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Regulation of myogenic activation of p38 MAPK by TACE-mediated TNFα release

Yi-Ping Li1, Airu Niu1, Yefei Wen1

  • 1Department of Integrative Biology and Pharmacology, University of Texas Health Science Center Houston, TX, USA.

Frontiers in Cell and Developmental Biology
|November 4, 2014
PubMed

Insights

Tumor necrosis factor-alpha (TNFα) activates p38 MAPK, a key signal for muscle regeneration. This review explores how TNFα is released to promote myogenesis and muscle repair.

Area of Science:

  • Muscle regeneration
  • Cell signaling
  • Molecular biology

Background:

  • p38 MAPK activation is crucial for myogenic precursor cells (MPCs) to exit the cell cycle and initiate differentiation.
  • Understanding the signaling pathways that activate p38 MAPK is vital for elucidating muscle regeneration mechanisms.

Purpose of the Study:

  • To review recent findings on the role of tumor necrosis factor-alpha (TNFα) in activating p38 MAPK during myogenesis.
  • To explore the signaling mechanisms that lead to TNFα release from differentiating MPCs.

Main Methods:

  • Literature review of recent research findings.
  • Analysis of signaling pathways involving TNFα and TACE.
  • Focus on autocrine/paracrine signaling in MPCs.

Main Results:

  • TNFα acts as a key activator of p38 MAPK in MPCs during myogenesis.
  • TNFα functions in both autocrine and paracrine manners.
  • Diverse regenerative stimuli converge on TNFα converting enzyme (TACE) to release TNFα.

Conclusions:

  • TNFα signaling is a central mechanism in p38 MAPK activation during muscle regeneration.
  • TACE-mediated release of TNFα is a critical step in response to regenerative cues.
  • Further understanding of this pathway can inform strategies for enhancing muscle repair.
Keywords:
TACETNFαdifferentiationmuscle regenerationp38 MAPKsatellite cells

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