Cited by 6MicroRNA in disease regulationParkinson's Disease Mechanisms and TreatmentsNeuroinflammation and Neurodegeneration Mechanisms

MicroRNA-593-5p contributes to cell death following exposure to 1-methyl-4-phenylpyridinium by targeting PTEN-induced putative kinase 1

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Yoo, Myungsik, Choi, Doo Chul, Murphy, Aleta, Ahsan, Atiq M., Junn, Eunsung·2023·Journal of Biological Chemistry

Abstract

Neurodegenerative diseases are characterized by a decline in neuronal function and structure, leading to neuronal death. Understanding the molecular mechanisms of neuronal death is crucial for developing therapeutics. MiRs are small noncoding RNAs that regulate gene expression by degrading target mRNAs or inhibiting translation. MiR dysregulation has been linked to many neurodegenerative diseases, but the underlying mechanisms are not well understood. As mitochondrial dysfunction is one of the common molecular mechanisms leading to neuronal death in many neurodegenerative diseases, here we studied miRs that modulate neuronal death caused by 1-methyl-4-phenylpyridinium (MPP + ), an inhibitor of complex I in mitochondria. We identified miR-593-5p, levels of which were increased in SH-SY5Y human neuronal cells, after exposure to MPP + . We found that intracellular Ca 2+ , but not of reactive oxygen species, mediated this miR-593-5p increase. Furthermore, we found the increase in miR-593-5p was due to enhanced stability, not increased transcription or miR processing. Importantly, we show the increase in miR-593-5p contributed to MPP + -induced cell death. Our data revealed that miR-593-5p inhibits a signaling pathway involving PTEN-induced putative kinase 1 (PINK1) and Parkin, two proteins responsible for the removal of damaged mitochondria from cells, by targeting the coding sequence of PINK1 mRNA. Our findings suggest that miR-593-5p contributes to neuronal death resulting from MPP + toxicity, in part, by impeding the PINK1/Parkin-mediated pathway that facilitates the clearance of damaged mitochondria. Taken together, our observations highlight the potential significance of inhibiting miR-593-5p as a therapeutic approach for neurodegenerative diseases.

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Crossref · 10.1016/j.jbc.2023.104709

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  • Of the five miRNAs experimentally confirmed to directly target PINK1, only miR-27b was among the top hits in the genome-wide screen.

    “However, of the five miRNAs that have been experimentally confirmed to directly target PINK1 [37–39], only miR-27b [32] was among the top hits in our genome-wide screen.”

    From miRNA family miR-29 inhibits PINK1-PRKN signaling via ATG9A (2026) · cites this paper as [39]

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Authors
Yoo, M., Choi, D. C., Murphy, A., Ahsan, A. M., & Junn, E.
Affiliations
Rutgers, The State University of New Jersey (US)
Corresponding author
Junn, Eunsung
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2023-05
Volume
299
Issue
5
Pages
104709
ISSN
0021-9258 (ISSN-L)
OpenAlex
W4365517465
Cited by
6
References
51
Citations by year
2026: 2 · 2025: 1 · 2024: 2 · 2023: 1
FWCI
0.76
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (NS70898, NS095003)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
microRNA, MPP+, PINK1, Parkin, neuronal cell death, mitochondrial dysfunction, mitochondrial complex I inhibition, intracellular calcium, miRNA stability, neurodegenerative diseases, SH-SY5Y cells, autophagy
MeSH terms
PTEN-Induced Putative Kinase, Humans, Neuroblastoma, Protein Kinases, 1-Methyl-4-phenylpyridinium, Cell Death, Apoptosis, MicroRNAs, Ubiquitin-Protein Ligases, Cell Line, Tumor

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