Abstract
Inflammatory cytokine storms can trigger disease exacerbation and even death and have reached a consensus in the clinical treatment of acute organ failure. However, the existing strategies remain a great challenge to efficiently suppress inflammatory cytokine storms for promoting organ repair and regeneration. Herein, fully human umbilical cord (UC)-derived adhesive materials (UCAM) that integrate decellularized extracellular matrix (ECM) nanofiber hydrogel and homologous mesenchymal stem cells (MSCs) are demonstrated to greatly suppress inflammatory cytokine storms, demonstrating high efficacy in treating acute liver failure (ALF) in rats with 90% hepatectomy. The UC-derived adhesive materials have the capacity to secrete a significant quantity of cytokines by MSCs to recruit activated immune cells to migrate into their ECM nanofiber networks, segregating them away from the infection area and thereby greatly suppressing the inflammatory cytokine storms. As expected, the UC-derived adhesive materials can significantly promote hepatocyte proliferation to achieve functional recovery and regeneration of the liver, significantly improving the survival rate in rats. Our fully human UC-derived adhesive materials provide a new avenue in suppressing inflammatory cytokine storms for promoting organ regeneration that would be really utility in clinical organ transplantation-related treatment.
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