Cited by 55Circular RNAs in diseasesNeuroinflammation and Neurodegeneration MechanismsMicroRNA in disease regulation

Circular RNA circPTK2 regulates oxygen-glucose deprivation-activated microglia-induced hippocampal neuronal apoptosis via miR-29b-SOCS-1-JAK2/STAT3-IL-1β signaling

Wang, Huilin, Li, Zheng, Gao, Jingyan, Liao, Qingwu·2019·International Journal of Biological Macromolecules

Abstract

Oxygen-glucose deprivation (OGD)-activated microglia contribute to neuronal apoptosis via releasing pro-inflammatory cytokines, and some miRNAs have been reported to be involved in this process. Circular RNAs (circRNAs) have been reported to function as miRNA sponges, but it remains unknown whether and how circRNAs contribute to OGD-activated microglia-induced neuronal apoptosis. Here, we investigated the function and relationship of miR-29b and circPTK2 in OGD-activated microglia-induced neuronal apoptosis. We found upregulation of TNF-α and IL-1β, and downregulation of miR-29b in OGD-activated microglia. miR-29b inhibited OGD-activated microglia-induced neuronal apoptosis. Meanwhile, miR-29b promoted SOCS-1 expression, and suppressed JAK2/STAT3 signaling. In addition, inhibition of JAK2/STAT3 signaling downregulated IL-1β expression, while upregulation of miR-29b or SOCS-1 also inhibited IL-1β production. IL-1β was confirmed to be an apoptosis inducer of hippocampal neurons. Moreover, either SOCS-1 upregulation or blockade of JAK2/STAT3 signaling suppressed OGD-activated microglia-induced neuronal apoptosis. These data suggest that miR-29b inhibits OGD-activated microglia-induced neuronal apoptosis via inducing SOCS-1 expression, blocking JNK2/STAT3 signaling, and inhibiting IL-1β production. circPTK2 was confirmed to inhibit miR-29b expression in OGD model by directly binding to miR-29b. Function assay showed that circPTK2 regulated microglia-induced neuronal apoptosis via sponging miR-29b. Collectively, these findings suggest that circPTK2 regulates OGD-activated microglia-induced neuronal apoptosis via miR-29b-SOCS-1-JAK2/STAT3-IL-1β signaling.

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Crossref · 10.1016/j.ijbiomac.2019.02.041

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Authors
Wang, H., Li, Z., Gao, J., & Liao, Q.
Affiliations
  • Fudan University (CN)
  • Shanghai Medical College of Fudan University (CN)
Corresponding author
Liao, Qingwu
Venue
International Journal of Biological Macromolecules
Publisher
Elsevier BV
Published
2019-05
Volume
129
Pages
488-496
ISSN
0141-8130 (ISSN-L)
OpenAlex
W2912886076
Cited by
55
References
50
Citations by year
2026: 3 · 2025: 2 · 2024: 6 · 2023: 9 · 2022: 13 · 2021: 14 · 2020: 7 · 2019: 1
FWCI
2.89
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Biological Macromolecules (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Circular RNAs in diseases
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
Keywords
circPTK2, circular RNA, miR-29b, oxygen-glucose deprivation, microglia, neuronal apoptosis, hippocampal neurons, SOCS1, JAK2/STAT3 signaling, IL-1β, TNF-α, microRNA sponge, neuroinflammation, ischemic stroke
MeSH terms
Suppressor of Cytokine Signaling 1 Protein, RNA, Circular, Animals, Female, Glucose, Hippocampus, Neurons, Oxygen, Pregnancy, RNA, Signal Transduction, Cell Hypoxia, Up-Regulation, Rats, Sprague-Dawley, Apoptosis, Microglia, MicroRNAs, STAT3 Transcription Factor, Rats, Focal Adhesion Kinase 1, Interleukin-1beta, Janus Kinase 2

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