The P2X7 Receptor: Central Hub of Brain Diseases

Roberta Andrejew1, Ágatha Oliveira-Giacomelli1, Deidiane Elisa Ribeiro1

  • 1Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil.

Insights

The P2X7 receptor, activated by adenosine triphosphate (ATP), plays a role in brain diseases. Targeting this receptor shows promise for treating neurodegenerative and psychiatric disorders.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Pharmacology

Background:

  • The P2X7 receptor is an ATP-gated cation channel implicated in cell death and ATP release.
  • It is expressed in the central nervous system (CNS), particularly in regions affected by neurodegenerative and psychiatric disorders.
  • While its role in glial cells is known, its function in neurons remains debated.

Purpose of the Study:

  • To review the molecular mechanisms of P2X7 receptor signaling in CNS diseases.
  • To discuss the involvement of P2X7 receptors in neuroinflammation, glutamate release, and neuroplasticity.
  • To highlight P2X7 receptor antagonists for potential therapeutic applications in brain diseases.

Main Methods:

  • Literature review of P2X7 receptor functions in the CNS.
  • Analysis of P2X7 receptor involvement in neurodegenerative diseases, psychiatric disorders, and brain tumors.
  • Examination of P2X7 receptor gene polymorphisms and disease associations.

Main Results:

  • P2X7 receptors mediate neuroinflammatory responses, glutamate release, and neuroplasticity impairment.
  • P2X7 receptor gene variations are linked to depression.
  • Isoforms of P2X7 receptors are implicated in neuropsychiatric diseases.

Conclusions:

  • The P2X7 receptor is a potential therapeutic target for various brain diseases.
  • Development of CNS-penetrant P2X7 receptor antagonists is advancing.
  • Further research into P2X7 receptor's neuronal roles is warranted.

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