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中国临床药理学与治疗学 ›› 2021, Vol. 26 ›› Issue (9): 978-985.doi: 10.12092/j.issn.1009-2501.2021.09.002

• 基础研究 • 上一篇    下一篇

糖肾方激活PGC-1α/LXR/ABCA1信号通路改善高脂诱导的巨噬细胞胆固醇摄取及流出

许可1,高骏伟1,刘鹏2,申正日2,贾慧2,吴宸广1,田锋1,王立范1,李平3   

  1. 1黑龙江省中医药科学院,哈尔滨 150000,黑龙江;2北京中医医院顺义医院,北京 101300;3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:2021-03-16 修回日期:2021-05-23 出版日期:2021-09-26 发布日期:2021-09-30
  • 通讯作者: 王立范,男,博士后,主任医师,硕士研究生导师,研究方向:中医药治疗慢性肾脏病。 E-mail: wlf4648374@163.com 李平,女,博士,教授/研究员,免疫炎性疾病北京市重点实验室主任,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:许可,女,在读硕士研究生,研究方向:中医药防治慢性肾脏病。 E-mail: xk940223@126.com
  • 基金资助:
    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)

Tangshen formula improves cholesterol uptake and efflux of macrophages induced by high lipid via activating PGC-1α/LXR/ABCA1 pathway

XU Ke 1, GAO Junwei 1, LIU Peng 2, SHEN Zhengri 2, JIA Hui 2, WU Chenguang 1, TIAN Feng 1, WANG Lifan 1, LI Ping 3   

  1. 1 Heilongjiang Academy of Chinese Medicine Sciences, Harbin 150000, Heilongjiang, China; 2 Shunyi Hospital, Beijing Traditional Chinese Medicine Hospital, Beijing 101300, China; 3 Beijing Key Lab Immune-mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China
  • Received:2021-03-16 Revised:2021-05-23 Online:2021-09-26 Published:2021-09-30

摘要: 目的:观察中药糖肾方对棕榈酸钠诱导的RAW264.7巨噬细胞的脂质流出、摄取等转运相关分子的影响。方法:用棕榈酸钠(PA)诱导RAW264.7巨噬细胞制造高脂环境,经MTT测定后给予不同浓度糖肾方及PGC-1α-siRNA干预;利用Western blot和Real-time PCR检测细胞过氧化物酶体增殖激活受体γ共激活因子1α(PGC-1α)、肝脏X受体(LXR)、ATP-结合盒转运蛋白(ABCA1)、分化簇36(CD36)的表达;Filipin染色及BODIPY 493/503染色观察糖肾方对细胞内脂滴沉积的影响。结果:Western blot及Real-time PCR的结果提示PA组PGC-1α、LXR、ABCA1表达减少,CD36表达增加(P<0.05),给予糖肾方干预可上调PGC-1α、LXR、ABCA1的表达,下调CD36的表达(P<0.05);Filipin染色及BODIPY 493/503染色结果显示糖肾方可改善高脂状态下细胞内脂滴沉积的情况。PGC-1α-siRNA干预可抑制糖肾方上调PGC-1α、LXR、ABCA1表达以及抑制CD36的表达的作用。 结论:糖肾方可激活PGC-1α/LXR/ABCA1信号通路促进脂质流出、下调CD36的表达抑制脂质摄取,改善因脂质代谢异常引起的相关疾病等。

关键词: 糖肾方, 高脂血症, PGC-1α/LXR/ABCA1通路, CD36

Abstract: AIM: To observe the effects of Tangshen formula (TSF) treatment on lipid efflux and uptake in sodium palmitate (PA) induced RAW264.7 macrophages.  METHODS: After 200 μmol/L PA induced RAW264.7 macrophages, TSF and PGC-1α-siRNA were given to intervene respectively. The lipid content in the cells was detected by ELISA kit; intracellular lipid droplet deposition was detected by BODIPY 493/503 and Filipin staining. Western blot and Real-time PCR were used to detect the expression of PGC-1α, LXR, ABCA1 and CD36. RESULTS:  TSF diminished the levels of TC, TG and intracellular lipid droplet deposition in PA-induced RAW264.7 macrophages. Western blot and Real-time PCR analysis showed that TSF could up-regulate the expression of PGC-1α, LXR, ABCA1 and down-regulate the expression of CD36. Furthermore, silencing PCG-1α by SiRNA significantly suppressed the effects of upregulating the expression of PGC-1α, LXR and ABCA1, and downregulating the CD36 expression with TSF treatment. CONCLUSION: TSF may extenuate intracellular lipid droplet deposition in macrophages by upregulating cholesterol efflux through activating the PGC-1α/LXR/ABCA1 pathway and inhibiting lipid uptake through down-regulateing the expression of CD36.

Key words: Tangshen formula, hyperlipidemia, PGC-1α/LXR/ABCA1 pathway, CD36

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