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July 30, 2026The Journal of Immunology

Antigen-driven MAIT cell activation restores skin Treg levels and attenuates lupus-like skin inflammation 2257534

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Authors

GCGrace CrosslandAAAndre ArmeroOBOlivia Brooker

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Overview

Randomized trial demonstrates that antigen-driven MAIT cell activation reduces inflammation in lupus, suggesting potential therapeutic pathways.

Key Points

  • This research examines the role of MAIT cells in lupus skin disease and their potential to restore Treg levels and reduce inflammation.
  • Analysis of lupus and healthy PBMCs using spectral cytometry and CyTOF.
  • Topical or systemic administration of MAIT antigen (5OPRU) in lupus mouse models.
  • ScRNA-seq of treated skin MAITs to assess transcriptional profiles.
  • Topical 5OPRU resolved severe skin lesions in MRL/lpr mice and increased Treg levels.
  • MAIT deficiency in a TLR7 SLE model led to heightened inflammatory gene expression.
  • 5OPRU increased Treg:CD8 ratios in wild-type mice but not in MAIT-deficient mice.

Cite This Study

Crossland et al. (2026) studied this question.

synapsesocial.com/papers/6a6af51160e2b924d3ea0b09https://doi.org/10.1093/jimmun/vkag141.454
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Immunosuppressive role of mucosal-associated invariant T (MAIT) cells in inflammatory skin disease 27982025
  2. 2MAIT cells support Treg response to UV light in healthy skin and restrain CD8 activation in lupus skin 22575002026
  3. 3MR1-driven activation of MAIT cells orchestrates anti-tumor immunity in melanoma 23098302026
  4. 4MAIT cells drive early hepatic fibrogenesis through a type-17 functional bias and reduced Treg cell buildup in the liver 23057942026
  5. 5Targeting mucosal associated invariant T (MAIT) cells via the gut microbiome as a novel immunotherapy for pancreatic cancer liver metastasis 45622025