Functions de motricité générale - Publications Scientifiques

Dernière publication 03/10/2023

Regulatory T cells require IL6 receptor alpha signaling to control skeletal musc

Muscle-residing regulatory T cells (Tregs) control local tissue integrity and function. However, the molecular interface connecting Treg-based...

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    [title] => Regulatory T cells require IL6 receptor alpha signaling to control skeletal musc
    [paragraph] => Regulatory T cells require IL6 receptor alpha signaling to control skeletal muscle function and regeneration
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Authors
Becker M, Joseph SS, Garcia-Carrizo F, Tom RZ, Opaleva D, Serr I, Tschöp MH, Schulz TJ, Hofmann SM, Daniel C.

 Lab
Ludwig-Maximilians-Universität Munich, Germany
Journal
Cell Metab
Abstract
Muscle-residing regulatory T cells (Tregs) control local tissue integrity and function. However, the molecular interface connecting Treg-based regulation with muscle function and regeneration remains largely unexplored. Here, we show that exercise fosters a stable induction of highly functional muscle-residing Tregs with increased expression of amphiregulin (Areg), EGFR, and ST2. Mechanistically, we find that mice lacking IL6Rα on T cells (TKO) harbor significant reductions in muscle Treg functionality and satellite and fibro-adipogenic progenitor cells, which are required for muscle regeneration. Using exercise and sarcopenia models, IL6Rα TKO mice demonstrate deficits in Tregs, their functional maturation, and a more pronounced decline in muscle mass. Muscle injury models indicate that IL6Rα TKO mice have significant disabilities in muscle regeneration. Treg gain of function restores impaired muscle repair in IL6Rα TKO mice. Of note, pharmacological IL6R blockade in WT mice phenocopies deficits in muscle function identified in IL6Rα TKO mice, thereby highlighting the clinical implications of the findings.
BIOSEB Instruments Used
Bioseb CIS Software (BIO-CIS2),Grip strength test (BIO-GS4)
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Nouveautés GS4 - 2023: Écran couleur rétroéclairé (meilleure lisibilité), pédale de remise à zéro, durée de batterie optimisée, taille de mémoire augmentée à 500 valeurs, compteur d'animaux, port USB (transfert de données/charge)

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