基于FXR/SHP/SREBP-1c及FXR/ApoCⅡ通路探讨健脾升清方对非酒精性脂肪性肝病大鼠脂代谢的作用

马继征; 朱佳杰; 宋德超; 王东方; 冯硕; 刘绍能; 陶夏平

doi:10.3969/j.issn.1006-2157.2023.02.010

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基于FXR/SHP/SREBP-1c及FXR/ApoCⅡ通路探讨健脾升清方对非酒精性脂肪性肝病大鼠脂代谢的作用

实验研究 | 更新时间：2023-03-07

- 基于FXR/SHP/SREBP-1c及FXR/ApoCⅡ通路探讨健脾升清方对非酒精性脂肪性肝病大鼠脂代谢的作用
- Jianpi Shengqing Decoction alleviates non-alcoholic fatty liver disease in rats by regulating lipid metabolism through the FXR/SHP/SREBP-1c and FXR/ApoC Ⅱ pathways
- 北京中医药大学学报 2023年46卷第2期页码：196-206
- 作者机构：
  
  1.中国中医科学院广安门医院　北京　100053
  2.浙江省中医药研究院
  3.北京中医药大学东直门医院
  4.中国中医科学院广安门医院南区
- 作者简介：
  
  马继征，男，博士，副主任医师
  #陶夏平，男，博士，教授，主任医师，博士生导师，主要研究方向：中医药防治肝病，E-mail：taoxiaping@163.com
- 基金信息：
  
  国家自然科学基金项目(81973832);中国中医科学院广安门医院国家中医临床研究示范基地科研专项(2017S377)
- DOI：10.3969/j.issn.1006-2157.2023.02.010
  中图分类号： R285.5
- 收稿：2022-05-11，
  
  网络首发：2022-11-02，
  
  纸质出版：2023-02-28
- 稿件说明：
移动端阅览
马继征, 朱佳杰, 宋德超, 等. 基于FXR/SHP/SREBP-1c及FXR/ApoCⅡ通路探讨健脾升清方对非酒精性脂肪性肝病大鼠脂代谢的作用[J]. 北京中医药大学学报, 2023,46(2):196-206.

MA Jizheng, ZHU Jiajie, SONG Dechao, et al. Jianpi Shengqing Decoction alleviates non-alcoholic fatty liver disease in rats by regulating lipid metabolism through the FXR/SHP/SREBP-1c and FXR/ApoC Ⅱ pathways[J]. Journal of Beijing University of Traditional Chinese Medicine, 2023, 46(2): 196-206. DOI: 10.3969/j.issn.1006-2157.2023.02.010.
马继征, 朱佳杰, 宋德超, 等. 基于FXR/SHP/SREBP-1c及FXR/ApoCⅡ通路探讨健脾升清方对非酒精性脂肪性肝病大鼠脂代谢的作用[J]. 北京中医药大学学报, 2023,46(2):196-206. DOI： 10.3969/j.issn.1006-2157.2023.02.010.

MA Jizheng, ZHU Jiajie, SONG Dechao, et al. Jianpi Shengqing Decoction alleviates non-alcoholic fatty liver disease in rats by regulating lipid metabolism through the FXR/SHP/SREBP-1c and FXR/ApoC Ⅱ pathways[J]. Journal of Beijing University of Traditional Chinese Medicine, 2023, 46(2): 196-206. DOI: 10.3969/j.issn.1006-2157.2023.02.010. DOI：

摘要

目的

基于法尼酯衍生物X受体(FXR)/微小异源二聚体(SHP)/固醇调节元件结合蛋白1c (SREBP-1c)及FXR/载脂蛋白CⅡ(ApoCⅡ)通路探讨健脾升清方调控非酒精性脂肪性肝病(NAFLD)模型大鼠脂代谢的分子机制。

方法

48只SD大鼠按随机数字表法随机分为空白组、模型组、健脾升清方高剂量组、健脾升清方中剂量组、健脾升清方低剂量组和奥贝胆酸组。除空白组正常饲养外，其余各组予高脂饲料喂养12周建立NAFLD模型。健脾升清方高、中、低剂量组分别按15.2、7.6和3.8 g/kg剂量灌胃；奥贝胆酸组按10.0 mg/kg剂量灌胃；空白组和模型组灌胃等量生理盐水。每日1次，持续4周。比较各组大鼠体质量和Lee’s指数。使用免疫酶法检测血清胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL)和高密度脂蛋白(HDL)含量，光学显微镜下观察肝脏组织炎症、脂肪变性和气球样变并评分；免疫组织化学法及RT-PCR法分别检测肝脏FXR、SHP、SREBP-1c及ApoCⅡ蛋白及mRNA的表达。

结果

健脾升清方高、中、低剂量组大鼠体质量、Lee’s指数、血清TC均低于模型组(

0.05，

0.01)。健脾升清方高、中、低剂量组大鼠肝组织炎症评分低于模型组(

0.01)，中、低剂量组肝组织脂肪变性评分低于模型组(

0.05，

0.01)，中剂量组肝组织气球样变评分低于模型组(

0.01)。健脾升清方高剂量组、奥贝胆酸组大鼠肝组织FXR蛋白表达高于模型组(

0.05)；模型组SHP及ApoCⅡ蛋白表达均低于空白组(

0.05)，但各治疗组与模型组相比，差异均无统计学意义；健脾升清方中剂量组、奥贝胆酸组大鼠肝组织SREBP-1c低于模型组(

0.05，

0.01)。健脾升清方中剂量组大鼠肝组织FXR mRNA表达高于模型组(

0.05)；高剂量组SHP mRNA表达高于模型组(

0.05)；中剂量组、奥贝胆酸组SREBP-1c mRNA表达低于模型组(

0.01)。

结论

健脾升清方可能通过调控FXR/SHP/SREBP-1c脂质代谢信号通路，促进胆固醇和甘油三酯的分解，改善模型大鼠肝组织脂肪变性及其炎症损伤，从而发挥治疗NAFLD的作用。

Abstract

Objective

We aimed to investigate the molecular mechanisms underlying the effects of

Jianpi Shengqing

Decoction (JPSQ

a compound prescription for invigorating spleen and upbearing the clear) on lipid metabolism in a rat model of non-alcoholic fatty liver disease (NAFLD). We focused on the farnesoid X receptor (FXR)/small heterodimer protein (SHP)/sterol regulatory element binding protein 1c (SREBP-1c) and FXR/apolipoprotein CⅡ (ApoCⅡ) pathways.

Methods

According to the random number table method

forty-eight Sprague-Dawley rats were divided into the blank group

the model group

the JPSQ high-dose group

the JPSQ medium-dose group

the JPSQ low-dose group

and the obeticholic acid group (

=8 rats per group). The rats in the blank group were fed normally

and the other rats were fed a high-fat diet for 12 weeks to establish the NAFLD model. The blank and model groups were given saline; the high-

medium-

and low- dose groups were administered 15.2

7.6

and 3.8 g/kg JPSQ

respectively; the obeticholic acid group was given 10.0 mg/kg

once daily for 4 weeks. Body weight and Lee’s index were recorded. The serum levels of TC

LDL

and HDL were measured using immunoenzymatic assays

and the inflammation

steatosis

and ballooning degeneration of liver tissue were observed and scored under the microscope. The protein expression levels of FXR

SHP

SREBP-1c

and ApoCⅡ in liver were detected by immunohistochemistry (IHC)

and the mRNA levels were determined by RT-PCR.

Results

The body weight

Lee’s index

and serum TC levels were lower in the JPSQ high-

medium-

and low- dose groups than in the model group (

0.05

0.01). The inflammation scores in the JPSQ high-

medium-

and low- dose groups were lower than in the model group (

0.01). The steatosis scores in the JPSQ medium- and low- dose groups were lower than in the model group (

0.05

0.01)

and the ballooning degeneration scores in the JPSQ medium-dose group were lower than in the model group (

0.01). IHC result showed that the protein expression levels of FXR were higher in the JPSQ high-dose and obeticholic acid groups than in the model group (

0.05). Levels of SHP and ApoCⅡwere lower in the model group than that in the blank group (

0.05)

but no significant differences were seen in the JPSQ high-

medium-

low- dose and obeticholic acid groups compared with the model group. SREBP-1c levels were lower in the JPSQ medium-dose and obeticholic acid groups than in the model group (

0.05

0.01). RT-PCR result showed that the FXR mRNA levels were higher in the JPSQ medium-dose group than in the model group (

0.05). The SHP mRNA levels were higher in the JPSQ high-dose group than in the model group (

0.05). The SREBP-1c mRNA levels were lower in the JPSQ medium-dose and obeticholic acid groups than in the model group (

0.01).

Conclusion

Jianpi Shengqing

Decoction may play a role in the treatment of NAFLD by regulating lipid metabolism through the FXR/SHP/SREBP-1c signaling pathway. It promoted the decomposition of TC and TG

and improved the state of steatosis of liver tissue and reduced inflammatory tissue damage in model rats.

关键词

Keywords

references

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