P2RX7 at the Host-Pathogen Interface of Infectious Diseases

Area of Science:

• Immunology
• Molecular Biology
• Infectious Diseases

Background:

• The P2X7 receptor (P2RX7) is a key sensor of cellular danger signals, detecting extracellular nucleotides released by injured cells.
• P2RX7 is expressed in immune cells and plays a significant role in pathogen surveillance and host defense mechanisms against infectious agents.
• Existing literature highlights P2RX7's involvement in inflammatory diseases and host-pathogen interactions.

Purpose of the Study:

• To review the current understanding of the P2X7 receptor's function in the host response to a wide range of pathogens.
• To consolidate evidence on P2RX7's role in mediating and modulating immune responses against viral, bacterial, fungal, protozoal, and helminth infections.
• To explore P2X7 signaling's contribution to sensing damage-associated molecular patterns and its impact on immunopathology and protection.

Main Methods:

• Comprehensive literature review of existing research on P2X7 receptor function in host-pathogen interactions.
• Analysis of both in vitro and in vivo studies investigating the role of P2X7 in immune responses.
• Synthesis of data concerning P2X7 signaling in various cell types and its impact on diverse infectious agents.

Main Results:

• P2X7 receptors are critical for mediating and modulating immune responses across various pathogen types.
• Evidence from in vitro and in vivo studies supports a significant role for P2X7 in host defense.
• P2X7 signaling contributes to sensing danger signals from infected cells, influencing outcomes of immunopathology or protection.

Conclusions:

• P2X7 receptor signaling is pivotal in the host's defense against a broad spectrum of pathogens.
• The receptor's function in sensing danger signals is crucial for modulating immune responses, impacting disease pathogenesis and immunity.
• Further research into P2X7 signaling pathways can offer insights into novel therapeutic strategies for infectious diseases.