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Tachibana A, Hamajima R, Tomizaki M, Kondo T, Nanba Y, Kobayashi M, Yamada H, Ikeda M. HCF-1 encoded by baculovirus AcMNPV is required for productive nucleopolyhedrovirus infection of non-permissive Tn368 cells. Sci Rep 2017. [PMID: 28630398 PMCID: PMC5476645 DOI: 10.1038/s41598-017-03710-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Baculovirus Autographa californica multiple nucleopolyhedrovirus (AcMNPV) replicates in both Spodoptera frugiperda Sf21 and Trichoplusia ni Tn368 cells, whereas AcMNPV defective in hcf-1 (host cell-factor 1) gene productively infects only Sf21 cells, indicating that HCF-1 is indispensable for the AcMNPV productive infection of Tn368 cells. Here, we demonstrated that HCF-1 protein transiently expressed in Tn368 cells promotes the DNA synthesis of Hyphantria cunea MNPV (HycuMNPV), Orygia pseudotsugata MNPV and Bombyx mori NPV, which are normally unable to replicate in Tn368 cells. We also demonstrated that a recombinant HycuMNPV harboring the hcf-1 gene successfully replicates in Tn368 cells, generating substantial yields of progeny viruses and polyhedra. These results indicate that HCF-1 encoded by AcMNPV is an essential viral factor for productive NPV infection of Tn368 cells. Taken together with the previous findings on HRF-1 (host range factor 1), the present results provide strong evidence that viral genes acquired through horizontal gene transfer play an important role in baculovirus evolution, serving to expand the host range of baculoviruses.
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Affiliation(s)
- Ami Tachibana
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Rina Hamajima
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Moe Tomizaki
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Takuya Kondo
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Yoshie Nanba
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Michihiro Kobayashi
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Hayato Yamada
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Motoko Ikeda
- Laboratory of Sericulture and Entomoresources, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan.
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Ikeda M, Yamada H, Hamajima R, Kobayashi M. Baculovirus genes modulating intracellular innate antiviral immunity of lepidopteran insect cells. Virology 2013; 435:1-13. [DOI: 10.1016/j.virol.2012.10.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 10/08/2012] [Accepted: 10/08/2012] [Indexed: 12/11/2022]
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Lee JM, Kawakami N, Mon H, Mitsunobu H, Iiyama K, Ninaki S, Maenaka K, Park EY, Kusakabe T. Establishment of a Bombyx mori nucleopolyhedrovirus (BmNPV) hyper-sensitive cell line from the silkworm e21 strain. Biotechnol Lett 2012; 34:1773-9. [DOI: 10.1007/s10529-012-0971-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 05/22/2012] [Indexed: 10/28/2022]
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Popham HJR, Grasela JJ, Goodman CL, McIntosh AH. Baculovirus infection influences host protein expression in two established insect cell lines. JOURNAL OF INSECT PHYSIOLOGY 2010; 56:1237-1245. [PMID: 20362582 DOI: 10.1016/j.jinsphys.2010.03.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Revised: 03/12/2010] [Accepted: 03/20/2010] [Indexed: 05/29/2023]
Abstract
We identified host proteins that changed in response to host cell susceptibility to baculovirus infection. We used three baculovirus-host cell systems utilizing two cell lines derived from pupal ovaries, Hz-AM1 (from Helicoverpa zea) and Hv-AM1 (from Heliothis virescens). Hv-AM1 cells are permissive to Autographa californica multiple nucleopolyhedrovirus (AcMNPV) and semi-permissive to H. zea single nucleopolyhedrovirus (HzSNPV). Hz-AM1 cells are non-permissive to AcMNPV. We challenged each cell line with baculovirus infection and after 24h determined protein identities by MALDI TOF/TOF mass spectrometry. For Hv-AM1 cells, 21 proteins were identified, and for Hz-AM1 cells, 19 proteins were newly identified (with 8 others having been previously identified). In the permissive relationship, 18 of the proteins changed in expression by 70% or more in AcMNPV infected Hv-AM1 cells as compared with non-infected controls; 12 were significantly decreased and 6 cellular proteins were significantly increased. We also identified 3 virus-specific proteins. In the semi-permissive infections, eight proteins decreased by 2-fold or more. Non-permissive interactions did not lead to substantial changes in host cell protein expression. We hypothesize that some of these proteins act in determining host cell specificity for baculoviruses.
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Affiliation(s)
- Holly J R Popham
- USDA - Agricultural Research Service, Biological Control of Insects Research Laboratory, Columbia, MO 65203, USA.
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Wu CP, Wang JY, Huang TY, Lo HR, Chao YC. Identification of baculoviral factors required for the activation of enhancer-like polyhedrin upstream (pu) sequence. Virus Res 2008; 138:7-16. [PMID: 18760315 DOI: 10.1016/j.virusres.2008.07.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Revised: 07/31/2008] [Accepted: 07/31/2008] [Indexed: 11/30/2022]
Abstract
Previously, we identified a novel enhancer-like element, the polyhedrin upstream (pu) sequence, in the genome of the baculovirus Autographa californica multiple nucleopolyhedrovirus (AcMNPV), which activates several early promoters. The activation requires co-infection of AcMNPV, suggesting that viral gene products are needed for pu-mediated promoter activation. DNA replication assay showed that the pu sequence did not assist in DNA replication and suggested its involvement in activated transcription from target promoters. In order to identify the viral genes responsible for pu-dependent activation of early promoters, a set of overlapping cosmid clones covering the entire 134-kb AcMNPV genome were constructed and screened. Our results identified three viral genes ie1, ie2, and pe38, which function in concert with pu to activate target promoters. In addition, these three viral factors can substitute for the entire virus for the synergistic promoter activation mediated by pu and the known baculovirus enhancer, the homologous region.
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Affiliation(s)
- Carol P Wu
- Department of Chemistry, National Tsing-Hua University, Hsinchu 300, Taiwan, ROC
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