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- W4200273818 abstract "Activation of antigen-presenting cells (APCs) is crucial in initiating inflammation and alloreaction during acute graft-versus-host disease (aGVHD), a common life-threatening complication of allogeneic hematopoietic cell transplantation (allo-HCT). IL-1 receptor-associated kinase 1 (IRAK1) regulates the activation of APCs in inflammatory settings, and inhibition of IRAK1 might decrease APC activation and aGVHD. This study was conducted to explore the impact of IRAK1 inhibition on APC activation and aGVHD in mice. We administered a selective IRAK1 inhibitor, Jh-X-119-01, to recipient mice undergoing allo-HCT or co-challenged by A20 lymphoma cells. We assessed aGVHD and the graft-versus-lymphoma (GVL) effect. T cell and APC activations were analyzed as well. Jh-X-119-01 was associated with increased survival and decreased aGVHD of recipients. Jh-X-119-01 decreased the proportions of Th1 cells and Tc1 cells in the aGVHD model and in the in vitro mixed lymphocyte reaction. The IRAK1 inhibitor reduced production of TNFα and IFNγ in macrophages of recipient mice. In in vitro cultured bone marrow dendritic cells (BMDCs), Jh-X-119-01 decreased productions of inflammatory cytokines, reduced expression levels of CD80 and CD86, and decreased protein levels of antiapoptotic Bcl2 and phosphorylated NF-κB p65. RNA-seq analysis showed that Jh-X-119-01 had an impact on several pathophysiologic processes of BMDCs, including reduction of GVHD-related genes and regulation of helper T cell differentiation. Importantly, IRAK1 inhibition did not impair cytotoxic function of T cells or the allo-HCT-related GVL effect against A20 lymphoma cells. In addition, the IRAK1 inhibitor did not retard recovery of hematopoietic cells in blood or bone marrow. Our findings show that selective IRAK1 inhibition ameliorates murine aGVHD but preserves the GVL effect. Our findings may have implications for the use of an IRAK1 inhibitor in allo-HCT." @default.
- W4200273818 created "2021-12-31" @default.
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- W4200273818 date "2022-03-01" @default.
- W4200273818 modified "2023-09-25" @default.
- W4200273818 title "Inhibition of IL-1 Receptor-Associated Kinase 1 Decreases Murine Acute Graft-versus-Host Disease While Preserving the Graft-versus-Lymphoma Effect" @default.
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- W4200273818 doi "https://doi.org/10.1016/j.jtct.2021.12.001" @default.
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