Sulfation of furcellaran and its effect on hemocompatibility in vitro
Language English Country Netherlands Media print-electronic
Document type Journal Article
PubMed
38103479
DOI
10.1016/j.ijbiomac.2023.128840
PII: S0141-8130(23)05739-2
Knihovny.cz E-resources
- Keywords
- Anticoagulant, Furcellaran, Hemocompatibility, Platelet adhesion, Seaweed polysaccharide, Sulfation,
- MeSH
- Alginates * MeSH
- Anticoagulants * pharmacology MeSH
- Blood Coagulation * MeSH
- Sulfonic Acids * MeSH
- Partial Thromboplastin Time MeSH
- Plant Gums * MeSH
- Sulfates chemistry MeSH
- Spectroscopy, Fourier Transform Infrared MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- Alginates * MeSH
- Anticoagulants * MeSH
- chlorosulfonic acid MeSH Browser
- furcellaran MeSH Browser
- Sulfonic Acids * MeSH
- Plant Gums * MeSH
- Sulfates MeSH
In this study, furcellaran (FUR) obtained from Furcellaria lumbricalis was firstly employed for sulfation via various methods, including SO3-pyridine (SO3∙Py) complex in different aprotic solvents, chlorosulfonic acid and sulfuric acid with a "coupling" reagent N,N'-Dicyclohexylcarbodiimide. Structural characterization through FT-IR, GPC, XPS and elemental analyses confirmed the successful synthesis of 6-O-sulfated FUR derivates characterized by varying degrees of sulfation (DS) ranging from 0.15 to 0.91 and molecular weight (Mw) spanning from12.5 kDa to 2.7 kDa. In vitro clotting assays, partial thromboplastin time (aPTT), thrombin time (TT), and prothrombin time (PT) underscored the essential role of sulfate esters in conferring anticoagulant activity whereas FUR prepared via chlorosulfonic acid with DS of 0.91 reached 311.4 s in aPPT showing almost 4-fold higher anticoagulant activity than native FUR at the concentration 2 mg/mL. MTT test showed all tested samples decreased cell viability in a dose dependent manner while all of them are non-cytotoxic up to the concentration of 0.1 mg/mL. Furthermore, sulfated derivates deposited onto polyethylene terephthalate surface presented substantial decrease in platelet adhesion, as well as absence of the most activated platelet stages. These findings support the pivotal role of O-6 FUR sulfates in enhancing hemocompatibility and provide valuable insights for a comparative assessment of effective sulfating approaches.
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