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Article

Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis

  • Authors:
    • Huasong Luo
    • Rui Zhang
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    Affiliations: Department of Orthopedics, The First People's Hospital of Jingzhou (First Affiliated Hospital of Yangtze University), Jingzhou, Hubei 434000, P.R. China, Department of Orthopedics, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, Gansu 730050, P.R. China
  • Article Number: 72
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    Published online on: November 25, 2020
       https://doi.org/10.3892/etm.2020.9504
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Abstract

The mechanism of action of synovitis, as the vital pathological process of rheumatoid arthritis and osteoarthritis, remains to be elucidated. The effects and the mechanism of icariin (ICA), which is a promising therapeutic agent in synovitis, was investigated in the present study. In addition, ferroptosis, a vital cell process involved in several diseases, was also studied in synovitis for the first time. Lipopolysaccharide (LPS)‑induced synoviocytes served as a synovitis cell model. The cells were divided into control, LPS and experimental groups and were treated with different concentrations of ICA. Cell viability was determined by Cell Counting Kit‑8 assay and cell death was determined by flow cytometry. The expression levels of proteins (GPX4, SLC7A11, SLC3A2L, TRF, Nrf2 and NCOA4) were measured by western blotting. Quantification of malondialdehyde (MDA), iron and glutathione peroxidase 4 (GPX4) activity levels were performed via using corresponding assay kits. Cell death was increased, and cell viability was decreased in LPS‑induced synoviocytes. Furthermore, MDA levels and iron content were elevated and GPX levels was reduced in LPS‑induced synoviocytes. Transferrin receptor protein 1 and nuclear receptor coactivator 4 were upregulated and proteins of the Xc‑/GPX4 axis, as well as nuclear factor erythroid 2‑related factor 2, were decreased by LPS treatment. All aforementioned LPS affects were alleviated by ICA via a concentration‑dependent manner. ICA counteracted the effects of RSL3, a ferroptosis activator, on cell viability, lipid peroxidation, iron content and relative protein expression of ferroptosis in synoviocytes. ICA protects the cells from death in synoviocytes induced by LPS, via the inhibition of ferroptosis by activating the Xc‑/GPX4 axis, which can be exploited as a new therapeutic strategy for synovitis.
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Copy and paste a formatted citation
Spandidos Publications style
Luo H and Zhang R: Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis. Exp Ther Med 21: 72, 2021.
APA
Luo, H., & Zhang, R. (2021). Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis. Experimental and Therapeutic Medicine, 21, 72. https://doi.org/10.3892/etm.2020.9504
MLA
Luo, H., Zhang, R."Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis". Experimental and Therapeutic Medicine 21.1 (2021): 72.
Chicago
Luo, H., Zhang, R."Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis". Experimental and Therapeutic Medicine 21, no. 1 (2021): 72. https://doi.org/10.3892/etm.2020.9504
Copy and paste a formatted citation
x
Spandidos Publications style
Luo H and Zhang R: Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis. Exp Ther Med 21: 72, 2021.
APA
Luo, H., & Zhang, R. (2021). Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis. Experimental and Therapeutic Medicine, 21, 72. https://doi.org/10.3892/etm.2020.9504
MLA
Luo, H., Zhang, R."Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis". Experimental and Therapeutic Medicine 21.1 (2021): 72.
Chicago
Luo, H., Zhang, R."Icariin enhances cell survival in lipopolysaccharide‑induced synoviocytes by suppressing ferroptosis via the Xc‑/GPX4 axis". Experimental and Therapeutic Medicine 21, no. 1 (2021): 72. https://doi.org/10.3892/etm.2020.9504
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