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Amalfi S, Plastine MDP, López MG, Gravisaco MJ, Taboga O, Alfonso V. P26 enhances baculovirus gene delivery by modulating the mammalian antiviral response. Appl Microbiol Biotechnol 2023; 107:6277-6286. [PMID: 37578557 DOI: 10.1007/s00253-023-12703-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 07/14/2023] [Accepted: 07/22/2023] [Indexed: 08/15/2023]
Abstract
Poxins are poxviral proteins that act by degrading 2´3´-cGAMP, a key molecule of cGAS-STING axis that drives and amplifies the antiviral response. Previous works have described some poxin homologous among lepidopteran and baculoviral genes. In particular, P26, a poxin homologous from AcMNPV retains the 2´3´-cGAMP degradation activity in vitro. In this work, we demonstrated that the antiviral activity triggered by baculovirus was disrupted by the transient expression of P26 in murine and human cell lines, and the effect of this action is not only on IFN-β production but also on the induction of IFN-λ. Besides, we proved P26 functionality in a stable-transformed cell line where the protein was constitutively expressed, preventing the production of IFN-β induced by baculovirus and resulting in an improvement in the transduction efficiency by the attenuation of the antiviral activity. Finally, we incorporated P26 into budded virions by capsid display or passive incorporation, and the results showed that both strategies resulted in an improvement of 3-17 times in the efficiency of transgene expression in murine fibroblasts. Our results suggest that the incorporation of P26 to budded baculoviral vectors is a very promising tool to modulate negatively the innate antiviral cellular response and to improve the efficiency of gene delivery in mammalian cells. KEY POINTS: • P26 affects baculovirus-induced IFN-β and IFN-λ production in mammalian cells. • Murine fibroblasts expressing P26 are more susceptible to transduction by baculovirus. • Incorporation of P26 into the virion improves gene delivery efficiency of baculovirus.
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Affiliation(s)
- Sabrina Amalfi
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), De los Reseros y N. Repetto s/n, B1686IGC, Hurlingham, Buenos Aires, Argentina
- Instituto de Biotecnología, Universidad Nacional de Hurlingham, Av. Vergara 2222, Villa Tesei, B1688GEZ, Hurlingham, Buenos Aires, Argentina
| | - María Del Pilar Plastine
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), De los Reseros y N. Repetto s/n, B1686IGC, Hurlingham, Buenos Aires, Argentina
| | - María Gabriela López
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), De los Reseros y N. Repetto s/n, B1686IGC, Hurlingham, Buenos Aires, Argentina
| | - María José Gravisaco
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), De los Reseros y N. Repetto s/n, B1686IGC, Hurlingham, Buenos Aires, Argentina
| | - Oscar Taboga
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), De los Reseros y N. Repetto s/n, B1686IGC, Hurlingham, Buenos Aires, Argentina.
| | - Victoria Alfonso
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), De los Reseros y N. Repetto s/n, B1686IGC, Hurlingham, Buenos Aires, Argentina
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Amalfi S, Molina GN, Bevacqua RJ, López MG, Taboga O, Alfonso V. Baculovirus Transduction in Mammalian Cells Is Affected by the Production of Type I and III Interferons, Which Is Mediated Mainly by the cGAS-STING Pathway. J Virol 2020; 94:e01555-20. [PMID: 32796076 PMCID: PMC7565641 DOI: 10.1128/jvi.01555-20] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 08/05/2020] [Indexed: 12/13/2022] Open
Abstract
The baculovirus Autographa californica multiple nucleopolyhedrovirus is an insect virus with a circular double-stranded DNA genome, which, among other multiple biotechnological applications, is used as an expression vector for gene delivery in mammalian cells. Nevertheless, the nonspecific immune response triggered by viral vectors often suppresses transgene expression. To understand the mechanisms involved in that response, in the present study, we studied the cyclic GMP-AMP synthase-stimulator of interferon genes (cGAS-STING) pathway by using two approaches: the genetic edition through CRISPR/Cas9 technology of genes encoding STING or cGAS in NIH/3T3 murine fibroblasts and the infection of HEK293 and HEK293 T human epithelial cells, deficient in cGAS and in cGAS and STING expression, respectively. Overall, our results suggest the existence of two different pathways involved in the establishment of the antiviral response, both dependent on STING expression. Particularly, the cGAS-STING pathway resulted in the more relevant production of beta interferon (IFN-β) and IFN-λ1 in response to baculovirus infection. In human epithelial cells, IFN-λ1 production was also induced in a cGAS-independent and DNA-protein kinase (DNA-PK)-dependent manner. Finally, we demonstrated that these cellular responses toward baculovirus infection affect the efficiency of transduction of baculovirus vectors.IMPORTANCE Baculoviruses are nonpathogenic viruses that infect mammals, which, among other applications, are used as vehicles for gene delivery. Here, we demonstrated that the cytosolic DNA sensor cGAS recognizes baculoviral DNA and that the cGAS-STING axis is primarily responsible for the attenuation of transduction in human and mouse cell lines through type I and type III IFNs. Furthermore, we identified DNA-dependent protein kinase (DNA-PK) as a cGAS-independent and alternative DNA cytosolic sensor that contributes less to the antiviral state in baculovirus infection in human epithelial cells than cGAS. Knowledge of the pathways involved in the response of mammalian cells to baculovirus infection will improve the use of this vector as a tool for gene therapy.
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Affiliation(s)
- Sabrina Amalfi
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
| | - Guido Nicolás Molina
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
| | - Romina Jimena Bevacqua
- Laboratorio de Biotecnología Animal, Facultad de Agronomía, Universidad de Buenos Aires/INPA-CONICET, Buenos Aires, Argentina
- Seung Kim Lab, Department of Developmental Biology, Stanford University School of Medicine, Stanford, California, USA
| | - María Gabriela López
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
| | - Oscar Taboga
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
| | - Victoria Alfonso
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
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Wang CH, Naik NG, Liao LL, Wei SC, Chao YC. Global Screening of Antiviral Genes that Suppress Baculovirus Transgene Expression in Mammalian Cells. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2017; 6:194-206. [PMID: 28831401 PMCID: PMC5554962 DOI: 10.1016/j.omtm.2017.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 07/13/2017] [Indexed: 12/31/2022]
Abstract
Although baculovirus has been used as a safe and convenient gene delivery vector in mammalian cells, baculovirus-mediated transgene expression is less effective in various mammalian cell lines. Identification of the negative regulators in host cells is necessary to improve baculovirus-based expression systems. Here, we performed high-throughput shRNA library screening, targeting 176 antiviral innate immune genes, and identified 43 host restriction factor genes in a human A549 lung carcinoma cell line. Among them, suppression of receptor interaction protein kinase 1 (RIP1, also known as RIPK1) significantly increased baculoviral transgene expression without resulting in significant cell death. Silencing of RIP1 did not affect viral entry or cell viability, but it did inhibit nuclear translocation of the IRF3 and NF-κB transcription factors. Also, activation of downstream signaling mediators (such as TBK1 and IRF7) was affected, and subsequent interferon and cytokine gene expression levels were abolished. Further, Necrostatin-1 (Nec-1)—an inhibitor of RIP1 kinase activity—dramatically increased baculoviral transgene expression in RIP1-silenced cells. Using baculovirus as a model system, this study presents an initial investigation of large numbers of human cell antiviral innate immune response factors against a “nonadaptive virus.” In addition, our study has made baculovirus a more efficient gene transfer vector for some of the most frequently used mammalian cell systems.
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Affiliation(s)
- Chia-Hung Wang
- Department of Life Science and Institute of Genome Science, National Yang Ming University, No. 115, Section 2, Linong St., Beitou District, Taipei 112, Taiwan.,Institute of Molecular Biology, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan
| | - Nenavath Gopal Naik
- Institute of Molecular Biology, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan
| | - Lin-Li Liao
- Institute of Molecular Biology, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan
| | - Sung-Chan Wei
- Institute of Molecular Biology, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan
| | - Yu-Chan Chao
- Institute of Molecular Biology, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan
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Lin SY, Chung YC, Hu YC. Update on baculovirus as an expression and/or delivery vehicle for vaccine antigens. Expert Rev Vaccines 2014; 13:1501-21. [DOI: 10.1586/14760584.2014.951637] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Adaptive immune responses elicited by baculovirus and impacts on subsequent transgene expression in vivo. J Virol 2013; 87:4965-73. [PMID: 23408634 DOI: 10.1128/jvi.03510-12] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Baculovirus (BV) is a promising gene therapy vector and typically requires readministration because BV mediates transient expression. However, how the prime-boost regimen triggers BV-specific adaptive responses and their impacts on BV readministration, transgene expression, and therapeutic/vaccine efficacy remain unknown. Here we unraveled that BV injection into BALB/c mice induced the production of BV-specific antibodies, including IgG1 and IgG2a, which could neutralize BV by antagonizing the envelope protein gp64 and impede BV-mediated transgene expression. Moreover, humans did not possess preexisting anti-BV antibodies. BV injection also elicited BV-specific Th1 and Th2 responses as well as CD4(+) and CD8(+) T cell responses. gp64 was a primary immunogen to activate the antibody and CD8(+) T cell response, with its peptide at positions 457 to 465 (peptide 457-465) being the major histocompatibility complex (MHC) class I epitope to stimulate CD8(+) T cell and cytotoxic responses. Nonetheless, a hybrid Sleeping Beauty-based BV enabled long-term expression for >1 year by a single injection, indicating that the T cell responses did not completely eradicate BV-transduced cells and implicating the potential of this hybrid BV vector for gene therapy. These data unveil that BV injection triggers adaptive immunity and benefit rational design of BV administration schemes for gene therapy and vaccination.
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The role of adipose-derived stem cells engineered with the persistently expressing hybrid baculovirus in the healing of massive bone defects. Biomaterials 2011; 32:6505-14. [DOI: 10.1016/j.biomaterials.2011.05.059] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 05/19/2011] [Indexed: 01/01/2023]
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Chen CL, Luo WY, Lo WH, Lin KJ, Sung LY, Shih YS, Chang YH, Hu YC. Development of hybrid baculovirus vectors for artificial MicroRNA delivery and prolonged gene suppression. Biotechnol Bioeng 2011; 108:2958-67. [DOI: 10.1002/bit.23250] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Revised: 05/27/2011] [Accepted: 06/23/2011] [Indexed: 01/10/2023]
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Chen CY, Lin CY, Chen GY, Hu YC. Baculovirus as a gene delivery vector: recent understandings of molecular alterations in transduced cells and latest applications. Biotechnol Adv 2011; 29:618-31. [PMID: 21550393 PMCID: PMC7126054 DOI: 10.1016/j.biotechadv.2011.04.004] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 04/15/2011] [Accepted: 04/15/2011] [Indexed: 12/13/2022]
Abstract
Baculovirus infects insects in nature and is non-pathogenic to humans, but can transduce a broad range of mammalian and avian cells. Thanks to the biosafety, large cloning capacity, low cytotoxicity and non-replication nature in the transduced cells as well as the ease of manipulation and production, baculovirus has gained explosive popularity as a gene delivery vector for a wide variety of applications. This article extensively reviews the recent understandings of the molecular mechanisms pertinent to baculovirus entry and cellular responses, and covers the latest advances in the vector improvements and applications, with special emphasis on antiviral therapy, cancer therapy, regenerative medicine and vaccine.
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Affiliation(s)
- Chi-Yuan Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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Chen CY, Wu HH, Chen CP, Chern SR, Hwang SM, Huang SF, Lo WH, Chen GY, Hu YC. Biosafety Assessment of Human Mesenchymal Stem Cells Engineered by Hybrid Baculovirus Vectors. Mol Pharm 2011; 8:1505-14. [DOI: 10.1021/mp100368d] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Chi-Yuan Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 300
| | - Hsiao-Hsuan Wu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 300
| | - Chih-Ping Chen
- Division of Genetics, Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan 104
| | - Schu-Rern Chern
- Division of Genetics, Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan 104
| | - Shiaw-Min Hwang
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan 300
| | - Shiu-Feng Huang
- Division of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli, Taiwan 350
| | - Wen-Hsin Lo
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 300
| | - Guan-Yu Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 300
| | - Yu-Chen Hu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 300
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Wang X, Yin J, Huang X, Zhong J. DNA methyltransferase inhibitors increase baculovirus-mediated gene expression in mammalian cells when applied before infection. Anal Biochem 2009; 396:322-4. [PMID: 19772850 DOI: 10.1016/j.ab.2009.09.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2009] [Revised: 09/16/2009] [Accepted: 09/17/2009] [Indexed: 11/28/2022]
Abstract
The application of baculovirus as a gene delivery vector for mammalian cells is limited by gene silencing in host cells. Although histone deacetylation inhibitors were known to improve baculovirus-mediated gene expression in mammalian cells, another group of chemicals that induces epigenetic changes, DNA methyltransferase inhibitors (DNMTis), were reported to have no such effect. In the current work, we found that, when added prior to virus inoculation, DNMTis improved baculovirus-mediated gene expression by fourfold or more in all four mammalian cell lines tested. The presence of inhibitors during the period of virus inoculation was important for them to be effective.
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Affiliation(s)
- Xin Wang
- Department of Microbiology and Microbial Engineering, School of Life Sciences, Fudan University, Shanghai 200433, People's Republic of China
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