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NEK1 loss-of-function mutation induces DNA damage accumulation in ALS patient-derived motoneurons
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2018 (English)In: Stem Cell Research, ISSN 1873-5061, E-ISSN 1876-7753, Vol. 30, p. 150-162Article in journal (Refereed) Published
Abstract [en]

Mutations in genes coding for proteins involved in DNA damage response (DDR) and repair, such as C9orf72 and FUS (Fused in Sarcoma), are associated with neurodegenerative diseases and lead to amyotrophic lateral sclerosis (ALS). Heterozygous loss-of-function mutations in NEK1 (NIMA-related kinase 1) have also been recently found to cause ALS. NEK1 codes for a multifunctional protein, crucially involved in mitotic checkpoint control and DDR. To resolve pathological alterations associated with NEK1 mutation, we compared hiPSC-derived motoneurons carrying a NEK1 mutation with mutant C9orf72 and wild type neurons at basal level and after DNA damage induction. Motoneurons carrying a C9orf72 mutation exhibited cell specific signs of increased DNA damage. This phenotype was even more severe in NEK1c.2434A>T neurons that showed significantly increased DNA damage at basal level and impaired DDR after induction of DNA damage in an maturation-dependent manner. Our results provide first mechanistic insight in pathophysiological alterations induced by NEK1 mutations and point to a converging pathomechanism of different gene mutations causative for ALS. Therefore, our study contributes to the development of novel therapeutic strategies to reduce DNA damage accumulation in neurodegenerative diseases and ALS.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 30, p. 150-162
Keywords [en]
hiPSC, ALS, NEK1, neurodegeneration, DNA damage
National Category
Medical Genetics Cell and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-150372DOI: 10.1016/j.scr.2018.06.005ISI: 000438786600020PubMedID: 29929116Scopus ID: 2-s2.0-85048705749OAI: oai:DiVA.org:umu-150372DiVA, id: diva2:1237422
Available from: 2018-08-08 Created: 2018-08-08 Last updated: 2018-08-08Bibliographically approved

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