Open Access

Artemisia iwayomogi (Dowijigi) inhibits lipopolysaccharide‑induced inflammation in RAW264.7 macrophages by suppressing the NF‑κB signaling pathway

  • Authors:
    • Seong Min Kim
    • Preethi Vetrivel
    • Hun Hwan Kim
    • Sang Eun Ha
    • Venu Venkatarame Gowda Saralamma
    • Gon Sup Kim
  • View Affiliations

  • Published online on: January 27, 2020     https://doi.org/10.3892/etm.2020.8472
  • Pages: 2161-2170
  • Copyright: © Kim et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Inflammatory diseases are an important health concern and have a growing incidence worldwide. Thus, developing novel and safe drugs to treat these disorders remains an important pursuit. Artemisia iwayomogi, locally known as Dowijigi (DJ), is a perennial herb found primarily in Korea and is used to treat various diseases such as hepatitis, inflammation and immune disorders. In the present study, the anti‑inflammatory effects of a polyphenolic extract from the DJ flower (PDJ) in lipopolysaccharide (LPS)‑stimulated mouse macrophage RAW264.7 cells were investigated. Cell cytotoxicity was assessed using the MTT assay. The production of nitric oxide (NO) and prostaglandin E2 (PGE2) was measured by Griess and ELISA analysis, respectively. The expression levels of inducible nitric oxide (iNOS) and cyclooxygenase‑2 (COX2) were examined by western blot analysis. Reverse transcription‑quantitative PCR was performed to detect the mRNA expression levels of pro‑inflammatory cytokines, including tumor necrosis factor α (TNFα), interleukin (IL)‑6 and IL‑1β, as well as COX2 and iNOS. The production of NO and PGE2 was significantly decreased following treatment with PDJ. The mRNA expression levels of TNFα, IL‑6, IL‑1β, COX2 and iNOS were significantly decreased in LPS‑induced PDJ co‑treated cells compared with the group treated with LPS alone. Western blot analysis indicated that PDJ downregulated the LPS‑induced expression of iNOS and COX2, as well as the expression of NF‑κB proteins. In conclusion, the present study demonstrated that PDJ exerted anti‑inflammatory effects in LPS‑induced macrophage cells by suppressing the NF‑κB signaling pathway. Therefore, PDJ may be used as a potential therapeutic agent in inflammation.
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March 2020
Volume 19 Issue 3

Print ISSN: 1792-0981
Online ISSN:1792-1015

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APA
Kim, S.M., Vetrivel, P., Kim, H.H., Ha, S.E., Venkatarame Gowda Saralamma, V., & Kim, G.S. (2020). Artemisia iwayomogi (Dowijigi) inhibits lipopolysaccharide‑induced inflammation in RAW264.7 macrophages by suppressing the NF‑κB signaling pathway. Experimental and Therapeutic Medicine, 19, 2161-2170. https://doi.org/10.3892/etm.2020.8472
MLA
Kim, S. M., Vetrivel, P., Kim, H. H., Ha, S. E., Venkatarame Gowda Saralamma, V., Kim, G. S."Artemisia iwayomogi (Dowijigi) inhibits lipopolysaccharide‑induced inflammation in RAW264.7 macrophages by suppressing the NF‑κB signaling pathway". Experimental and Therapeutic Medicine 19.3 (2020): 2161-2170.
Chicago
Kim, S. M., Vetrivel, P., Kim, H. H., Ha, S. E., Venkatarame Gowda Saralamma, V., Kim, G. S."Artemisia iwayomogi (Dowijigi) inhibits lipopolysaccharide‑induced inflammation in RAW264.7 macrophages by suppressing the NF‑κB signaling pathway". Experimental and Therapeutic Medicine 19, no. 3 (2020): 2161-2170. https://doi.org/10.3892/etm.2020.8472