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1.河北中医药大学研究生院,河北省石家庄市桥西区新石南路326号,050200
2.河北省中医院
3.河北医科大学第一医院
Received:10 June 2025,
Revised:2025-07-10,
Published:02 November 2025
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李睿嘉,张倩倩,李静等.当归芍药散对缺氧高糖诱导肾小球内皮细胞脂毒性损伤的影响[J].中医杂志,2025,66(21):2249-2258.
LI Ruijia,ZHANG Qianqian,LI Jing,et al.Effects of Danggui Shaoyao Powder (当归芍药散) on Lipotoxic Injury in Hypoxia and High Glucose-Induced Glomerular Endothelial Cells[J].Journal of Traditional Chinese Medicine,2025,66(21):2249-2258.
李睿嘉,张倩倩,李静等.当归芍药散对缺氧高糖诱导肾小球内皮细胞脂毒性损伤的影响[J].中医杂志,2025,66(21):2249-2258. DOI: 10.13288/j.11-2166/r.2025.21.012.
LI Ruijia,ZHANG Qianqian,LI Jing,et al.Effects of Danggui Shaoyao Powder (当归芍药散) on Lipotoxic Injury in Hypoxia and High Glucose-Induced Glomerular Endothelial Cells[J].Journal of Traditional Chinese Medicine,2025,66(21):2249-2258. DOI: 10.13288/j.11-2166/r.2025.21.012.
目的
2
基于抑制沉默信息调节因子1(Sirt1)调控缺氧诱导因子1α(Hif-1α)/内质网应激(ERS)轴探讨当归芍药散治疗糖尿病肾脏疾病(DKD)的可能作用机制。
方法
2
通过CCK8法检测小鼠肾小球内皮细胞(MRGEC)在不同浓度当归芍药散干预下的增殖率,筛选当归芍药散干预浓度进行后续实验。将MRGEC分为缺氧低糖对照组、缺氧高糖模型组、当归芍药散组、厄贝沙坦组、Sirt1抑制剂组、Sirt1抑制剂+当归芍药散组、ERS抑制剂组,按照分组分别予对应处理。观察细胞形态,采用流式细胞术检测细胞凋亡率、细胞内活性氧(ROS)水平,全自动生化仪检测细胞中甘油三酯(TG)和总胆固醇(TC)水平,Western Blot法检测
细胞中Sirt1、Hif-1α、B细胞淋巴瘤2(BCL-2)、磷酸化的蛋白激酶R样内质网激酶(p-PERK)、葡萄糖调节蛋白78(GRP78)、激活转录因子4(ATF4)、C/EBP同源蛋白(CHOP)、分化簇31(CD31)、低密度脂蛋白受体(VLDLr)蛋白水平,RT-qPCR法检测细胞中
GRP78、ATF4、CHOP
mRNA表达,免疫荧光法检测细胞中Hif-1α、GRP78、ATF4、CHOP的表达。
结果
2
筛选出0.7 mg/ml浓度的当归芍药散进行后续实验。缺氧低糖对照组MRGEC呈梭形,排列规则且有序;缺氧高糖模型组MRGEC胞体缩小,细胞间隙增大,失去有序排列特征;Sirt1抑制剂组MRGEC杂乱分布,细胞间隙更大;当归芍药散组、厄贝沙坦组、Sirt1抑制剂+当归芍药散组、ERS抑制剂组上述特征均有所缓解。与缺氧低糖对照组比较,缺氧高糖模型组细胞凋亡率、细胞内ROS水平升高(
P
<0.05);细胞中TG、TC水平升高,Sirt1、BCL-2、CD31蛋白水平降低,Hif-1α、p-PERK、VLDLr蛋白水平升高,GRP78、ATF4、CHOP蛋白及mRNA表达升高(
P
<0.05)。与缺氧高糖模型组比较,Sirt1抑制剂组上述指标更加严重,当归芍药散组、厄贝沙坦组、ERS抑制剂组上述指标有所改善(
P
<0.05)。与Sirt1抑制剂+当归芍药散组比较,当归芍药散组细胞上述指标有所改善(
P
<0.05)。与Sirt1抑制剂组比较,Sirt1抑制剂+当归芍药散组细胞上述指标有所改善(
P
<0.05)。
结论
2
当归芍药散可以抑制缺氧高糖诱导的MRGEC凋亡,其可能通过靶向Sirt1调控Hif-1α/ERS,从而缓解MRGEC的脂毒性损伤,延缓DKD的进展。
Objective
2
To investigate the potential mechanism of
Danggui Shaoyao Powder
(当归芍药散, DSP) in the treatment of diabetic kidney disease (DKD) based on the regulatory role of silent information regulator 1 (Sirt1) on hypoxia-inducible factor 1α (Hif-1α) and endoplasmic reticulum stress (ERS).
Methods
2
The proliferation rate of mouse glomerular endothelial cells (MRGECs) under different concentrations of DSP was measured using the CCK-8 assay to determine the optimal intervention concentration for subsequent experiments. MRGECs were divided into the following groups: hypoxia-low glucose control, hypoxia-high glucose model, DSP, irbesartan, Sirt1 inhibitor, Sirt1 inhibitor + DSP, and ERS inhibitor. Cells in each group received corresponding treatments. Morphological changes were observed microscopically. Apoptosis rate and intracellular reactive oxygen species (ROS) levels were measured by flow cytometry; intracellular triglyceride (TG) and total cholesterol (TC) levels were assessed using an automated biochemical analyzer. Western Blotting was performed to detect protein levels of Sirt1, Hif-1α, B-cell lymphoma 2 (BCL-2), phosphorylated protein kinase R-like endoplasmic reticulum kinase (p-PERK), glucose-regulated protein 78 (GRP78), activating transcription factor 4 (ATF4), C/EBP homologous protein (CHOP), cluster of differentiation 31 (CD31), and very low-density lipoprotein receptor (VLDLr). mRNA expression of GRP78, ATF4, and CHOP was determined by RT-qPCR, and the expression of Hif-1α, GRP78, ATF4, and CHOP was visualized by immunofluorescence.
Results
2
The optimal DSP concentration was determined to be 0.7 mg/ml. In the hypoxia-low glucose control group, MRGECs showed spindle-like morphology and regular alignment. In contrast, the hypoxia-high glucose model group exhibited cell shrinkage, widened intercellular spaces, and disordered arrangement. Cells in the Sirt1 inhibitor group displayed more severe disorganization, while these morphological alterations were alleviated in the DSP, irbesartan, Sirt1 inhibitor + DSP, and ERS inhibitor groups. Compared with the hypoxia-low glucose control group, the hypoxia-high glucose model group showed significantly increased apoptosis rate and intracellular ROS levels (
P
<0.05), elevated TG and TC levels, decreased Sirt1, BCL-2, and CD31 protein expression, increased Hif-1α, p-PERK, and VLDLr protein levels, and upregulated GRP78, ATF4, and CHOP protein and mRNA expression (
P
<0.05). Compared with the hypoxia-high glucose model group, these changes were further aggravated in the Sirt1 inhibitor group but significantly improved in the DSP, irbesartan, and ERS inhibitor groups (
P
<0.05). Compared with the Sirt1 inhibitor + DSP group, the DSP group showed better improvements in all the above indices (
P
<0.05). Compared with the Sirt1 inhibitor group, the Sirt1 inhibitor + DSP group also exhibited significant amelioration in these parameters (
P
<0.0
5).
Conclusion
2
DSP inhibits apoptosis of MRGECs induced by hypoxia and high glucose, possibly by targeting Sirt1 to regulate the Hif-1α/ERS axis, thereby alleviating lipotoxic injury and delaying the progression of DKD.
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