|Analysis of urinary methylated nucleosides of patients with coronary artery disease by high-performance liquid chromatography/electrospray ionization tandem mass spectrometry|
|Li, Yanru1; Yu, Haiyi2,3,4; Zhao, Wei2,3,4; Xu, Xinye2,3,4; Zhou, Jiang1; Xu, Ming2,3,4; Gao, Wei2,3,4; Yuan, Gu1|
|刊名||RAPID COMMUNICATIONS IN MASS SPECTROMETRY|
|WOS标题词||Science & Technology|
|类目[WOS]||Biochemical Research Methods ; Chemistry, Analytical ; Spectroscopy|
|研究领域[WOS]||Biochemistry & Molecular Biology ; Chemistry ; Spectroscopy|
|关键词[WOS]||POTENTIAL TUMOR-MARKERS ; CANCER-PATIENTS ; BREAST-CANCER ; HEART-FAILURE ; CLINICAL-DIAGNOSIS ; COLORECTAL-CANCER ; MS ANALYSIS ; IDENTIFICATION ; ANGIOTENSIN ; PHENOTYPE|
RATIONALE: In recent years, methylated nucleosides have been considered to be potential biomarkers to human diseases. The early diagnosis of coronary artery disease (CAD) is an unsolved problem in clinical cardiology. The aim of our study is to evaluate whether urinary methylated nucleosides can serve as useful biomarkers for CAD.
METHODS: A solid-phase extraction (SPE) column was used for extraction and purification of methylated nucleosides in urine, and high-performance liquid chromatography/electrospray ionization tandem mass spectrometry (HPLC/ESI-MS/MS) was employed for specific, sensitive and rapid determination of the urinary methylated nucleosides from patients with cardiac events.
RESULTS: We have analyzed six methylated nucleosides (N-3-methylcytidine, N-1-methyladenosine, N-6-methyladenosine, N-2-methylguanosine, N-1-methylguanosine and N-2, N-2-dimethylguanosine) in urine from 51 patients with CAD and 25 non-CADcontrols byHPLC/ESI-MS/MS using selective reactionmonitoring (SRM). Our results have shown that there were significant differences in the N-6-methyladenosine levels from the patients and the non-CAD controls in the urine analyzed.
CONCLUSIONS: The results have indicated that HPLC/ESI-MS/MS is a highly specific and sensitive tool to measure urinary methylated nucleosides for analysis of CAD. Our result has revealed that the evaluation of urinary methylated nucleosides might be helpful in the analysis of CAD by liquid chromatography/mass spectrometry. Therefore, this N-6-methyladenosine is worthy of further studies in the near future. Copyright (C) 2014 John Wiley & Sons, Ltd.
|项目编号||2012CB720600 ; 2012CB720601|
|作者单位||1.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China|
2.Peking Univ Third Hosp, Key Lab Mol Cardiovasc Sci, Minist Educ, Dept Cardiol, Beijing, Peoples R China
3.Peking Univ Third Hosp, Key Lab Mol Cardiovasc Sci, Minist Educ, Inst Vasc Med, Beijing, Peoples R China
4.Minist Hlth, Key Lab Mol Cardiovasc Mol Biol & Regulatory Pept, Beijing, Peoples R China
|Li, Yanru,Yu, Haiyi,Zhao, Wei,et al. Analysis of urinary methylated nucleosides of patients with coronary artery disease by high-performance liquid chromatography/electrospray ionization tandem mass spectrometry[J]. RAPID COMMUNICATIONS IN MASS SPECTROMETRY,2014,28(19):2054-2058.|
|APA||Li, Yanru.,Yu, Haiyi.,Zhao, Wei.,Xu, Xinye.,Zhou, Jiang.,...&Yuan, Gu.(2014).Analysis of urinary methylated nucleosides of patients with coronary artery disease by high-performance liquid chromatography/electrospray ionization tandem mass spectrometry.RAPID COMMUNICATIONS IN MASS SPECTROMETRY,28(19),2054-2058.|
|MLA||Li, Yanru,et al."Analysis of urinary methylated nucleosides of patients with coronary artery disease by high-performance liquid chromatography/electrospray ionization tandem mass spectrometry".RAPID COMMUNICATIONS IN MASS SPECTROMETRY 28.19(2014):2054-2058.|