Document Type
Article
Publication Date
5-4-2020
Abstract
Despite increasing recognition of the importance of GM-CSF in autoimmune disease, it remains unclear how GM-CSF is regulated at sites of tissue inflammation. Using GM-CSF fate reporter mice, we show that synovial NK cells produce GM-CSF in autoantibody-mediated inflammatory arthritis. Synovial NK cells promote a neutrophilic inflammatory cell infiltrate, and persistent arthritis, via GM-CSF production, as deletion of NK cells, or specific ablation of GM-CSF production in NK cells, abrogated disease. Synovial NK cell production of GM-CSF is IL-18–dependent. Furthermore, we show that cytokine-inducible SH2-containing protein (CIS) is crucial in limiting GM-CSF signaling not only during inflammatory arthritis but also in experimental allergic encephalomyelitis (EAE), a murine model of multiple sclerosis. Thus, a cellular cascade of synovial macrophages, NK cells, and neutrophils mediates persistent joint inflammation via production of IL-18 and GM-CSF. Endogenous CIS provides a key brake on signaling through the GM-CSF receptor. These findings shed new light on GM-CSF biology in sterile tissue inflammation and identify several potential therapeutic targets.
Recommended Citation
Louis, Cynthia; Souza-Fonseca-Guimaraes, Fernando; Yang, Yuyan; D'Silva, Damian; Kratina, Tobias; Dagley, Laura; Hediyeh-Zadeh, Soroor; Rautela, Jai; Masters, Seth Lucian; Davis, Melissa J; Babon, Jeffrey J; Ciric, Bogoljub; Vivier, Eric; Alexander, Warren S; Huntington, Nicholas D; and Wicks, Ian P, "NK cell-derived GM-CSF potentiates inflammatory arthritis and is negatively regulated by CIS" (2020). Department of Neurology Faculty Papers. Paper 245.
https://jdc.jefferson.edu/neurologyfp/245
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License.
PubMed ID
32097462
Language
English
Comments
This article is the author’s final published version in Journal of Experimental Medicine, Volume 217, Issue 5, May 2020, Article number e20191421.
The published version is available at https://doi.org/10.1084/jem.20191421. Copyright © Loius et al.