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The MR1/MAIT cell axis in CNS diseases.

Rashmi Shrinivasan1, Season K Wyatt-Johnson2, Randy R Brutkiewicz2

  • 1Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, USA.

Brain, Behavior, and Immunity
|December 29, 2023
PubMed
Summary

Mucosal-associated invariant T (MAIT) cells, which recognize vitamin B metabolites via MR1, are increasingly studied for their role in central nervous system (CNS) disorders. Research highlights their involvement in neurological diseases, suggesting therapeutic potential.

Keywords:
Alzheimer’s diseaseCerebral palsyGlioblastomaIschemiaMultiple sclerosisNeuroinflammation

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Area of Science:

  • Immunology
  • Neuroscience
  • Innate Immunity

Background:

  • Mucosal-associated invariant T (MAIT) cells are innate-like T cells found in mucosal tissues, lungs, and blood.
  • MAIT cells detect microbial vitamin B metabolites presented by the MR1 protein on various cell types, including in the central nervous system (CNS).
  • While initially studied in peripheral diseases, MAIT cell involvement in CNS disorders has gained attention since the early 2000s.

Purpose of the Study:

  • To review the current understanding of the MR1/MAIT cell axis in the context of neurological diseases.
  • To explore the role of MAIT cells in the neuropathology of various CNS conditions.
  • To highlight the potential of targeting the MR1/MAIT cell axis for novel therapeutic strategies.

Main Methods:

  • Literature review of studies investigating the MR1/MAIT cell axis in neurological diseases.
  • Analysis of the involvement of MAIT cells in conditions such as multiple sclerosis, brain tumors, ischemia, and Alzheimer's disease.
  • Synthesis of findings to underscore the significance of this axis in CNS disorders.

Main Results:

  • The MR1/MAIT cell axis plays a role in the neuropathology of multiple sclerosis, experimental autoimmune encephalomyelitis, brain cancer, ischemia, cerebral palsy, aging, and Alzheimer's disease.
  • Evidence suggests MAIT cells can contribute to disease progression or remission in these neurological conditions.
  • The MR1/MAIT cell axis is implicated in the immune response within the CNS.

Conclusions:

  • The MR1/MAIT cell axis is an important, yet under-studied, component of innate immunity in the CNS.
  • Understanding the role of MAIT cells in neurological diseases is crucial for developing new treatments.
  • Targeting the MR1/MAIT cell pathway offers promising avenues for future therapeutic interventions in CNS disorders.