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Hashemzadeh MS, Mousavy SJ, Dorostkar R, Fotouhi F, Ebrahimi F. Designing Two Individual AcMNPV Polyhedrin-Plus Bac-to-Bac Expression System in order to Express GFP and CPV-VP2 in Insect Cells. IRANIAN JOURNAL OF BIOTECHNOLOGY 2018; 15:172-178. [PMID: 29845066 DOI: 10.15171/ijb.1558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 09/04/2016] [Accepted: 09/05/2017] [Indexed: 01/24/2023]
Abstract
Background: The importance of viral protein-2 (VP2) of canine parvovirus (CPV) in binding to human cancer cells, production of veterinary vaccines and diagnostic kits has motivated several researches on producing this protein. Objectives: Our purpose was to construct recombinant bacmid shuttle vectors expressing VP2 of CPV using Bac-to-Bac baculoviral expression system. Materials and Methods: Mini-Tn7 transposones engineered in pFastBac1 donor vectors were used to construct expression cassettes of GFP and CPV-VP2. The plasmids were transferred into E. coli DH10Bac competent cells. Site-specific transposition of the genes into bacmid was accomplished using helper plasmid. Occurrence of Transposition was confirmed via PCR using specific primers and PUC/M13 universal primers. The recombinant bacmid DNAs were transfected into Sf9 cells using cationic lipids to generate new recombinant baculoviruses expressing GFP and CPV-VP2. GFP and VP2 expressions were evaluated by fluorescence microscopy and western analysis, respectively. Results: Cloning, subcloning and recombination processes of both GFP and VP2 were accomplished and verified. Accuracy of transfection process was confirmed by GFP fluorescence microscopy.VP2 expression was verified by SDS-PAGE and western analysis. Conclusions: Two Bac-to-Bac expression systems were designed to produce recombinant VP2 and GFP in insect cells.
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Affiliation(s)
- Mohammad Sadegh Hashemzadeh
- Department of Biology, Faculty of Basic Sciences, Imam Hossein University, Tehran, Iran.,Applied Virology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Seyed Jafar Mousavy
- Department of Biology, Faculty of Basic Sciences, Imam Hossein University, Tehran, Iran
| | - Ruhollah Dorostkar
- Applied Virology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Fatemeh Fotouhi
- Department of Influenza and other Respiratory viruses, Pasteur Institute of Iran, Tehran, Iran
| | - Firouz Ebrahimi
- Department of Biology, Faculty of Basic Sciences, Imam Hossein University, Tehran, Iran
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Reuveny S, Kim YJ, Kemp CW, Shiloach J. Production of recombinant proteins in high-density insect cell cultures. Biotechnol Bioeng 2010; 42:235-9. [PMID: 18612984 DOI: 10.1002/bit.260420211] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The effect of the growth phase of Spodoptera frugiperda (Sf9) cells on the production of recombinant proteins (beta-galactosidase and glucocerebrosidase) was investigated. Cells infected with the recombinant Autographa californica nuclear polyhedrosis virus at the late exponential and stationary phases yielded low quantities of expressed protein. Highest enzyme yields were obtained using Sf9 cells from the early exponential phase (0.9 mg beta-galactosidase/10(6) cells and 1.7 microg glucocerebrosidase/10(6) cells). Infection of resuspension of cells collected from various phases of growth in fresh medium resulted in 75% restoration of maximal expression levels. This finding suggested either nutrient limitation or waste product accumulation as the cause of the decrease in productivity at the latter phases of growth. Further experiments revealed that the highest productivity levels could be obtained with cultures of Sf9 cells grown in a fermentor to a cell concentration of 4 x 10(6) mL(-1). The medium needed to be replaced prior to infection with the recombinant virus and supplemented with a mixture of glucose, L-glutamine, and yeastolate ultrafiltrate.
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Affiliation(s)
- S Reuveny
- Biotechnology Unit, LCDB, NIDDK, National Institutes of Health, Bethesda, Maryland 20892, USA
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Daubnerová I, Roller L, Žitňan D. Transgenesis approaches for functional analysis of peptidergic cells in the silkworm Bombyx mori. Gen Comp Endocrinol 2009; 162:36-42. [PMID: 19111552 PMCID: PMC2854327 DOI: 10.1016/j.ygcen.2008.11.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2008] [Revised: 11/14/2008] [Accepted: 11/18/2008] [Indexed: 10/21/2022]
Abstract
The domestic silkworm, Bombyx mori represents an insect model of great scientific and economic importance. Besides the establishment of a stable germline transformation using the PiggyBac vector, technically feasible methods for in vivo gene delivery and transient gene expression were developed using viral based vectors, especially Sindbis viruses and baculoviruses. The recombinant baculovirus, Autographa californica multiple nucleopolyhedrovirus (AcMNPV), commonly used for large-scale protein production in permissive cell lines or insects, has been used for foreign gene transfer into specific peptidergic cells of B. mori in vivo. Since targeted gene expression is essential for functional analysis of neuropeptide genes and their receptors, the baculovirus-mediated gene transfer can serve as a reliable approach in reverse genetic studies in the silkworm. We review various strategies employing the baculovirus vector system for transient expression of molecular markers and transcription factors in specific peptidergic cells to investigate their roles in B. mori. We also use this system for functional analysis of neuropeptide signaling in the ecdysis behavioral sequence. Our data indicate that the AcMNPV vector is suitable for efficient delivery of foreign genes and their expression directed into specific peptidergic neurons and endocrine cells of B. mori larvae and pupae. However, some modifications of the vector and steps for optimization are necessary to minimize negative effects of viral infection on the host development. The transient gene expression using the AcMNPV and other virus vectors are promising tools for analysis of molecular mechanisms underlying various neuroendocrine processes during development of B. mori.
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Affiliation(s)
- Ivana Daubnerová
- Institute of Zoology, Slovak Academy of Sciences, SAV, Dúbravská cesta 9, 84506 Bratislava, Slovakia
- Department of Genetics, Faculty of Natural Sciences, Comenius University, 84205 Bratislava, Slovakia
| | - Ladislav Roller
- Institute of Zoology, Slovak Academy of Sciences, SAV, Dúbravská cesta 9, 84506 Bratislava, Slovakia
| | - Dušan Žitňan
- Institute of Zoology, Slovak Academy of Sciences, SAV, Dúbravská cesta 9, 84506 Bratislava, Slovakia
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Aloia AL, Glatz RV, McMurchie EJ, Leifert WR. GPCR expression using baculovirus-infected Sf9 cells. Methods Mol Biol 2009; 552:115-129. [PMID: 19513645 DOI: 10.1007/978-1-60327-317-6_8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Expression of proteins in insect cells using recombinant baculoviruses has gained wide use in the G protein-coupled receptor (GPCR) community. This expression system produces high yields of functional receptor, is able to perform post-translational modifications, and is readily adaptable to large-scale culture. Here, we describe the generic methods for expressing a GPCR using baculovirus-infected insect cells, including the maintenance of insect cell culture. Data are presented for polyhedrin promoter-driven expression of a C-terminal 6 x histidine-tagged mammalian M(2) muscarinic receptor in Sf9 cells. Results demonstrate that expressed receptor could be detected and quantified using radiolabeled ligand binding, that expression was maximal at approximately 72 h post-infection, and that expression levels could be altered by addition of various ligands to cultures of infected insect cells.
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Affiliation(s)
- Amanda L Aloia
- School of Biology, Flinders University, Bedford Park, SA, Australia
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An SH, Wang D, Zhang-Nv Y, Guo ZJ, Xu HJ, Sun JX, Zhang CX. Characterization of a late expression gene, Open reading frame 128 of Helicoverpa armigera single nucleocapsid nucleopolyhedrovirus. Arch Virol 2005; 150:2453-66. [PMID: 16052278 DOI: 10.1007/s00705-005-0605-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2005] [Accepted: 06/03/2005] [Indexed: 11/27/2022]
Abstract
Helicoverpa armigera single nucleocapsid nucleopolyhedrovirus (HearSNPV) is a single embedded NPV pathogenic to the bollworm, which is a major agricultural pest in many areas around the world. Ha128 homologues have been identified in all completely sequenced lepidopteran NPV's, but no homologue has been found in a granulovirus (GV) and it is thus considered as a lepidopteran NPV-specific gene. In the HearSNPV-C1 genome Ha128 is located between 120,252 and 121,052 bp and encodes a putative protein of 266 amino acid residues with a predicted molecular weight of 30.5 kDa. Ha128 transcripts in HearSNPV-infected HzAM1 cells could be detected from 24 to 120 h post-infection (p.i.) by Northern blot. The Ha128 protein was detected at 24 h p.i. and remained detectable until 120 h p.i. by western blot using an anti-GST-Ha128 antiserum. The expression of Ha128 was inhibited in the presence of Ara-C, an inhibitor of viral DNA synthesis. These results together indicated that Ha128 was a late gene. The product of Ha128 was found to have an Mr of about 31 kDa, in agreement with the predicted molecular weight. Immunoflorescence using anti-GST-Ha128 serum showed that Ha128 was located in cytoplasm. GST pull-down and co-immunoprecipitation showed that at least two potential host proteins interacted with Ha128. In conclusion, Ha128 is a late protein localized in the cytoplasm of infected cells that may interact with host proteins.
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Affiliation(s)
- S-H An
- Institute of Applied Entomology, Zhejiang University, Hangzhou, P.R. China
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Zappitelli S, D'Alatri L, Ciucci A, Raucci G, Faiella A, Gabrielli M, Parlani M, Bressan A, Maggi CA, Goso C, Rotondaro L. Expression and characterization of biologically active human Fas ligand produced in CHO cells. Mol Biotechnol 2003; 23:189-202. [PMID: 12665690 DOI: 10.1385/mb:23:3:189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We describe an expression system for high-yield production of recombinant soluble human FasL (rsh- FasL) in CHO cells. After one round of selection for gene amplification, cell lines producing rsh-FasL up to 60 microg/L x 10(6) cells in 24 h were obtained. Cell lines were grown in protein-free medium as suspension cultures. The protein secreted into growth medium was purified by immunoaffinity. The rsh-FasL thus obtained was further fractionated by gel filtration and a form of approx 140 kDa was isolated and characterized. Mass spectral analysis yielded a main peak of 28,321.15 Da, while, although to a lesser extent, dimeric and trimeric forms were also detected according to the described oligomerized state of native FasL. Our procedure permits consistent production of biologically active rsh-FasL as shown in tests on FasL-sensitive cells and in in vitro binding assays.
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Marchal I, Cerutti M, Mir AM, Juliant S, Devauchelle G, Cacan R, Verbert A. Expression of a membrane-bound form of Trypanosoma cruzi trans-sialidase in baculovirus-infected insect cells: a potential tool for sialylation of glycoproteins produced in the baculovirus-insect cells system. Glycobiology 2001; 11:593-603. [PMID: 11447139 DOI: 10.1093/glycob/11.7.593] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A chimeric protein containing the catalytic domain of Trypanosoma cruzi trans-sialidase, the transmembrane domain of the major envelope glycoprotein of the baculovirus (gp67), and the signal peptide of ecdysteroid glucosyltransferase of the baculovirus was expressed under the control of the very late promoter p10 in baculovirus-infected lepidopteran cells. The recombinant protein was found to be enzymatically active. Three days after infection, equal amounts of activity were found associated to the plasma membrane and in the infection medium, both forms having the same apparent molecular weight and being N-glycosylated. When exogenous galactosylated acceptors (lactose or asialo-alpha1-acid glycoprotein) were added in the culture medium of cells infected with the recombinant baculovirus in the presence of a sialylated donor, a sialylation could be observed. Therefore, we propose the use of trans-sialidase as a potential tool for sialylation of glycoconjugates in the baculovirus-insect cells system.
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Affiliation(s)
- I Marchal
- Laboratoire de glycobiologie structurale et fonctionnelle, Unité Mixte de Recherche du CNRS no. 8576, Université des Sciences et Technologies de Lille I, 59655 Villeneuve d'Ascq cedex, France
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Abstract
Gene therapy is now being studied for the treatment of a wide variety of acquired and inherited diseases. Viruses used as vectors for gene transfer include retroviruses, adenoviruses, vaccinia viruses, adeno-associated viruses, and herpesviruses. These vectors, developed in the laboratory and in animal studies, are now being introduced into the clinical arena Infection control practitioners will be involved invariably in reviewing the use of these agents in their clinics and hospitals. This review summarizes key aspects of the more common vectors and makes recommendations for infection control.
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Affiliation(s)
- M E Evans
- University of Kentucky Medical Center, T.H. Morgan School of Biological Sciences, University of Kentucky, Lexington 40536-0293, USA
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Pajot-Augy E, Bozon V, Remy JJ, Couture L, Salesse R. Critical relationship between glycosylation of recombinant lutropin receptor ectodomain and its secretion from baculovirus-infected insect cells. EUROPEAN JOURNAL OF BIOCHEMISTRY 1999; 260:635-48. [PMID: 10102991 DOI: 10.1046/j.1432-1327.1999.00241.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The lutropin receptor ectodomain overexpressed under the control of the powerful polyhedrin promoter in baculovirus-infected Sf9 insect cells, is mainly found in an inactive, intracellularly-aggregated form. It is secreted in an active form under the control of the P10 promoter, a somewhat weaker and earlier promoter, at the price of a lower production. The apparent molecular masses of the two species encoded by the same cDNA are 48 kDa and 60-68 kDa, respectively. The relationship between the extent and type of glycosylation and the extracellular targeting for the recombinant lutropin receptor ectodomains was investigated precisely with endoglycosidases, lectins of various specificities, and a glycosylation inhibitor, and tested with monoclonal and polyclonal antibodies. The results indicate that the strong polyhedrin promoter probably overwhelms the processing capacity of the ER in Sf9 cells, so that only a high-mannose precursor is expressed in large amounts. Only a minute amount of protein is secreted, which has been processed by Sf9 exoglycosidases/glycosyltransferases and bears complex/hybrid oligosaccharides. The weaker P10 promoter allows secretion of a mature and active receptor ectodomain, bearing complex glycosylation. An important O-linked glycosylation is also added post-translationally on this species. In particular, beta-galactose and sialic acid residues were specifically detected in the secreted species, evidence of the induction of the corresponding glycosyltransferases or of their genes. These results suggest that Sf9 cells should eventually be engineered with chaperones and glycosyltransferases in order to improve the production of demanding glycoproteins such as the porcine lutropin ectodomain, so as to open the way to resolution of the three-dimensional structures of these receptors.
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Affiliation(s)
- E Pajot-Augy
- Unité Récepteurs et Communication Cellulaire, Biologie Cellulaire et Moléculaire, INRA-Biotechnologies, Jouy-en-Josas, France.
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Affiliation(s)
- C G Tate
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
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Gallina A, Rossi F, Milanesi G, Rossi R, Montecucco A, Ciarrocchi G. Characterization of human DNA ligase I expressed in a baculovirus-insect cell system. Biochem J 1995; 312 ( Pt 2):593-7. [PMID: 8526875 PMCID: PMC1136303 DOI: 10.1042/bj3120593] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The baculovirus expression system was used to overexpress human DNA ligase I (hLig I). Approx. 2 mg of recombinant hLig I was produced per 10(8) Spodoptera frugiperda Sf9 insect cells infected with the recombinant baculovirus. The optimum time point for the production of biologically active recombinant hLig I was 48 h post-infection. Lig I activity was demonstrated by auto-adenylating, polynucleotide joining and DNA relaxation assays. The baculovirus system has the advantage over previously described methods for producing hLig I of generating large amounts of a full-length active protein.
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Affiliation(s)
- A Gallina
- Istituto di Genetica Biochimica ed Evoluzionistica, CNR, Pavia, Italy
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Li M, Delos SE, Montross L, Garcea RL. Polyomavirus VP1 phosphorylation: coexpression with the VP2 capsid protein modulates VP1 phosphorylation in Sf9 insect cells. Proc Natl Acad Sci U S A 1995; 92:5992-6. [PMID: 7597067 PMCID: PMC41628 DOI: 10.1073/pnas.92.13.5992] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The polyomavirus virion has an outer capsid comprised of 72 pentamers of the VP1 protein associated with the minor virion proteins, VP2 and VP3, and the viral minichromosome. To investigate the interaction between VP1 and VP2/VP3, we mapped VP1 phosphorylation sites and assayed VP1 recognition by anti-peptide antibodies after coexpression of VP1 with VP2 or VP3 by using recombinant baculovirus vectors. VP1, expressed either alone or with VP3, was phosphorylated on serine residues, which are not modified during polyomavirus infection of mouse cells. When VP1 was coexpressed with VP2, the nonphysiologic serine phosphorylation of VP1 was decreased, and a tryptic peptide containing Thr-63, a site modified during virus infection of mouse cells, was phosphorylated. An anti-peptide antibody directed against the VP1 BC loop domain containing Thr-63 recognized VP1 expressed alone but not VP1 coexpressed with VP2 or VP3. The change in phosphorylation resulting from coexpression of two structural proteins identifies the potential of the baculovirus system for studying protein-protein interactions and defines a functional role for the VP1-VP2 interaction.
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Affiliation(s)
- M Li
- Department of Pediatrics, University of Colorado School of Medicine, Denver 80262, USA
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[15] Assembly of recombinant retroviral gag precursors into pseudovirions in the baculovirus-insect cell expression system. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s1067-2389(06)80047-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Olkkonen VM, Dupree P, Simons K, Liljeström P, Garoff H. Expression of exogenous proteins in mammalian cells with the Semliki Forest virus vector. Methods Cell Biol 1994; 43 Pt A:43-53. [PMID: 7529866 DOI: 10.1016/s0091-679x(08)60597-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- V M Olkkonen
- European Molecular Biology Laboratory, Heidelberg, Germany
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Sommerfelt MA, Sorscher EJ. Use of fluorescence-activated cell sorting for rapid isolation of insect cells harboring recombinant baculovirus. Methods Cell Biol 1994; 42 Pt B:563-74. [PMID: 7877509 DOI: 10.1016/s0091-679x(08)61095-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- M A Sommerfelt
- National Centre for Research in Virology, University of Bergen, Bergen High Technology Centre, Norway
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