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Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis

  • Authors:
    • Xiankuan Xie
    • Yuxiang Xiao
    • Kan Xu
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    Affiliations: Department of Orthopedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310053, P.R. China
    Copyright: © Xie et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 1432
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    Published online on: October 11, 2021
       https://doi.org/10.3892/etm.2021.10867
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Abstract

Spinal cord injury (SCI) causes damage to the spinal cord owing to trauma or disease and myelinated fiber tracts that transmit sensation and motor signals to and from the brain. Circular RNAs (circRNAs) are a recently discovered class of regulatory molecules, and their roles in SCI are still unknown. circRNA_014301 was indicated to be differentially expressed in the spinal cord at the site of SCI in a rat model. To analyze the role of circRNA_014301 in SCI, we exposed rat adrenal pheochromocytoma PC12 cells were exposed to increasing concentrations of lipopolysaccharide (LPS) and to construct a PC12 cell inflammatory model. Cell Counting Kit‑8 assay was used to analyze cell viability. Reverse transcription‑quantitative PCR and ELISA were used to detect the expression of inflammatory factors (IL‑1β, IL‑6 and TNF‑α). Annexin V‑FITC/PI double staining was employed to detect cell apoptosis, and western blotting was performed to detect the expression of apoptotic proteins (Bax/Bcl‑2/cleaved caspase‑3) and NF‑κB. The results demonstrated that LPS induced inflammation in PC12 cells as evidenced by the reduced cell proliferation and enhanced expression of inflammatory and apoptotic factors under increasing LPS concentrations. Western blotting analyses indicated that circRNA_014301 induced the expression of p‑NF‑κB/NF‑κB, Bax and cleaved caspase‑3, and decreased the expression of Bcl‑2 following LPS‑induced inflammation, and this apoptosis‑promoting effect was relieved by small interfering‑RNA‑mediated knockdown of circRNA_014301. Thus, circRNA_014301 silencing alleviated apoptosis and inflammation in PC12 cells. SCI is invariably associated with spinal cord inflammation, and LPS was used to stimulate apoptosis and inflammatory injury in PC12 cells, and create a cell model of SCI. By promoting PC12 cell apoptosis under inflammatory conditions, it was indicated that circRNA_014301 may suppress SCI. Therefore, circRNA_014301 may represent a potential target for SCI diagnosis and therapy.
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Copy and paste a formatted citation
Spandidos Publications style
Xie X, Xiao Y and Xu K: Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis. Exp Ther Med 22: 1432, 2021.
APA
Xie, X., Xiao, Y., & Xu, K. (2021). Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis. Experimental and Therapeutic Medicine, 22, 1432. https://doi.org/10.3892/etm.2021.10867
MLA
Xie, X., Xiao, Y., Xu, K."Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis". Experimental and Therapeutic Medicine 22.6 (2021): 1432.
Chicago
Xie, X., Xiao, Y., Xu, K."Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis". Experimental and Therapeutic Medicine 22, no. 6 (2021): 1432. https://doi.org/10.3892/etm.2021.10867
Copy and paste a formatted citation
x
Spandidos Publications style
Xie X, Xiao Y and Xu K: Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis. Exp Ther Med 22: 1432, 2021.
APA
Xie, X., Xiao, Y., & Xu, K. (2021). Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis. Experimental and Therapeutic Medicine, 22, 1432. https://doi.org/10.3892/etm.2021.10867
MLA
Xie, X., Xiao, Y., Xu, K."Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis". Experimental and Therapeutic Medicine 22.6 (2021): 1432.
Chicago
Xie, X., Xiao, Y., Xu, K."Mechanism underlying circularRNA_014301‑mediated regulation of neuronal cell inflammation and apoptosis". Experimental and Therapeutic Medicine 22, no. 6 (2021): 1432. https://doi.org/10.3892/etm.2021.10867
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