天然产物研究与开发 ›› 2020, Vol. 32 ›› Issue (6): 953-960.doi: 10.16333/j.1001-6880.2020.6.007

• 研究论文 • 上一篇    下一篇

柽柳黄素对3T3-L1脂肪细胞胰岛素抵抗的影响及AMPK信号通路的作用机制

伍明江1,张德芹2*,李盼2,石旭柳3,刘璐4   

  1. 1遵义医药高等专科学校药学系,遵义 563006;2天津中医药大学 中医药研究院,天津 301617;3河北农业大学渤海校区理工学院,黄骅 061100;4北京中医药大学东方学院中药学院,廊坊 065001

  • 出版日期:2020-06-28 发布日期:2020-07-06
  • 基金资助:
    国家“重大新药创制”科技重大专项(2012ZX09101212)

Effect of tamarixetin on insulin resistance of 3T3-L1 fat cells and the mechanism of AMPK signaling pathway

WU Ming-jiang1,ZHANG De-qin2*,LI Pan2,SHI Xu-liu3,LIU Lu4#br# #br#
  

  1. 1Department of Pharmacy,Zunyi Medical and Pharmaceutical College,Zunyi 563006,China;2Research Institute of Traditional Chinese Medicine (TCM),Tianjin University of TCM,Tianjin 301617,China;3Institute of Technology,Bohai Campus-Hebei Agricultural University,Huanghua 061100,China;4College of TCM,Bejing University of Chinese Medicine Dongfang College,Langfang 065001,China

  • Online:2020-06-28 Published:2020-07-06

摘要:

为探讨柽柳黄素对3T3-L1脂肪细胞胰岛素抵抗的影响及AMPK信号通路的作用机制,本研究利用地塞米松诱导3T3-L1脂肪细胞,建立胰岛素抵抗模型,通过给药后检测细胞对Glu的摄取量和细胞内TG的含量,并采用qRT-PCR对AMPK信号通路中相关基因进行检测,利用分子对接软件对AMPK信号通路中相关蛋白进行分子对接,进一步采用Western blot进行蛋白检测。研究结果表明,当柽柳黄素作用48 h后,高低剂量组均显著增加细胞对Glu的摄取(P<0.01),高剂量组显著降低细胞内TG含量(P<0.05);作用机制显示柽柳黄素具有显著提高AMPK(P<0.01)和降低FAS(P<0.05)基因的表达,能与FAS蛋白具有较好的分子对接,可增加P-AMPK、P-ACC、P-PKB和PPARα和抑制FAS蛋白的表达。该研究说明柽柳黄素可增强胰岛素抵抗模型3T3-L1脂肪细胞对Glu的摄取,降低TG在细胞内的含量,其作用机制可能与AMPK信号通路中相关基因和蛋白调节有关。

关键词: 柽柳黄素, 胰岛素抵抗, 3T3-L1脂肪细胞, AMPK信号通路, 分子对接

Abstract:

In order to investigate the effect of tamarixetin on insulin resistance of 3T3-L1 fat cells and the mechanism of AMPK signaling pathway,the 3T3-L1 fat cells were induced by dexamethasone and insulin resistance model was established,then Glu uptake and TG content were detected after administration;Further,qRT-PCR was used to detect the related genes in AMPK signaling pathway,molecular docking was carried out for the related proteins by the docking software,and Western blot was used to protein detection.The results showed that when tamarixetin treated for 48 hours,the Glu uptake had significantly increased in the high and low dose groups (P<0.01),the TG content had significantly decreased in the high dose group (P<0.05);In addition,tamarixetin significantly increased the gene expression of AMPK (P<0.01),decreased the gene expression of FAS (P<0.05),had a good molecular docking with FAS protein,promoted the protein expression of P-AMPK,P-ACC,P-PKB and PPARα,and inhibited the protein expression of FAS.This study provide that tamarixetin can increase the Glu uptake and decrease TG content,which may be related to the regulation of related genes and proteins in AMPK signaling pathway.

Key words: tamarixetin, insulin resistance, 3T3-L1 fat cells, AMPK signal pathway, molecular docking

中图分类号:  R966