Cited by 264Cytokine Signaling Pathways and InteractionsImmune Response and InflammationNF-κB Signaling Pathways

IL-6 Trans-Signaling Modulates TLR4-Dependent Inflammatory Responses via STAT3

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Greenhill, Claire J, Rose-John, Stefan, Lissilaa, Rami, Ferlin, Walter, Ernst, Matthias, Hertzog, Paul J, Mansell, Ashley, Jenkins, Brendan J·2011·The Journal of Immunology

Abstract

Innate immune responses triggered by the prototypical inflammatory stimulus LPS are mediated by TLR4 and involve the coordinated production of a multitude of inflammatory mediators, especially IL-6, which signals via the shared IL-6 cytokine family receptor subunit gp130. However, the exact role of IL-6, which can elicit either proinflammatory or anti-inflammatory responses, in the pathogenesis of TLR4-driven inflammatory disorders, as well as the identity of signaling pathways activated by IL-6 in a proinflammatory state, remain unclear. To define the contribution of gp130 signaling events to TLR4-driven inflammatory responses, we combined genetic and therapeutic approaches based on a series of gp130(F/F) knock-in mutant mice displaying hyperactivated IL-6-dependent JAK/STAT signaling in an experimental model of LPS/TLR4-mediated septic shock. The gp130(F/F) mice were markedly hypersensitive to LPS, which was associated with the specific upregulated production of IL-6, but not TNF-α. In gp130(F/F) mice, either genetic ablation of IL-6, Ab-mediated inhibition of IL-6R signaling or therapeutic blockade of IL-6 trans-signaling completely protected mice from LPS hypersensitivity. Furthermore, genetic reduction of STAT3 activity in gp130(F/F):Stat3(+/-) mice alleviated LPS hypersensitivity and reduced LPS-induced IL-6 production. Additional genetic approaches demonstrated that the TLR4/Mal pathway contributed to LPS hypersensitivity and increased IL-6 production in gp130(F/F) mice. Collectively, these data demonstrate for the first time, to our knowledge, that IL-6 trans-signaling via STAT3 is a critical modulator of LPS-driven proinflammatory responses through cross-talk regulation of the TLR4/Mal signaling pathway, and potentially implicate cross-talk between JAK/STAT and TLR pathways as a broader mechanism that regulates the severity of the host inflammatory response.

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Crossref · 10.4049/jimmunol.1002971

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  • The absolute level of IL6 detected fell in the middle range of reported levels in inflammatory contexts and above reported ranges post-exercise and diet-induced obesity.

    “The absolute level of IL6 we detected fell in the middle range of reported levels (50 pg/mL to 200 ng/mL) in inflammatory contexts and above reported ranges post-exercise and diet-induced obesity (30-100 pg/mL) (Chowdhury et al.; Gao et al., 2014; Greenhill et al., 2011; Masuda et al., 2013; Osuchowski et al., 2006; Remick et al., 2005; Vida et al.; Wang et al., 2017; Yan et al., 2015).”

    From Origin and function of stress-induced IL-6 in murine models (2020) · cites this paper as Greenhill et al., 2011

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Authors
Greenhill, C. J., Rose-John, S., Lissilaa, R., Ferlin, W., Ernst, M., Hertzog, P. J., Mansell, A., & Jenkins, B. J.
Affiliations
  • Monash University (AU)
  • Institute of Biochemistry, Christian-Albrechts-University of Kiel , Kiel ,
  • Light Chain Bioscience (Switzerland) (CH)
  • Ludwig Cancer Research (BE)
Corresponding author
Mansell, Ashley
Venue
The Journal of Immunology
Published
2011-01
Volume
186
Issue
2
Pages
1199-1208
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1904816508
Cited by
264
References
53
Citations by year
2026: 6 · 2025: 9 · 2024: 26 · 2023: 16 · 2022: 17 · 2021: 21 · 2020: 28 · 2019: 13 · 2018: 16 · 2017: 26 · 2016: 16 · 2015: 18 · 2014: 13 · 2013: 12 · 2012: 14
FWCI
6.16
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft (SFB 877)
  • Monash University
  • Exzellenzclusters Entzündungsforschung
  • Medical Research Council
  • National Health and Medical Research Council
Topics
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
Keywords
IL-6 trans-signaling, TLR4, STAT3, gp130, lipopolysaccharide, septic shock, JAK/STAT signaling, innate immunity, inflammation, IL-6 receptor, signaling crosstalk
MeSH terms
Animals, Cells, Cultured, Cricetulus, Cricetinae, Male, Membrane Glycoproteins, Mice, Transgenic, Shock, Septic, Signal Transduction, Interleukin-6, Up-Regulation, CHO Cells, Rats, Wistar, Receptors, Interleukin-1, Mice, Knockout, Inflammation Mediators, STAT3 Transcription Factor, Cytokine Receptor gp130, Toll-Like Receptor 4, Mice, Rats, Myeloid Differentiation Factor 88, Gene Knock-In Techniques

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