-SMA的抑制作用被显著逆转(P<0.05)。 结论 清肾颗粒通过调控糖酵解重编程、减少乳酸堆积及抑制组蛋白H3K18乳酸化,发挥减轻肾纤维化的作用。

关键词: 清肾颗粒, 糖酵解重编程, 组蛋白乳酸化, 肾纤维化

Abstract:

Objective To investigate the effects of Qingshen Granules (QSG) on folic acid (FA)-induced renal fibrosis in mice and TGF-β1-stimulated HK-2 cells and the underlying mechanism. Methods A mouse model of FA-induced renal fibrosis were treated daily with QSG at 4.0 g·kg-¹ via gavage for 4 weeks. Renal histopathological changes were evaluated using HE and Masson staining, and renal expressions of fibrosis markers, key glycolytic pathway proteins, and histone lactylation-related proteins (Pan Kla, and lactylation sites of H3/H4) were detected using Western blotting. Renal expressions of α-SMA, FN, E-cad, LDHA, and H3K18 lactylation (H3K18la) were also examined with immunofluorescence staining. Serum creatinine (SCR) and blood urea nitrogen (BUN) were measured by ELISA, and renal lactate content was determined with colorimetric assay. In HK-2 cells stimulated with TGF-β1, the effects of QSG-medicated serum from SD rats on cell viability, proliferation, protein expressions of α‑SMA, E-cad, LDHA, and H3K18la, extracellular oxygen consumption rate (OCR), extracellular acidification rate (ECAR), and intracellular lactate levels were analyzed. Results The mouse models of renal fibrosis showed increased renal expressions of α‑SMA, FN, HIF-1α, HK2, PFKM, PKM2, LDHA, Pan Kla, and H3K18la, elevated serum SCR and BUN and renal lactate level, and decreased E-cad expression. QSG treatment effectively reversed these changes and alleviated renal fibrosis in the mouse models. Immunofluorescence staining showed that QSG treatment significantly reversed the elevation of renal α‑SMA, FN and LDHA expressions and reduction of LDHA/H3K18la co-localization, and enhanced E-cad expression. In HK-2 cells, TGF‑β1 treatment significantly reduced cell viability, proliferation and OCR, and increased ECAR, lactate, α‑SMA, LDHA, and H3K18la, which were all reversed by treatment with QSG-medicated serum. Exogenous lactate obviously reversed the inhibitory effects of QSG on these proteins. Conclusion QSG alleviates renal fibrosis in mice by modulating glycolytic reprogramming, reducing lactate accumulation, and inhibiting H3K18la.

Key words: Qingshen Granules, glycolytic reprogra-mming, histone lactylation, renal fibrosis