Mincle Signaling Promotes Con A Hepatitis

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Stephanie H Greco - , New York University (Author)
  • Alejandro Torres-Hernandez - , New York University (Author)
  • Aleksandr Kalabin - , New York University (Author)
  • Clint Whiteman - , New York University (Author)
  • Rae Rokosh - , New York University (Author)
  • Sushma Ravirala - , New York University (Author)
  • Atsuo Ochi - , New York University (Author)
  • Johana Gutierrez - , New York University (Author)
  • Muhammad Atif Salyana - , New York University (Author)
  • Vishnu R Mani - , New York University (Author)
  • Savitha V Nagaraj - , New York University (Author)
  • Michael Deutsch - , New York University (Author)
  • Lena Seifert - , Department of Visceral, Thoracic and Vascular Surgery, National Center for Tumor Diseases (Partners: UKD, MFD, HZDR, DKFZ), S. Arthur Localio Laboratory, New York University (Author)
  • Donnele Daley - , New York University (Author)
  • Rocky Barilla - , New York University (Author)
  • Mautin Hundeyin - , New York University (Author)
  • Yuriy Nikifrov - , New York University (Author)
  • Karla Tejada - , New York University (Author)
  • Bruce E Gelb - , New York University (Author)
  • Steven C Katz - , Roger Williams Medical Center (Author)
  • George Miller - , New York University (Author)

Abstract

Con A hepatitis is regarded as a T cell-mediated model of acute liver injury. Mincle is a C-type lectin receptor that is critical in the immune response to mycobacteria and fungi but does not have a well-defined role in preclinical models of non-pathogen-mediated inflammation. Because Mincle can ligate the cell death ligand SAP130, we postulated that Mincle signaling drives intrahepatic inflammation and liver injury in Con A hepatitis. Acute liver injury was assessed in the murine Con A hepatitis model using C57BL/6, Mincle(-/-), and Dectin-1(-/-) mice. The role of C/EBPβ and hypoxia-inducible factor-1α (HIF-1α) signaling was assessed using selective inhibitors. We found that Mincle was highly expressed in hepatic innate inflammatory cells and endothelial cells in both mice and humans. Furthermore, sterile Mincle ligands and Mincle signaling intermediates were increased in the murine liver in Con A hepatitis. Most significantly, Mincle deletion or blockade protected against Con A hepatitis, whereas Mincle ligation exacerbated disease. Bone marrow chimeric and adoptive transfer experiments suggested that Mincle signaling in infiltrating myeloid cells dictates disease phenotype. Conversely, signaling via other C-type lectin receptors did not alter disease course. Mechanistically, we found that Mincle blockade decreased the NF-κβ-related signaling intermediates C/EBPβ and HIF-1α, both of which are necessary in macrophage-mediated inflammatory responses. Accordingly, Mincle deletion lowered production of nitrites in Con A hepatitis and inhibition of both C/EBPβ and HIF-1α reduced the severity of liver disease. Our work implicates a novel innate immune driver of Con A hepatitis and, more broadly, suggests a potential role for Mincle in diseases governed by sterile inflammation.

Details

Original languageEnglish
Pages (from-to)2816-27
Number of pages12
JournalJournal of immunology (Baltimore, Md. : 1950)
Volume197
Issue number7
Publication statusPublished - 1 Oct 2016
Peer-reviewedYes

External IDs

PubMedCentral PMC5026929
Scopus 84989936188

Keywords

Sustainable Development Goals

Keywords

  • Animals, Concanavalin A/immunology, Disease Models, Animal, Hepatitis/immunology, Humans, Inflammation/immunology, Lectins, C-Type/deficiency, Leukocytes, Mononuclear, Male, Membrane Proteins/deficiency, Mice, Mice, Inbred BALB C, Mice, Inbred C57BL, Mice, Knockout, Nitrites/metabolism, Signal Transduction/immunology