波谱学杂志 ›› 2010, Vol. 27 ›› Issue (1): 103-112.

• 恭祝徐广智先生八十华诞(专辑) • 上一篇    下一篇

利用基于1H NMR的代谢组学分析研究重离子辐射对大鼠额叶皮质区的影响

  

  1. 1.北京化工大学 理学院, 北京 100029; 2.北京理工大学 生命学院, 北京 100081
  • 收稿日期:2009-12-15 出版日期:2010-03-05 发布日期:2010-03-05
  • 基金资助:

    工业及信息科技部资助项目(2008AA12A218, D2220062902).

Effects of Heavy Ion Radiation on Rat Frontal Cortex Studied by 1H NMR Based Metabonomics Data Analysis

  1. 1.College of Science, Beijing University of Chemical Technology, Beijing 100029, China; 
    2.School of Life Science, Beijing Institute of Technology, Beijing 100081, China
  • Received:2009-12-15 Online:2010-03-05 Published:2010-03-05
  • Supported by:

    工业及信息科技部资助项目(2008AA12A218, D2220062902).

摘要:

太空辐射尤其是重离子辐射可造成DNA的破坏、细胞死亡、以及一些癌症的发生,是人类深空探索进程中急需克服的难题. 本文通过重离子加速器产生12C6+重离子束对大鼠头部进行一定剂量的辐射,模拟空间重离子辐射对中枢神经系统(CNS)的生物学效应. 采用基于1H NMR的代谢组学方法对辐射大鼠大脑额叶皮质区进行了测定分析,结合数据的统计分析和检验,发现了包括一些重要CNS神经递质在内的代谢物含量发生明显变化. 这些代谢物主要为:牛磺酸、乳酸、谷氨酸、4-氨基丁酸、以及磷酸胆碱等. 结合差异蛋白质组结果分析,包括4-氨基丁酸、谷氨酸、乳酸、牛磺酸等在内的代谢物参与的主要生物途径,如神经递质的合成途径,以及神经递质受体介导的信号途径可能受重离子辐射的负面影响. 这些发现将为进一步阐明重离子辐射效应的分子机制提供有利信息,从而为从生物学途径探寻有效重离子辐射防护措施提供依据.

关键词: 1H NMR, 代谢组学, 12C6+重离子辐射, 大鼠额叶皮质, 神经递质

Abstract:

Space radiation, especially heavy-ion radiation, can cause the damages to DNA, cell death and incidence of some types of cancer. We studied the effects of heavy-ion radiation on cerebral metabolism in rats. To simulate the biological effects of space heavy ions radiation on the central nervous system (CNS), rats heads were exposed to 12C6+ particle beam. The 1H NMR based metabonomics approach was used to analyze the changes in metabolic profiles of the frontal cortex of the rats exposed to radiation. The results revealed that heavy-ion radiation caused significant changes in the levels of some cerebral metabolites, including taurine, lactate, creatine, myo-inositol, phosphorylcholine and some key neurotransmitters (i.e., glutamate and 4-aminobutyric acid).  The results of further differential proteomics analysis showed that there were significant changes in the  neurotransmitter synthesis pathway and neurotransmitter receptor-mediated signaling pathways after heavy-ion radiation. The findings from this study provided useful information on the molecular mechanism of the effects of heavy-ion radiation on cerebral metabolism.

Key words: 1H NMR, metabonomics, heavy ion radiation, rat forntal cortex, neurotransmitter

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