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GPCR19-P2X7 Pathway

Molecular classification: Pathway, G protein-coupled receptor, Ion channel

Overview

The GPCR19-P2X7 pathway refers to the functional interaction between G protein-coupled receptor 19 (GPCR19, also known as TGR5) and the P2X7 receptor (P2X7R), an ATP-gated ion channel. This pathway is particularly significant in microglial cells of the central nervous system, where it regulates neuroinflammatory responses, especially those implicated in neurodegenerative diseases such as Alzheimer's disease. Activation of the pathway can lead to inflammasome activation and release of pro-inflammatory cytokines, while modulation via GPCR19 can temper these effects.

Mechanism of action

Modulation of P2X7 receptor activity and NLRP3 inflammasome activation.

Biological functions

NeuroinflammationImmune responseCell deathSignal transduction

Disease associations

Neurodegenerative diseaseInflammationAlzheimer's disease

Safety considerations

Potential for immune suppressionOff-target effects on other P2X receptors or GPCRs

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