Cited by 34RNA modifications and cancerAlzheimer's disease research and treatmentsMitochondrial Function and Pathology

Streptozotocin-induced astrocyte mitochondrial dysfunction is ameliorated by FTO inhibitor MO-I-500

Cockova, Zuzana, Honc, Ondrej, Telensky, Petr, Olsen, Mark J., Novotny, Jiri·2021·ACS Chemical Neuroscience

Abstract

The pathogenesis of Alzheimer's disease (AD), the most prevalent form of dementia, remains unclear. Over the past few years, evidence has accumulated indicating that perturbed cerebral bioenergetics and neuroinflammation may compromise cognitive functions and precedes the onset of AD and that impaired function of glial cells can likely contribute to the development of the disease. Recently, N6-methyladenosine (m6A) modification of RNA has been implicated in the regulation of different processes in the brain and to play a potential role in neurodegeneration. In the present study, we investigated the potential role of the m6A machinery enzymes in a streptozotocin (STZ) model of AD in human astrocytoma CCF-STTG1 cells. We observed that STZ-treated astrocytes expressed significantly higher levels of m6A demethylase fat mass and obesity-associated protein (FTO) and m6A reader YTHDF1 (YTH domain-containing family protein 1). Our experiments revealed that MO-I-500, a novel pharmacological inhibitor of FTO, can strongly reduce the adverse effects of STZ. Inhibition of FTO enhanced the survival of cells exposed to STZ and suppressed oxidative stress, apoptosis, elevated expression of glial fibrillary acidic protein, mitochondrial dysfunction, and bioenergetic disturbances induced by this compound. Overall, the results of this study indicate that perturbed m6A signaling may be contributing to AD pathogenesis, likely by compromising astrocyte bioenergetics.

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Crossref · 10.1021/acschemneuro.1c00063

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Authors
Cockova, Z., Honc, O., Telensky, P., Olsen, M. J., & Novotny, J.
Affiliations
  • Department of Physiology, Faculty of Science, Charles University, 128 00 Prague, Czech Republic
  • Midwestern University (US)
Venue
ACS Chemical Neuroscience
Published
2021-09-07
Volume
12
Issue
20
Pages
3818-3828
ISSN
1948-7193 (ISSN-L)
OpenAlex
W3198600441
Cited by
34
References
52
Citations by year
2026: 6 · 2025: 4 · 2024: 9 · 2023: 8 · 2022: 6 · 2021: 1
FWCI
1.88
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Chemical Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministerstvo ??kolstv??, Ml??de??e a T??lov??chovy (LQ1605)
  • Univerzita Karlova v Praze (SVV-260571/2020)
  • Grantov?? Agentura, Univerzita Karlova (1320218)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA modifications and cancer
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
Alzheimer's disease, streptozotocin, astrocytes, mitochondrial dysfunction, FTO, N6-methyladenosine, m6A demethylation, YTHDF1, oxidative stress, apoptosis, glial fibrillary acidic protein, neuroinflammation, astrocyte survival
MeSH terms
Alpha-Ketoglutarate-Dependent Dioxygenase FTO, Adenosine, Astrocytes, Humans, Mitochondria, Streptozocin

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