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Is there an interaction between interleukin-10 and interleukin-22?
1Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology, University Hospital Charité, D-10117 Berlin, Germany.
Genes and Immunity
|November 5, 2004
Summary
Interleukin-10 (IL-10) and Interleukin-22 (IL-22) do not modulate each other's effects, despite being present during inflammation. Competition for the common IL-10R2 receptor chain was investigated but not observed between these cytokines.
Area of Science:
- Immunology
- Molecular Biology
- Cell Signaling
Background:
- Interleukin-10 (IL-10) and Interleukin-22 (IL-22) are related cytokines with distinct anti- and pro-inflammatory roles, respectively.
- Both cytokines are simultaneously present during systemic and local inflammation.
- Their receptors share a common chain (IL-10R2) but have unique specific chains (IL-10R1 and IL-22R1).
Purpose of the Study:
- To investigate potential interactions and modulations between IL-10 and IL-22 signaling pathways.
- To determine if IL-10 and IL-22 compete for the common IL-10R2 receptor chain.
Main Methods:
- Assessing cytokine effects on monocytes and hepatocytes.
- Verifying the dependence of cytokine action on the IL-10R2 chain.
- Investigating interactions with native cytokines and cytokine-derived peptides.
Main Results:
- No influence of IL-22 on IL-10 effects was observed, even with IL-22-binding protein.
- No influence of IL-10 on IL-22 action was detected.
- Lack of competition suggests native cytokines do not bind IL-10R2 without their specific R1 chain.
Conclusions:
- IL-10 and IL-22 do not directly modulate each other's biological effects.
- The hypothesis that binding to the specific R1 chain creates the IL-10R2 binding site is supported.
- This finding clarifies the independent signaling of these related cytokines in inflammatory contexts.
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