Issue 12, 2023

Armoring a liposome-integrated tissue factor with sacrificial CaCO3 to form potent self-propelled hemostats

Abstract

The development of hemostatic materials suitable for diverse emergency scenarios is of paramount significance, and there is growing interest in wound-site delivery of hemostasis-enhancing agents that can leverage the body's inherent mechanisms. Herein we report the design and performance of a biomimetic nanoparticle system enclosing tissue factor (TF), the most potent known blood coagulation trigger, which was reconstituted into liposomes and shielded by the liposome-templated CaCO3 mineralization. The mineral coatings, which mainly comprised water-soluble amorphous and vateritic phases, synergized with the lipidated TF to improve blood coagulation in vitro. These coatings served as sacrificial masks capable of releasing Ca2+ coagulation factors or propelling the TF-liposomes via acid-aided generation of CO2 bubbles while endowing them with high thermostability under dry conditions. In comparison to commercially available hemostatic particles, CaCO3 mineralized TF-liposomes yielded significantly shorter hemostasis times and less blood loss in vivo. When mixed with organic acids, the CO2-generating formulation further improved hemostasis by delivering TF-liposomes deep into actively bleeding wounds with good biocompatibility, as observed in a rat hepatic injury model. Therefore, the designed composite mimicry of coagulatory components exhibited strong hemostatic efficacy, which in combination with the propulsion mechanism would serve as a versatile approach to treating a variety of severe hemorrhages.

Graphical abstract: Armoring a liposome-integrated tissue factor with sacrificial CaCO3 to form potent self-propelled hemostats

  • This article is part of the themed collection: #MyFirstJMCB

Supplementary files

Article information

Article type
Paper
Submitted
08 Oct 2022
Accepted
21 Feb 2023
First published
21 Feb 2023

J. Mater. Chem. B, 2023,11, 2778-2788

Armoring a liposome-integrated tissue factor with sacrificial CaCO3 to form potent self-propelled hemostats

C. Liu, Z. Shi, J. Zhu, C. Liu, X. Liu, N. U. Khan, S. Liu, X. Wang, X. Wang and F. Huang, J. Mater. Chem. B, 2023, 11, 2778 DOI: 10.1039/D2TB02140D

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