Cited by 28Alzheimer's disease research and treatmentsMicroRNA in disease regulationDementia and Cognitive Impairment Research

MicroRNAs targeting Nicastrin regulate Aβ production and are affected by target site polymorphisms

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Delay, Charlotte, Dorval, Véronique, Fok, Alice, Grenier-Boley, Benjamin, Lambert, Jean-Charles, Hsiung, G.-Y., Hébert, Sébastien S.·2014·Frontiers in Molecular Neuroscience

Abstract

Despite the growing number of genome-wide association studies, the involvement of polymorphisms in microRNA target sites (polymiRTS) in Alzheimer's disease (AD) remains poorly investigated. Recently, we have shown that AD-associated single-nucleotide polymorphisms (SNPs) present in the 3' untranslated region (3'UTR) of amyloid precursor protein (APP) could directly affect miRNA function. In theory, loss of microRNA (miRNA) function could lead to risk for AD by increasing APP expression and Aβ peptide production. In this study, we tested the hypothesis that Nicastrin, a γ-secretase subunit involved in Aβ generation, could be regulated by miRNAs, and consequently affected by 3'UTR polymorphisms. Bioinformatic analysis identified 22 putative miRNA binding sites located in or near Nicastrin 3'UTR polymorphisms. From these miRNA candidates, six were previously shown to be expressed in human brain. We identified miR-24, miR-186, and miR-455 as regulators of Nicastrin expression, both in vitro and under physiological conditions in human cells, which resulted in altered Aβ secretion. Using luciferase-based assays, we further demonstrated that rs113810300 and rs141849450 SNPs affected miRNA-mediated repression of Nicastrin. Notably, rs141849450 completely abolished the miR-455-mediated repression of Nicastrin. Finally, the rs141849450 variant was identified in 1 out of 511 AD cases but not in 631 controls. These observations set the stage for future studies exploring the role of miRNAs and 3'UTR polymorphisms in AD.

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Crossref · 10.3389/fnmol.2014.00067

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  • miR-186 represses Aβ generation at both β- and γ-cleavage steps.

    “Recently, nicastrin, a subunit of γ-secretase complex, was identified as a target of miR-186 (Delay et al. 2014), suggesting that miR-186 represses Aβ generation at both β- and γ-cleavage steps.”

    From miR‐186 is decreased in aged brain and suppresses <scp>BACE</scp>1 expression (2016) · cites this paper as Delay et al. 2014

  • Nicastrin, a subunit of γ-secretase complex, is a target of miR-186.

    “Recently, nicastrin, a subunit of γ-secretase complex, was identified as a target of miR-186 (Delay et al. 2014), suggesting that miR-186 represses Aβ generation at both β- and γ-cleavage steps.”

    From miR‐186 is decreased in aged brain and suppresses <scp>BACE</scp>1 expression (2016) · cites this paper as Delay et al. 2014

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Authors
Delay, C., Dorval, V., Fok, A., Grenier-Boley, B., Lambert, J.-C., Hsiung, G.-Y., & Hébert, S. S.
Affiliations
  • Inserm (FR)
  • Université Laval (CA)
  • University of British Columbia (CA)
Venue
Frontiers in Molecular Neuroscience
Published
2014-07-18
Volume
7
Pages
67-67
ISSN
1662-5099 (ISSN-L)
OpenAlex
W1968783454
Cited by
28
References
26
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 2 · 2020: 2 · 2019: 3 · 2018: 2 · 2017: 4 · 2016: 3 · 2015: 4
FWCI
2.44
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Molecular Neuroscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Alzheimer Society
  • Canadian Institutes of Health Research
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
microRNA, nicastrin, Alzheimer's disease, amyloid-beta production, 3' untranslated region, miR-24, miR-186, miR-455, gamma-secretase, APP, single nucleotide polymorphisms, microRNA regulation of gene expression

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