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学科主题: 分析化学
题名: Direct infusion electrospray ionization-ion mobility-mass spectrometry for comparative profiling of fatty acids based on stable isotope labeling
其他题名: 基于稳定同位素标记技术的电喷雾离子淌度质谱法的脂肪酸比较分析的开发
作者: Leng JP(冷嘉鹏)1; Guan Q(官青)1; Sun TQ(孙团起)1; Wang HY(王昊阳)1; CUI JIANLAN1; LIU QINGHAO1; ZHANG ZHIXU1; Zhang ZX(张之旭)1; Zhang MY(张曼玉)1; Guo YL(郭寅龙)1
通讯作者: 冷嘉鹏 ; 孙团起 ; 郭寅龙
刊名: Anal. Chim. Acta
发表日期: 2015
DOI: 10.1016/j.aca.2015.06.029
卷: 887, 页:148-154
收录类别: SCI
文章类型: 论文
英文摘要: A rapid method for fatty acids (FAs) comparative profiling based on carboxyl-specific stable isotope labeling (SIL) and direct infusion electrospray ionization-ion mobility-mass spectrometry (ESI-IM-MS) is established. The design of the method takes advantage of the three-dimensional characteristics of IM -MS including drift time, m/z and ion intensity, for comparison of d0-/d6-2,4-dimethoxy-6-piperazin-1-yl pyrimidine (DMPP)-labeled FAs. In particular, without chromatographic separation, the method allowed direct FAs profiling in complex samples due to the advantageous priority of DMPP in signal enhancement as well as the extra resolution that IM-MS offered. Additionally, the d0-/d6-DMPP-labeled FAs showed expected features, including very similar drift times, 6 Da mass deviations, specific reporter ions, similar MS responses, and adherence to the drift time rule regarding the influence of carbon chain length and unsaturation on relative drift times. Therefore, the introduction of isotope analogs minimized the matrix effect and variations in quantification and ensured accurate identification of non-targeted FAs by those typical features. Peak intensity ratios between d0-/d6-DMPP-labeled ions were subsequently used in relative quantification for the detected FAs. The established strategy has been applied successfully in the rapid profiling of trace free FAs between normal and cancerous human thyroid tissues. Sixteen free FAs were found with the increased level with a statistically significant difference (p < 0.05) compared to the normal tissue samples. The integrated SIL technique and ESI-IM-MS are expected to serve as an alternative tool for high-throughput analysis of FAs in complex samples. (C) 2015 Elsevier B.V. All rights reserved.
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000360644100016
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/39693
Appears in Collections:分析化学研究室_期刊论文

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作者单位: 1.中北大学
2.复旦大学上海癌症中心
3.复旦大学上海医科大学
4.中科院上海有机化学研究所, 上海质谱中心
5.安捷伦科技(中国)有限公司

Recommended Citation:
Leng JP,Guan Q,Sun TQ,et al. Direct infusion electrospray ionization-ion mobility-mass spectrometry for comparative profiling of fatty acids based on stable isotope labeling[J]. Anal. Chim. Acta,2015,887:148-154.
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