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TGFβ reprograms TNF stimulation of macrophages towards a non-canonical pathway driving inflammatory osteoclastogenesis

Author

Listed:
  • Yuhan Xia

    (Arthritis and Tissue Degeneration Program and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery
    Weill Cornell Medical College
    Central South University)

  • Kazuki Inoue

    (Arthritis and Tissue Degeneration Program and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery
    Weill Cornell Medical College)

  • Yong Du

    (Arthritis and Tissue Degeneration Program and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery)

  • Stacey J. Baker

    (Icahn School of Medicine at Mount Sinai)

  • E. Premkumar Reddy

    (Icahn School of Medicine at Mount Sinai)

  • Matthew B. Greenblatt

    (Pathology and Laboratory Medicine, Weill Cornell Medical College
    Research Institute, Hospital for Special Surgery)

  • Baohong Zhao

    (Arthritis and Tissue Degeneration Program and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery
    Weill Cornell Medical College
    Graduate Program in Cell and Development Biology, Weill Cornell Graduate School of Medical Sciences)

Abstract

It is well-established that receptor activator of NF-κB ligand (RANKL) is the inducer of physiological osteoclast differentiation. However, the specific drivers and mechanisms driving inflammatory osteoclast differentiation under pathological conditions remain obscure. This is especially true given that inflammatory cytokines such as tumor necrosis factor (TNF) demonstrate little to no ability to directly drive osteoclast differentiation. Here, we found that transforming growth factor β (TGFβ) priming enables TNF to effectively induce osteoclastogenesis, independently of the canonical RANKL pathway. Lack of TGFβ signaling in macrophages suppresses inflammatory, but not basal, osteoclastogenesis and bone resorption in vivo. Mechanistically, TGFβ priming reprograms the macrophage response to TNF by remodeling chromatin accessibility and histone modifications, and enables TNF to induce a previously unrecognized non-canonical osteoclastogenic program, which includes suppression of the TNF-induced IRF1-IFNβ-IFN-stimulated-gene axis, IRF8 degradation and B-Myb induction. These mechanisms are active in rheumatoid arthritis, in which TGFβ level is elevated and correlates with osteoclast activity. Our findings identify a TGFβ/TNF-driven inflammatory osteoclastogenic program, and may lead to development of selective treatments for inflammatory osteolysis.

Suggested Citation

  • Yuhan Xia & Kazuki Inoue & Yong Du & Stacey J. Baker & E. Premkumar Reddy & Matthew B. Greenblatt & Baohong Zhao, 2022. "TGFβ reprograms TNF stimulation of macrophages towards a non-canonical pathway driving inflammatory osteoclastogenesis," Nature Communications, Nature, vol. 13(1), pages 1-21, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31475-1
    DOI: 10.1038/s41467-022-31475-1
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    References listed on IDEAS

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    1. Upneet K. Sokhi & Mark P. Liber & Laura Frye & Sungho Park & Kyuho Kang & Tania Pannellini & Baohong Zhao & Rada Norinsky & Lionel B. Ivashkiv & Shiaoching Gong, 2018. "Dissection and function of autoimmunity-associated TNFAIP3 (A20) gene enhancers in humanized mouse models," Nature Communications, Nature, vol. 9(1), pages 1-15, December.
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