OSCR

Striatal neuron dysfunction in C9ORF72-FTD/ALS is driven by AIS and potassium channel dysregulation.

Overview

Authors: Iris-Stefania Pasniceanu1,2, Manpreet S. Atwal1,2, Cleide Dos Santos Souza1,2, Tobias Moll1,2, Marianne King1,2, Connie Treanor1,2, Daniel Cabezas de la Fuente1,2, Ryan J.H. West1,2, Laura Ferraiuolo1,2, Matthew R. Livesey1,2
  1. Sheffield Institute for Translational Neuroscience, Division of Neuroscience, University of Sheffield, Sheffield S10 2HQ, UK
  2. The Neuroscience Institute, University of Sheffield, Sheffield S10 2HQ, UK
Institutions: University of Sheffield (United Kingdom)
Journal: Cell reports, volume 45, issue 7, article 117672
Dates: received 29 October 2025; accepted 22 June 2026; published online 7 July 2026; in print July 2026
Type: Research article · Language: English
License: CC BY
Identifiers: DOI 10.1016/j.celrep.2026.117672 · PMID 42412610 · PMCID PMC13415681 · OpenAlex W7167639278
Open access: gold, a free copy (OpenAlex)
Status: code on request
Categories: human (organism), other condition (population), Alzheimer's / dementia (population), cellular / molecular (subfield)
Methods: Statistics, Evoked potentials
Keywords: C9ORF72, ALS, FTD, striatal, excitability, synaptic, inhibitory, neuron, electrophysiology
MeSH: Amyotrophic Lateral Sclerosis*, C9orf72 Protein*, Corpus Striatum*, Frontotemporal Dementia*, Neurons*, Potassium Channels*, Action Potentials, Axon Initial Segment, Humans, Induced Pluripotent Stem Cells, Medium Spiny Neurons (* major topic)
Topic: Amyotrophic Lateral Sclerosis Research (Neurology, Medicine), according to OpenAlex
Funding: Motor Neurone Disease Association (900-792); philanthropic; University of Sheffield Institutional Open Access Fund
Citations: not cited yet (Europe PMC); 50 references in the paper

Abstract

Frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) form a neurodegenerative spectrum characterized by progressive cognitive, behavioral, and motor decline, yet the contribution of the striatum to disease pathophysiology remains poorly understood. Here, we generate inhibitory striatal medium spiny neurons (MSNs) from human induced pluripotent stem cells carrying the C9ORF72 repeat expansion, the most common genetic cause of FTD/ALS, and compare them with isogenic-corrected, control, and patient-derived motor neurons. Using whole-cell electrophysiology, pharmacological manipulation, and high-resolution imaging, we identify a vulnerability of C9ORF72 MSNs to develop intrinsic hypoexcitability with linked synaptic dysfunction. These abnormalities are associated with axon initial segment shortening and altered voltage-gated potassium channel function relative to control and isogenic-corrected neurons. Pharmacological modulation partially restores action potential waveform properties, indicating that key electrophysiological abnormalities are reversible. These findings identify the striatum as a critical site of dysfunction in FTD/ALS and highlight striatal excitability as a potential therapeutic target.

Reproduced under the paper's license (CC BY), from the paper cited above.

Code

The paper says that its authors' code is available on request: it was not published with the paper, so there is nothing to verify.

The paper's code and data availability statement is in the Data section.

Tracing map

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Data

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Data and code availability

• All data reported in this paper will be shared by the lead contact upon request. • This paper does not report original code. • Any additional information required to reanalyze the data reported in this paper is available from the lead contact upon request.

Reproduced under the paper's license (CC BY), from the paper cited above.

Versions

The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.

Version 2, 28 September 2026

  • Publisher: — → Cell Press

Version 1, 27 September 2026: the first record

Recorded: type, language, journal, volume, issue, pages, dates, 10 authors, 9 keywords, 11 MeSH terms, 3 funders, 50 references.

Cite

This paper

Pasniceanu, I.-S., Atwal, M. S., Santos Souza, C. D., Moll, T., King, M., Treanor, C., Cabezas de la Fuente, D., West, R. J., Ferraiuolo, L., & Livesey, M. R. (2026). Striatal neuron dysfunction in C9ORF72-FTD/ALS is driven by AIS and potassium channel dysregulation. Cell reports, 45(7), 117672. https://doi.org/10.1016/j.celrep.2026.117672

BibTeX

@article{pasniceanu2026striatal,
author = {Pasniceanu, Iris-Stefania and Atwal, Manpreet S. and Santos Souza, Cleide Dos and Moll, Tobias and King, Marianne and Treanor, Connie and Cabezas de la Fuente, Daniel and West, Ryan J.H. and Ferraiuolo, Laura and Livesey, Matthew R.},
title = {{Striatal neuron dysfunction in C9ORF72-FTD/ALS is driven by AIS and potassium channel dysregulation}},
journal = {Cell reports},
year = {2026},
month = jul,
volume = {45},
number = {7},
pages = {117672},
publisher = {Cell Press},
issn = {2211-1247},
doi = {10.1016/j.celrep.2026.117672},
url = {https://doi.org/10.1016/j.celrep.2026.117672},
pmid = {42412610},
pmcid = {PMC13415681}
}

RIS

TY - JOUR
AU - Pasniceanu, Iris-Stefania
AU - Atwal, Manpreet S.
AU - Santos Souza, Cleide Dos
AU - Moll, Tobias
AU - King, Marianne
AU - Treanor, Connie
AU - Cabezas de la Fuente, Daniel
AU - West, Ryan J.H.
AU - Ferraiuolo, Laura
AU - Livesey, Matthew R.
TI - Striatal neuron dysfunction in C9ORF72-FTD/ALS is driven by AIS and potassium channel dysregulation
T2 - Cell reports
J2 - Cell Rep
PY - 2026
DA - 2026/07/07
VL - 45
IS - 7
SP - 117672
SN - 2211-1247
PB - Cell Press
DO - 10.1016/j.celrep.2026.117672
UR - https://doi.org/10.1016/j.celrep.2026.117672
LA - en
ER -

CSL-JSON

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