Strain-specific antiviral activity of iminosugars against human influenza A viruses.
<h4>Objectives:</h4> <p>Drugs that target host cell processes can be employed to complement drugs that specifically target viruses, and iminosugar compounds that inhibit hosta-glucosidases have been reported to show antiviral activity against multiple viruses. Here the effect and m...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Oxford University Press
2015
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| _version_ | 1797059059153633280 |
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| author | Hussain, S Miller, J Harvey, D Gu, Y Rosenthal, P Zitzmann, N McCauley, J |
| author_facet | Hussain, S Miller, J Harvey, D Gu, Y Rosenthal, P Zitzmann, N McCauley, J |
| author_sort | Hussain, S |
| collection | OXFORD |
| description | <h4>Objectives:</h4> <p>Drugs that target host cell processes can be employed to complement drugs that specifically target viruses, and iminosugar compounds that inhibit hosta-glucosidases have been reported to show antiviral activity against multiple viruses. Here the effect and mechanism of two iminosugara-glucosidase inhibitors, N-butyl-deoxynojirimycin (NB-DNJ) andN-nonyl-deoxynojirimycin (NN-DNJ), on human influenza A viruses was examined.</p> <h4>Methods:</h4> <p>The viruses examined were a recently circulating seasonal influenza A(H3N2) virus strain A/Brisbane/10/2007, an older H3N2 strain A/Udorn/307/72, and A/Lviv/N6/2009, a strain representative of the currently circulating pandemic influenza A(H1N1)pdm09 virus.</p> <h4>Results:</h4> <p>The inhibitors had the strongest effect on Brisbane/10 andNN-DNJ was more potent thanNB-DNJ. Both compounds showed antiviral activity in cell culture against three human influenza A viruses in a strain-specific manner. Consistent with its action as ana-glucosidase inhibitor,NN-DNJ treatment resulted in an altered glycan processing of influenza haemagglutinin (HA) and neuraminidase (NA), confirmed by MS.NN-DNJ treatment was found to reduce the cell surface expression of the H3 subtype HA. The level of sialidase activity of NA was reduced in infected cells, but the addition of exogenous sialidase to the cells did not complement the NN-DNJ-mediated inhibition of virus replication. Using reassortant viruses, the drug susceptibility profile was determined to correlate with the origin of the HA.</p> <h4>Conclusions:</h4> <p>NN-DNJ inhibits influenza A virus replication in a strain-specific manner that is dependent on the HA</p> |
| first_indexed | 2024-03-06T19:58:53Z |
| format | Journal article |
| id | oxford-uuid:2696f58c-8371-45e4-85a0-b9a42d4423ab |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:58:53Z |
| publishDate | 2015 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:2696f58c-8371-45e4-85a0-b9a42d4423ab2022-03-26T12:01:52ZStrain-specific antiviral activity of iminosugars against human influenza A viruses.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2696f58c-8371-45e4-85a0-b9a42d4423abEnglishSymplectic Elements at OxfordOxford University Press2015Hussain, SMiller, JHarvey, DGu, YRosenthal, PZitzmann, NMcCauley, J<h4>Objectives:</h4> <p>Drugs that target host cell processes can be employed to complement drugs that specifically target viruses, and iminosugar compounds that inhibit hosta-glucosidases have been reported to show antiviral activity against multiple viruses. Here the effect and mechanism of two iminosugara-glucosidase inhibitors, N-butyl-deoxynojirimycin (NB-DNJ) andN-nonyl-deoxynojirimycin (NN-DNJ), on human influenza A viruses was examined.</p> <h4>Methods:</h4> <p>The viruses examined were a recently circulating seasonal influenza A(H3N2) virus strain A/Brisbane/10/2007, an older H3N2 strain A/Udorn/307/72, and A/Lviv/N6/2009, a strain representative of the currently circulating pandemic influenza A(H1N1)pdm09 virus.</p> <h4>Results:</h4> <p>The inhibitors had the strongest effect on Brisbane/10 andNN-DNJ was more potent thanNB-DNJ. Both compounds showed antiviral activity in cell culture against three human influenza A viruses in a strain-specific manner. Consistent with its action as ana-glucosidase inhibitor,NN-DNJ treatment resulted in an altered glycan processing of influenza haemagglutinin (HA) and neuraminidase (NA), confirmed by MS.NN-DNJ treatment was found to reduce the cell surface expression of the H3 subtype HA. The level of sialidase activity of NA was reduced in infected cells, but the addition of exogenous sialidase to the cells did not complement the NN-DNJ-mediated inhibition of virus replication. Using reassortant viruses, the drug susceptibility profile was determined to correlate with the origin of the HA.</p> <h4>Conclusions:</h4> <p>NN-DNJ inhibits influenza A virus replication in a strain-specific manner that is dependent on the HA</p> |
| spellingShingle | Hussain, S Miller, J Harvey, D Gu, Y Rosenthal, P Zitzmann, N McCauley, J Strain-specific antiviral activity of iminosugars against human influenza A viruses. |
| title | Strain-specific antiviral activity of iminosugars against human influenza A viruses. |
| title_full | Strain-specific antiviral activity of iminosugars against human influenza A viruses. |
| title_fullStr | Strain-specific antiviral activity of iminosugars against human influenza A viruses. |
| title_full_unstemmed | Strain-specific antiviral activity of iminosugars against human influenza A viruses. |
| title_short | Strain-specific antiviral activity of iminosugars against human influenza A viruses. |
| title_sort | strain specific antiviral activity of iminosugars against human influenza a viruses |
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