Quantitation of Glutathione by Quinoline-5, 8-Dione-Based Tag Strategy Using MALDI Mass Spectrometry
Quantitation of Glutathione by Quinoline-5, 8-Dione-Based Tag Strategy Using MALDI Mass Spectrometry
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使用 MALDI 质谱法通过基于喹啉-5、8-二酮的标签策略对谷胱甘肽进行定量
DOI:
10.1007/s13361-019-02135-4
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发表时间:
2019-02
影响因子:
3.2
通讯作者:
Guo Xinhua
中科院分区:
文献类型:
--
作者:
Guo Liming;Xiao Chunsheng;Wang Sheng;Gao Tianyang;Ling Ling;Guo Xinhua
In the present work, we developed an UV-absorptive and highly reactive tag aromatic molecule, quinoline-5,8-dione (QLD), for robust quantitative analysis of GSH by matrix-assisted laser desorption/ionization (MALDI) mass spectrometry. The QLD could react with GSH with high efficiency at room temperature, and the resultant QLD-GSH conjugate could be readily detected by MALDI MS without interferences. By using the QLD tag, the detection limit of GSH was lowered to 10 fmol μL−1, which was four orders of magnitude higher than that detected without using the QLD tag. Furthermore, accurate quantitative measurements of GSH in solution were successfully demonstrated by using glutamic acid-cysteine-alanine (ECA) as an internal standard. By properly adjusting the ECA concentrations, the intensity ratio value of QLD-tagged GSH (QLD-GSH) to QLD-tagged ECA (QLD-ECA) displayed a good linearity with GSH concentrations in a broad range from 4 to 4000 μM. Finally, the GSH level in HeLa cell lysates was also successfully detected, and the results are consistent with that obtained by a colorimetric assay. In summary, the proposed QLD-based tag method should be a rapid, cost-/time-effective, and sensitive new method for quantitative determination of GSH by MALDI MS.
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影响因子:
6.2
作者:
Wang Sheng;Xiao Chunsheng;Jiang Liyan;Ling Ling;Chen Xuesi;Guo Xinhua
通讯作者:
Guo Xinhua
影响因子:
7.4
作者:
Wang D;Baudys J;Barr JR;Kalb SR
通讯作者:
Kalb SR
DOI:
10.1002/rcm.7096
发表时间:
2015-01
期刊:
Rapid communications in mass spectrometry : RCM
影响因子:
--
作者:
Donhee Yoon;DongKun Lee;JongHyeon Lee;Sangwon Cha;H. Oh
通讯作者:
Donhee Yoon;DongKun Lee;JongHyeon Lee;Sangwon Cha;H. Oh
DOI:
10.1016/j.jasms.2004.08.011
发表时间:
2004-12
影响因子:
3.2
作者:
Ying L. Li;M. Gross
通讯作者:
Ying L. Li;M. Gross
DOI:
10.1039/c3an00107e
发表时间:
2013-04
期刊:
The Analyst
影响因子:
--
作者:
Zhoufang Zeng;Yandong Wang;Xinhua Guo;Ling Wang;Nan Lu
通讯作者:
Zhoufang Zeng;Yandong Wang;Xinhua Guo;Ling Wang;Nan Lu