Receptor for AGE (RAGE): weaving tangled webs within the inflammatory response
Raphael Clynes1, Bernhard Moser, Shi Fang Yan
1Division of Surgical Science, Department of Surgery, Columbia University Medical Center, 630 West 168th Street, P&S 17-501, New York, NY 10032, USA.
Current Molecular Medicine
|March 12, 2008
Summary
The Receptor for Advanced Glycation Endproducts (RAGE) pathway is crucial in inflammation and autoimmunity. Understanding RAGE
Area of Science:
- Immunology and Inflammation Research
- Molecular Biology and Receptor Signaling
- Autoimmunity and Disease Pathogenesis
Background:
- Receptor for Advanced Glycation Endproducts (RAGE) ligands are concentrated in inflammatory sites.
- RAGE is upregulated in various inflammatory and autoimmune conditions.
- RAGE ligands, like S100/calgranulins, were initially disease biomarkers.
Purpose of the Study:
- To investigate the role of the RAGE ligand-receptor axis in inflammation and autoimmunity.
- To elucidate how RAGE signaling influences immune cell targeting and inflammatory responses.
- To differentiate the roles of RAGE in acute injury versus chronic disease progression.
Main Methods:
- Analysis of human tissues and animal models to study RAGE expression and function.
- Examination of RAGE ligand-receptor interactions in inflammatory and vascular cells.
- Investigating the impact of RAGE stimulation on cellular migration and inflammatory mediator production.
Main Results:
- RAGE ligands (AGEs, S100, HMGB1, Abeta) are enriched in immune foci.
- Ligand-RAGE engagement amplifies inflammatory cytokines, adhesion molecules, and MMPs.
- RAGE plays a key role in immune cell migration to inflammatory sites.
Conclusions:
- The RAGE axis is integral to immune responses and disease pathogenesis.
- The location and timing of RAGE stimulation dictate its functional outcome.
- Further characterization of RAGE is needed to distinguish its roles in tissue repair versus injury.
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