Abstract:
:Acute graft-versus-host disease (GVHD) remains a major obstacle for the wider usage of allogeneic hematopoietic stem cell transplantation (allo-HSCT), which is an effective therapy for hematopoietic malignancy. Here we show that caspase-11, the cytosolic receptor for bacterial endotoxin (lipopolysaccharide: LPS), enhances GVHD severity. Allo-HSCT markedly increases the LPS-caspase-11 interaction, leading to the cleavage of gasdermin D (GSDMD). Caspase-11 and GSDMD mediate the release of interleukin-1α (IL-1α) in allo-HSCT. Deletion of Caspase-11 or Gsdmd, inhibition of LPS-caspase-11 interaction, or neutralizing IL-1α uniformly reduces intestinal inflammation, tissue damage, donor T cell expansion and mortality in allo-HSCT. Importantly, Caspase-11 deficiency does not decrease the graft-versus-leukemia (GVL) activity, which is essential to prevent cancer relapse. These findings have major implications for allo-HSCT, as pharmacological interference with the caspase-11 signaling might reduce GVHD while preserving GVL activity.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Lu Y,Meng R,Wang X,Xu Y,Tang Y,Wu J,Xue Q,Yu S,Duan M,Shan D,Wang Q,Wang H,Billiar TR,Xiao X,Chen F,Lu Bdoi
10.1038/s41467-019-11895-2subject
Has Abstractpub_date
2019-09-06 00:00:00pages
4044issue
1issn
2041-1723pii
10.1038/s41467-019-11895-2journal_volume
10pub_type
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