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Purinergic Receptors in Dendritic Cells.

Miaomiao Wang1, Xiaoxiao Zhao1, Shuai Hou1

  • 1School of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, People's Republic of China.

Journal of Inflammation Research
|October 6, 2025
PubMed
Summary

Dendritic cells (DCs) use purinergic receptors (P1 and P2) to balance immune responses. P1 receptors promote immune activation, while P2 receptors induce inflammation, maintaining immune homeostasis.

Keywords:
dendritic cellsimmunomodulationpurinergic receptorsyin and yang

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Area of Science:

  • Immunology
  • Cell Biology
  • Purinergic Signaling

Background:

  • Dendritic cells (DCs) are key antigen-presenting cells (APCs) crucial for immunomodulation.
  • Extracellular purines and their receptors are increasingly recognized for their roles in DC function.

Purpose of the Study:

  • To review the expression and function of purinergic receptors (P1 and P2) in dendritic cells.
  • To elucidate the distinct roles of P1 and P2 receptors in DC-mediated immune responses.

Main Methods:

  • Comprehensive literature review on purinergic receptor expression and function in DCs.
  • Analysis of how P1 and P2 receptor activation influences cytokine release, DC activation, migration, and antigen presentation.

Main Results:

  • DCs express multiple P1, P2X, and P2Y receptors, with levels varying by developmental stage and subset.
  • P1 receptor activation by adenosine (ADO) enhances DC activation, migration, antigen presentation, and IL-10/IL-23 release.
  • P2 receptor activation by extracellular ATP promotes pro-inflammatory cytokine secretion (TNF-α, IL-1β, IL-18, IL-12) and inhibits DC migration/antigen presentation.

Conclusions:

  • A Yin-Yang relationship exists between P1 and P2 receptors in DCs, crucial for immune homeostasis.
  • Dynamic regulation of the ATP/ADO ratio by ectonucleotidases is essential for maintaining this balance and safeguarding systemic immunity.