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Machida K, Tanaka R, Miki S, Noseda S, Yuasa-Sunagawa M, Imataka H. High-throughput screening for a SARS-CoV-2 frameshifting inhibitor using a cell-free protein synthesis system. Biotechniques 2024; 76:161-168. [PMID: 38293767 DOI: 10.2144/btn-2023-0102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024] Open
Abstract
Programmed-1 ribosomal frameshifting (-1 PRF) is a translational mechanism adopted by some viruses, including SARS-CoV-2. To find a compound that can inhibit -1 PRF in SARS-CoV-2, we set up a high-throughput screening system using a HeLa cell extract-derived cell-free protein synthesis (CFPS) system. A total of 32,000 compounds were individually incubated with the CFPS system programmed with a -1 PRF-EGFP template. Several compounds were observed to decrease the -1 PRF-driven fluorescence, and one of them had some suppressive effect on -1 PRF of a SARS-CoV-2 genome sequence in transfected cells. Thus the CFPS system can be used as a tool for a high-throughput screening of chemicals.
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Affiliation(s)
- Kodai Machida
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, 671-2201, Japan
| | - Rin Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, 671-2201, Japan
| | - Seraya Miki
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, 671-2201, Japan
| | - Shotaro Noseda
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, 671-2201, Japan
| | - Mayumi Yuasa-Sunagawa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, 671-2201, Japan
| | - Hiroaki Imataka
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, 671-2201, Japan
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Zheng Q, Zhang X, Yang H, Xie J, Xie Y, Chen J, Yu C, Zhong C. Internal Ribosome Entry Site Dramatically Reduces Transgene Expression in Hematopoietic Cells in a Position-Dependent Manner. Viruses 2019; 11:v11100920. [PMID: 31597367 PMCID: PMC6833044 DOI: 10.3390/v11100920] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 09/21/2019] [Accepted: 10/06/2019] [Indexed: 12/20/2022] Open
Abstract
Bicistronic transgene expression mediated by internal ribosome entry site (IRES) elements has been widely used. It co-expresses heterologous transgene products from a message RNA driven by a single promoter. Hematologic gene delivery is a promising treatment for both inherited and acquired diseases. A combined strategy was recently documented for potential genome editing in hematopoietic cells. A transduction efficiency exceeding ~90% can be achieved by capsid-optimized recombinant adeno-associated virus serotype 6 (rAAV6) vectors. In this study, to deliver an encephalomyocarditis virus (EMCV) IRES-containing rAAV6 genome into hematopoietic cells, we observed that EMCV IRES almost completely shut down the transgene expression during the process of mRNA–protein transition. In addition, position-dependent behavior was observed, in which only the EMCV IRES element located between a promoter and the transgenes had an inhibitory effect. Although further studies are warranted to evaluate the involvement of cellular translation machinery, our results propose the use of specific IRES elements or an alternative strategy, such as the 2A system, to achieve bicistronic transgene expression in hematopoietic cells.
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Affiliation(s)
- Qingyun Zheng
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200438, China.
| | - Xueyan Zhang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200438, China.
- Division of Cellular and Molecular Therapy, Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL 32610, USA.
| | - Hua Yang
- Division of Cellular and Molecular Therapy, Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL 32610, USA.
- Department of Radiology, Central South University, Changsha, Hunan 410013, China.
| | - Jinyan Xie
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200438, China.
| | - Yilin Xie
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200438, China.
| | - Jinzhong Chen
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200438, China.
- Yeda Research Institute of Gene and Cell Therapy, Taizhou, Zhejiang 318000, China.
| | - Chenghui Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200438, China.
- Division of Cellular and Molecular Therapy, Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL 32610, USA.
- Yeda Research Institute of Gene and Cell Therapy, Taizhou, Zhejiang 318000, China.
| | - Chen Zhong
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200438, China.
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Nogimori T, Nishiura K, Kawashima S, Nagai T, Oishi Y, Hosoda N, Imataka H, Kitamura Y, Kitade Y, Hoshino SI. Dom34 mediates targeting of exogenous RNA in the antiviral OAS/RNase L pathway. Nucleic Acids Res 2019; 47:432-449. [PMID: 30395302 PMCID: PMC6326797 DOI: 10.1093/nar/gky1087] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/19/2018] [Indexed: 11/21/2022] Open
Abstract
The 2′-5′-oligoadenylate synthetase (OAS)/RNase L pathway is an innate immune system that protects hosts against pathogenic viruses and bacteria through cleavage of exogenous single-stranded RNA; however, this system's selective targeting mechanism remains unclear. Here, we identified an mRNA quality control factor Dom34 as a novel restriction factor for a positive-sense single-stranded RNA virus. Downregulation of Dom34 and RNase L increases viral replication, as well as half-life of the viral RNA. Dom34 directly binds RNase L to form a surveillance complex to recognize and eliminate the exogenous RNA in a manner dependent on translation. Interestingly, the feature detected by the surveillance complex is not the specific sequence of the viral RNA but the ‘exogenous nature’ of the RNA. We propose the following model for the selective targeting of exogenous RNA; OAS3 activated by the exogenous RNA releases 2′-5′-oligoadenylates (2–5A), which in turn converts latent RNase L to an active dimer. This accelerates formation of the Dom34-RNase L surveillance complex, and its selective localization to the ribosome on the exogenous RNA, thereby promoting degradation of the RNA. Our findings reveal that the selective targeting of exogenous RNA in antiviral defense occurs via a mechanism similar to that in the degradation of aberrant transcripts in RNA quality control.
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Affiliation(s)
- Takuto Nogimori
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Kyutatsu Nishiura
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Sho Kawashima
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Takahiro Nagai
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Yuka Oishi
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Nao Hosoda
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
| | - Hiroaki Imataka
- Department of Materials Science and Chemistry and Molecular Nanotechnology Research Center, Graduate School of Engineering, University of Hyogo, Himeji 671-2201, Japan
| | - Yoshiaki Kitamura
- Department of Biomolecular Science, Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yukio Kitade
- Department of Biomolecular Science, Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Shin-Ichi Hoshino
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
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4
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Progress in programming spatiotemporal patterns and machine-assembly in cell-free protein expression systems. Curr Opin Chem Biol 2017. [DOI: 10.1016/j.cbpa.2017.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Lewin JJ, Choi EJ, Ling G. Pharmacy on demand: New technologies to enable miniaturized and mobile drug manufacturing. Am J Health Syst Pharm 2016; 73:45-54. [DOI: 10.2146/ajhp150639] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- John J. Lewin
- Johns Hopkins Hospital and Johns Hopkins University School of Medicine, Baltimore, MD
| | | | - Geoffrey Ling
- Biological Technologies Office, Defense Advanced Research Projects Agency, Arlington, VA
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Zemella A, Thoring L, Hoffmeister C, Kubick S. Cell-Free Protein Synthesis: Pros and Cons of Prokaryotic and Eukaryotic Systems. Chembiochem 2015; 16:2420-31. [PMID: 26478227 PMCID: PMC4676933 DOI: 10.1002/cbic.201500340] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Indexed: 01/07/2023]
Abstract
From its start as a small-scale in vitro system to study fundamental translation processes, cell-free protein synthesis quickly rose to become a potent platform for the high-yield production of proteins. In contrast to classical in vivo protein expression, cell-free systems do not need time-consuming cloning steps, and the open nature provides easy manipulation of reaction conditions as well as high-throughput potential. Especially for the synthesis of difficult to express proteins, such as toxic and transmembrane proteins, cell-free systems are of enormous interest. The modification of the genetic code to incorporate non-canonical amino acids into the target protein in particular provides enormous potential in biotechnology and pharmaceutical research and is in the focus of many cell-free projects. Many sophisticated cell-free systems for manifold applications have been established. This review describes the recent advances in cell-free protein synthesis and details the expanding applications in this field.
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Affiliation(s)
- Anne Zemella
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Branch Bioanalytics and Bioprocesses Potsdam-Golm (IZI-BB), Am Mühlenberg 13, 14476, Potsdam, Germany
| | - Lena Thoring
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Branch Bioanalytics and Bioprocesses Potsdam-Golm (IZI-BB), Am Mühlenberg 13, 14476, Potsdam, Germany
| | - Christian Hoffmeister
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Branch Bioanalytics and Bioprocesses Potsdam-Golm (IZI-BB), Am Mühlenberg 13, 14476, Potsdam, Germany
| | - Stefan Kubick
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Branch Bioanalytics and Bioprocesses Potsdam-Golm (IZI-BB), Am Mühlenberg 13, 14476, Potsdam, Germany.
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7
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Zapf T, Zafiu C, Zaba C, Tan CWD, Hunziker W, Sinner EK. Nanoscopic leg irons: harvesting of polymer-stabilized membrane proteins with antibody-functionalized silica nanoparticles. Biomater Sci 2015. [PMID: 26215897 DOI: 10.1039/c5bm00133a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silica-based nanoparticles (SiNPs) are presented to harvest complex membrane proteins, which have been embedded into unilammelar polymersomes via in vitro membrane assisted protein synthesis (iMAP). Size-optimized SiNPs have been surface-modified with polymer-targeting antibodies, which are employed to harvest the protein-containing polymersomes. The polymersomes mimic the cellular membrane. They are chemically defined and preserve their structural-functional integrity as virtually any membrane protein species can be synthesized into such architecture via the ribosomal context of a cellular lysate. The SiNPs resemble 'heavy leg irons' catching the polymersomes in order to enable gravity-based generic purification and concentration of such proteopolymersomes from the crude mixture of cellular lysates.
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Affiliation(s)
- Thomas Zapf
- Department for Nanobiotechnology, Institute of Synthetic Bioarchitectures, University of Natural Resources and Life Science, Muthgasse 11/2, 1190 Vienna, Austria.
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Chu J, Li JG, Joshi YB, Giannopoulos PF, Hoffman NE, Madesh M, Praticò D. Gamma secretase-activating protein is a substrate for caspase-3: implications for Alzheimer's disease. Biol Psychiatry 2015; 77:720-8. [PMID: 25052851 PMCID: PMC4268092 DOI: 10.1016/j.biopsych.2014.06.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 05/29/2014] [Accepted: 06/01/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND A major feature of Alzheimer's disease (AD) is the accumulation of amyloid-beta (Aβ), whose formation is regulated by the gamma-secretase complex and its activating protein (also known as GSAP). Because GSAP interacts with gamma-secretase without affecting the cleavage of Notch, it is an ideal target for a viable anti-Aβ therapy. However, despite much interest in this protein, the mechanisms involved in its neurobiology are unknown. METHODS Postmortem brain tissue samples from AD patients, transgenic mouse models of AD, and neuronal cells were used to investigate the molecular mechanism involved in GSAP formation and subsequent amyloidogenesis. RESULTS We identified a caspase-3 processing domain in the GSAP sequence and provide experimental evidence that this caspase is essential for GSAP activation and biogenesis of Aβ peptides. Furthermore, we demonstrated that caspase-3-dependent GSAP formation occurs in brains of individuals with AD and two different mouse models of AD and that the process is biologically relevant because its pharmacological blockade reduces Aβ pathology in vivo. CONCLUSIONS Our data, by identifying caspase-3 as the endogenous modulator of GSAP and Aβ production, establish caspase-3 as a novel, attractive and viable Aβ-lowering therapeutic target for AD.
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Affiliation(s)
| | | | | | | | | | | | - Domenico Praticò
- Department of Pharmacology, Center for Translational Medicine, Temple University, Philadelphia, Pennsylvania.
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Machida K, Mikami S, Masutani M, Mishima K, Kobayashi T, Imataka H. A translation system reconstituted with human factors proves that processing of encephalomyocarditis virus proteins 2A and 2B occurs in the elongation phase of translation without eukaryotic release factors. J Biol Chem 2014; 289:31960-31971. [PMID: 25258322 PMCID: PMC4231674 DOI: 10.1074/jbc.m114.593343] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The genomic RNA of encephalomyocarditis virus (EMCV) encodes a single polyprotein, and the primary scission of the polyprotein occurs between nonstructural proteins 2A and 2B by an unknown mechanism. To gain insight into the mechanism of 2A-2B processing, we first translated the 2A-2B region in vitro with eukaryotic and prokaryotic translation systems. The 2A-2B processing occurred only in the eukaryotic systems, not in the prokaryotic systems, and the unprocessed 2A-2B protein synthesized by a prokaryotic system remained uncleaved when incubated with a eukaryotic cell extract. These results suggest that 2A-2B processing is a eukaryote-specific, co-translational event. To define the translation factors required for 2A-2B processing, we constituted a protein synthesis system with eukaryotic elongation factors 1 and 2, eukaryotic release factors 1 and 3 (eRF1 and eRF3), aminoacyl-tRNA synthetases, tRNAs, ribosome subunits, and a plasmid template that included the hepatitis C virus internal ribosome entry site. We successfully reproduced 2A-2B processing in the reconstituted system even without eRFs. Our results indicate that this unusual event occurs in the elongation phase of translation.
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Affiliation(s)
- Kodai Machida
- Department of Materials Science and Chemistry and University of Hyogo, Himeji 671-2201, Japan; Molecular Nanotechnology Research Center, Graduate School of Engineering, University of Hyogo, Himeji 671-2201, Japan and
| | - Satoshi Mikami
- RIKEN Systems and Structural Biology Center, Yokohama 230-0045, Japan
| | - Mamiko Masutani
- Department of Materials Science and Chemistry and University of Hyogo, Himeji 671-2201, Japan
| | - Kurumi Mishima
- Department of Materials Science and Chemistry and University of Hyogo, Himeji 671-2201, Japan
| | - Tominari Kobayashi
- Department of Materials Science and Chemistry and University of Hyogo, Himeji 671-2201, Japan
| | - Hiroaki Imataka
- Department of Materials Science and Chemistry and University of Hyogo, Himeji 671-2201, Japan; Molecular Nanotechnology Research Center, Graduate School of Engineering, University of Hyogo, Himeji 671-2201, Japan and.
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Guillemer S, Persillon C, Masson JM, Ravot G. Cell-free protein-based enzyme discovery and protein-ligand interaction study. Methods Mol Biol 2014; 1118:131-47. [PMID: 24395413 DOI: 10.1007/978-1-62703-782-2_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Cell-free expression-based screening is sometimes more suitable than cell-based assays for enzyme discovery. The advantage of cell-free systems for expression of toxic, poorly expressed, or insoluble proteins has already been well documented. Cell-free methods can advantageously replace cell-based ones when screening has to be performed on cell lysates prepared from harvested cells, for instance, when dealing with protein-ligand interactions particularly when the latter is hydrophobic. From our experience, cell-free extracts efficient in both transcription and translation can be prepared from potentially any microorganism. Here we present a general method for preparation of cell-free extracts from prokaryotic and eukaryotic cells, selection of the best systems, and optimized conditions for specific protein expression. The method allows to select proteins for their ability to bind a selected target, to identify the inhibitors of such binding, or to identify novel enzymatic activities.
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Kobayashi T, Machida K, Imataka H. Human cell extract-derived cell-free systems for virus synthesis. Methods Mol Biol 2014; 1118:149-56. [PMID: 24395414 DOI: 10.1007/978-1-62703-782-2_9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cell-free synthesis of an infectious virus is an ideal tool for elucidating the mechanism of viral replication and for development of antiviral drugs. In this chapter, the synthesis of Encephalomyocarditis virus (EMCV) from RNA and DNA in a HeLa cell extract-derived in vitro protein expression system is described. When a synthetic EMCV RNA with a hammerhead ribozyme sequence at its 5'-end is incubated with a HeLa cell extract using a dialysis system, EMCV particles are progressively synthesized. For EMCV synthesis from DNA, a plasmid harboring the full-length cDNA of EMCV with the T7 promoter/terminator unit is incubated in the HeLa cell extract supplemented with T7 RNA polymerase.
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Affiliation(s)
- Tominari Kobayashi
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, Himeji, Japan
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12
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Brödel AK, Sonnabend A, Roberts LO, Stech M, Wüstenhagen DA, Kubick S. IRES-mediated translation of membrane proteins and glycoproteins in eukaryotic cell-free systems. PLoS One 2013; 8:e82234. [PMID: 24376523 PMCID: PMC3869664 DOI: 10.1371/journal.pone.0082234] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 10/22/2013] [Indexed: 02/04/2023] Open
Abstract
Internal ribosome entry site (IRES) elements found in the 5′ untranslated region of mRNAs enable translation initiation in a cap-independent manner, thereby representing an alternative to cap-dependent translation in cell-free protein expression systems. However, IRES function is largely species-dependent so their utility in cell-free systems from different species is rather limited. A promising approach to overcome these limitations would be the use of IRESs that are able to recruit components of the translation initiation apparatus from diverse origins. Here, we present a solution to this technical problem and describe the ability of a number of viral IRESs to direct efficient protein expression in different eukaryotic cell-free expression systems. The IRES from the intergenic region (IGR) of the Cricket paralysis virus (CrPV) genome was shown to function efficiently in four different cell-free systems based on lysates derived from cultured Sf21, CHO and K562 cells as well as wheat germ. Our results suggest that the CrPV IGR IRES-based expression vector is universally applicable for a broad range of eukaryotic cell lysates. Sf21, CHO and K562 cell-free expression systems are particularly promising platforms for the production of glycoproteins and membrane proteins since they contain endogenous microsomes that facilitate the incorporation of membrane-spanning proteins and the formation of post-translational modifications. We demonstrate the use of the CrPV IGR IRES-based expression vector for the enhanced synthesis of various target proteins including the glycoprotein erythropoietin and the membrane proteins heparin-binding EGF-like growth factor receptor as well as epidermal growth factor receptor in the above mentioned eukaryotic cell-free systems. CrPV IGR IRES-mediated translation will facilitate the development of novel eukaryotic cell-free expression platforms as well as the high-yield synthesis of desired proteins in already established systems.
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Affiliation(s)
- Andreas K. Brödel
- Fraunhofer Institute for Biomedical Engineering (IBMT) Branch Potsdam-Golm, Potsdam, Germany
| | - Andrei Sonnabend
- Fraunhofer Institute for Biomedical Engineering (IBMT) Branch Potsdam-Golm, Potsdam, Germany
| | - Lisa O. Roberts
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Marlitt Stech
- Fraunhofer Institute for Biomedical Engineering (IBMT) Branch Potsdam-Golm, Potsdam, Germany
| | - Doreen A. Wüstenhagen
- Fraunhofer Institute for Biomedical Engineering (IBMT) Branch Potsdam-Golm, Potsdam, Germany
| | - Stefan Kubick
- Fraunhofer Institute for Biomedical Engineering (IBMT) Branch Potsdam-Golm, Potsdam, Germany
- * E-mail:
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Brödel AK, Sonnabend A, Kubick S. Cell‐free protein expression based on extracts from CHO cells. Biotechnol Bioeng 2013; 111:25-36. [DOI: 10.1002/bit.25013] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 07/08/2013] [Accepted: 07/15/2013] [Indexed: 02/05/2023]
Affiliation(s)
- Andreas K. Brödel
- Fraunhofer Institute for Biomedical Engineering (IBMT)Branch Potsdam‐GolmAm Mühlenberg 1314476PotsdamGermany
| | - Andrei Sonnabend
- Fraunhofer Institute for Biomedical Engineering (IBMT)Branch Potsdam‐GolmAm Mühlenberg 1314476PotsdamGermany
| | - Stefan Kubick
- Fraunhofer Institute for Biomedical Engineering (IBMT)Branch Potsdam‐GolmAm Mühlenberg 1314476PotsdamGermany
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14
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Purification and visualization of encephalomyocarditisvirus synthesized by an in vitro protein expression system derived from mammalian cell extract. Biotechnol Lett 2012; 35:309-14. [DOI: 10.1007/s10529-012-1086-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 10/31/2012] [Indexed: 10/27/2022]
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15
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Kobayashi T, Nakamura Y, Mikami S, Masutani M, Machida K, Imataka H. Synthesis of encephalomyocarditis virus in a cell-free system: from DNA to RNA virus in one tube. Biotechnol Lett 2011; 34:67-73. [DOI: 10.1007/s10529-011-0744-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Accepted: 09/16/2011] [Indexed: 11/29/2022]
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Kobayashi T, Machida K, Mikami S, Masutani M, Imataka H. Cell-free RNA replication systems based on a human cell extracts-derived in vitro translation system with the encephalomyocarditisvirus RNA. J Biochem 2011; 150:423-30. [DOI: 10.1093/jb/mvr072] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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17
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Mikami S, Kobayashi T, Imataka H. Cell-free protein synthesis systems with extracts from cultured human cells. Methods Mol Biol 2010; 607:43-52. [PMID: 20204847 DOI: 10.1007/978-1-60327-331-2_5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cell-free protein synthesis systems have been established with extracts from cultured human cells, HeLa, and hybridoma cells. The former cell line is used to prepare extracts for robust translation, whereas the extract from the latter is primarily employed for expression of glycoproteins. Productivity of both systems can be enhanced by addition of K3L and GADD34, factors that diminish phosphorylation of eIF2alpha. The coupled transcription/translation system is also available as a convenient tool, particularly for the production of large recombinant proteins.
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Affiliation(s)
- Satoshi Mikami
- RIKEN Systems and Structural Biology Center, Yokohama, Japan
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18
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A human cell-derived in vitro coupled transcription/translation system optimized for production of recombinant proteins. Protein Expr Purif 2008; 62:190-8. [DOI: 10.1016/j.pep.2008.09.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 09/01/2008] [Accepted: 09/04/2008] [Indexed: 11/21/2022]
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