Cited by 58Cell death mechanisms and regulationNeurological Disorders and TreatmentsSirtuins and Resveratrol in Medicine

Protective effects of ex‐527 on cerebral ischemia–reperfusion injury through necroptosis signaling pathway attenuation

Nikseresht, Sara, Khodagholi, Fariba, Ahmadiani, Abolhassan·2019·Journal of Cellular Physiology

Abstract

Necroptosis, a novel type of programmed cell death, is involved in ischemia–reperfusion‐induced brain injury. Sirtuin 1 (Sirt1), as a well‐known member of histone deacetylase class III, plays pivotal roles in inflammation, metabolism, and neuron loss in cerebral ischemia. We explored the relationship between Sirt1 and the necroptosis signaling pathway and its downstream events by administration of ex‐527, as a selective and potent inhibitor of Sirt1, and necrostatin‐1 (nec‐1), as a necroptosis inhibitor, in an animal model of focal cerebral ischemia. Our data showed different patterns of sirt1 and necroptosis critical regulators, including receptor‐interacting protein kinase 3 and mixed lineage kinase domain–like protein gene expressions in the prefrontal cortex and the hippocampus after ischemia–reperfusion. We found that ex‐527 microinjection reduces the infarction volume of ischemic brains and improves the survival rate, but not stroke‐associated neurological deficits. Additionally, treatment with ex‐527 effectively abolished the elevation of the critical regulators of necroptosis, whereas necroptosis inhibition through nec‐1 microinjection did not influence Sirt1 expression levels. Our data also demonstrated that the ex‐527 relieves ischemia‐induced perturbation of necroptosis‐associated metabolic enzymes activity in downstream. This study provides a new approach to the possible neuroprotective potential of ex‐527 orchestrated by necroptosis pathway inhibition to alleviate ischemia–reperfusion brain injury.

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Crossref · 10.1002/jcp.27055

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Authors
Nikseresht, S., Khodagholi, F., & Ahmadiani, A.
Affiliations
Shahid Beheshti University (IR)
Corresponding author
Ahmadiani, Abolhassan
Venue
Journal of Cellular Physiology
Publisher
Wiley
Published
2018-08-01
Volume
234
Issue
2
Pages
1816-1826
ISSN
  • 0021-9541 (ISSN-L)
  • 1097-4652
OpenAlex
W2885425411
Cited by
58
References
62
Citations by year
2026: 4 · 2025: 8 · 2024: 7 · 2023: 5 · 2022: 9 · 2021: 7 · 2020: 9 · 2019: 8 · 2018: 1
FWCI
2.22
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cellular Physiology (publishedVersion)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion)
Funders
Iran National Science Foundation (95004484)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Neuroscience › Neurology › Neurological Disorders and Treatments
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
Keywords
EX527, SIRT1 inhibition, necroptosis, cerebral ischemia-reperfusion injury, focal cerebral ischemia, necrostatin-1, RIPK3, MLKL, neuroprotection, infarct size, prefrontal cortex, hippocampus, programmed cell death
MeSH terms
Animals, Carbazoles, Disease Models, Animal, Energy Metabolism, Gene Expression Regulation, Hippocampus, Imidazoles, Indoles, Male, Protein Kinases, Signal Transduction, Reperfusion Injury, Cell Death, Rats, Wistar, Prefrontal Cortex, Neuroprotective Agents, Infarction, Middle Cerebral Artery, Receptor-Interacting Protein Serine-Threonine Kinases, Sirtuin 1

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