Structural Features and Anti-coagulant Activity of the Sulphated Polysaccharide SPS-CF from a Green Alga Capsosiphon fulvescens

0453455 - ÚOCHB 2016 RIV US eng J - Journal Article
Synytsya, A. - Choi, D. J. - Pohl, Radek - Na, Y. S. - Capek, P. - Lattová, E. - Taubner, T. - Choi, J. W. - Lee, C. W. - Park, J. K. - Kim, W. J. - Kim, S. M. - Lee, J. - Park, Y. I.
Structural Features and Anti-coagulant Activity of the Sulphated Polysaccharide SPS-CF from a Green Alga Capsosiphon fulvescens.
Marine Biotechnology. Roč. 17, č. 6 (2015), s. 718-735. ISSN 1436-2228. E-ISSN 1436-2236
Institutional support: RVO:61388963
Keywords : alga Maesaengi (Capsosiphon fulvescens) * ulvan * monosaccharide composition * structure * anti-coagulant activity
Subject RIV: EI - Biotechnology ; Bionics
Impact factor: 3.062, year: 2015

Previously, we reported that the sulphated polysaccharides (SPS)-CF, a water-soluble polysaccharide isolated and purified from Korean green alga Maesaengi (Capsosiphon fulvescens, Chlorophyta), is a glucuronogalactomannan based mainly on the monosaccharide composition determined by high-performance liquid chromatography (HPLC) analysis after 1-phenyl-3-methyl-5-pyrazolone (PMP) labelling of sugars in the acid (trifluoroacetic acid (TFA)) hydrolyzates of SPS-CF, which showed mannose (55.4 mol %), galactose (25.3 mol %) and glucuronic acid (16.3 mol %) as major sugars (Na et al., Int Immunopharmacol 10:364-370, 2010). However, the results of the present study re-performed for monosaccharide composition of this polysaccharide using, in addition to HPLC of PMP-labelled sugars, other separation methods, i.e. high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD), gas chromatography with flame ionising detection (GC-FID) and thin-layer chromatography (TLC), clearly demonstrated that the most prominent neutral monosaccharides of SPS-CF are xylose (38.6-49.4 mol %) and rhamnose (39.6-45 mol %), while mannose and galactose are present at a much lesser extent or in negligible amount. These extensive monosaccharide analyses, correlation nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS) and matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) measurements confirmed the sulphated glucuronorhamnoxylan (ulvan) type of SPS-CF polysaccharide, whose backbone is composed of alternating sequence of 4-linked l-rhamnose-3-sulphate and d-xylose residues (ulvobiose U-3s) carrying monomeric d-glucuronic acid or d-glucuronic acid-3-sulphate on O-2 of some l-rhamnose-3-sulphate units as the side chains. The SPS-CF exhibited significant in vitro anti-coagulant activity by which the activated partial thromboplastin time (aPTT) and thrombin time (TT) were significantly prolonged.
Permanent Link: http://hdl.handle.net/11104/0254267