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Selected cytokine pathways in rheumatoid arthritis
Mélissa Noack1, Pierre Miossec2
1Immunogenomics and Inflammation Research Unit EA 4130, Department of Immunology and Rheumatology, University of Lyon, 69437, Lyon, Cedex 03, France.
Seminars in Immunopathology
|February 19, 2017
Summary
Rheumatoid arthritis (RA) treatment targets key inflammatory cytokines like TNF and IL-6. New strategies focus on other cytokines (IL-1, IL-17, GM-CSF) and pathways to improve outcomes and address disease chronicity.
Area of Science:
- Immunology
- Rheumatology
- Pharmacology
Background:
- Rheumatoid arthritis (RA) is a chronic inflammatory condition characterized by joint destruction.
- Cytokines are central to RA pathogenesis, driving inflammation and offering therapeutic targets.
- Several cytokines, including TNF, IL-6, IL-1, IL-17, and GM-CSF, are implicated in RA.
Purpose of the Study:
- To review the role of critical cytokines in rheumatoid arthritis pathogenesis.
- To discuss current and emerging cytokine-targeted therapies for RA.
- To highlight future directions in RA treatment, focusing on cytokine signaling pathways.
Main Methods:
- Literature review of studies on cytokine involvement in rheumatoid arthritis.
- Analysis of established and novel therapeutic targets related to cytokines.
- Discussion of small molecule and bispecific antibody strategies targeting cytokine pathways.
Main Results:
- Tumor necrosis factor (TNF) and interleukin (IL)-6 are validated targets with new biologic agents available.
- Interleukin (IL)-1 targeting in humans has yielded less impressive results compared to animal models.
- Interleukin (IL)-17 and granulocyte-macrophage colony-stimulating factor (GM-CSF) represent emerging targets for early treatment or non-responders.
- Cytokine interactions and signaling pathways inform the development of novel therapeutic strategies.
Conclusions:
- Targeting cytokines has significantly advanced RA treatment.
- Challenges remain, including disease reactivation upon treatment cessation.
- Future research should focus on understanding and targeting RA chronicity for sustained remission.
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