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Cutting Edge: c-Kit Signaling Differentially Regulates Type 2 Innate Lymphoid Cell Accumulation and Susceptibility to Central Nervous System Demyelination in Male and Female SJL Mice

Abigail E. Russi, Margaret E. Walker-Caulfield, Mark E. Ebel and Melissa A. Brown
J Immunol May 13, 2015, 1500068; DOI: https://doi.org/10.4049/jimmunol.1500068
Abigail E. Russi
*Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611; and
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Margaret E. Walker-Caulfield
†Department of Neurology, Mayo Clinic, Rochester, MN 55905
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Mark E. Ebel
*Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611; and
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Melissa A. Brown
*Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611; and
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Abstract

Multiple sclerosis preferentially affects women, and this sexual dimorphism is recapitulated in the SJL mouse model of multiple sclerosis, experimental autoimmune encephalomyelitis (EAE). In this study, we demonstrate that signaling through c-Kit exerts distinct effects on EAE susceptibility in male and female SJL mice. Previous studies in females show that Kit mutant (W/Wv) mice are less susceptible to EAE than are wild-type mice. However, male W/Wv mice exhibit exacerbated disease, a phenotype independent of mast cells and corresponding to a shift from a Th2- to a Th17-dominated T cell response. We demonstrate a previously undescribed deficit in c-Kit+ type 2 innate lymphoid cells (ILC2s) in W/Wv mice. ILC2s are also significantly reduced in EAE-susceptible wild-type females, indicating that both c-Kit signals and undefined male-specific factors are required for ILC2 function. We propose that deficiencies in Th2-promoting ILC2s remove an attenuating influence on the encephalitogenic T cell response and therefore increases disease susceptibility.

Footnotes

  • This work was supported by National Institutes of Health Grant R21 NS081598-01 (to M.A.B.), National Multiple Sclerosis Society Grant RG-4684A5 (to M.A.B.), and by National Research Service Award Fellowship F31 NS084691-02 (to A.E.R.).

  • The online version of this article contains supplemental material.

  • Received January 14, 2015.
  • Accepted April 10, 2015.
  • Copyright © 2015 by The American Association of Immunologists, Inc.
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The Journal of Immunology: 209 (9)
The Journal of Immunology
Vol. 209, Issue 9
1 Nov 2022
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Cutting Edge: c-Kit Signaling Differentially Regulates Type 2 Innate Lymphoid Cell Accumulation and Susceptibility to Central Nervous System Demyelination in Male and Female SJL Mice
Abigail E. Russi, Margaret E. Walker-Caulfield, Mark E. Ebel, Melissa A. Brown
The Journal of Immunology May 13, 2015, 1500068; DOI: 10.4049/jimmunol.1500068

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Cutting Edge: c-Kit Signaling Differentially Regulates Type 2 Innate Lymphoid Cell Accumulation and Susceptibility to Central Nervous System Demyelination in Male and Female SJL Mice
Abigail E. Russi, Margaret E. Walker-Caulfield, Mark E. Ebel, Melissa A. Brown
The Journal of Immunology May 13, 2015, 1500068; DOI: 10.4049/jimmunol.1500068
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