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Llopis-Giménez A, Caballero-Vidal G, Jacquin-Joly E, Crava CM, Herrero S. Baculovirus infection affects caterpillar chemoperception. Insect Biochem Mol Biol 2021; 138:103648. [PMID: 34536505 DOI: 10.1016/j.ibmb.2021.103648] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 09/11/2021] [Accepted: 09/11/2021] [Indexed: 06/13/2023]
Abstract
Baculoviruses are double-stranded DNA entomopathogenic viruses that infect predominantly insects of the order Lepidoptera. Research in the last decade has started to disentangle the mechanisms underlying the insect-virus interaction, particularly focusing on the effects of the baculovirus infection in the host's physiology. Among crucial physiological functions, olfaction has a key role in reproductive tasks, food source detection and enemy avoidance. In this work, we describe that Spodoptera exigua multiple nucleopolyhedrovirus (SeMNPV) induces expression changes in some odorant receptors (ORs) - the centrepiece of insect's olfaction - when infecting larvae from its natural host Spodoptera exigua (Lepidoptera: Noctuidae). Different ORs are up-regulated in larvae after SeMNPV infection, and two of them, SexiOR35 and SexiOR23, were selected for further functional characterization by heterologous expression in empty neurons of Drosophila melanogaster coupled to single-sensillum recordings. SexiOR35 appears to be a broadly tuned receptor able to recognise multiple and different chemical compounds. SexiOR23, although correctly expressed in Drosophila neurons, did not display any significant response to a panel of 58 stimuli. Behavioural experiments revealed that larvae infected by SeMNPV exhibit altered olfactory-driven behaviour to diet when it is supplemented with the plant volatiles linalool or estragole, two of the main SexiOR35 ligands, supporting the hypothesis that viral infection triggers changes in host perception through changes in the expression level of specific ORs.
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Affiliation(s)
- Angel Llopis-Giménez
- Department of Genetics, University Institute of Biotechnology and Biomedicine (BIOTECMED), Universitat de València, 46100, Burjassot (València), Spain
| | - Gabriela Caballero-Vidal
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institute of Ecology and Environmental Sciences of Paris, F78026, Versailles Cedex, France
| | - Emmanuelle Jacquin-Joly
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institute of Ecology and Environmental Sciences of Paris, F78026, Versailles Cedex, France
| | - Cristina Maria Crava
- Department of Genetics, University Institute of Biotechnology and Biomedicine (BIOTECMED), Universitat de València, 46100, Burjassot (València), Spain.
| | - Salvador Herrero
- Department of Genetics, University Institute of Biotechnology and Biomedicine (BIOTECMED), Universitat de València, 46100, Burjassot (València), Spain.
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Silva AM, Morgado FS, Silva LA, Borges JRJ, Perecmanis S, Ardisson-Araújo DMP, Ribeiro BM, Campos FS. Evaluation of the anti-apoptotic activity of bovine alphaherpesvirus type 5 US3 protein kinase in insect cells using a recombinant baculovirus. Braz J Microbiol 2020; 51:827-835. [PMID: 31907798 DOI: 10.1007/s42770-019-00215-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 12/14/2019] [Indexed: 10/25/2022] Open
Abstract
Bovine alphaherpesvirus type 5 (BoHV-5) is one of the main agents responsible for meningoencephalitis in cattle in Brazil, causing significant economic losses. It is known that other viruses of the Herpesviridae family such as Bovine alphaherpesvirus type 1, Swine alphaherpesvirus type 1, and the Human alphaherpesvirus types 1 and 2 encode genes homologous to BoHV-5, with recognized action in the control of apoptosis. The objective of this work was to express the BoHV-5 US3 gene in a baculovirus-based expression system for the production of the serine/threonine kinase protein and to evaluate its activity in the control of apoptosis in vitro. A recombinant baculovirus derived from the Autographa californica multiple nucleopolyhedrovirus (AcMNPV) containing the US3 gene and a deletion in the baculovirus anti-apoptotic p35 gene was constructed using the Bac-to-Bac™ system. This recombinant baculovirus was used to evaluate the anti-apoptotic activity of the recombinant US3 protein in insect cells comparing with two other AcMNPV recombinants, one containing a functional copy of the AcMNPV anti-apoptotic p35 gene and an AcMNPV p35 knockout virus with the anti-apoptotic iap-3 gene from Anticarsia gemmatalis multiple nucleopolyhedrovirus (AgMNPV). We found that the caspase level was higher in insect cells infected with the US3-contanining recombinant virus than in cells infected with the AcMNPV recombinants containing the p35 and iap-3 genes. These results indicate that the BoHV-5 US3 protein kinase gene is not able to block apoptosis in insect cells induced by the infection of a p35 knockout AcMNPV.
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Affiliation(s)
- Alice M Silva
- Laboratory of Veterinary Microbiology, Faculty of Veterinary Medicine and Agronomy, University of Brasília, Brasília, DF, Brazil
| | - Fabrício S Morgado
- Laboratory of Baculovirus, Cell Biology Department, University of Brasília, Brasília, DF, Brazil
| | - Leonardo A Silva
- Laboratory of Baculovirus, Cell Biology Department, University of Brasília, Brasília, DF, Brazil
| | - José R J Borges
- Veterinary Hospital, Faculty of Veterinary Medicine and Agronomy, University of Brasília, Brasília, DF, Brazil
| | - Simone Perecmanis
- Laboratory of Veterinary Microbiology, Faculty of Veterinary Medicine and Agronomy, University of Brasília, Brasília, DF, Brazil
| | - Daniel M P Ardisson-Araújo
- Departament of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Bergmann M Ribeiro
- Laboratory of Baculovirus, Cell Biology Department, University of Brasília, Brasília, DF, Brazil
| | - Fabrício S Campos
- Laboratory of Bioinformatics and Biotechnology, Federal University of Tocantins, Campus of Gurupi, Gurupi, TO, Brazil.
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