Cited by 44Calpain Protease Function and RegulationProtein Kinase Regulation and GTPase SignalingNeurological Disorders and Treatments

Zinc induces CDK5 activation and neuronal death through CDK5-Tyr15 phosphorylation in ischemic stroke

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Tuo, Qing-Zhang, Liuyang, Zhen-Yu, Lei, Peng, Yan, Xiong, Shentu, Yang-Ping, Liang, Jia-Wei, Zhou, Huan, Pei, Lei +7 more·2018·Cell Death & Disease

Abstract

CDK5 activation promotes ischemic neuronal death in stroke, with the recognized activation mechanism being calpain-dependent p35 cleavage to p25. Here we reported that CDK5-Tyr15 phosphorylation by zinc induced CDK5 activation in brain ischemic injury. CDK5 activation and CDK5-Tyr15 phosphorylation were observed in the hippocampus of the rats that had been subjected to middle cerebral artery occlusion, both of which were reversed by pretreatment with zinc chelator; while p35 cleavage and calpain activation in ischemia were not reversed. Zinc incubation resulted in CDK5-Tyr15 phosphorylation and CDK5 activation, without increasing p35 cleavage in cultured cells. Site mutation experiment confirmed that zinc-induced CDK5 activation was dependent on Tyr15 phosphorylation. Further exploration showed that Src kinase contributed to zinc-induced Tyr15 phosphorylation and CDK5 activation. Src kinase inhibition or expression of an unphosphorylable mutant Y15F-CDK5 abolished Tyr15 phosphorylation, prevented CDK5 activation and protected hippocampal neurons from ischemic insult in rats. We conclude that zinc-induced CDK5-Tyr15 phosphorylation underlies CDK5 activation and promotes ischemic neuronal death in stroke.

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Authors
Tuo, Q.-Z., Liuyang, Z.-Y., Lei, P., Yan, X., Shentu, Y.-P., Liang, J.-W., Zhou, H., Pei, L., Xiong, Y., Hou, T.-Y., Zhou, X.-W., Wang, Q., Wang, J.-Z., Wang, X.-C., & Liu, R.
Affiliations
  • Sichuan University (CN)
  • Huazhong University of Science and Technology (CN)
Corresponding author
Liu, Rong
Venue
Cell Death & Disease
Published
2018-08-29
Volume
9
Issue
9
Pages
870-870
ISSN
2041-4889 (ISSN-L)
OpenAlex
W2889261590
Cited by
44
References
45
Citations by year
2026: 6 · 2025: 4 · 2024: 5 · 2023: 4 · 2022: 9 · 2021: 6 · 2020: 6 · 2019: 4
FWCI
2.21
Type
journal article
Language
en
Open access
Locations
  • Cell Death and Disease (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • National Natural Science Foundation of China (81471304, 81571078)
  • Natural Science Foundation of Hubei Province (2017CFA065)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Calpain Protease Function and Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Neuroscience › Neurology › Neurological Disorders and Treatments
Keywords
zinc, cyclin-dependent kinase 5, ischemic stroke, neuronal cell death, Src kinase, calpain, zinc chelators, hippocampal neurons, middle cerebral artery occlusion, neuroprotection
MeSH terms
Animals, Calpain, Brain Ischemia, Hippocampus, Male, Mice, Inbred C57BL, Neurons, Phosphorylation, Zinc, Cell Death, Rats, Sprague-Dawley, src-Family Kinases, Infarction, Middle Cerebral Artery, Stroke, Cyclin-Dependent Kinase 5, Mice, Rats

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