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红景天提取物对3T3睱1脂肪细胞增殖及细胞分化的影响

2015-10-21李新明高忠东等

安徽农业科学 2015年5期

李新明 高忠东等

摘要

[目的]应用3T3L1前脂肪細胞株,分析红景天提取物(Rhodiola rosea L. herb extract, RRLHE)对3T3L1细胞增殖和分化的作用。[方法]使用油红O染色法对红景天提取物干预分化的细胞进行评估并定量分析脂肪细胞分化程度。通过逆转录多聚酶联反应(RT-PCR)来检测脂肪细胞分化相关基因过氧化物体增殖剂活化受体γ(PPARγ)、CAAT/增强子结合蛋白α(C/EBPα)mRNA的表达。[结果]红景天提取物能显著抑制3T3L1细胞增殖和向成熟脂肪细胞分化,另外,红景天提取物能显著提高3T3L1前脂肪细胞的葡萄糖摄取和利用率,红景天提取物明显抑制PPARγ、C/EBPα mRNA表达,与对照组比较,差异显著(P<0.01)。[结论]红景天提取物对3T3L1细胞增殖和分化均有抑制作用,并能提高3T3L1前脂肪细胞的葡萄糖摄取和利用率,其影响机制与钝化 PPARγ、C/EBPα mRNA 的表达有关系。

关键词 红景天提取物;3T3L1;细胞分化;PPARγ mRNA

中图分类号 S188 文献标识码 A 文章编号 0517-6611(2015)05-025-02

Effects of Rhodiola rosea L. Herb Extract on 3T3L1 Proliferation and Differentiation

LI Xinming, GAO Zhongdong, LI Qun et al

(Processing Institute of Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi 030031)

Abstract [Objective] Preadipocyte 3T3L1 was used to evaluate the effect of Rhodiola rosea L. herb extract (RRLHE) on preadipocyte 3T3L1 proliferation and differention. [Method] Oil red O staining method was used for evaluation of effect of Rhodiola rosea L. herb extract (RRLHE) on preadipocyte 3T3L1 proliferation and differention. Adipocyte differentiation related genes expression, peroxisome proliferation activator receptor γ(PPARγ) and CAAT/enhancer binding protein α(C/EBPα) mRNA, were examined by using the reverse transcription polymerase chain reaction (Real time QPCR). [Result] RRLHE could significantly inhibit preadipocyte 3T3L1 proliferation and differention toward mature adipocytes. In addition, RRLHE could significantly increase 3H glucose uptake rate in preadipocyte 3T3L1. RRLHE could significantly inhibit PPARγ and C/EBPα mRNA expression compared to control group. [Conclusion] RRLHE can inhibit preadipocyte 3T3L1 proliferation and differention toward mature adipocytes, enhance 3H glucose uptake rate in preadipocyte 3T3L1. The inhibitory effect has a relationship to deactivation of PPARγ and C/EBPα mRNA genes expression.

Key words Rhodiola rosea L. herb extract; 3T3L1; Cell differentiation; PPARγ mRNA

作者简介

李新明(1970-),男,陕西西安人,副研究员,从事食品科学研究。

收稿日期 20141229

红景天是景天科(Crassulaceae)红景天属(Rhodiola L.)多年生草本或亚灌木植物。红景天中含有多种化学成分,主要有黄酮类、酪醇、红景天苷、谷甾醇、有机酸、挥发油、多糖、脂肪、蛋白质等,具有增强免疫功能,保护心脑血管等功效[1-2]。

笔者从与脂肪细胞分化密切相关的2个因子过氧化物体增殖剂活化受体γ(peroxisome proliferator activated receptor PPARγ)和CAAT/增强子结合蛋白α(CAAT/enhancer binding protein C/EBPα)入手,观察了红景天提取物对其mRNA表达的影响,为深入探讨红景天提取物改善脂代谢的机制提供理论依据。

1 材料与方法

1.1 药物与试剂

红景天提取物为山西省农业科学院制备。

3T3L1前脂肪细胞株购自American Type Culture Collection (ATCC)。其他试剂为Amresco公司产品或购自Sigma公司。

1.2 3T3L1前脂肪细胞的增殖及检测

前脂肪细胞(3T3L1)分为对照组(不加药)和药物处理组。不同浓度前脂肪细胞(3T3L1)接种在96孔板上,参照XTT法描述,测定吸光度值(A570),建立细胞数目曲线。……

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