Dynamic changes in the regulatory T-cell heterogeneity and function by murine IL-2 mutein.

ABSTRACT: The therapeutic expansion of Foxp3⁺ regulatory T cells (Tregs) shows promise for treating autoimmune and inflammatory disorders. Yet, how this treatment affects the heterogeneity and function of Tregs is not clear. Using single-cell RNA-seq analysis, we characterized 31,908 Tregs from the mice treated with a half-life extended mutant form of murine IL-2 (IL-2 mutein, IL-2M) that preferentially expanded Tregs, or mouse IgG Fc as a control. Cell clustering analysis revealed that IL-2M specifically expands multiple sub-states of Tregs with distinct expression profiles. TCR profiling with single-cell analysis uncovered Treg migration across tissues and transcriptional changes between clonally related Tregs after IL-2M treatment. Finally, we identified IL-2M-expanded Tnfrsf9⁺

SUBMITTER: Lu DR 

PROVIDER: S-EPMC7156283 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature