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Sensing context: Inhibitory receptors on non-hematopoietic cells.

Helen J von Richthofen1,2, Linde Meyaard1,2

  • 1Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.

European Journal of Immunology
|March 25, 2023
PubMed
Summary
This summary is machine-generated.

Non-hematopoietic cells, like epithelial cells, use inhibitory receptors to sense their environment and fine-tune responses to threats. This prevents overactive immunity and ensures appropriate reactions to microbial and endogenous stimuli.

Keywords:
endotheliumepitheliumhomeostasisinhibitory receptorsnon-hematopoietic cells

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Area of Science:

  • Immunology
  • Cell Biology
  • Physiology

Background:

  • Non-hematopoietic cells, including epithelial and endothelial cells, can detect microbial and endogenous threats.
  • Environmental context dictates the response of these cells, distinguishing between harmless commensals and harmful stimuli.
  • Inhibitory receptors, typically studied in immune cells, are also present on non-hematopoietic cells.

Purpose of the Study:

  • To review the role of inhibitory receptors in regulating non-hematopoietic cells.
  • To highlight how these receptors provide context-dependent responses.
  • To explore the implications for immune regulation and cell function.

Main Methods:

  • Literature review focusing on inhibitory receptors in epithelial and endothelial cells.
  • Analysis of signaling pathways and functional outcomes regulated by these receptors.
  • Synthesis of evidence for context-sensing mechanisms.

Main Results:

  • Inhibitory receptors on non-hematopoietic cells sense diverse signals like cell-cell adhesion, matrix interactions, and apoptotic cells.
  • These receptors modulate critical cell functions including immune activation, proliferation, and migration.
  • Evidence suggests inhibitory receptors provide crucial context for cellular responses.

Conclusions:

  • Inhibitory receptors are key regulators of non-hematopoietic cell responses, integrating environmental cues.
  • They fine-tune cellular reactions to endogenous and microbial stimuli, preventing inappropriate immune activation.
  • Further systematic investigation of inhibitory receptor functions in non-hematopoietic cells is warranted.