Regulatory T Cells Regulate Blastemal Proliferation During Zebrafish Caudal Fin Regeneration
Overview
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The role of T cells in appendage regeneration remains unclear. In this study, we revealed an important role for regulatory T cells (Tregs), a subset of T cells that regulate tolerance and tissue repair, in the epimorphic regeneration of zebrafish caudal fin tissue. Upon amputation, fin tissue-resident Tregs infiltrate into the blastema, a population of progenitor cells that produce new fin tissues. Conditional genetic ablation of Tregs attenuates blastemal cell proliferation during fin regeneration. Blastema-infiltrating Tregs upregulate the expression of and , and pharmacological activation of IGF signaling restores blastemal proliferation in Treg-ablated zebrafish. These findings further extend our understandings of Treg function in tissue regeneration and repair.
Wang G, Munoz-Rojas A, Spallanzani R, Franklin R, Benoist C, Mathis D Immunity. 2024; 57(6):1345-1359.e5.
PMID: 38692280 PMC: 11188921. DOI: 10.1016/j.immuni.2024.04.002.