Cell Reports (Mar 2024)

The CD27/CD70 pathway negatively regulates visceral adipose tissue-resident Th2 cells and controls metabolic homeostasis

  • Kevin Englebert,
  • Anaelle Taquin,
  • Abdulkader Azouz,
  • Valérie Acolty,
  • Sylvie Vande Velde,
  • Marie Vanhollebeke,
  • Hadrien Innes,
  • Louis Boon,
  • Tibor Keler,
  • Oberdan Leo,
  • Stanislas Goriely,
  • Muriel Moser,
  • Guillaume Oldenhove

Journal volume & issue
Vol. 43, no. 3
p. 113824

Abstract

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Summary: Adipose tissue homeostasis relies on the interplay between several regulatory lineages, such as type 2 innate lymphoid cells (ILC2s), T helper 2 (Th2) cells, regulatory T cells, eosinophils, and type 2 macrophages. Among them, ILC2s are numerically the dominant source of type 2 cytokines and are considered as major regulators of adiposity. Despite the overlap in immune effector molecules and sensitivity to alarmins (thymic stromal lymphopoietin and interleukin-33) between ILC2s and resident memory Th2 lymphocytes, the role of the adaptive axis of type 2 immunity remains unclear. We show that mice deficient in CD27, a member of the tumor necrosis factor receptor superfamily, are more resistant to obesity and associated disorders. A comparative analysis of the CD4 compartment of both strains revealed higher numbers of fat-resident memory Th2 cells in the adipose tissue of CD27 knockout mice, which correlated with decreased programmed cell death protein 1-induced apoptosis. Our data point to a non-redundant role for Th2 lymphocytes in obesogenic conditions.

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