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Innate immune memory: An evolutionary perspective.

Benjamin Gourbal1, Silvain Pinaud1, Gerold J M Beckers2

  • 1Interactions Hosts Pathogens Environments UMR 5244, University of Perpignan Via Domitia, CNRS, IFREMER, Univ. Montpellier, Perpignan, France.

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Summary
This summary is machine-generated.

Innate immune memory, a form of biological defense, is present across diverse organisms. This review explores its evolutionary role, molecular basis, and phylogenetic comparisons, highlighting "trained" innate immunity.

Keywords:
defense primingevolutioninnate immune memoryinvertebratesplantstrained immunityvertebrates

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Area of Science:

  • Immunology
  • Evolutionary Biology
  • Genetics

Background:

  • Increasing evidence supports innate immune memory in various organisms.
  • This phenomenon challenges traditional distinctions between innate and adaptive immunity.

Purpose of the Study:

  • To compare innate immune memory across diverse species using a phylogenetic approach.
  • To elucidate the acquisition, molecular basis, and evolutionary significance of innate immune memory.

Main Methods:

  • Review of existing literature on innate immunity and immune memory.
  • Phylogenetic analysis of immune memory mechanisms in different organisms.
  • Molecular characterization of innate immune memory in host-parasite systems.

Main Results:

  • Innate immune responses can be 'primed' or 'trained', exhibiting a form of immunological memory.
  • Molecular mechanisms underlying innate immune memory are being elucidated across diverse taxa.
  • Phylogenetic comparisons reveal conserved and divergent strategies for innate immune memory.

Conclusions:

  • Innate immune memory plays a crucial role in host defense and evolution.
  • Revising the innate vs. adaptive immunity classification is necessary.
  • Understanding trained innate immunity opens new avenues for host-parasite interaction research.