Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent

Influenza virus is estimated to cause 3-5 million severe complications and about 250-500 thousand deaths per year. Different kinds of anti-influenza virus drugs have been developed. However, the emergence of drug resistant strains has presented a big challenge for efficient antiviral therapy. Indole...

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Main Authors: Tan, M.C., Wong, W.Y., Ng, W.L., Yeo, K.S., Mohidin, T.B.M., Lim, Y.Y., Lafta, F., Mohd Ali, H., Ea, C.K.
Format: Article
Published: Public Library of Science 2017
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Online Access:http://eprints.um.edu.my/19008/
http://dx.doi.org/10.1371/journal.pone.0170352
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spelling my.um.eprints.190082018-08-10T08:28:37Z http://eprints.um.edu.my/19008/ Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent Tan, M.C. Wong, W.Y. Ng, W.L. Yeo, K.S. Mohidin, T.B.M. Lim, Y.Y. Lafta, F. Mohd Ali, H. Ea, C.K. Q Science (General) QD Chemistry QH Natural history Influenza virus is estimated to cause 3-5 million severe complications and about 250-500 thousand deaths per year. Different kinds of anti-influenza virus drugs have been developed. However, the emergence of drug resistant strains has presented a big challenge for efficient antiviral therapy. Indole derivatives have been shown to exhibit both antiviral and anti-inflammatory activities. In this study, we adopted a cell-based system to screen for potential anti-IAV agents. Four indole derivatives (named 525A, 526A, 527A and 528A) were subjected to the antiviral screening, of which 526A was selected for further investigation. We reported that pre-treating cells with 526A protects cells from IAV infection. Furthermore, 526A inhibits IAV replication by inhibiting the expression of IAV genes. Interestingly, 526A suppresses the activation of IRF3 and STAT1 in host cells and thus represses the production of type I interferon response and cytokines in IAV-infected cells. Importantly, 526A also partially blocks the activation of RIG-I pathway. Taken together, these results suggest that 526A may be a potential anti-influenza A virus agent. Public Library of Science 2017 Article PeerReviewed Tan, M.C. and Wong, W.Y. and Ng, W.L. and Yeo, K.S. and Mohidin, T.B.M. and Lim, Y.Y. and Lafta, F. and Mohd Ali, H. and Ea, C.K. (2017) Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent. PLoS ONE, 12 (1). e0170352. ISSN 1932-6203 http://dx.doi.org/10.1371/journal.pone.0170352 doi:10.1371/journal.pone.0170352
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QD Chemistry
QH Natural history
spellingShingle Q Science (General)
QD Chemistry
QH Natural history
Tan, M.C.
Wong, W.Y.
Ng, W.L.
Yeo, K.S.
Mohidin, T.B.M.
Lim, Y.Y.
Lafta, F.
Mohd Ali, H.
Ea, C.K.
Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent
description Influenza virus is estimated to cause 3-5 million severe complications and about 250-500 thousand deaths per year. Different kinds of anti-influenza virus drugs have been developed. However, the emergence of drug resistant strains has presented a big challenge for efficient antiviral therapy. Indole derivatives have been shown to exhibit both antiviral and anti-inflammatory activities. In this study, we adopted a cell-based system to screen for potential anti-IAV agents. Four indole derivatives (named 525A, 526A, 527A and 528A) were subjected to the antiviral screening, of which 526A was selected for further investigation. We reported that pre-treating cells with 526A protects cells from IAV infection. Furthermore, 526A inhibits IAV replication by inhibiting the expression of IAV genes. Interestingly, 526A suppresses the activation of IRF3 and STAT1 in host cells and thus represses the production of type I interferon response and cytokines in IAV-infected cells. Importantly, 526A also partially blocks the activation of RIG-I pathway. Taken together, these results suggest that 526A may be a potential anti-influenza A virus agent.
format Article
author Tan, M.C.
Wong, W.Y.
Ng, W.L.
Yeo, K.S.
Mohidin, T.B.M.
Lim, Y.Y.
Lafta, F.
Mohd Ali, H.
Ea, C.K.
author_facet Tan, M.C.
Wong, W.Y.
Ng, W.L.
Yeo, K.S.
Mohidin, T.B.M.
Lim, Y.Y.
Lafta, F.
Mohd Ali, H.
Ea, C.K.
author_sort Tan, M.C.
title Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent
title_short Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent
title_full Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent
title_fullStr Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent
title_full_unstemmed Identification of 5-Methoxy-2-(Diformylmethylidene)-3,3-Dimethylindole as an Anti-Influenza A Virus Agent
title_sort identification of 5-methoxy-2-(diformylmethylidene)-3,3-dimethylindole as an anti-influenza a virus agent
publisher Public Library of Science
publishDate 2017
url http://eprints.um.edu.my/19008/
http://dx.doi.org/10.1371/journal.pone.0170352
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score 13.211869