A chip-based amide-HILIC LC/MS platform for glycosaminoglycan glycomics profiling.
A chip-based amide-HILIC LC/MS platform for glycosaminoglycan glycomics profiling.
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DOI:
10.1002/pmic.200701008
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发表时间:
2009-02
期刊:
影响因子:
3.4
通讯作者:
Zaia, Joseph
中科院分区:
文献类型:
--
作者:
Staples, Gregory O.;Bowman, Michael J.;Costello, Catherine E.;Hitchcock, Alicia M.;Lau, James M.;Leymarie, Nancy;Miller, Christine;Naimy, Hicham;Shi, Xiaofeng;Zaia, Joseph
关键词:
A key challenge to investigations into the functional roles of glycosaminoglycans (GAGs) in biological systems is the difficulty in achieving sensitive, stable and reproducible mass spectrometric analysis. GAGs are linear carbohydrates with domains that vary in the extent of sulfation, acetylation and uronic acid epimerization. It is of particular importance to determine spatial and temporal variations of GAG domain structures in biological tissues. In order to analyze GAGs from tissue, it is useful to couple mass spectrometry with an on-line separation system. The purposes of the separation system are both to remove components that inhibit GAG ionization and to enable the analysis of very complex mixtures. This contribution presents amide-silica hydrophilic interaction chromatography (HILIC) in a chip-based format for LC/MS of heparin, heparan sulfate and chondroitin/dermatan sulfate GAGs. The chip interface yields robust performance in the negative ion mode that is essential for GAGs and other acidic glycan classes while the built-in trapping cartridge reduces background from the biological tissue matrix. The HILIC chromatographic separation is based on a combination of the glycan chain lengths and the numbers of hydrophobic acetate groups and acidic sulfate groups. In summary, chip based amide-HILIC LC/MS is an enabling technology for GAG glycomics profiling.
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影响因子:
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通讯作者:
Ringborg, LH
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