Two-step derivatization and mass spectral distinction of α2,3 and α2,6 sialic acid linkages on N-glycans by MALDI-TOF
Two-step derivatization and mass spectral distinction of α2,3 and α2,6 sialic acid linkages on N-glycans by MALDI-TOF
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通过 MALDI-TOF 对 N-聚糖上的 α 2,3 和 α 2,6 唾液酸键进行两步衍生化和质谱区分
DOI:
10.1016/j.cclet.2018.12.016
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发表时间:
2019-03
影响因子:
9.1
通讯作者:
关锋
中科院分区:
文献类型:
--
作者:
周小满;杨上;杨刚龙;谭增琦;关锋
Sialylation is one of important glycosylation in human beings and plays an important role in cancer development.α2,3-Linked andα2,6-linked sialic acids are normally observed on the end ofN-glycans and have different functions. Derivatization on sialic acid was designed to detect the different linkages by MALDI-TOF MS. In this study, a two-step derivatization by dimethylamine and ammonium hydroxide was improved to modify the sialic acid and made it easier to detect the different linkages of sialic acids on MALDI-TOF MS. Using this derivatization method, specific sialic acids linkages onN-glycans of protein samples such as fetuin and lactoferrin were detected. For complex cell samples, increasedα2,3-linked andα2,6-linked sialic acids on bi-antennary and tri-antennaryN-glycans were observed in A549 cells induced by hypoxia environment. Taken together, our two-step derivatization of sialic acids offers a simple and accurate way to detect specific linkages onN-glycans with MALDI-TOF mass spectrometer.
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DOI:
10.1073/pnas.1608069113
发表时间:
2016-08
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
Han Xiao;Elliot C. Woods;Petar Vukojicic;C. Bertozzi
通讯作者:
Han Xiao;Elliot C. Woods;Petar Vukojicic;C. Bertozzi
影响因子:
7.4
作者:
Dong, Xuefang;Qin, Hongqiang;Liang, Xinmiao
通讯作者:
Liang, Xinmiao
影响因子:
9.1
作者:
Ting Wu;Xiaohui Yang;Chuanjing Zhang;Zhenping Wang;Yiping Du
通讯作者:
Ting Wu;Xiaohui Yang;Chuanjing Zhang;Zhenping Wang;Yiping Du
DOI:
10.1016/j.jasms.2008.04.033
发表时间:
2008-08-01
影响因子:
3.2
作者:
Snovida, Sergei I.;Rak-Banville, Justin M.;Perreault, Helene
通讯作者:
Perreault, Helene
影响因子:
11.2
作者:
Bull, Christian;Boltje, Thomas J.;Adema, Gosse J.
通讯作者:
Adema, Gosse J.