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Wnt signaling enhances macrophage responses to IL-4 and promotes resolution of atherosclerosis.

Ada Weinstock | Karishma Rahman | Or Yaacov | Hitoo Nishi | Prashanthi Menon | Cyrus A Nikain | Michela L Garabedian | Stephanie Pena | Naveed Akbar | Brian E Sansbury | Sean P Heffron | Jianhua Liu | Gregory Marecki | Dawn Fernandez | Emily J Brown | Kelly V Ruggles | Stephen A Ramsey | Chiara Giannarelli | Matthew Spite | Robin P Choudhury | P'ng Loke | Edward A Fisher
eLife | 2021

Atherosclerosis is a disease of chronic inflammation. We investigated the roles of the cytokines IL-4 and IL-13, the classical activators of STAT6, in the resolution of atherosclerosis inflammation. Using Il4-/-Il13-/- mice, resolution was impaired, and in control mice, in both progressing and resolving plaques, levels of IL-4 were stably low and IL-13 was undetectable. This suggested that IL-4 is required for atherosclerosis resolution, but collaborates with other factors. We had observed increased Wnt signaling in macrophages in resolving plaques, and human genetic data from others showed that a loss-of-function Wnt mutation was associated with premature atherosclerosis. We now find an inverse association between activation of Wnt signaling and disease severity in mice and humans. Wnt enhanced the expression of inflammation resolving factors after treatment with plaque-relevant low concentrations of IL-4. Mechanistically, activation of the Wnt pathway following lipid lowering potentiates IL-4 responsiveness in macrophages via a PGE2/STAT3 axis.

Pubmed ID: 33720008

Associated grants

  • Agency: NHLBI NIH HHS, United States
    Id: R01 HL106173
  • Agency: NHLBI NIH HHS, United States
    Id: F30 HL131183
  • Agency: NIGMS NIH HHS, United States
    Id: P01 GM095467
  • Agency: NIGMS NIH HHS, United States
    Id: T32 GM007308
  • Agency: American Heart Association-American Stroke Association, United States
    Id: 18POST34080390
  • Agency: NIAID NIH HHS, United States
    Id: T32 AI100853
  • Agency: British Heart Foundation, United Kingdom
    Id: PG/18/53/33895
  • Agency: NCATS NIH HHS, United States
    Id: UH2 TR002067
  • Agency: NHLBI NIH HHS, United States
    Id: K99 HL151963
  • Agency: NHLBI NIH HHS, United States
    Id: K23 HL135398
  • Agency: NIH HHS, United States
    Id: T32GM007308
  • Agency: NIAID NIH HHS, United States
    Id: R01 AI130945
  • Agency: NCATS NIH HHS, United States
    Id: UH3 TR002067
  • Agency: NHLBI NIH HHS, United States
    Id: F30HL131183
  • Agency: NHLBI NIH HHS, United States
    Id: T32 HL007824
  • Agency: NHLBI NIH HHS, United States
    Id: R03HL13528
  • Agency: NIAID NIH HHS, United States
    Id: R01 AI133977
  • Agency: NHLBI NIH HHS, United States
    Id: K99HL151963
  • Agency: NHLBI NIH HHS, United States
    Id: 5T23HL007824
  • Agency: NCATS NIH HHS, United States
    Id: R21 TR001739
  • Agency: NHLBI NIH HHS, United States
    Id: K23 HL111339
  • Agency: NHLBI NIH HHS, United States
    Id: R01 HL084312
  • Agency: NHLBI NIH HHS, United States
    Id: F32 HL136044

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This is a list of tools and resources that we have found mentioned in this publication.


SAMTOOLS (tool)

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