1. IL-6 and IL-27 play both distinct and redundant roles in regulating CD4 T-cell responses during chronic viral infection.
- Author
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Harker JA, Greene TT, Barnett BE, Bao P, Dolgoter A, and Zuniga EI
- Subjects
- Mice, Animals, CD4-Positive T-Lymphocytes, Interleukin-6 metabolism, Cytokine Receptor gp130 genetics, Cytokine Receptor gp130 metabolism, Persistent Infection, Lymphocytic choriomeningitis virus, Receptors, Cytokine genetics, Interleukin-27 metabolism, Lymphocytic Choriomeningitis
- Abstract
The IL-6 cytokine family signals through the common signal transduction molecule gp130 combined with a cytokine-specific receptor. Gp130 signaling on CD4 T cells is vital in controlling chronic infection of mice with lymphocytic choriomeningitis virus clone 13 (LCMV Cl13), but the precise role of individual members of the IL-6 cytokine family is not fully understood. Transcriptional analysis highlighted the importance of gp130 signaling in promoting key processes in CD4 T cells after LCMV Cl13 infection, particularly genes associated with T follicular helper (Tfh) cell differentiation and IL-21 production. Further, Il27r
-/- Il6ra-/- mice failed to generate antibody or CD8 T-cell immunity and to control LCMV Cl13. Transcriptomics and phenotypic analyses of Il27r-/- Il6ra-/- Tfh cells revealed that IL-6R and IL-27R signaling was required to activate key pathways within CD4 T cells. IL-6 and IL-27 signaling has distinct and overlapping roles, with IL-6 regulating Tfh differentiation, IL-27 regulating CD4 T cell survival, and both redundantly promoting IL-21., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Harker, Greene, Barnett, Bao, Dolgoter and Zuniga.)- Published
- 2023
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