UDP facilitates microglial phagocytosis through P2Y6 receptors.

Research output: Contribution to journalReview article

14 Citations (Scopus)

Abstract

Microglia engage in the clearance of dead cells or dangerous debris. When neighboring cells are injured, the cells release or leak ATP into extracellular space and microglia rapidly move toward or extend a process to the nucleotides as chemotaxis through P2Y12 receptors. In the meanwhile, microglia express the metabotropic P2Y6 receptors, the activation of which by uridine 5'-diphosphate (UDP) triggers microglial phagocytosis in a concentration-dependent fashion. UDP/UTP was leaked when hippocampal neurons were damaged by kainic acid in vivo and in vitro. Systemic administration of kainic acid in rats resulted in neuronal cell death in the hippocampal CA1 and CA3 regions, where increases in mRNA for P2Y6 receptors in activated microglia. Thus, the P2Y6 receptor is upregulated when neurons are damaged, and would function as a sensor for phagocytosis by sensing diffusible UDP signals.

Original languageEnglish
Pages (from-to)131-132
Number of pages2
JournalCell adhesion & migration
Volume1
Issue number3
DOIs
Publication statusPublished - Jan 1 2007

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Uridine Diphosphate
Microglia
Phagocytosis
Kainic Acid
Hippocampal CA3 Region
Hippocampal CA1 Region
Neurons
Uridine Triphosphate
Extracellular Space
Chemotaxis
Cell Death
Nucleotides
Adenosine Triphosphate
Messenger RNA
purinoceptor P2Y6

All Science Journal Classification (ASJC) codes

  • Cellular and Molecular Neuroscience
  • Cell Biology

Cite this

UDP facilitates microglial phagocytosis through P2Y6 receptors. / Inoue, Kazuhide.

In: Cell adhesion & migration, Vol. 1, No. 3, 01.01.2007, p. 131-132.

Research output: Contribution to journalReview article

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