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@ARTICLE{Zimyanin:285016,
author = {Zimyanin, Vitaly and Dash, Banaja P and Simolka, Theresa
and Glaß, Hannes and Pal, Arun and Haidle, Felix and
Zarnack, Kathi and Verma, Riya and Khatri, Vivek and
Deppmann, Christopher and Zunder, Eli and Müller-McNicoll,
Michaela and Redemann, Stefanie and Hermann, Andreas},
title = {{C}ompartment-specific transcriptome of motor neurons
reveals impaired extracellular matrix signaling and
activated cell cycle kinases in {FUS}-{ALS}.},
journal = {Neurobiology of disease},
volume = {219},
issn = {0969-9961},
address = {[Amsterdam]},
publisher = {Elsevier},
reportid = {DZNE-2026-00142},
pages = {107268},
year = {2026},
abstract = {Mutations in FUSED IN SARCOMA (FUS) cause juvenile-onset
amyotrophic lateral sclerosis (ALS). Early pathogenesis of
FUS-ALS involves impaired transcription and splicing, DNA
damage response, and axonal degeneration. However, the
molecular pathophysiology and the link between somatic and
axonal phenotypes are still poorly understood. We evaluated
whether compartment-specific transcriptome differences could
distinguish and drive early axonal degeneration. We used
iPSC-derived motor neurons (MNs) coupled with microfluidic
approaches to generate RNA-sequencing profiles from axonal
and somatodendritic compartments. We demonstrate that the
axonal transcriptome is unique and distinct, with RNA
metabolism, extracellular secretion, and matrix disassembly
pathways particularly enriched in distal axonal
compartments. FUS mutation leads to changes in distinct
pathways that were clustered in only a few distinct
protein-protein interaction (PPI) networks. Somatodendritic
changes upon FUS mutation include WNT signaling,
mitochondrial, extracellular matrix (ECM)-, and
synapse-related functions. In contrast, analysis of the
axonal transcriptome in mutant MNs centers on the PLK1
pathway, mitochondrial gene expression, and regulation of
inflammation. Comparison to CLIP-seq data revealed a
significant enrichment for PLK1 and DNA replication pathways
in axons. PLK1 upregulation did not activate cell-cycle
re-entry but contributed to mutant MNs survival, and its
inhibition increased neuronal cell death. We propose that
upregulation of PLK1 represents an early event in the
pathogenesis of ALS and could act in response to DNA damage,
mitochondrial damage, and immune response activation in the
affected cells. Additionally, downregulation of ECM pathways
in the somatodendritic compartment and axons could explain
strongly compromised dynamics of axonal outgrowth. Overall,
we provide a novel valuable resource of the potential
targets and affected processes changed in the specific
compartments of FUS-ALS motor neurons.},
keywords = {Motor Neurons: metabolism / Motor Neurons: pathology /
RNA-Binding Protein FUS: genetics / RNA-Binding Protein FUS:
metabolism / Amyotrophic Lateral Sclerosis: genetics /
Amyotrophic Lateral Sclerosis: metabolism / Amyotrophic
Lateral Sclerosis: pathology / Transcriptome / Extracellular
Matrix: metabolism / Humans / Cell Cycle Proteins:
metabolism / Cell Cycle Proteins: genetics / Animals /
Signal Transduction: physiology / Axons: metabolism /
Induced Pluripotent Stem Cells: metabolism / Amyotrophic
lateral sclerosis (Other) / Axon degeneration (Other) /
Axonal outgrowth (Other) / Axonal transcriptome (Other) /
Cell cycle (Other) / DNA damage, PLK1 (Other) / ECM (Other)
/ Induced pluripotent stem cells (Other) / RNA sequencing
(Other) / RNA-Binding Protein FUS (NLM Chemicals) / Cell
Cycle Proteins (NLM Chemicals) / FUS protein, human (NLM
Chemicals)},
cin = {AG Hermann},
ddc = {570},
cid = {I:(DE-2719)1511100},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41525886},
doi = {10.1016/j.nbd.2026.107268},
url = {https://pub.dzne.de/record/285016},
}