Cited by 155Acute Myeloid Leukemia ResearchHematopoietic Stem Cell TransplantationNF-κB Signaling Pathways

Adaptive response to inflammation contributes to sustained myelopoiesis and confers a competitive advantage in myelodysplastic syndrome HSCs

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Muto, Tomoya, Walker, Callum S., Choi, Kwangmin, Hueneman, Kathleen, Smith, Molly A., Gul, Zartash, Garcia-Manero, Guillermo, Ma, Averil +2 more·2020·Nature Immunology

Abstract

Despite evidence of chronic inflammation in myelodysplastic syndrome (MDS) and cell-intrinsic dysregulation of Toll-like receptor (TLR) signaling in MDS hematopoietic stem and progenitor cells (HSPCs), the mechanisms responsible for the competitive advantage of MDS HSPCs in an inflammatory milieu over normal HSPCs remain poorly defined. Here, we found that chronic inflammation was a determinant for the competitive advantage of MDS HSPCs and for disease progression. The cell-intrinsic response of MDS HSPCs, which involves signaling through the noncanonical NF-κB pathway, protected these cells from chronic inflammation as compared to normal HSPCs. In response to inflammation, MDS HSPCs switched from canonical to noncanonical NF-κB signaling, a process that was dependent on TLR-TRAF6-mediated activation of A20. The competitive advantage of TLR-TRAF6-primed HSPCs could be restored by deletion of A20 or inhibition of the noncanonical NF-κB pathway. These findings uncover the mechanistic basis for the clonal dominance of MDS HSPCs and indicate that interfering with noncanonical NF-κB signaling could prevent MDS progression.

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  • Tet2-deficient HSPCs exhibit a TLR-TRAF6A and noncanonical NF-κB-dependent competitive advantage during low-grade inflammation.

    “and exhibit a toll-like receptor–TNF receptor associated factor 6A (TLR-TRAF6A) and noncanonical NF-κB–dependent competitive advantage during low-grade inflammation.17”

    From Aging drives <i>Tet2</i> <i>+/−</i> clonal hematopoiesis via IL-1 signaling (2023) · cites this paper as [17]

    The Results section on TET2-deficient HSPCs (page unavailable) reports increased myeloid contribution after competitive transplantation under low-dose LPS, preservation of Tet2-deficient HSPCs, and TRAF6-dependent activation of noncanonical NF-κB. It does not establish that the competitive advantage of Tet2-deficient HSPCs itself depends on noncanonical NF-κB; the long-term competitive-advantage experiment in the separate TLR–TRAF6-primed HSPCs section used TRAF6-overexpressing cells. (LLM, conf=0.85)

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Authors
Muto, T., Walker, C. S., Choi, K., Hueneman, K., Smith, M. A., Gul, Z., Garcia-Manero, G., Ma, A., Zheng, Y., & Starczynowski, D. T.
Affiliations
  • Cincinnati Children's Hospital Medical Center (US)
  • University of Cincinnati (US)
  • University of California, San Francisco (US)
Corresponding author
Starczynowski, Daniel T.
Venue
Nature Immunology
Published
2020-04-20
Volume
21
Issue
5
Pages
535-545
ISSN
  • 1529-2908 (ISSN-L)
  • 1529-2916
OpenAlex
W3017327186
Cited by
155
References
59
Citations by year
2026: 11 · 2025: 21 · 2024: 30 · 2023: 24 · 2022: 24 · 2021: 28 · 2020: 16 · 2014: 1
FWCI
14.53
Type
journal article
Language
en
Open access
Locations
  • Nature Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Heart, Lung, and Blood Institute (R35HL135787)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK102759, R01DK113639)
Topics
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
Keywords
myelodysplastic syndrome, hematopoietic stem and progenitor cells, chronic inflammation, non-canonical NF-κB signaling, Toll-like receptor signaling, TRAF6, A20, clonal dominance, myelopoiesis, disease progression, competitive advantage
MeSH terms
Tumor Necrosis Factor alpha-Induced Protein 3, Aged, Animals, Cell Differentiation, Cells, Cultured, Hematopoietic Stem Cells, Humans, Inflammation, Male, Mice, Transgenic, Myelodysplastic Syndromes, Signal Transduction, NF-kappa B, Myelopoiesis, TNF Receptor-Associated Factor 6, Toll-Like Receptors, Mice

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