Antiviral resistance due to deletion in the neuraminidase gene and defective interfering-like viral polymerase basic 2 RNA of influenza A virus subtype H3N2
Copyright © 2018 Elsevier B.V. All rights reserved..
BACKGROUND AND OBJECTIVE: Antiviral treatment of influenza virus infections can lead to drug resistance of virus. This study investigates a selection of mutations in the full genome of H3N2 influenza A virus isolated from a patient in treatment with oseltamivir.
STUDY DESIGN: Respiratory samples from a patient were collected before, during, and after antiviral treatment. Whole genome sequencing of the influenza virus by next generation sequencing, and low-frequency-variant analysis was performed. Neuraminidase-inhibition tests were performed with oseltamivir and zanamivir, and viruses were propagated in sial-transferase gene transfected Madin-Darby Canine Kidney cells.
RESULTS: A deletion at amino acid position 245-248 in the neuraminidase gene occurred after initiation of treatment with oseltamivir. The deleted virus had highly reduced inhibition against oseltamivir but was sensitive to zanamivir. Nine days after discontinuation of oseltamivir treatment the deleted H3N2 virus was still present in the patient. After three passages of the deleted virus in cell culture, the deletion was retained. Several variant mutations appeared in the other genes of the H3N2 virus, where most striking were two major out-of-frame deletions in the polymerase basic 2 (PB2) gene, indicating defective interfering-like viral RNA.
CONCLUSIONS: The viruses harboring the 245-248 deletion in the neuraminidase gene were still present after discontinuation of oseltamivir treatment and passages in cell cultures, indicating a potential risk for transmission of the deleted virus. Full genome deep sequencing was useful to reveal variant mutations that might be selected due to antiviral treatment, and defective interfering-like viral PB2 RNA in the respiratory samples was detected.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:102 |
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| Enthalten in: |
Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology - 102(2018) vom: 15. Mai, Seite 1-6 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Trebbien, Ramona [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 05.07.2019 Date Revised 09.12.2020 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jcv.2018.02.005 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM281066744 |
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| 100 | 1 | |a Trebbien, Ramona |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Antiviral resistance due to deletion in the neuraminidase gene and defective interfering-like viral polymerase basic 2 RNA of influenza A virus subtype H3N2 |
| 264 | 1 | |c 2018 | |
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| 500 | |a Date Completed 05.07.2019 | ||
| 500 | |a Date Revised 09.12.2020 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2018 Elsevier B.V. All rights reserved. | ||
| 520 | |a BACKGROUND AND OBJECTIVE: Antiviral treatment of influenza virus infections can lead to drug resistance of virus. This study investigates a selection of mutations in the full genome of H3N2 influenza A virus isolated from a patient in treatment with oseltamivir | ||
| 520 | |a STUDY DESIGN: Respiratory samples from a patient were collected before, during, and after antiviral treatment. Whole genome sequencing of the influenza virus by next generation sequencing, and low-frequency-variant analysis was performed. Neuraminidase-inhibition tests were performed with oseltamivir and zanamivir, and viruses were propagated in sial-transferase gene transfected Madin-Darby Canine Kidney cells | ||
| 520 | |a RESULTS: A deletion at amino acid position 245-248 in the neuraminidase gene occurred after initiation of treatment with oseltamivir. The deleted virus had highly reduced inhibition against oseltamivir but was sensitive to zanamivir. Nine days after discontinuation of oseltamivir treatment the deleted H3N2 virus was still present in the patient. After three passages of the deleted virus in cell culture, the deletion was retained. Several variant mutations appeared in the other genes of the H3N2 virus, where most striking were two major out-of-frame deletions in the polymerase basic 2 (PB2) gene, indicating defective interfering-like viral RNA | ||
| 520 | |a CONCLUSIONS: The viruses harboring the 245-248 deletion in the neuraminidase gene were still present after discontinuation of oseltamivir treatment and passages in cell cultures, indicating a potential risk for transmission of the deleted virus. Full genome deep sequencing was useful to reveal variant mutations that might be selected due to antiviral treatment, and defective interfering-like viral PB2 RNA in the respiratory samples was detected | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Antiviral | |
| 650 | 4 | |a Defective interfering viral RNA | |
| 650 | 4 | |a Deletion | |
| 650 | 4 | |a H3N2 | |
| 650 | 4 | |a Influenza | |
| 650 | 4 | |a Resistance | |
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| 700 | 1 | |a Fischer, Thea Kølsen |e verfasserin |4 aut | |
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