Journal
CARBOHYDRATE POLYMERS
Volume 249, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.116860
Keywords
Tissue factor; Alginate; Procoagulant activity; Hemostatic property; Cytotoxicity
Categories
Funding
- Key Technology Research and Development Program of Shandong [2019GSF108159]
- China Postdoctoral Science Foundation [2014M560588, 2015T80756]
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Tissue factor (TF), an integral membrane protein, is by far the most potent known triggering agent of blood coagulation. Inspired by TF's effectiveness in initiating coagulation, this work aims to develop hemostatic materials with TF-integrated liposomes, which combined with alginate biopolymers are designed as composite pastes or hydrogels cross-linked with Ca2+. Fluorescence measurements revealed that the proteoliposomes were evenly distributed within alginate matrices, which also remained intact after release into simulated body fluid. The proteoliposome release rate from the composite pastes increased with the decrease of alginate concentration from 3% to 1%, or relative to the corresponding hydrogels. The latter also showed a swelling property. The combination with alginate enhanced TF procoagulant activity, and most importantly the resultant composites exhibited superior hemostatic performance, yielding a shortest blood clotting time of 1.5 min while untreated blood took 14.2 min to clot, with no cytotoxicity against mammalian cells.
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