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| Structural Characterization and Anticoagulant Activities of a Keratan Sulfate-like Polysaccharide from the Sea Cucumber Holothuria fuscopunctata | |
Chen,Ru; Wang,Weili; Yin,Ronghua; Pan,Ying; Xu,Chen; Gao,Na; Luo,Xiaodong ; Zhao,Jinhua; Reyes,Fernando
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| 2023 | |
| Source Publication | MARINE DRUGS
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| ISSN | 1660-3397 |
| Volume | 21Issue:12Pages:632 |
| Abstract | A sulfated polysaccharide (AG) was extracted and isolated from the sea cucumber H. fuscopunctata, consisting of GlcNAc, GalNAc, Gal, Fuc and lacking any uronic acid residues. Importantly, several chemical depolymerization methods were used to elucidate the structure of the AG through a bottom-up strategy. A highly sulfated galactose (oAG-1) and two disaccharides labeled with 2,5-anhydro-D-mannose (oAG-2, oAG-3) were obtained from the deaminative depolymerized product along with the structures of the disaccharide derivatives (oAG-4 similar to oAG-6) identified from the free radical depolymerized product, suggesting that the repeating building blocks in a natural AG should comprise the disaccharide beta-D-GalS-1,4-D-GlcNAc(6S). The possible disaccharide side chains (bAG-1) were obtained with mild acid hydrolysis. Thus, a natural AG may consist of a keratan sulfate-like (KS-like) glycosaminoglycan with diverse modifications, including the sulfation types of the Gal residue and the possible disaccharide branches alpha-D-GalNAc(4S6S)-1,2-alpha/beta-L-Fuc(3S) linked to the KS-like chain. Additionally, the anticoagulant activities of the AG and its depolymerized products (dAG1-9) were evaluated in vitro using normal human plasma. The AG could prolong activated partial thromboplastin time (APTT) in a dose-dependent manner, and the activity potency was positively related to the chain length. The AG and dAG1-dAG3 could prolong thrombin time (TT), while they had little effect on prothrombin time (PT). The results indicate that the AG could inhibit the intrinsic and common coagulation pathways. |
| Keyword | aminoglycan structural features keratan sulfate depolymerization oligosaccharides anticoagulant activity INTRINSIC-FACTOR XASE GLYCOSAMINOGLYCAN OLIGOSACCHARIDES DEPOLYMERIZATION ELUCIDATION DERIVATIVES HEPARIN |
| Subject Area | 376 |
| DOI | 10.3390/md21120632 |
| WOS ID | WOS:001132314500001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.kib.ac.cn/handle/151853/75032 |
| Collection | 中国科学院昆明植物研究所 |
| Recommended Citation GB/T 7714 | Chen,Ru,Wang,Weili,Yin,Ronghua,et al. Structural Characterization and Anticoagulant Activities of a Keratan Sulfate-like Polysaccharide from the Sea Cucumber Holothuria fuscopunctata[J]. MARINE DRUGS,2023,21(12):632. |
| APA | Chen,Ru.,Wang,Weili.,Yin,Ronghua.,Pan,Ying.,Xu,Chen.,...&Reyes,Fernando.(2023).Structural Characterization and Anticoagulant Activities of a Keratan Sulfate-like Polysaccharide from the Sea Cucumber Holothuria fuscopunctata.MARINE DRUGS,21(12),632. |
| MLA | Chen,Ru,et al."Structural Characterization and Anticoagulant Activities of a Keratan Sulfate-like Polysaccharide from the Sea Cucumber Holothuria fuscopunctata".MARINE DRUGS 21.12(2023):632. |
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| 10.3390_md21120632.p（6775KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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