Open Access

Pyropia yezoensis protein protects against TNF‑α‑induced myotube atrophy in C2C12 myotubes via the NF‑κB signaling pathway

  • Authors:
    • Min-Kyeong Lee
    • Youn Hee Choi
    • Taek-Jeong Nam
  • View Affiliations

  • Published online on: April 28, 2021     https://doi.org/10.3892/mmr.2021.12125
  • Article Number: 486
  • Copyright: © Lee et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The protein extracted from red algae Pyropia yezoensis has various biological activities, including anti‑inflammatory, anticancer, antioxidant, and antiobesity properties. However, the effects of P. yezoensis protein (PYCP) on tumor necrosis factor‑α (TNF‑α)‑induced muscle atrophy are unknown. Therefore, the present study investigated the protective effects and related mechanisms of PYCP against TNF‑α‑induced myotube atrophy in C2C12 myotubes. Treatment with TNF‑α (20 ng/ml) for 48 h significantly reduced myotube viability and diameter and increased intracellular reactive oxygen species levels; these effects were significantly reversed in a dose‑dependent manner following treatment with 25‑100 µg/ml PYCP. PYCP inhibited the expression of TNF receptor‑1 in TNF‑α‑induced myotubes. In addition, PYCP markedly downregulated the nuclear translocation of nuclear factor‑κB (NF‑κB) by inhibiting the phosphorylation of inhibitor of κB. Furthermore, PYCP treatment suppressed 20S proteasome activity, IL‑6 production, and the expression of the E3 ubiquitin ligases, atrogin‑1/muscle atrophy F‑box and muscle RING‑finger protein‑1. Finally, PYCP treatment increased the protein expression levels of myoblast determination protein 1 and myogenin in TNF‑α‑induced myotubes. The present findings indicate that PYCP may protect against TNF‑α‑induced myotube atrophy by inhibiting the proinflammatory NF‑κB pathway.

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July-2021
Volume 24 Issue 1

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Spandidos Publications style
Lee M, Choi Y and Nam T: <em>Pyropia yezoensis</em> protein protects against TNF‑α‑induced myotube atrophy in C2C12 myotubes via the NF‑κB signaling pathway. Mol Med Rep 24: 486, 2021
APA
Lee, M., Choi, Y., & Nam, T. (2021). <em>Pyropia yezoensis</em> protein protects against TNF‑α‑induced myotube atrophy in C2C12 myotubes via the NF‑κB signaling pathway. Molecular Medicine Reports, 24, 486. https://doi.org/10.3892/mmr.2021.12125
MLA
Lee, M., Choi, Y., Nam, T."<em>Pyropia yezoensis</em> protein protects against TNF‑α‑induced myotube atrophy in C2C12 myotubes via the NF‑κB signaling pathway". Molecular Medicine Reports 24.1 (2021): 486.
Chicago
Lee, M., Choi, Y., Nam, T."<em>Pyropia yezoensis</em> protein protects against TNF‑α‑induced myotube atrophy in C2C12 myotubes via the NF‑κB signaling pathway". Molecular Medicine Reports 24, no. 1 (2021): 486. https://doi.org/10.3892/mmr.2021.12125