論文

2022年7月8日

The Protective Effect of Edaravone on TDP-43 Plus Oxidative Stress-Induced Neurotoxicity in Neuronal Cells: Analysis of Its Neuroprotective Mechanisms Using RNA Sequencing

Pharmaceuticals
  • Aki Soejima-Kusunoki
  • ,
  • Kinya Okada
  • ,
  • Ryuta Saito
  • ,
  • Kazuhiko Watabe

15
7
開始ページ
842
終了ページ
842
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.3390/ph15070842
出版者・発行元
MDPI AG

Edaravone is a free-radical scavenger drug that was recently approved for the treatment of amyotrophic lateral sclerosis (ALS), a neurodegenerative disease. A pathological hallmark of ALS is the accumulation of ubiquitinated or phosphorylated aggregates of the 43-kDa transactive response DNA binding protein (TDP-43) within the cytoplasm of motor neurons. This study revealed the efficacy of edaravone in preventing neuronal cell death in a TDP-43 proteinopathy model and analyzed the molecular changes associated with the neuroprotection. The viability of the neuronal cells expressing TDP-43 was reduced by oxidative stress, and edaravone (≥10 μmol/L) protected in a concentration-dependent manner against the neurotoxic insult. Differential gene expression analysis revealed changes among pathways related to nuclear erythroid 2-related-factor (Nrf2)-mediated oxidative stress response in cells expressing TDP-43. In edaravone-treated cells expressing TDP-43, significant changes in gene expression were also identified among Nrf2-oxidative response, unfolded protein response, and autophagy pathways. In addition, the expression of genes belonging to phosphatidylinositol metabolism pathways was modified. These findings suggest that the neuroprotective effect of edaravone involves the prevention of TDP-43 misfolding and enhanced clearance of pathological TDP-43 in TDP-43 proteinopathy.

リンク情報
DOI
https://doi.org/10.3390/ph15070842
URL
https://www.mdpi.com/1424-8247/15/7/842/pdf
ID情報
  • DOI : 10.3390/ph15070842
  • eISSN : 1424-8247

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