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One-pot analysis of sulfated glycosaminoglycans.

Shrikanth, C. B. and Sanjana, J. and Nandini, C. D. (2018) One-pot analysis of sulfated glycosaminoglycans. Glycoconjugate Journal, 35. pp. 129-137. ISSN 0282-0080

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Routine isolation, estimation, and characterization of glycosaminoglycans (GAGs) is quite challenging. This is compounded by the fact that the analysis is technique-intensive and more often there will be a limitation on the quantity of GAGs available for various structural, functional and biological studies. In such a scenario, the sample which can be made available for estimation and elucidation of disaccharide composition and species composition as well remains a challenge. In the present study, we have determined the feasibility where isolated sulfated GAGs (sGAG) that is estimated by metachromasia is recovered for further analysis. sGAG-DMMB complex formed after estimation of sGAG byDMMBdye-binding assay was decomplexed and sGAGs were recovered. Recovered sGAGs were analysed by cellulose acetate membrane electrophoresis and taken up for disaccharide composition analysis by HPLC after fluorescent labelling. Good recovery of sGAGs after metachromasia was observed in all samples of varying levels of purity by this protocol. Further analysis using cellulose acetate membrane electrophoresis showed good separation between species of sGAGs namely chondroitin/dermatan sulfate and heparan sulfate, with comparatively lesser interference from hyaluronic acid, a non-sulfated GAG. Analysis of recovered sGAGs, specifically heparan sulfate by HPLC showed characteristic disaccharide composition akin to that of GAG obtained by the conventional protocol. Thus, in the present paper, we show that sGAG can be recovered in comparatively purer form after routine estimation and can be used for further analysis thus saving up on the precious sample.

Item Type: Article
Uncontrolled Keywords: Glycosaminoglycans .DMMBassay . Decomplexing . Cellulose acetate membrane electrophoresis
Subjects: 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 28 Polysaccharide Chemistry
Divisions: Molecular Nutrition
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 03 Jul 2018 08:26
Last Modified: 03 Jul 2018 08:26
URI: http://ir.cftri.com/id/eprint/13565

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