The P2X7 receptor: A main player in inflammation

Area of Science:

• Immunology
• Cell Biology
• Molecular Medicine

Background:

• Damage-associated molecular patterns (DAMPs) signal cellular distress.
• Extracellular ATP is a conserved DAMP activating the P2X7 receptor (P2X7R).
• P2X7R is an ion channel expressed on immune cells, crucial for inflammatory processes.

Purpose of the Study:

• To review the established and emerging roles of P2X7R in septic and sterile inflammation.
• To explore P2X7R's function in infectious diseases, including bacterial, parasitic, and viral infections.
• To discuss P2X7R-mediated intracellular pathways and therapeutic potential.

Main Methods:

• Literature review of established and recent research.
• Focus on P2X7R's role in immune modulation.
• Analysis of P2X7R signaling pathways and disease involvement.

Main Results:

• P2X7R activation is central to inflammatory and reparatory responses.
• P2X7R modulates immune responses against Mycobacteria, Plasmodium, and HIV-1.
• P2X7R influences pathways like NLRP3 inflammasome, NF-kB, and VEGF, impacting chronic diseases.

Conclusions:

• P2X7R plays a significant role in diverse inflammatory conditions and infections.
• Understanding P2X7R signaling offers insights into chronic disease pathogenesis.
• P2X7R antagonists represent a promising therapeutic strategy.