期刊
MOLECULES
卷 27, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/molecules27010129
关键词
oncostatin M; dexamethasone; neutrophil-like differentiated HL-60 cells; PI3K; Akt; NF-kappa B
资金
- National Research Foundation of Korea (NRF) - Korean government (MSIT) [2020R1A5A2019413]
This study investigated the mechanism of oncostatin M (OSM) production in neutrophils and found that dexamethasone can downregulate OSM synthesis by inhibiting the PI3K/Akt/NF-kB signaling cascade. This highlights the potential of dexamethasone as a treatment for inflammatory diseases.
Oncostatin M (OSM) plays a role in various inflammatory reactions, and neutrophils are the main source of OSM in pulmonary diseases. However, there is no evidence showing the mechanism of OSM production in neutrophils. While dexamethasone (Dex) has been known to exert anti-inflammatory activity in various fields, the precise mechanisms of OSM downregulation by Dex in neutrophils remain to be determined. Here, we examined how OSM is produced in neutrophil-like differentiated HL-60 cells. Enzyme-linked immunosorbent assay, real-time polymerase chain reaction, and Western blot analysis were utilized to assess the potential of Dex. Granulocyte-macrophage colony-stimulating factor (GM-CSF) stimulation resulted in OSM elevation in neutrophil-like dHL-60 cells. OSM elevation induced by GM-CSF is regulated by phosphatidylinositol 3-kinase (PI3K)/Akt/nuclear factor (NF)-kB signal cascades. GM-CSF stimulation upregulated phosphorylated levels of PI3K or Akt or NF-kappa B in neutrophil-like dHL-60 cells. Treatment with Dex decreased OSM levels as well as the phosphorylated levels of PI3K or Akt or NF-kappa B in neutrophil-like dHL-60 cells. Our findings show the potential of Dex in the treatment of inflammatory diseases via blocking of OSM.
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