Journal
FRONTIERS IN IMMUNOLOGY
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2018.01565
Keywords
type-I interferons; interleukin-10 signaling; T lymphocytes; type 1 diabetes; nonobese diabetic mice
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Funding
- American Diabetes Association Junior Faculty Award [1-10-JF-43]
- Starzl Transplantation Institute Joseph Patrick Fellowship
- Baltimore Diabetes Research Center, an American Association of Immunologists Careers in Immunology Fellowship
- JDRF [2-SRA-2016-304-S-B]
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Destruction of insulin-producing beta-cells by autoreactive T lymphocytes leads to the development of type 1 diabetes. Type-I interferons (TI-IFN) and interleukin-10 (IL-10) have been connected with the pathophysiology of this disease; however, their interplay in the modulation of diabetogenic T cells remains unknown. We have discovered that TI-IFN cause a selective inhibition of IL-10 signaling in effector and regulatory T cells, altering their responses. This correlates with diabetes development in nonobese diabetic mice, where the inhibition is also spatially localized to T cells of pancreatic and mesenteric lymph nodes. IL-10 signaling inhibition is reversible and can be restored via blockade of TI-IFN/IFN-R interaction, paralleling with the resulting delay in diabetes onset and reduced severity. Overall, we propose a novel molecular link between TI-IFN and IL-10 signaling that helps better understand the complex dynamics of autoimmune diabetes development and reveals new strategies of intervention.
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