Publication details

Sulfation of furcellaran and its effect on hemocompatibility in vitro

Authors

ŠTĚPÁNKOVÁ Kateřina OZALTIN Kadir GOREJOVÁ Radka DOUDOVÁ Hana BERGEROVÁ Eva MASKALOVÁ Iveta STUPAVSKÁ Monika SŤAHEL Pavel TRUNEC David PELKOVÁ Jana MOZETIČ Miran LEHOCKÝ Marián

Year of publication 2024
Type Article in Periodical
Magazine / Source International journal of biological macromolecules
MU Faculty or unit

Faculty of Science

Citation
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85179757931&doi=10.1016%2fj.ijbiomac.2023.128840&partnerID=40&md5=97d93c2318f6f237be724461ad620fd2
Doi http://dx.doi.org/10.1016/j.ijbiomac.2023.128840
Keywords Anticoagulant; Furcellaran; Hemocompatibility; Platelet adhesion; Seaweed polysaccharide; Sulfation
Description 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 from12.5kDa to 2.7kDa. 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 311.4s in aPPT showing almost 4-fold higher anticoagulant activity than native FUR at the concentration 2mg/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 0.1mg/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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