P2X7 receptor in multifaceted cellular signalling and its relevance as a potential therapeutic target in different
Abtar Mishra1, Assirbad Behura1, Ashish Kumar1
1Laboratory of Mycobacterial Immunology, Department of Life Science, National Institute of Technology, Rourkela-769008, Odisha, India.
Abstract:
P2X7 receptor, a purinergic receptor family member, is abundantly expressed on many cells, including immune, muscle, bone, neuron, and glia. It acts as an ATP-activated cation channel that permits the influx of Ca2+, Na+ and efflux of K+ ions. The P2X7 receptor plays crucial roles in many physiological processes including cytokine and chemokine secretion, NLRP3 inflammasome activation, cellular growth and differentiation, locomotion, wound healing, transcription factors activation, cell death and T-lymphocyte survival. Past studies have demonstrated the up-regulation and direct association of this receptor in many pathophysiological conditions such as cancer, diabetics, arthritis, tuberculosis (TB) and inflammatory diseases. Hence, targeting this receptor is considered a worthwhile approach to lessen the afflictions associated with the disorders mentioned above by understanding the receptor architecture and downstream signalling processes. Here, in the present review, we have dissected the structural and functional aspects of the P2X7 receptor, emphasizing its role in various diseased conditions. This information will provide in-depth knowledge about the receptor and help to develop apt curative methodologies for the betterment of humanity in the coming years.
Insights
The P2X7 receptor, a key ATP-activated ion channel, is implicated in numerous physiological functions and diseases like cancer and arthritis. Targeting this receptor offers a promising therapeutic strategy for various inflammatory conditions.
Area of Science:
- Cellular and Molecular Biology
- Immunology
- Pharmacology
Background:
- The P2X7 receptor is a widely expressed purinergic receptor involved in cellular signaling.
- It functions as an ATP-gated cation channel, regulating ion flux (Ca2+, Na+, K+).
- The receptor is upregulated in various diseases, including cancer, diabetes, arthritis, and inflammatory conditions.
Purpose of the Study:
- To review the structural and functional aspects of the P2X7 receptor.
- To emphasize the receptor's role in diverse pathophysiological conditions.
- To provide knowledge for developing targeted therapeutic strategies.
Main Methods:
- Literature review of existing studies on P2X7 receptor structure and function.
- Analysis of the receptor's involvement in physiological and pathophysiological processes.
- Synthesis of information on downstream signaling pathways.
Main Results:
- The P2X7 receptor participates in crucial processes like cytokine secretion, inflammasome activation, and cell death.
- Its dysregulation is linked to significant diseases, highlighting its pathological relevance.
- Understanding receptor architecture and signaling is key to therapeutic development.
Conclusions:
- The P2X7 receptor is a significant therapeutic target for numerous diseases.
- Further research into its structure and signaling pathways can lead to novel treatments.
- Targeting P2X7 offers a promising avenue for improving human health.
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