Infection of a Lepidopteran Cell Line with Deformed Wing Virus

Many attempts to develop a reliable cell cultured-based system to study honey bee virus infections have encountered substantial difficulties. We investigated the ability of a cell line from a heterologous insect to sustain infection by a honey bee virus. For this purpose, we infected the Lepidoptera...

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Main Authors: Tal Erez, Nor Chejanovsky
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/12/7/739
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author Tal Erez
Nor Chejanovsky
author_facet Tal Erez
Nor Chejanovsky
author_sort Tal Erez
collection DOAJ
description Many attempts to develop a reliable cell cultured-based system to study honey bee virus infections have encountered substantial difficulties. We investigated the ability of a cell line from a heterologous insect to sustain infection by a honey bee virus. For this purpose, we infected the Lepidopteran hemocytic cell line (P1) with Deformed wing virus (DWV). The genomic copies of DWV increased upon infection, as monitored by quantitative RT-PCR. Moreover, a tagged-primer-based RT-PCR analysis showed the presence of DWV negative-sense RNA in the cells, indicating virus replication. However, the DWV from infected cells was mildly infectious to P1 cells. Similar results were obtained when the virus was injected into <i>Apis mellifera</i> pupae. Thus, though the virus yields from the infected cells appeared to be very low, we show for the first time that DWV can replicate in a heterologous cell line. Given the availability of many other insect cell lines, our study paves the way for future exploration in this direction. In the absence of adequate <i>A. mellifera</i> cell lines, exploring the ability of alternative cell lines to enable honey bee virus infections could provide the means to study and understand the viral infectious cycle at the cellular level and facilitate obtaining purified isolates of these viruses.
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spelling doaj.art-77441072c48c4b19bd0b9547435095a12023-11-20T06:15:22ZengMDPI AGViruses1999-49152020-07-0112773910.3390/v12070739Infection of a Lepidopteran Cell Line with Deformed Wing VirusTal Erez0Nor Chejanovsky1Department of Entomology Institute of Plant Protection, Agricultural Research Organization, Rishon Lezion 7528809, IsraelDepartment of Entomology Institute of Plant Protection, Agricultural Research Organization, Rishon Lezion 7528809, IsraelMany attempts to develop a reliable cell cultured-based system to study honey bee virus infections have encountered substantial difficulties. We investigated the ability of a cell line from a heterologous insect to sustain infection by a honey bee virus. For this purpose, we infected the Lepidopteran hemocytic cell line (P1) with Deformed wing virus (DWV). The genomic copies of DWV increased upon infection, as monitored by quantitative RT-PCR. Moreover, a tagged-primer-based RT-PCR analysis showed the presence of DWV negative-sense RNA in the cells, indicating virus replication. However, the DWV from infected cells was mildly infectious to P1 cells. Similar results were obtained when the virus was injected into <i>Apis mellifera</i> pupae. Thus, though the virus yields from the infected cells appeared to be very low, we show for the first time that DWV can replicate in a heterologous cell line. Given the availability of many other insect cell lines, our study paves the way for future exploration in this direction. In the absence of adequate <i>A. mellifera</i> cell lines, exploring the ability of alternative cell lines to enable honey bee virus infections could provide the means to study and understand the viral infectious cycle at the cellular level and facilitate obtaining purified isolates of these viruses.https://www.mdpi.com/1999-4915/12/7/739Deformed wing virushoney bee virusLepidopteran cells
spellingShingle Tal Erez
Nor Chejanovsky
Infection of a Lepidopteran Cell Line with Deformed Wing Virus
Viruses
Deformed wing virus
honey bee virus
Lepidopteran cells
title Infection of a Lepidopteran Cell Line with Deformed Wing Virus
title_full Infection of a Lepidopteran Cell Line with Deformed Wing Virus
title_fullStr Infection of a Lepidopteran Cell Line with Deformed Wing Virus
title_full_unstemmed Infection of a Lepidopteran Cell Line with Deformed Wing Virus
title_short Infection of a Lepidopteran Cell Line with Deformed Wing Virus
title_sort infection of a lepidopteran cell line with deformed wing virus
topic Deformed wing virus
honey bee virus
Lepidopteran cells
url https://www.mdpi.com/1999-4915/12/7/739
work_keys_str_mv AT talerez infectionofalepidopterancelllinewithdeformedwingvirus
AT norchejanovsky infectionofalepidopterancelllinewithdeformedwingvirus