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Inhibitory pattern recognition receptors.

Matevž Rumpret1,2, Helen J von Richthofen1,2, Victor Peperzak1

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

The Journal of Experimental Medicine
|December 14, 2021
PubMed
Summary
This summary is machine-generated.

The immune system uses inhibitory pattern recognition receptors (iPRRs) to sense danger signals, providing context for immune responses. This helps balance immune reactions and promotes tolerance to harmless microbes.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Cellular Biology

Background:

  • The immune system recognizes molecular patterns from pathogens and damaged tissues using pattern recognition receptors (PRRs).
  • Immune responses must be context-dependent to avoid reacting to commensals or during normal physiological cell death.
  • The mechanisms providing context for PRR-mediated immune recognition are not fully understood.

Purpose of the Study:

  • To explore the role of inhibitory receptors as counterparts to activating PRRs.
  • To propose a novel class of inhibitory pattern recognition receptors (iPRRs).
  • To elucidate how iPRRs provide context for immune responses and mediate tolerance.

Main Methods:

  • Literature review and conceptual analysis of immune receptor function.
  • Discussion of existing knowledge on activating and inhibitory immune receptors.
  • Hypothesizing the function of iPRRs in immune regulation.

Main Results:

  • Inhibitory receptors are proposed as crucial counterparts to activating PRRs.
  • A new category, inhibitory pattern recognition receptors (iPRRs), is hypothesized.
  • iPRRs are suggested to recognize patterns associated with danger, homeostasis, or both.

Conclusions:

  • Recognition of molecular patterns by iPRRs provides essential context for immune responses.
  • iPRRs are proposed to mediate tolerance to commensal microbes.
  • iPRRs play a key role in balancing immune reactions to danger signals.