1887

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Volume 101, Issue 10

Antiviral and virucidal effects of curcumin on transmissible gastroenteritis virus Free

Abstract

Emerging coronaviruses represent serious threats to human and animal health worldwide, and no approved therapeutics are currently available. Here, we used Transmissible gastroenteritis virus (TGEV) as the alpha-coronavirus model, and investigated the antiviral properties of curcumin against TGEV. Our results demonstrated that curcumin strongly inhibited TGEV proliferation and viral protein expression in a dose-dependent manner. We also observed that curcumin exhibited direct virucidal abilities in a dose-, temperature- and time-dependent manner. Furthermore, time-of-addition assays showed that curcumin mainly acted in the early phase of TGEV replication. Notably, in an adsorption assay, curcumin at 40 µM resulted in a reduction in viral titres of 3.55 log TCID ml, indicating that curcumin possesses excellent inhibitory effects on the adsorption of TGEV. Collectively, we demonstrate for the first time that curcumin has virucidal activity and virtual inhibition against TGEV, suggesting that curcumin might be a candidate drug for effective control of TGEV infection.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): curcumin , inhibition assay , transmissible gastroenteritis virus and virucidal assay
Funding
This study was supported by the:
  • Hubei Provincial Department of Education (Award B2016303)
    • Principle Award Recipient: Lilan Xie
  • Natural Science Foundation of Hubei Province (Award 2018CFB662)
    • Principle Award Recipient: Lilan Xie
  • National Natural Science Foundation of China (Award 31402181)
    • Principle Award Recipient: Lilan Xie
  • National Natural Science Foundation of China (Award 31972692)
    • Principle Award Recipient: Lilan Xie
© 2020 The Authors
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/content/journal/jgv/10.1099/jgv.0.001466
2020-07-17
2024-10-03
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Antiviral and virucidal effects of curcumin on transmissible gastroenteritis virus in vitro
J. Gen. Virol. 101, 1079 (2020); https://doi.org/10.1099/jgv.0.001466
/content/journal/jgv/10.1099/jgv.0.001466
/content/journal/jgv/10.1099/jgv.0.001466
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