1
|
Guardalini LGO, Leme J, da Silva Cavalcante PE, de Mello RG, Bernardino TC, Jared SGS, Antoniazzi MM, Astray RM, Tonso A, Núñez EGF, Jorge SAC. Sf9 Cell Metabolism Throughout the Recombinant Baculovirus and Rabies Virus-Like Particles Production in Two Culture Systems. Mol Biotechnol 2024; 66:354-364. [PMID: 37162721 DOI: 10.1007/s12033-023-00759-2] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 04/22/2023] [Indexed: 05/11/2023]
Abstract
This work aimed to assess the Sf9 cell metabolism during growth, and infection steps with recombinant baculovirus bearing rabies virus proteins, to finally obtain rabies VLP in two culture systems: Schott flask (SF) and stirred tank reactor (STR). Eight assays were performed in SF and STR (four assays in each system) using serum-free SF900 III culture medium. Two non-infection growth kinetics assays and six recombinant baculovirus infection assays. The infection runs were carried out at 0.1 pfu/cell multiplicity of infection (MOI) for single baculovirus bearing rabies glycoprotein (BVG) and matrix protein (BVM) and a coinfection with both baculoviruses at MOI of 3 and 2 pfu/cell for BVG and BVM, respectively. The SF assays were done in triplicate. The glucose, glutamine, glutamate, lactate, and ammonium uptake or release specific rates were quantified over the exponential growth phase and infection stage. The highest uptake specific rate was observed for glucose (42.5 × 10-12 mmol cell/h) in SF and for glutamine (30.8 × 10-12 mmol/cell/h) in STR, in the exponential growth phases. A wave pattern was observed for assessed analytes throughout the infection phase and the glucose had the highest wave amplitude within the 10-10 mmol cell/h order. This alternative uptake and release behavior is in harmony with the lytic cycle of baculovirus in insect cells. The virus propagation and VLP generation were not limited by glucose, glutamine, and glutamate, neither by the toxicity of lactate nor ammonium under the conditions appraised in this work. The findings from this work can be useful to set baculovirus infection processes at high cell density to improve rabies VLP yield, purity, and productivity.
Collapse
Affiliation(s)
| | - Jaci Leme
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | | | - Renata Gois de Mello
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Thaissa Consoni Bernardino
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Simone Gonçalves Silva Jared
- Laboratório de Biologia Estrutural, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Marta Maria Antoniazzi
- Laboratório de Biologia Estrutural, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Renato Mancini Astray
- Laboratório Multipropósito, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Aldo Tonso
- Laboratório de Células Animais, Departamento de Engenharia Química, Escola Politécnica, Universidade de São Paulo, Av. Prof. Luciano Gualberto, Trav. 3, 380, São Paulo, SP, 05508-900, Brazil
| | - Eutimio Gustavo Fernández Núñez
- Grupo de Engenharia de Bioprocessos. Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo, Rua Arlindo Béttio, 1000, São Paulo, SP, CEP 03828-000, Brazil
| | - Soraia Attie Calil Jorge
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil.
| |
Collapse
|
2
|
de Mello RG, Bernardino TC, Guardalini LGO, Astray RM, Antoniazzi MM, Jared SGS, Núñez EGF, Jorge SAC. Zika virus-like particles (VLPs) produced in insect cells. Front Pharmacol 2023; 14:1181566. [PMID: 37377933 PMCID: PMC10291072 DOI: 10.3389/fphar.2023.1181566] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Introdutcion: The Zika virus (ZIKV) infections are a healthcare concern mostly in the Americas, Africa, and Asia but have increased its endemicity area beyond these geographical regions. Due to the advances in infections by Zika virus, it is imperative to develop diagnostic and preventive tools against this viral agent. Virus-like particles (VLPs) appear as a suitable approach for use as antiviral vaccines. Methods: In this work, a methodology was established to produce virus-like particles containing the structural proteins, C, prM, and E of Zika virus produced in insect cells using the gene expression system derived from baculovirus. The vector pFast- CprME -ZIKV was constructed containing the gene sequences of Zika virus structural proteins and it was used to generate the recombinant bacmids (Bac- CprME -ZIKV) through transformation into DH10BacTM cells. The Bac- CprME -ZIKV was transfected in Spodoptera frugiperda (Sf9) insect cells and batches of BV- CprME -ZIKV were obtained by infection assays using a multiplicity of infection of 2. The Sf9 cells were infected, and the supernatant was collected 96 h post-infection. The expression of the CprME -ZIKV protein on the cell surface could be observed by immunochemical assays. To concentrate and purify virus-like particles, the sucrose and iodixanol gradients were evaluated, and the correct CprME -ZIKV proteins' conformation was evaluated by the Western blot assay. The virus-like particles were also analyzed and characterized by transmission electron microscopy. Results and discussion: Spherical structures like the native Zika virus from 50 to 65 nm containing the CprME -ZIKV proteins on their surface were observed in micrographs. The results obtained can be useful in the development path for a vaccine candidate against Zika virus.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Eutimio Gustavo Fernández Núñez
- Grupo de Engenharia de Bioprocessos, Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo, São Paulo, SP, Brazil
| | | |
Collapse
|
3
|
Leme J, Guardalini LGO, Bernardino TC, Astray RM, Tonso A, Núñez EGF, Jorge SAC. Sf9 Cells Metabolism and Viability When Coinfected with Two Monocistronic Baculoviruses to Produce Rabies Virus-like Particles. Mol Biotechnol 2022; 65:970-982. [PMCID: PMC9672645 DOI: 10.1007/s12033-022-00586-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/14/2022] [Indexed: 11/19/2022]
|
4
|
Guardalini LGO, da Silva Cavalcante PE, Leme J, de Mello RG, Bernardino TC, Astray RM, Tonso A, Jorge SAC, Núñez NGF. Oxygen uptake and transfer rates throughout production of recombinant baculovirus and rabies virus-like particles. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
|
5
|
Maleski ALA, Rosa JGS, Bernardo JTG, Astray RM, Walker CIB, Lopes-Ferreira M, Lima C. Recapitulation of Retinal Damage in Zebrafish Larvae Infected with Zika Virus. Cells 2022; 11:cells11091457. [PMID: 35563763 PMCID: PMC9100881 DOI: 10.3390/cells11091457] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/24/2022] [Accepted: 04/07/2022] [Indexed: 02/06/2023] Open
Abstract
Zebrafish are increasingly being utilized as a model to investigate infectious diseases and to advance the understanding of pathogen–host interactions. Here, we take advantage of the zebrafish to recapitulate congenital ZIKV infection and, for the first time, demonstrate that it can be used to model infection and reinfection and monitor anti-viral and inflammatory immune responses, as well as brain growth and eye abnormalities during embryonic development. By injecting a Brazilian strain of ZIKV into the yolk sac of one-cell stage embryos, we confirmed that, after 72 h, ZIKV successfully infected larvae, and the physical condition of the virus-infected hosts included gross morphological changes in surviving embryos (84%), with a reduction in larval head size and retinal damage characterized by increased thickness of the lens and inner nuclear layer. Changes in locomotor activity and the inability to perceive visual stimuli are a result of changes in retinal morphology caused by ZIKV. Furthermore, we demonstrated the ability of ZIKV to replicate in zebrafish larvae and infect new healthy larvae, impairing their visual and neurological functions. These data reinforce the deleterious activity of ZIKV in the brain and visual structures and establish the zebrafish as a model to study the molecular mechanisms involved in the pathology of the virus.
Collapse
Affiliation(s)
- Adolfo Luis Almeida Maleski
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, São Paulo 05503-900, Brazil; (A.L.A.M.); (J.G.S.R.); (J.T.G.B.); (M.L.-F.)
- Laboratory of Neuropharmacological Studies (LABEN), Post-Graduation Program of Pharmaceutical Science, Federal University of Sergipe, São Paulo 05503-009, Brazil;
| | - Joao Gabriel Santos Rosa
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, São Paulo 05503-900, Brazil; (A.L.A.M.); (J.G.S.R.); (J.T.G.B.); (M.L.-F.)
| | - Jefferson Thiago Gonçalves Bernardo
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, São Paulo 05503-900, Brazil; (A.L.A.M.); (J.G.S.R.); (J.T.G.B.); (M.L.-F.)
| | | | - Cristiani Isabel Banderó Walker
- Laboratory of Neuropharmacological Studies (LABEN), Post-Graduation Program of Pharmaceutical Science, Federal University of Sergipe, São Paulo 05503-009, Brazil;
| | - Monica Lopes-Ferreira
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, São Paulo 05503-900, Brazil; (A.L.A.M.); (J.G.S.R.); (J.T.G.B.); (M.L.-F.)
| | - Carla Lima
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, São Paulo 05503-900, Brazil; (A.L.A.M.); (J.G.S.R.); (J.T.G.B.); (M.L.-F.)
- Correspondence:
| |
Collapse
|
6
|
Mauricio B, Mailho-Fontana PL, Sato LA, Barbosa FF, Astray RM, Kupfer A, Brodie ED, Jared C, Antoniazzi MM. Morphology of the Cutaneous Poison and Mucous Glands in Amphibians with Particular Emphasis on Caecilians ( Siphonops annulatus). Toxins (Basel) 2021; 13:toxins13110779. [PMID: 34822563 PMCID: PMC8617868 DOI: 10.3390/toxins13110779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 01/18/2023] Open
Abstract
Caecilians (order Gymnophiona) are apodan, snake-like amphibians, usually with fossorial habits, constituting one of the most unknown groups of terrestrial vertebrates. As in orders Anura (frogs, tree frogs and toads) and Caudata (salamanders and newts), the caecilian skin is rich in mucous glands, responsible for body lubrication, and poison glands, producing varied toxins used in defence against predators and microorganisms. Whereas in anurans and caudatans skin gland morphology has been well studied, caecilian poison glands remain poorly elucidated. Here we characterised the skin gland morphology of the caecilian Siphonops annulatus, emphasising the poison glands in comparison to those of anurans and salamanders. We showed that S. annulatus glands are similar to those of salamanders, consisting of several syncytial compartments full of granules composed of protein material but showing some differentiated apical compartments containing mucus. An unusual structure resembling a mucous gland is frequently observed in lateral/apical position, apparently connected to the main duct. We conclude that the morphology of skin poison glands in caecilians is more similar to salamander glands when compared to anuran glands that show a much-simplified structure.
Collapse
Affiliation(s)
- Beatriz Mauricio
- Laboratory of Structural Biology, Instituto Butantan, São Paulo 05509-000, Brazil; (B.M.); (P.L.M.-F.); (L.A.S.); (M.M.A.)
| | - Pedro Luiz Mailho-Fontana
- Laboratory of Structural Biology, Instituto Butantan, São Paulo 05509-000, Brazil; (B.M.); (P.L.M.-F.); (L.A.S.); (M.M.A.)
| | - Luciana Almeida Sato
- Laboratory of Structural Biology, Instituto Butantan, São Paulo 05509-000, Brazil; (B.M.); (P.L.M.-F.); (L.A.S.); (M.M.A.)
| | - Flavia Ferreira Barbosa
- Multipurpose Laboratory, Instituto Butantan, São Paulo 05503-000, Brazil; (F.F.B.); (R.M.A.)
| | - Renato Mancini Astray
- Multipurpose Laboratory, Instituto Butantan, São Paulo 05503-000, Brazil; (F.F.B.); (R.M.A.)
| | - Alexander Kupfer
- Department of Zoology, State Museum of Natural History, 70191 Stuttgart, Germany;
| | - Edmund D. Brodie
- Department of Biology, Utah State University, Logan, UT 84322, USA;
| | - Carlos Jared
- Laboratory of Structural Biology, Instituto Butantan, São Paulo 05509-000, Brazil; (B.M.); (P.L.M.-F.); (L.A.S.); (M.M.A.)
- Correspondence:
| | - Marta Maria Antoniazzi
- Laboratory of Structural Biology, Instituto Butantan, São Paulo 05509-000, Brazil; (B.M.); (P.L.M.-F.); (L.A.S.); (M.M.A.)
| |
Collapse
|
7
|
Bernardino TC, Astray RM, Pereira CA, Boldorini VL, Antoniazzi MM, Jared SGS, Núñez EGF, Jorge SAC. Production of Rabies VLPs in Insect Cells by Two Monocistronic Baculoviruses Approach. Mol Biotechnol 2021; 63:1068-1080. [PMID: 34228257 DOI: 10.1007/s12033-021-00366-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/28/2021] [Indexed: 12/12/2022]
Abstract
Rabies is an ancient zoonotic disease that still causes the death of over 59,000 people worldwide each year. The rabies lyssavirus encodes five proteins, including the envelope glycoprotein and the matrix protein. RVGP is the only protein exposed on the surface of viral particle, and it can induce immune response with neutralizing antibody formation. RVM has the ability to assist with production process of virus-like particles. VLPs were produced in recombinant baculovirus system. In this work, two recombinant baculoviruses carrying the RVGP and RVM genes were constructed. From the infection and coinfection assays, we standardized the best multiplicity of infection and the best harvest time. Cell supernatants were collected, concentrated, and purified by sucrose gradient. Each step was used for protein detection through immunoassays. Sucrose gradient analysis enabled to verify the separation of VLPs from rBV. Through the negative contrast technique, we visualized structures resembling rabies VLPs produced in insect cells and rBV in the different fractions of the sucrose gradient. Using ELISA to measure total RVGP, the recovery efficiency of VLPs at each stage of the purification process was verified. Thus, these results encourage further studies to confirm whether rabies VLPs are a promising candidate for a veterinary rabies vaccine.
Collapse
Affiliation(s)
- Thaissa Consoni Bernardino
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil
| | - Renato Mancini Astray
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil
| | - Carlos Augusto Pereira
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil
| | - Vera Lucia Boldorini
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil
| | | | | | - Eutimio Gustavo Fernández Núñez
- Grupo de Engenharia de Bioprocessos. Escola de Artes, Ciências E Humanidades (EACH), Universidade de São Paulo, São Paulo, SP, Brazil
| | - Soraia Attie Calil Jorge
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil.
| |
Collapse
|
8
|
Amaral MS, Goulart E, Caires-Júnior LC, Morales-Vicente DA, Soares-Schanoski A, Gomes RP, Olberg GGDO, Astray RM, Kalil JE, Zatz M, Verjovski-Almeida S. Differential gene expression elicited by ZIKV infection in trophoblasts from congenital Zika syndrome discordant twins. PLoS Negl Trop Dis 2020; 14:e0008424. [PMID: 32745093 PMCID: PMC7425990 DOI: 10.1371/journal.pntd.0008424] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 08/13/2020] [Accepted: 05/26/2020] [Indexed: 12/12/2022] Open
Abstract
Zika virus (ZIKV) causes congenital Zika syndrome (CZS), which is characterized by fetal demise, microcephaly and other abnormalities. ZIKV in the pregnant woman circulation must cross the placental barrier that includes fetal endothelial cells and trophoblasts, in order to reach the fetus. CZS occurs in ~1-40% of cases of pregnant women infected by ZIKV, suggesting that mothers' infection by ZIKV during pregnancy is not deterministic for CZS phenotype in the fetus. Therefore, other susceptibility factors might be involved, including the host genetic background. We have previously shown that in three pairs of dizygotic twins discordant for CZS, neural progenitor cells (NPCs) from the CZS-affected twins presented differential in vitro ZIKV susceptibility compared with NPCs from the non-affected. Here, we analyzed human-induced-pluripotent-stem-cell-derived (hiPSC-derived) trophoblasts from these twins and compared by RNA-Seq the trophoblasts from CZS-affected and non-affected twins. Following in vitro exposure to a Brazilian ZIKV strain (ZIKVBR), trophoblasts from CZS-affected twins were significantly more susceptible to ZIKVBR infection when compared with trophoblasts from the non-affected. Transcriptome profiling revealed no differences in gene expression levels of ZIKV candidate attachment factors, IFN receptors and IFN in the trophoblasts, either before or after ZIKVBR infection. Most importantly, ZIKVBR infection caused, only in the trophoblasts from CZS-affected twins, the downregulation of genes related to extracellular matrix organization and to leukocyte activation, which are important for trophoblast adhesion and immune response activation. In addition, only trophoblasts from non-affected twins secreted significantly increased amounts of chemokines RANTES/CCL5 and IP10 after infection with ZIKVBR. Overall, our results showed that trophoblasts from non-affected twins have the ability to more efficiently activate genes that are known to play important roles in cell adhesion and in triggering the immune response to ZIKV infection in the placenta, and this may contribute to predict protection from ZIKV dissemination into fetuses' tissues.
Collapse
Affiliation(s)
| | - Ernesto Goulart
- Departmento de Genética e Biologia Evolutiva, Centro de Pesquisas sobre o Genoma Humano e Células Tronco, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Luiz Carlos Caires-Júnior
- Departmento de Genética e Biologia Evolutiva, Centro de Pesquisas sobre o Genoma Humano e Células Tronco, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - David Abraham Morales-Vicente
- Laboratório de Parasitologia, Instituto Butantan, São Paulo, Brazil
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | | | | | | | | | - Jorge E. Kalil
- Laboratório de Imunologia, Faculdade de Medicina e Instituto do Coração, Universidade de São Paulo, São Paulo, Brazil
| | - Mayana Zatz
- Departmento de Genética e Biologia Evolutiva, Centro de Pesquisas sobre o Genoma Humano e Células Tronco, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Sergio Verjovski-Almeida
- Laboratório de Parasitologia, Instituto Butantan, São Paulo, Brazil
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
- * E-mail:
| |
Collapse
|
9
|
Pilatti L, Mancini Astray R, Rocca MP, Barbosa FF, Jorge SAC, Butler M, de Fátima Pires Augusto E. Purification of rabies virus glycoprotein produced in Drosophila melanogaster S2 cells: An efficient immunoaffinity method. Biotechnol Prog 2020; 36:e3046. [PMID: 32628317 DOI: 10.1002/btpr.3046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 10/28/2019] [Revised: 06/29/2020] [Accepted: 07/04/2020] [Indexed: 11/12/2022]
Abstract
Most rabies vaccines are based on inactivated virus, which production process demands a high level of biosafety structures. In the past decades, recombinant rabies virus glycoprotein (RVGP) produced in several expression systems has been extensively studied to be used as an alternative vaccine. The immunogenic characteristics of this protein depend on its correct conformation, which is present only after the correct post-translational modifications, typically performed by animal cells. The main challenge of using this protein as a vaccine candidate is to keep its trimeric conformation after the purification process. We describe here a new immunoaffinity chromatography method using a monoclonal antibody for RVGP Site II for purification of recombinant rabies virus glycoprotein expressed on the membrane of Drosophila melanogaster S2 cells. RVGP recovery achieved at least 93%, and characterization analysis showed that the main antigenic proprieties were preserved after purification.
Collapse
Affiliation(s)
- Livia Pilatti
- Science and Technology Institute, Federal University of São Paulo (UNIFESP), São José dos Campos, Brazil.,Viral Immunology Laboratory, Butantan Institute, São Paulo, Brazil
| | | | | | | | | | - Michael Butler
- National Institute for Biotechnology Research and Training (NIBRT), Dublin, Ireland
| | | |
Collapse
|
10
|
Amaral MP, Apostolico JDS, Tomita N, Coirada FC, Lunardelli VAS, Fernandes ER, Souza HFS, Astray RM, Boscardin SB, Rosa DS. Homologous prime-boost with Zika virus envelope protein and poly (I:C) induces robust specific humoral and cellular immune responses. Vaccine 2020; 38:3653-3664. [PMID: 32247567 DOI: 10.1016/j.vaccine.2020.03.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 03/18/2020] [Accepted: 03/19/2020] [Indexed: 01/18/2023]
Abstract
The recent outbreaks of Zika virus (ZIKV) infection and the potential association with Guillain-Barré syndrome in adults and with congenital abnormalities have highlighted the urgency for an effective vaccine. The ZIKV Envelope glycoprotein (EZIKV) is the most abundant protein on the virus surface, and has been evaluated together with the pre-membrane protein (prM) of the viral coat as a vaccine candidate in clinical trials. In this study, we performed a head-to-head comparison of the immune response induced by different EZIKV-based vaccine candidates in mice. We compared different platforms (DNA, recombinant protein), adjuvants (poly (I:C), CpG ODN 1826) and immunization strategies (homologous, heterologous). The hierarchy of adjuvant potency showed that poly (I:C) was a superior adjuvant than CpG ODN. While poly (I:C) assisted immunization reached a plateau in antibody titers after two doses, the CpG ODN group required an extra immunization dose. Besides, the administration of poly (I:C) induced higher EZIKV-specific cellular immune responses than CpG ODN. We also show that immunization with homologous prime-boost EZIKV protein + poly (I:C) regimen induced a more robust humoral response than homologous DNA (pVAX-EZIKV) or heterologous regimens (DNA/protein or protein/DNA). A detailed analysis of cellular immune responses revealed that homologous (EZIKV + poly (I:C)) and heterologous (pVAX-EZIKV/EZIKV + poly (I:C)) prime-boost regimens induced the highest magnitude of IFN-γ secreting cells and cytokine-producing CD4+ T cells. Overall, our data demonstrate that homologous EZIKV + poly (I:C) prime-boost immunization is sufficient to induce more robust specific-EZIKV humoral and cellular immune responses than the other strategies that contemplate homologous DNA (pVAX-EZIKV) or heterologous (pVAX-EZIKV/EZIKV + poly (I:C), and vice-versa) immunizations.
Collapse
Affiliation(s)
- Marcelo Pires Amaral
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil
| | - Juliana de Souza Apostolico
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil; Institute for Investigation in Immunology (iii), INCT, São Paulo, Brazil
| | - Nádia Tomita
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil
| | - Fernanda Caroline Coirada
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil
| | - Victória Alves Santos Lunardelli
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil; Institute for Investigation in Immunology (iii), INCT, São Paulo, Brazil
| | - Edgar Ruz Fernandes
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil
| | - Higo Fernando Santos Souza
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Silvia Beatriz Boscardin
- Institute for Investigation in Immunology (iii), INCT, São Paulo, Brazil; Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Daniela Santoro Rosa
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil; Institute for Investigation in Immunology (iii), INCT, São Paulo, Brazil.
| |
Collapse
|
11
|
de Rezende AG, Fernández Núñez EG, Astray RM, Puglia ALP, Pereira CA, Jorge SAC. An optimization study for expression of the rabies virus glycoprotein (RVGP) in mammalian cell lines using the Semliki Forest virus (SFV). J Biotechnol 2019; 304:63-69. [PMID: 31442500 DOI: 10.1016/j.jbiotec.2019.08.012] [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: 05/02/2019] [Revised: 08/06/2019] [Accepted: 08/19/2019] [Indexed: 11/24/2022]
Abstract
The Semliki Forest virus (SFV) viral vector has been widely used for transient protein expression. This study aimed to analyze comprehensively the capacity of SFV vector to express rabies lyssavirus glycoprotein (RVGP) in mammalian cells. The assessed parameters were transfection strategy, multiplicity of infection (MOI), harvest time and mammalian cell host. Two transfection approaches, electroporation and lipofection were evaluated to obtain the recombinant SFV, and the electroporation was found to be the most effective. Viral quantification by RT-qPCR was performed to elucidate the relation between the amount of recombinant virus utilized in the infection process and the production levels of the heterologous protein. Four different multiplicities of infection (MOIs = 1; 10; 15; 50) were evaluated using five mammalian cell lines: BHK-21, HuH-7, Vero, L929, and HEK-293T. Protein expression was assessed at two harvest times after infection (24 and 48 h). The recombinant protein generated was characterized by western blot, dot blot, and indirect immunofluorescence (IIF), while its concentration was determined by enzyme-linked immunosorbent assay (ELISA). Similar expression patterns were observed in cell lines BHK-21, HEK-293T, L929, and Vero, with higher RVGP production in the first 24 h. The BHK-21 cells showed yields of up to 4.3 μg per 106 cells when lower MOIs (1 and 10) were used. The HEK-293 T cells also showed similar production (4.3 μg per 106 cells) with MOI of 1, while the L929 and Vero cell lines showed lower expression rates of 2.82 and 1.26 μg per 106 cells, respectively. These cell lines showed lower expression levels at 48 h after infection compared to 24 h. Controversially, in the case of the HuH-7 cell line, RVGP production was higher at 48 h after infection (4.0 μg per 106 cells) and using MOIs of 15 and 50. This work may contribute to optimize the RVGP production using SFV system in mammalian cells. This study can also substantiate for example, the development of approaches that use of SFV for applications for other protein expressions and suggests values for relevant parameters and cell lines of this biotechnique.
Collapse
Affiliation(s)
| | - Eutimio Gustavo Fernández Núñez
- Laboratório de Células Animais, Departamento de Engenharia Química, Escola Politécnica, Universidade de São Paulo, São Paulo, SP, Brazil; Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo, São Paulo, SP, Brazil
| | | | | | | | | |
Collapse
|
12
|
Lemos MAN, Patiño SFS, Bernardino TC, Coroadinha AS, Soares H, Astray RM, Pereira CA, Jorge SAC. Intracellular Delivery of HCV NS3p gene using vectored particles. J Biotechnol 2018; 274:33-39. [PMID: 29577966 DOI: 10.1016/j.jbiotec.2018.03.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 01/08/2018] [Accepted: 03/18/2018] [Indexed: 02/07/2023]
Abstract
Viral hepatitis caused by the hepatitis C virus (HCV) affects millions of people worldwide. The non-structural protein 3 (NS3), one of the most conserved proteins in HCV, is the target of many therapeutic studies. The NS3 protease domain (NS3p) has a range of cytotoxic T lymphocyte (CTL) epitopes, and synthesizing the protein inside the cells is the most appropriate way to present it to the immune system. We developed a tool to study this kind of presentation, using two vectored particle (VP) systems, one based on the Semliki Forest virus (SFV) and the other on HCV pseudoparticles (HCVpp), both carrying the protease domain of the NS3 gene. In addition to producing the particles, we developed a method to quantify these VPs using qRT-PCR. We produced batches of approximately 2.4 × 104 SFV-NS3p/μL and 4.0 × 102 HCVpp-NS3p/μL. BHK-21 and HuH-7 cells treated with the VPs expressed the NS3 protein, thus showing the functionality of this system.
Collapse
Affiliation(s)
| | | | | | - Ana Sofia Coroadinha
- Cell Line Development and Molecular Biotechnology Laboratory, iBET - Instituto de Biologia Experimental e Tecnológica, Av. República, Qta. do Marquês, Oeiras Portugal
| | - Hugo Soares
- Cell Line Development and Molecular Biotechnology Laboratory, iBET - Instituto de Biologia Experimental e Tecnológica, Av. República, Qta. do Marquês, Oeiras Portugal
| | - Renato Mancini Astray
- Laboratório de Imunologia Viral, Instituto Butantan, Avenida Vital Brasil, 1500, São Paulo Brazil
| | - Carlos Augusto Pereira
- Laboratório de Imunologia Viral, Instituto Butantan, Avenida Vital Brasil, 1500, São Paulo Brazil
| | - Soraia Attie Calil Jorge
- Laboratório de Imunologia Viral, Instituto Butantan, Avenida Vital Brasil, 1500, São Paulo Brazil.
| |
Collapse
|
13
|
Decarli MC, dos Santos DP, Astray RM, Ventini-Monteiro DC, Jorge SAC, Correia DM, de Sá da Silva J, Rocca MP, Langoni H, Menozzi BD, Pereira CA, Suazo CAT. DROSOPHILA S2 cell culture in a WAVE Bioreactor: potential for scaling up the production of the recombinant rabies virus glycoprotein. Appl Microbiol Biotechnol 2018; 102:4773-4783. [DOI: 10.1007/s00253-018-8962-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 10/17/2022]
|
14
|
Caires-Júnior LC, Goulart E, Melo US, Araujo BHS, Alvizi L, Soares-Schanoski A, de Oliveira DF, Kobayashi GS, Griesi-Oliveira K, Musso CM, Amaral MS, daSilva LF, Astray RM, Suárez-Patiño SF, Ventini DC, Gomes da Silva S, Yamamoto GL, Ezquina S, Naslavsky MS, Telles-Silva KA, Weinmann K, van der Linden V, van der Linden H, de Oliveira JRM, Arrais NMR, Melo A, Figueiredo T, Santos S, Meira JGC, Passos SD, de Almeida RP, Bispo AJB, Cavalheiro EA, Kalil J, Cunha-Neto E, Nakaya H, Andreata-Santos R, de Souza Ferreira LC, Verjovski-Almeida S, Ho PL, Passos-Bueno MR, Zatz M. Discordant congenital Zika syndrome twins show differential in vitro viral susceptibility of neural progenitor cells. Nat Commun 2018; 9:475. [PMID: 29396410 PMCID: PMC5797251 DOI: 10.1038/s41467-017-02790-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 12/28/2017] [Indexed: 12/28/2022] Open
Abstract
Congenital Zika syndrome (CZS) causes early brain development impairment by affecting neural progenitor cells (NPCs). Here, we analyze NPCs from three pairs of dizygotic twins discordant for CZS. We compare by RNA-Seq the NPCs derived from CZS-affected and CZS-unaffected twins. Prior to Zika virus (ZIKV) infection the NPCs from CZS babies show a significantly different gene expression signature of mTOR and Wnt pathway regulators, key to a neurodevelopmental program. Following ZIKV in vitro infection, cells from affected individuals have significantly higher ZIKV replication and reduced cell growth. Whole-exome analysis in 18 affected CZS babies as compared to 5 unaffected twins and 609 controls excludes a monogenic model to explain resistance or increased susceptibility to CZS development. Overall, our results indicate that CZS is not a stochastic event and depends on NPC intrinsic susceptibility, possibly related to oligogenic and/or epigenetic mechanisms. Zika virus (ZIKV) infection can cause congenital Zika syndrome (CZS), but the underlying mechanisms are poorly understood. Here, the authors generate neural progenitor cells from dizygotic twins with a discordant phenotype regarding CZS and study their response to ZIKV infection.
Collapse
Affiliation(s)
- Luiz Carlos Caires-Júnior
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Ernesto Goulart
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Uirá Souto Melo
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Bruno Henrique Silva Araujo
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas - SP, 13083-970, Brazil.,Neuroscience laboratory, Department of Neurology and Neurosurgery, Federal University of São Paulo-UNIFESP/EPM, São Paulo - SP, 04039-002, Brazil
| | - Lucas Alvizi
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | | | - Danyllo Felipe de Oliveira
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Gerson Shigeru Kobayashi
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Karina Griesi-Oliveira
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil.,Albert Einstein Hospital, São Paulo - SP, 05652-900, Brazil
| | - Camila Manso Musso
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | | | - Lucas Ferreira daSilva
- Department of Biochemistry, Institute of Chemistry, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | | | | | | | - Sérgio Gomes da Silva
- Albert Einstein Hospital, São Paulo - SP, 05652-900, Brazil.,Universidade de Mogi das Cruzes, Mogi das Cruzes - SP, 08780-911, Brazil
| | - Guilherme Lopes Yamamoto
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Suzana Ezquina
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Michel Satya Naslavsky
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Kayque Alves Telles-Silva
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Karina Weinmann
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | | | | | - João Ricardo Mendes de Oliveira
- Neuropsychiatry Department and KeizoAsami Laboratory, Federal University of Pernambuco (UFPE), Recife - PE, 50670-901, Brazil
| | | | | | - Thalita Figueiredo
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Silvana Santos
- Department of Biology, Paraíba State University (UEPB), Campina Grande - PB, 58429-500, Brazil
| | | | - Saulo Duarte Passos
- Infectious pediatric laboratory, Medicine School of Jundiaí, Jundiaí - SP, 13202-550, Brazil
| | - Roque Pacheco de Almeida
- Division of Immunology and Molecular Biology Laboratory, Federal University of Sergipe (UFS), Aracaju - SP, 49100-000, Brazil
| | - Ana Jovina Barreto Bispo
- Division of Immunology and Molecular Biology Laboratory, Federal University of Sergipe (UFS), Aracaju - SP, 49100-000, Brazil
| | - Esper Abrão Cavalheiro
- Neuroscience laboratory, Department of Neurology and Neurosurgery, Federal University of São Paulo-UNIFESP/EPM, São Paulo - SP, 04039-002, Brazil
| | - Jorge Kalil
- Butantan Institute, São Paulo - SP, 05503-900, Brazil
| | - Edécio Cunha-Neto
- Heart Institute, Faculty of Medicine, University of São Paulo (USP), São Paulo - SP, 05403-900, Brazil
| | - Helder Nakaya
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Robert Andreata-Santos
- Vaccine Development Laboratory, Department of Microbiology, Institute of Biomedical Science, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Luis Carlos de Souza Ferreira
- Vaccine Development Laboratory, Department of Microbiology, Institute of Biomedical Science, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Sergio Verjovski-Almeida
- Butantan Institute, São Paulo - SP, 05503-900, Brazil.,Department of Biochemistry, Institute of Chemistry, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Paulo Lee Ho
- Butantan Institute, São Paulo - SP, 05503-900, Brazil
| | - Maria Rita Passos-Bueno
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil
| | - Mayana Zatz
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of São Paulo (USP), São Paulo - SP, 05508-900, Brazil.
| |
Collapse
|
15
|
Leme J, Fernández Núñez EG, de Almeida Parizotto L, Chagas WA, dos Santos ES, Caricati ATP, de Rezende AG, da Costa BLV, Monteiro DCV, Boldorini VLL, Jorge SAC, Astray RM, Pereira CA, Caricati CP, Tonso A. A multivariate calibration procedure for UV/VIS spectrometric monitoring of BHK-21 cell metabolism and growth. Biotechnol Prog 2013; 30:241-8. [DOI: 10.1002/btpr.1847] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jaci Leme
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | - Eutimio Gustavo Fernández Núñez
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
- Dept. de Ciências Biológicas; Universidade Estadual Paulista “Júlio de Mesquita Filho” Campus-Assis, Avenida Dom Antonio 2100, Bairro Parque Universitário; 19806-900 Assis SP - Brasil
| | - Letícia de Almeida Parizotto
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
| | - Wagner Antonio Chagas
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | - Erica Salla dos Santos
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | - Aline Tojeira Prestia Caricati
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | | | - Bruno Labate Vale da Costa
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
- Laboratório de Biotecnologia Industrial, Núcleo de Bionanomanufatura; Instituto de Pesquisas Tecnológicas do Estado de São Paulo, Av. Prof. Almeida Prado 532 Cid. Universitária - Butantã; 05508-901 São Paulo SP-Brazil
| | | | - Vera Lucia Lopes Boldorini
- Laboratório de Imunologia Viral; Instituto Butantan. Av. Vital Brasil; 1500 Butantã 05503-900 São Paulo SP-Brazil
| | - Soraia Attie Calil Jorge
- Laboratório de Imunologia Viral; Instituto Butantan. Av. Vital Brasil; 1500 Butantã 05503-900 São Paulo SP-Brazil
| | - Renato Mancini Astray
- Laboratório de Imunologia Viral; Instituto Butantan. Av. Vital Brasil; 1500 Butantã 05503-900 São Paulo SP-Brazil
| | - Carlos Augusto Pereira
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
- Laboratório de Imunologia Viral; Instituto Butantan. Av. Vital Brasil; 1500 Butantã 05503-900 São Paulo SP-Brazil
| | - Celso Pereira Caricati
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | - Aldo Tonso
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
| |
Collapse
|
16
|
Astray RM, Jorge SAC, Lemos MAN, Yokomizo AY, Boldorini VLL, Puglia ALP, Ribeiro OG, Pereira CA. Kinetic studies of recombinant rabies virus glycoprotein (RVGP) cDNA transcription and mRNA translation in Drosophila melanogaster S2 cell populations. Cytotechnology 2013; 65:829-38. [PMID: 23340966 DOI: 10.1007/s10616-012-9522-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Accepted: 11/20/2012] [Indexed: 10/27/2022] Open
Abstract
Recombinant rabies virus glycoprotein (RVGP) was expressed in cell membranes of stably transfected Drosophila S2 cells using constitutive and inducible promoters. Although with quantitative differences of RVGP expression in both systems, the cDNA transcription, as evaluated by relative RVGP mRNA levels measured by qRT-PCR, sustained the amount of RVGP producing cells and the RVGP volumetric (ΠRVGP) productivity. At the transition to the stationary cell growth phase, once the cell culture slowed down its rate of multiplication, an accumulation of RVGP mRNA and RVGP was clearly observed in both cell populations. Nevertheless, cell cultures performed under sub-optimal temperatures indicated that an envisaged increase in the RVGP production is not only dependent on cell growth rate, but essentially on optimal cell metabolic state.
Collapse
Affiliation(s)
- R M Astray
- Laboratório de Imunologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, 05503-900, Brazil,
| | | | | | | | | | | | | | | |
Collapse
|
17
|
Lemos MAN, Santos ASD, Astray RM, Pereira CA, Jorge SAC. Rabies virus glycoprotein expression in Drosophila S2 cells. I: design of expression/selection vectors, subpopulations selection and influence of sodium butyrate and culture medium on protein expression. J Biotechnol 2009; 143:103-10. [PMID: 19615415 DOI: 10.1016/j.jbiotec.2009.07.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 06/30/2009] [Accepted: 07/08/2009] [Indexed: 11/30/2022]
Abstract
The cDNA encoding the rabies virus glycoprotein (RVGP) gene was cloned in expression plasmids under the control of the inductive metallothionein promoter. They were designed in order to bear or not a secretion signal (i) and a cDNA coding for the selection hygromycin. These vectors were transfected into S2 cells, cell populations selected and subpopulations were then obtained by reselection with hygromycin. Cell cultures were examined for kinetics of cell growth, detection of RVGP mRNA and expression of RVGP. All cell populations were shown to express the RVGP mRNA upon induction. S2MtRVGPHy cell population, transfected with one vector that contains RGPV gene and selection gene, was shown to express higher amounts of RVGP as evaluated by flow cytometry ( approximately 52%) and ELISA (0.64 microg/10(7)cells at day 7). Subpopulation selection allowed a higher RVGP expression, specially for the S2MtRVGPHy(+) (5.5 microg/10(7)cells at day 7). NaBu treatment leading to lower cell growth and higher RVGP expression allowed an even higher RVGP synthesis by S2MtRVGPHy(+) (8.4 microg/10(7)cells at day 7). SF900II medium leading to a higher S2MtRVGPHy(+)cell growth allowed a higher final RVGP synthesis in this cell culture. RVGP synthesis may be optimized by the expression/selection vectors design, cell subpopulations selection, chromatin exposure and culture medium employed.
Collapse
|