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@ARTICLE{Llorens:139770,
author = {Llorens, Franc and Thüne, Katrin and Martí, Eulàlia and
Kanata, Eirini and Dafou, Dimitra and Díaz-Lucena, Daniela
and Vivancos, Ana and Shomroni, Orr and Zafar, Saima and
Schmitz, Matthias and Michel, Uwe and Fernández-Borges,
Natalia and Andréoletti, Olivier and Del Río, José
Antonio and Díez, Juana and Fischer, Andre and Bonn, Stefan
and Sklaviadis, Theodoros and Torres, Juan Maria and Ferrer,
Isidre and Zerr, Inga},
title = {{R}egional and subtype-dependent mi{RNA} signatures in
sporadic {C}reutzfeldt-{J}akob disease are accompanied by
alterations in mi{RNA} silencing machinery and biogenesis.},
journal = {PLoS pathogens},
volume = {14},
number = {1},
issn = {1553-7374},
address = {Lawrence, Kan.},
publisher = {PLoS},
reportid = {DZNE-2020-06092},
pages = {e1006802},
year = {2018},
abstract = {Increasing evidence indicates that microRNAs (miRNAs) are
contributing factors to neurodegeneration. Alterations in
miRNA signatures have been reported in several
neurodegenerative dementias, but data in prion diseases are
restricted to ex vivo and animal models. The present study
identified significant miRNA expression pattern alterations
in the frontal cortex and cerebellum of sporadic
Creutzfeldt-Jakob disease (sCJD) patients. These changes
display a highly regional and disease subtype-dependent
regulation that correlates with brain pathology. We
demonstrate that selected miRNAs are enriched in sCJD
isolated Argonaute(Ago)-binding complexes in disease,
indicating their incorporation into RNA-induced silencing
complexes, and further suggesting their contribution to
disease-associated gene expression changes. Alterations in
the miRNA-mRNA regulatory machinery and perturbed levels of
miRNA biogenesis key components in sCJD brain samples
reported here further implicate miRNAs in sCJD gene
expression (de)regulation. We also show that a subset of
sCJD-altered miRNAs are commonly changed in Alzheimer's
disease, dementia with Lewy bodies and fatal familial
insomnia, suggesting potential common mechanisms underlying
these neurodegenerative processes. Additionally, we report
no correlation between brain and cerebrospinal fluid (CSF)
miRNA-profiles in sCJD, indicating that CSF-miRNA profiles
do not faithfully mirror miRNA alterations detected in brain
tissue of human prion diseases. Finally, utilizing a sCJD
MM1 mouse model, we analyzed the miRNA deregulation patterns
observed in sCJD in a temporal manner. While fourteen
sCJD-related miRNAs were validated at clinical stages, only
two of those were changed at early symptomatic phase,
suggesting that the miRNAs altered in sCJD may contribute to
later pathogenic processes. Altogether, the present work
identifies alterations in the miRNA network, biogenesis and
miRNA-mRNA silencing machinery in sCJD, whereby
contributions to disease mechanisms deserve further
investigation.},
keywords = {Adult / Aged / Aged, 80 and over / Brain: metabolism /
Brain: pathology / Case-Control Studies / Creutzfeldt-Jakob
Syndrome: classification / Creutzfeldt-Jakob Syndrome:
genetics / Creutzfeldt-Jakob Syndrome: pathology / Female /
Gene Expression Profiling / Humans / Male / MicroRNAs:
biosynthesis / MicroRNAs: genetics / Middle Aged / RNA
Interference / Transcriptome / MicroRNAs (NLM Chemicals)},
cin = {AG Zerr / Ext UMG Zerr / AG Bonn 1 / AG Fischer 1},
ddc = {610},
cid = {I:(DE-2719)1440011-1 / I:(DE-2719)5000037 /
I:(DE-2719)1410003 / I:(DE-2719)1410002},
pnm = {344 - Clinical and Health Care Research (POF3-344) / 342 -
Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-344 / G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29357384},
pmc = {pmc:PMC5794191},
doi = {10.1371/journal.ppat.1006802},
url = {https://pub.dzne.de/record/139770},
}