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中国临床药理学与治疗学 ›› 2021, Vol. 26 ›› Issue (1): 1-9.doi: 10.12092/j.issn.1009-2501.2021.01.001

• 基础研究 •    下一篇

糖肾方抑制TGF-β1/Smad3通路促进小鼠肾小管上皮细胞胆固醇流出

刘 鹏1,赵海玲2,申正日1,王 晨1,王 昀1,邱新萍1,李 平2   

  1. 1北京中医医院顺义医院,北京 101300;2中日友好医院临床医学研究所;免疫炎性疾病北京市重点实验室,北京 100029

  • 收稿日期:2020-07-29 修回日期:2020-12-02 出版日期:2021-01-26 发布日期:2021-02-01
  • 通讯作者: 李平,女,博士,教授,研究方向:中医药防治糖尿病肾病。 Tel: 010-64227163 E-mail: lp8675@163.com
  • 作者简介:刘鹏,男,医师,研究方向:中医药防治糖尿病肾病。 E-mail: drliupeng@sina.cn
  • 基金资助:
    北京市顺义区科技三项费项目(KS201938);国家自然科学基金青年项目(8190152536);国家自然科学基金国际(地区)合作与交流项目(81620108031);北京中医医院顺义医院自然基金项目(SYYJ-201802)

Tangshen formula promotes cellular cholesterol efflux in HG-induced mTECs by suppression of TGF-β1/Smad3 pathway

LIU Peng1, ZHAO Hailing2, SHEN Zhengri1, WANG Chen1, WANG Yun1, QIU Xinping1, LI Ping2   

  1. 1 Shunyi Hospital, Beijing Traditional Chinese Medicine Hospital, Beijing 101300, China
  • Received:2020-07-29 Revised:2020-12-02 Online:2021-01-26 Published:2021-02-01

摘要: 目的:利用高糖诱导的小鼠肾小管上皮细胞(mouse tubular epithelial cells, mTECs)观察中药糖肾方颗粒及Smad3抑制剂SIS3对于TGF-β1/Smad3通路及细胞胆固醇流出通路的影响。方法:25 mmol/L高糖诱导mTECs细胞后,分别给予糖肾方及Smad3抑制剂SIS3干预,利用ELISA试剂盒检测细胞中脂质含量,利用Western blot和Real-time PCR检测细胞中TGF-β1/Smad3通路及过氧化物酶体增殖物激活受体γ共激活因子1α(peroxisome proliferator-activated receptor γ coactivator 1α, PGC-1α)、肝脏X受体(liver X receptor, LXR)、ATP-结合盒转运蛋白A1(ABCA1)、ATP-结合盒转运蛋白G1(ABCG1)的表达。结果:糖肾方可以降低高糖诱导mTECs细胞中总胆固醇(total cholesterol, TC)、甘油三酸酯(triglyceride, TG)、低密度脂蛋白胆固醇(low-density lipoprotein cholesterol, LDL-C)含量,上调高密度脂蛋白胆固醇(high-density lipoprotein cholesterol, HDL-C)含量(P<0.05);糖肾方及Smad3抑制剂SIS3可下调高糖诱导mTECs细胞中TGF-β1、Smad3、Collagen Ⅰ和Fibronectin的表达,上调PGC-1α、LXR、ABCA1、ABCG1的表达(P<0.05)。 结论:糖肾方可通过抑制TGF-β1/Smad3信号通路促进细胞胆固醇流出,减轻肾损害。

关键词: 糖肾方, 糖尿病肾病, TGF-β1/Smad3通路, 胆固醇流出, Smad3抑制剂SIS3

Abstract: AIM: To observe the effect of Tangshen formula (TSF) treatment on TGF-β1/Smad3 pathway and cellular cholesterol efflux and explore its potential mechanism in HG-induced mouse tubular epithelial cells (mTECs). METHODS: After 25 mmol/L high glucose induced mTECs, TSF and Smad3 inhibitor SIS3 were given to intervene respectively. The lipid content in the cells was detected by ELISA kit; TGF-β1/Smad3 pathway and PGC-1α, LXR, ABCA1, ABCG1 were detected by Western blot and real-time PCR. RESULTS: TSF diminished the levels of TC, TG, LDL-C and increased the levels of HDL-C in HG-induced mTECs. Western blot and real-time PCR analysis showed that expression levels of TGF-β1, Smad3, Collagen Ⅰ and Fibronectin were significantly downregulated in the HG-induced mTECs with TSF and SIS3 treatment. And PGC-1α, LXR, ABCA1, ABCG1 expression levels were significantly upregulated in the HG-induced mTECs with TSF and SIS3 treatment. CONCLUSION: TSF can promote the cellular cholesterol efflux in HG-induced mTECs vis suppression of TGF-β1/Smad3 pathway. 

Key words: Tangshen formula, diabetic nephropathy, TGF-β1/Smad3 pathway, cellular cholesterol efflux, SIS3 (Smad3 inhibitor)

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