Novel oxindole compounds inhibit the aggregation of amyloidogenic proteins associated with neurodegenerative diseases

Shintaro Kimura, Hiroaki Kamishina, Yoko Hirata, Kyoji Furuta, Yoshiaki Furukawa, Osamu Yamato, Sadatoshi Maeda, Yuji O. Kamatari

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Amyloidogenic proteins form aggregates in cells, thereby leading to neurodegenerative disorders, including Alzheimer's and prion's disease, amyotrophic lateral sclerosis (ALS) in humans, and degenerative myelopathy (DM) and cognitive dysfunction in dogs. Hence, many small-molecule compounds have been screened to examine their inhibitory effects on amyloidogenic protein aggregation. However, no effective drug suitable for transition to clinical use has been found. Here we examined several novel oxindole compounds (GIF compounds) for their inhibitory effects on aggregate formation of the canine mutant superoxide dismutase 1 (cSOD1 E40K), a causative mutation resulting in DM, using Thioflavin-T fluorescence. Most GIF compounds inhibited the aggregation of cSOD1 E40K. Among the compounds, GIF-0854-r and GIF-0890-r were most effective. Their inhibitory effects were also observed in cSOD1 E40K-transfected cells. Additionally, GIF-0890-r effectively inhibited the aggregate formation of human SOD1 G93A, a causative mutation of ALS. GIF-0827-r and GIF-0856-r also effectively inhibited aggregate formation of human prion protein (hPrP). Subsequently, the correlation between their inhibitory effects on cSOD1 and hPrP aggregation was shown, indicating GIF compounds inhibited the aggregate formation of multiple amyloidogenic proteins. Conclusively, the novel oxindole compounds (GIF-0827-r, GIF-0854-r, GIF-0856-r, and GIF-0890-r) are proposed as useful therapeutic candidates for amyloidogenic neurodegenerative disorders.

本文言語English
論文番号130114
ジャーナルBiochimica et Biophysica Acta - General Subjects
1866
5
DOI
出版ステータスPublished - 2022 5月

ASJC Scopus subject areas

  • 生物理学
  • 生化学
  • 分子生物学

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