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@ARTICLE{Dash:165289,
author = {Dash, Banaja and Freischmidt, Axel and Weishaupt, Jochen H
and Hermann, Andreas},
title = {{D}ownstream {E}ffects of {M}utations in {SOD}1 and
{TARDBP} {C}onverge on {G}ene {E}xpression {I}mpairment in
{P}atient-{D}erived {M}otor {N}eurons.},
journal = {International journal of molecular sciences},
volume = {23},
number = {17},
issn = {1422-0067},
address = {Basel},
publisher = {Molecular Diversity Preservation International},
reportid = {DZNE-2022-01582},
pages = {9652},
year = {2022},
note = {CC BY: https://creativecommons.org/licenses/by/4.0/},
abstract = {Amyotrophic Lateral Sclerosis (ALS) is a progressive and
fatal neurodegenerative disease marked by death of motor
neurons (MNs) present in the spinal cord, brain stem and
motor cortex. Despite extensive research, the reason for
neurodegeneration is still not understood. To generate novel
hypotheses of putative underlying molecular mechanisms, we
used human induced pluripotent stem cell (hiPSCs)-derived
motor neurons (MNs) from SOD1- and TARDBP (TDP-43
protein)-mutant-ALS patients and healthy controls to perform
high-throughput RNA-sequencing (RNA-Seq). An integrated
bioinformatics approach was employed to identify
differentially expressed genes (DEGs) and key pathways
underlying these familial forms of the disease (fALS). In
TDP43-ALS, we found dysregulation of transcripts encoding
components of the transcriptional machinery and transcripts
involved in splicing regulation were particularly affected.
In contrast, less is known about the role of SOD1 in RNA
metabolism in motor neurons. Here, we found that many
transcripts relevant for mitochondrial function were
specifically altered in SOD1-ALS, indicating that
transcriptional signatures and expression patterns can vary
significantly depending on the causal gene that is mutated.
Surprisingly, however, we identified a clear downregulation
of genes involved in protein translation in SOD1-ALS
suggesting that ALS-causing SOD1 mutations shift cellular
RNA abundance profiles to cause neural dysfunction.
Altogether, we provided here an extensive profiling of mRNA
expression in two ALS models at the cellular level,
corroborating the major role of RNA metabolism and gene
expression as a common pathomechanism in ALS.},
keywords = {Amyotrophic Lateral Sclerosis: genetics / DNA-Binding
Proteins: genetics / DNA-Binding Proteins: metabolism / Gene
Expression / Humans / Induced Pluripotent Stem Cells:
metabolism / Motor Neurons: metabolism / Mutation /
Neurodegenerative Diseases: metabolism / RNA: metabolism /
Superoxide Dismutase-1: genetics / RNA sequencing (RNA-Seq)
(Other) / amyotrophic lateral sclerosis (ALS) (Other) /
differentially expressed genes (DEG) (Other) / human induced
pluripotent stem cells (iPSC) (Other) / motor neurons (MN)
(Other) / protein-protein interaction (PPI) (Other) /
DNA-Binding Proteins (NLM Chemicals) / SOD1 protein, human
(NLM Chemicals) / TARDBP protein, human (NLM Chemicals) /
RNA (NLM Chemicals) / Superoxide Dismutase-1 (NLM
Chemicals)},
cin = {AG Hermann},
ddc = {540},
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:36077049},
pmc = {pmc:PMC9456253},
doi = {10.3390/ijms23179652},
url = {https://pub.dzne.de/record/165289},
}