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RAGE-mediated cell signaling.
Ari Rouhiainen1, Juha Kuja-Panula, Sarka Tumova
1Neuroscience Center, University of Helsinki, Helsinki, Finland. ari.rouhiainen@helsinki.fi
Methods in Molecular Biology (Clifton, N.J.)
|January 9, 2013
Summary
The receptor for advanced glycation end products (RAGE) binds diverse ligands. Structural studies reveal how RAGE recognizes these molecules, impacting cell signaling and function.
Area of Science:
- Molecular biology
- Cellular signaling
- Structural biology
Background:
- The receptor for advanced glycation end products (RAGE) is an immunoglobulin superfamily transmembrane protein.
- RAGE recognizes a wide array of ligands including advanced glycation end products (AGEs), HMGB1, S100 proteins, glycosaminoglycans, and amyloid β peptides.
- Structural biology approaches are elucidating common binding patterns among RAGE ligands.
Purpose of the Study:
- To understand the molecular mechanisms underlying RAGE ligand recognition.
- To explore the role of RAGE in cell signaling and transcriptional regulation.
- To investigate the physiological functions of RAGE beyond its known pathogenetic roles.
Main Methods:
- Structural biology techniques to analyze RAGE-ligand interactions.
- Cellular assays to study RAGE-mediated signaling pathways.
- Transcriptomic analysis to assess RAGE ligation effects on gene expression.
Main Results:
- A positively charged patch on the RAGE V1 domain fits anionic surfaces on ligands.
- RAGE association with itself, HSPGs, and Toll-like receptors is crucial for signaling.
- RAGE ligation activates signaling pathways regulating cell migration and gene transcription.
Conclusions:
- Structural insights reveal conserved binding mechanisms for diverse RAGE ligands.
- RAGE signaling influences cell migration and gene expression.
- Emerging evidence suggests physiological roles for RAGE in lung and neuronal function.
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