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Galanin receptor 1 (GalR1) and Galanin receptor 2 (GalR2) (GalR1, GalR2)
- Target
- GalR1, GalR2
- Molecular classification
- G protein-coupled receptor, Receptor
01
Overview
Galanin receptor 1 and Galanin receptor 2 are members of the G protein-coupled receptor family that bind the neuropeptide galanin. They mediate diverse cellular outcomes, including induction of adipogenesis by activating MAPK and cAMP signaling pathways, often resulting in adipocyte differentiation, modulation of energy metabolism, and apoptosis. Galanin-mediated signaling through these receptors is upregulated in diet-induced obesity and is implicated in both adipose tissue expansion and the suppression of thermogenesis. These receptors represent potential therapeutic targets for metabolic disorders, neurodegenerative disease, and obesity[1][2].
- Other names
- GalR1GalR2galanin receptor type 1galanin receptor type 2
02
Mechanism of action
Activation or inhibition of galanin receptors modulates signaling pathways such as MAPK and PI3K/AKT, affecting adipocyte differentiation and apoptosis
03
Biological functions
Signal transductionRegulation of adipogenesis (fat cell differentiation)Apoptosis inductionNeuronal signaling and development
04
Disease associations
ObesityMetabolic syndromeNeurodegenerative disease (via neuroprotection)
05
Safety considerations
Given their roles in central and peripheral signaling, targeting galanin receptors could affect appetite, memory, neuronal survival, and multiple metabolic functions, leading to potential off-target CNS and metabolic effects.
06
Biomarkers
Upregulation of GalR1, GalR2, PPARγ2, and adipocyte protein 2 in adipose tissue can indicate active galanin-mediated adipogenic signaling
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