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Article

An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway

  • Authors:
    • Yutao Wang
    • Jing Li
    • Wen Yan
    • Qiaolian Chen
    • Zhihong Jiang
    • Rongping Zhang
    • Xiping Pan
    • Xinhua Wang
  • View Affiliations / Copyright

    Affiliations: State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, P.R. China, Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China, School of Pharmaceutical Science and Biomedical Engineering Research Center, Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China, Institute of Chinese Integrative Medicine, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
  • Pages: 523-531
    |
    Published online on: May 2, 2018
       https://doi.org/10.3892/mmr.2018.8947
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Abstract

The influenza virus is a pathogen that can cause pandemic and epidemic outbreaks, and therefore represents a severe threat to human health. Antiviral drugs have an important role in the prevention and treatment of influenza, although the increasing emergence of drug resistance has given rise to a requirement for the development of novel antiviral drugs. In the present study, an active component (C8) isolated from Laggera pterodonta was evaluated. The nuclear magnetic resonance spectroscopy and mass spectrometry analysis results revealed that two eudesmane‑type sesquiterpene compounds were identified in C8; pterodontic acid and pterodondiol. C8 was demonstrated to have a broad‑spectrum effect against different influenza viruses, including human and avian influenza viruses, with a half maximal inhibitory concentration value of 19.9‑91.4 µg/ml. The antiviral mechanisms of C8 were further clarified. Western blot analysis verified that C8 inhibited Toll‑like receptor 7, myeloid differentiation primary response protein 88 and tumor necrosis factor (TNF) receptor associated factor 6 expression, in addition to p65 phosphorylation, at a concentration of 100 or 150 µg/ml. An indirect immunofluorescence assay demonstrated that C8 may inhibit p65/NF‑κB nuclear translocation. Additionally, C8 prevented an increase in cytokine mRNA expression, including interleukin (IL)‑1β, IL‑6, IL‑8 and C‑C motif chemokine 2 (MCP‑1). Furthermore, the Bio‑Plex assay results indicated that the protein expression of IL‑6, IL‑8, TNF‑α, C‑X‑C motif chemokine 10, MCP‑1 and C‑C motif chemokine 5 was inhibited. These findings suggest that C8 has the potential to be developed into an anti‑inflammatory drug for the prevention and treatment of influenza A virus infection.
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Copy and paste a formatted citation
Spandidos Publications style
Wang Y, Li J, Yan W, Chen Q, Jiang Z, Zhang R, Pan X and Wang X: An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway. Mol Med Rep 18: 523-531, 2018.
APA
Wang, Y., Li, J., Yan, W., Chen, Q., Jiang, Z., Zhang, R. ... Wang, X. (2018). An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway. Molecular Medicine Reports, 18, 523-531. https://doi.org/10.3892/mmr.2018.8947
MLA
Wang, Y., Li, J., Yan, W., Chen, Q., Jiang, Z., Zhang, R., Pan, X., Wang, X."An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway". Molecular Medicine Reports 18.1 (2018): 523-531.
Chicago
Wang, Y., Li, J., Yan, W., Chen, Q., Jiang, Z., Zhang, R., Pan, X., Wang, X."An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway". Molecular Medicine Reports 18, no. 1 (2018): 523-531. https://doi.org/10.3892/mmr.2018.8947
Copy and paste a formatted citation
x
Spandidos Publications style
Wang Y, Li J, Yan W, Chen Q, Jiang Z, Zhang R, Pan X and Wang X: An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway. Mol Med Rep 18: 523-531, 2018.
APA
Wang, Y., Li, J., Yan, W., Chen, Q., Jiang, Z., Zhang, R. ... Wang, X. (2018). An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway. Molecular Medicine Reports, 18, 523-531. https://doi.org/10.3892/mmr.2018.8947
MLA
Wang, Y., Li, J., Yan, W., Chen, Q., Jiang, Z., Zhang, R., Pan, X., Wang, X."An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway". Molecular Medicine Reports 18.1 (2018): 523-531.
Chicago
Wang, Y., Li, J., Yan, W., Chen, Q., Jiang, Z., Zhang, R., Pan, X., Wang, X."An active component containing pterodontic acid and pterodondiol isolated from Laggera pterodonta inhibits influenza A virus infection through the TLR7/MyD88/TRAF6/NF‑κB signaling pathway". Molecular Medicine Reports 18, no. 1 (2018): 523-531. https://doi.org/10.3892/mmr.2018.8947
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