IRF4 in Skeletal Muscle Regulates Exercise Capacity via PTG/Glycogen Pathway

Abstract: Exercise‐induced fatigue and exhaustion are interesting areas for many researchers. Muscle glycogen is critical for physical performance. However, how glycogen metabolism is manipulated during exercise is not very clear. The aim here is to assess the impact of interferon regulatory factor 4 (IRF4) on skeletal muscle glycogen and subsequent regulation of exercise capacity. Skeletal muscle‐specific IRF4 knockout mice show normal body weight and insulin sensitivity, but better exercise capacity and increased glycogen content with unaltered triglyceride levels compared to control mice on chow diet. In contrast, mice overexpression of IRF4 displays decreased exercise capacity and lower glycogen content. Mechanistically, IRF4 regulates glycogen‐associated regulatory subunit protein targeting to glycogen (PTG) to manipulate glucose metabolism in skeletal muscle. Knockdown of PTG can reverse the effects imposed by the absence of IRF4 in vivo. These studies reveal a regulatory pathway including IRF4/PTG/glycogen synthesis on controlling exercise capacity.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
IRF4 in Skeletal Muscle Regulates Exercise Capacity via PTG/Glycogen Pathway ; volume:7 ; number:19 ; year:2020 ; extent:13
Advanced science ; 7, Heft 19 (2020) (gesamt 13)

Urheber
Zhu, Xiaopeng
Yao, Ting
Wang, Ru
Guo, Shanshan
Wang, Xin
Zhou, Zhenqi
Zhang, Yan
Zhuo, Xiaozhen
Wang, Ruitao
Li, John Zhong
Liu, Tiemin
Kong, Xingxing

DOI
10.1002/advs.202001502
URN
urn:nbn:de:101:1-2022062309490770150228
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:36 MESZ

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Beteiligte

  • Zhu, Xiaopeng
  • Yao, Ting
  • Wang, Ru
  • Guo, Shanshan
  • Wang, Xin
  • Zhou, Zhenqi
  • Zhang, Yan
  • Zhuo, Xiaozhen
  • Wang, Ruitao
  • Li, John Zhong
  • Liu, Tiemin
  • Kong, Xingxing

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