Identification of hub molecules of FUS-ALS by Bayesian gene regulatory network analysis of iPSC model: iBRN

Masahiro Nogami, Mitsuru Ishikawa, Atsushi Doi, Osamu Sano, Takefumi Sone, Tetsuya Akiyama, Masashi Aoki, Atsushi Nakanishi, Kazuhiro Ogi, Masato Yano, Hideyuki Okano

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Fused in sarcoma/translated in liposarcoma (FUS) is a causative gene of amyotrophic lateral sclerosis (ALS). Mutated FUS causes accumulation of DNA damage and cytosolic stress granule (SG) formation, thereby motor neuron (MN) death. However, key molecular aetiology remains unclear. Here, we applied a novel platform technology, iBRN, “Non- biased” Bayesian gene regulatory network analysis based on induced pluripotent stem cell (iPSC)-derived cell model, to elucidate the molecular aetiology using transcriptome of iPSC-derived MNs harboring FUSH517D. iBRN revealed “hub molecules”, which strongly influenced transcriptome network, such as miR-125b-5p-TIMELESS axis and PRKDC for the molecular aetiology. Next, we confirmed miR-125b-5p-TIMELESS axis in FUS H517D MNs such that miR-125b-5p regulated several DNA repair-related genes including TIMELESS. In addition, we validated both introduction of miR-125b-5p and knocking down of TIMELESS caused DNA damage in the cell culture model. Furthermore, PRKDC was strongly associated with FUS mis-localization into SGs by DNA damage under impaired DNA-PK activity. Collectively, our iBRN strategy provides the first compelling evidence to elucidate molecular aetiology in neurodegenerative diseases.

本文言語English
論文番号105364
ジャーナルNeurobiology of Disease
155
DOI
出版ステータスPublished - 2021 7月

ASJC Scopus subject areas

  • 神経学

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