天然产物研究与开发 ›› 2011, Vol. 23 ›› Issue (4): 704-708.

• 开发研究 • 上一篇    下一篇

共轭亚油酸对脂肪代谢相关基因表达的影响

李杰梅1,徐娟娟1,杨得坡2,陈家树1,3*   

  1. 1中山大学新华学院,广州510520; 2中山大学药学院天然药物与中药研究所,广州 510006; 3中山大学医学院,广州 510080
  • 收稿日期:2010-09-06 出版日期:2011-08-25 发布日期:2011-09-13

Effects of Conjugated Linoleic Acid Isomers on Gene Expression of Proteins Involved in Lipid Metabolism

LI Jie-mei1,XU Juan-juan1,YANG De-po2,CHEN Jia-shu1,3   

  1. 1Xinhua College of Sun Yat-sen University,Guangzhou,510520,China; 2Institute of Natural Medicine and Traditional Chinese Medicine,Sun Yat-sen University,Guangzhou,510006,China; 3School of medicine,Sun Yat-sen University,Guangzhou 510080,China
  • Received:2010-09-06 Online:2011-08-25 Published:2011-09-13

摘要: 本文利用实时定量PCR的测定方法,分析了两种共轭亚油酸(CLA)异构体对3T3-L1小鼠前脂肪细胞脂肪代谢相关基因表达的影响。本研究CLA异构体的处理浓度和时间为75.4 μmol/L,8 d,测定了与能量代谢、细胞凋亡、脂肪酸氧化作用和脂解作用相关的多种基因的mRNA水平。结果显示:两种异构体均能够显著提高UCP1、UCP3、Perilipin和PPARα的mRNA水平,而抑制UCP2的表达水平(P<0.01)。与cis-9,trans-11 CLA相比,trans-10,cis-12 CLA显著提高PKA(P<0.05)、CPT-1和TNF-α(P<0.01)的mRNA水平。与对照组相比,两种CLA异构体处理组均对HSL、ATGL、ACO和Leptin的基因表达无显著影响。

关键词: 共轭亚油酸, 异构体, 荧光定量PCR, 3T3-L1

Abstract: RT-PCR was employed to determine isomer-specific effects of two conjugated linoleic acid (CLA) isomers on enzymes involved in lipid metabolism in cultured 3T3-L1 adipocytes.Concentration of either isomer was 75.4 μmol/L and treatment period was 8 days.mRNA levels of proteins involved in energy expenditure,apoptosis,fatty acid oxidation and lipolysis were identified.The results showed that gene expression of UCP1,UCP3,Perilipin and PPAR? increased whereas UCP2 (P<0.01) reduced for both CLA isomers.And compared with treatment of cis-9,trans-11 CLA,trans-10,cis-12 CLA significantly up-regulated mRNA levels of PKA (P<0.05),CPT-1 and TNF-α (P<0.01).Compared with control,both isomers did not significantly influence gene expression of HSL,ATGL,ACO and Leptin.

Key words: conjugated linoleic acid, isomer, quantitative real-time reverse transcriptase PCR, 3T3-L1

中图分类号: 

R966