食品科学 ›› 2006, Vol. 27 ›› Issue (11): 229-232.

• 基础研究 • 上一篇    下一篇

L-苹果酸对苹果酸天冬氨酸穿梭转运蛋白及酶基因表达的作用研究

  吴军林,  吴清平,  韦明肯,  吴慧清,  周小燕   

  1.  中国科学院南海海洋研究所; 广东省微生物研究所广东省菌种保藏与应用重点实验室; 广东省微生物研究所广东省菌种保藏与应用重点实验室
  • 出版日期:2006-11-15 发布日期:2011-11-28

Effect of L-malate on Gene Expression of Proteins and Enzymes Related to the Malate-aspartate Shuttle

   Wu-Jun-Lin,   Wu-Qing-Ping,   Wei-Ming-Ken,   Wu-Hui-Qing,   Zhou-Xiao-Yan   

  1. 1.South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China; 2.Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application,Guangdong Institute of Microbiology,Guangzhou 510070,China; 3.Graduate University of the Chinese Academy of Sciences,Beijing 100049,China
  • Online:2006-11-15 Published:2011-11-28

摘要: 采用半定量RT-PCR方法,对小鼠给予L-苹果酸后肝线粒体苹果酸天冬氨酸穿梭相关的两种线粒体酶:线粒体天冬氨酸氨基转移酶(mitochondrialaspartateaminotransferase,mAST)及线粒体苹果酸脱氢酶(mitochondrialmalatedehydrogenase,mMDH)及线粒体内膜上的天冬氨酸谷氨酸转运蛋白(AGC)与α-酮戊二酸苹果酸转运蛋白(OMC)的基因表达进行检测,探讨了L-苹果酸对肝线粒体苹果酸天冬氨酸穿梭的关键酶及转运蛋白mRNA表达规律。半定量RT-PCR结果表明:剂量组小鼠肝线粒体转运蛋白AGCmRNA的表达显著高于空白对照组,而mAST、mMDH及转运蛋白OMCmRNA的表达无显著性差异。由此可知,L-苹果酸能促进TCA循环及苹果酸天冬氨酸穿梭,其分子生物学机理与L-苹果酸提高AGC的基因表达水平有关。

关键词:  , L-苹果酸, 苹果酸天冬氨酸穿梭, 转运蛋白

Abstract:  To investigate the expression change of two key enzymes in mitochondria and carried proteins (AGC and OMC) in inner member of mitochondria related to malate-aspartate shuttle,the expression of these proteins was examined in liver of mice treated L-malate by methods of RT-PCR. RT-PCR was used to analyze the expression of key enzymes (mAST and mMDH) mRNA and carried protein (AGC and OMC) mRNA after treatment of L-malate. The results indicated that the expression of AGC mRNA was increased significantly in the L-malate treated group compared with control group. There were no difference in the levels of mAST,mMDH and OMC mRNA. The results predict a potential molecule mechanism that L- malate increased capability of the malate-aspartate shuttle by enhancing the level of AGC mRNA.

Key words: L-malate, malate-aspartate shuttle, carried protein