Inhibition of enterovirus 71 by adenosine analog NITD008

Cheng Lin Deng, Huimin Yeo, Han Qing Ye, Si Qing Liu, Bao Di Shang, Peng Gong, Sylvie Alonso, Pei-Yong Shi, Bo Zhang

Research output: Contribution to journalArticle

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Abstract

Enterovirus 71 (EV71) is a major viral pathogen in China and Southeast Asia. There is no clinically approved vaccine or antiviral therapy for EV71 infection. NITD008, an adenosine analog, is an inhibitor of flavivirus that blocks viral RNA synthesis. Here we report that NITD008 has potent antiviral activity against EV71. In cell culture, the compound inhibits EV71 at a 50% effective concentration of 0.67 μM and a 50% cytotoxic concentration of 119.97 μM. When administered at 5 mg/kg in an EV71 mouse model, the compound reduced viral loads in various organs and completely prevented clinical symptoms and death. To study the antiviral mechanism and drug resistance, we selected escape mutant viruses by culturing EV71 with increasing concentrations of NITD008. Resistance mutations were reproducibly mapped to the viral 3A and 3D polymerase regions. Resistance analysis with recombinant viruses demonstrated that either a 3A or a 3D mutation alone could lead to resistance to NITD008. A combination of both 3A and 3D mutations conferred higher resistance, suggesting a collaborative interplay between the 3A and 3D proteins during viral replication. The resistance results underline the importance of combination therapy required for EV71 treatment.

Original languageEnglish (US)
Pages (from-to)11915-11923
Number of pages9
JournalJournal of Virology
Volume88
Issue number20
DOIs
StatePublished - 2014
Externally publishedYes

Fingerprint

Enterovirus
adenosine
Adenosine
Mutation
Antiviral Agents
mutation
Viral Drug Resistance
Enterovirus Infections
Viruses
Flavivirus
Southeastern Asia
Viral RNA
Viral Proteins
viruses
therapeutics
Viral Load
drug resistance
virus replication
viral load
NITD008

ASJC Scopus subject areas

  • Immunology
  • Virology
  • Medicine(all)

Cite this

Deng, C. L., Yeo, H., Ye, H. Q., Liu, S. Q., Shang, B. D., Gong, P., ... Zhang, B. (2014). Inhibition of enterovirus 71 by adenosine analog NITD008. Journal of Virology, 88(20), 11915-11923. https://doi.org/10.1128/JVI.01207-14

Inhibition of enterovirus 71 by adenosine analog NITD008. / Deng, Cheng Lin; Yeo, Huimin; Ye, Han Qing; Liu, Si Qing; Shang, Bao Di; Gong, Peng; Alonso, Sylvie; Shi, Pei-Yong; Zhang, Bo.

In: Journal of Virology, Vol. 88, No. 20, 2014, p. 11915-11923.

Research output: Contribution to journalArticle

Deng, CL, Yeo, H, Ye, HQ, Liu, SQ, Shang, BD, Gong, P, Alonso, S, Shi, P-Y & Zhang, B 2014, 'Inhibition of enterovirus 71 by adenosine analog NITD008', Journal of Virology, vol. 88, no. 20, pp. 11915-11923. https://doi.org/10.1128/JVI.01207-14
Deng CL, Yeo H, Ye HQ, Liu SQ, Shang BD, Gong P et al. Inhibition of enterovirus 71 by adenosine analog NITD008. Journal of Virology. 2014;88(20):11915-11923. https://doi.org/10.1128/JVI.01207-14
Deng, Cheng Lin ; Yeo, Huimin ; Ye, Han Qing ; Liu, Si Qing ; Shang, Bao Di ; Gong, Peng ; Alonso, Sylvie ; Shi, Pei-Yong ; Zhang, Bo. / Inhibition of enterovirus 71 by adenosine analog NITD008. In: Journal of Virology. 2014 ; Vol. 88, No. 20. pp. 11915-11923.
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