建立高效液相色谱-串联质谱检测细胞内腺苷酸浓度的方法及其应用
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广东医学院,广东医学院,广东医学院,广东医学院,广东医学院,广东医学院

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广东省科技计划项目(2011B031700057), 广东省自然科学基金项目(S2011010004076), 广东医学院建博科技创新团队基金(STIF201115)和国家自然科学基金(81273549)资助项目


Establishment of High Performance Liquid Chromatography-Tandem Mass Spectrometry for Intracellular Adenosines Analysis and Its Applications
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Guangdong Medical College,Guangdong Medical College,Guangdong Medical College,Guangdong Medical College,Guangdong Medical College,Guangdong Medical College

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This work was supported by grants from Science and Technology Projects of Guangdong Province (2011B031 700057), Guangdong Natural Science Foundation (S2011010004076), Science & Technology Innovation Fund of Guangdong Medical College (STIF201115) and The National Natural Science Fundation of China (81273549)

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    摘要:

    细胞内腺苷酸浓度变化是细胞能量代谢改变的感应器,建立高效液相色谱-串联质谱法检测细胞内腺苷酸浓度的方法有助于监测药物对细胞能量代谢的影响.用含有Na-EDTA的高氯酸溶液超声裂解细胞.采用超高效HSS T3色谱柱 (2.1 mm ×100 mm, 1.8 μm),以8 mmol/L N, N-二甲基己胺(DMHA)水溶液和乙腈为流动相进行梯度洗脱,采用正离子模式质谱检测,在多反应监测(MRM)模式下进行定性定量分析.结果表明,AMP、ADP和ATP分别在(0.1814~14.5164) μmol/L、(0.2342~18.7354) μmol/L和(0.2003~16.0260) μmol/L线性范围内具有良好的线性关系,其相关系数分别为0.9984、0.9964和0.9990.AMP、ADP和ATP的检出限(LOD,S/N>3)分别为1.9291、1.8794 和166.5 nmol/L,定量限(LOQ,S/N>10)为1.9632、1.9672和185.6 nmol/L,且加标回收率为81.8% ~107.8%,相对标准偏差小于7.55%.AMP、ADP和ATP的日内偏差(RSD)分别为6.16%、5.13%和7.66%,日间偏差(RSD)分别为6.36%、2.74%和6.77%.该方法快速、简单、灵敏,能满足细胞内AMP、ADP和ATP含量的检测要求.通过检测分析在不同浓度高良姜挥发油作用下人肺癌A549细胞内AMP、ADP和ATP含量变化,结果显示细胞总的腺苷酸水平和能荷呈浓度依赖性下降,且当浓度达到500 mg/L时ATP/TAN明显下降,而A549细胞中AMP/ATP比例水平呈浓度依赖性增加.这提示高良姜挥发油可通过影响细胞能量代谢抑制细胞增殖.

    Abstract:

    The change of intracellular adenosines concentration is the sensor of cellular energy metabolism changes, and it will contribute to monitor the effect of drugs on cellular energy metabolism with establishment of high performance liquid chromatography-tandem mass spectrometry to detect intracellular adenosines concentration. The adenosines of cells were extracted by ultrasonic extraction with perchloric acid containing Na-EDTA. The chromatographic separation was achieved with a UPLC HSS T3 column and waters containing 8 mmol/L N, N-dimethylhexylamine (DMHA) and acetonitrile as mobile phases at 0.25 ml/min flow rate. The identification and quantification were achieved by using ESI-MS/MS in positive ion and with multiple reactions monitoring (MRM) mode. With linear ranges of AMP ((0.1814~14.5164) μmol/L), ADP ((0.2342~18.7354) μmol/L) and ATP ((0.2003~16.0260) μmol/L), the external calibration method was well used for the quantitation, and the correlation coefficient of AMP, ADP and ATP were 0.9984, 0.9964 and 0.9990 respectively. The limit of detections (LOD, S/N > 3) of AMP, ADP and ATP were 1.9291, 1.8794 and 166.5 nmol/L, and their limit of quantifications (LOQ, S/N > 10) were 1.9632, 1.9672 and 185.6 nmol/L, respectively. The recoveries of the spiked standards varied from 81.8% to 107.8% with relative standard deviations (RSDs) less than 7.55%. The intraday precisions of AMP, ADP and ATP were 6.16%, 5.13% and 7.66%, and their interday precisions were 6.36%, 2.74% and 6.77%, respectively. The method was fast, simple, sensitive and suitable for the quantitative analysis of AMP, ADP and ATP in cell extracts. Analysis of AMP, ADP and ATP in human lung cancer A549 cells treated with different concentration volatile oils of Alpinia officinarum Hance, the results showed that the total level of cellular adenylate energy and ECP were decline with concentration dependence. The levels of ATP/TAN were decreased significantly when the concentration was 500 mg/L but the level of AMP/ATP in A549 cells were increased with concentration dependent. It was suggested that the volatile oils of Alpinia officinarum Hance inhibited cell proliferation by affecting the cellular energy metabolism.

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李宁,张海涛,罗辉,张良滔,熊勇,贾振斌.建立高效液相色谱-串联质谱检测细胞内腺苷酸浓度的方法及其应用[J].生物化学与生物物理进展,2013,40(3):273-280

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  • 收稿日期:2012-04-16
  • 最后修改日期:2012-05-14
  • 接受日期:2012-05-18
  • 在线发布日期: 2013-03-22
  • 出版日期: 2013-03-20