“STRESSED OUT”

the role of FUS and TDP-43 in amyotrophic lateral sclerosis

Yagiz Alp Aksoy, Wei Deng, Jack Stoddart, Roger Chung, Gilles Guillemin, Nicholas James Cole, Graham Gregory Neely*, Daniel Hesselson

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Mutations in fused-in-sarcoma (FUS) and TAR DNA binding protein-43 (TDP-43; TARDBP) are known to cause the severe adult-onset neurodegenerative disorder amyotrophic lateral sclerosis (ALS). Proteinopathy caused by cellular stresses such as endoplasmic reticulum (ER) stress, oxidative stress, mitochondrial stress and proteasomal stress and the formation of stress granules (SGs), cytoplasmic aggregates and inclusions is a hallmark of ALS. FUS and TDP-43, which are DNA/RNA binding proteins that regulate transcription, RNA homeostasis and protein translation are implicated in ALS proteinopathy. Disease-causing mutations in FUS and TDP-43 cause sequestration of these proteins and their interacting partners in the cytoplasm, which leads to aggregation. This mislocalization and formation of aggregates and SGs is cytotoxic and a contributor to neuronal death. We explore how loss-of-nuclear-function and gain-of-cytoplasmic function mechanisms that affect FUS and TPD-43 localization can generate a ‘stressed out’ neuronal pathology and proteinopathy that drives ALS progression.

Original languageEnglish
Article number105821
Pages (from-to)1-7
Number of pages7
JournalInternational Journal of Biochemistry and Cell Biology
Volume126
DOIs
Publication statusPublished - 1 Sep 2020

Keywords

  • Cellular stress
  • FUS
  • Proteinopathy
  • TDP-43

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