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Schloßhauer JL, Tholen L, Körner A, Kubick S, Chatzopoulou S, Hönow A, Zemella A. Promoting the production of challenging proteins via induced expression in CHO cells and modified cell-free lysates harboring T7 RNA polymerase and mutant eIF2α. Synth Syst Biotechnol 2024; 9:416-424. [PMID: 38601208 PMCID: PMC11004649 DOI: 10.1016/j.synbio.2024.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/12/2024] [Accepted: 03/16/2024] [Indexed: 04/12/2024] Open
Abstract
Chinese hamster ovary (CHO) cells are crucial in biopharmaceutical production due to their scalability and capacity for human-like post-translational modifications. However, toxic proteins and membrane proteins are often difficult-to-express in living cells. Alternatively, cell-free protein synthesis can be employed. This study explores innovative strategies for enhancing the production of challenging proteins through the modification of CHO cells by investigating both, cell-based and cell-free approaches. A major result in our study involves the integration of a mutant eIF2 translation initiation factor and T7 RNA polymerase into CHO cell lysates for cell-free protein synthesis. This resulted in elevated yields, while eliminating the necessity for exogenous additions during cell-free production, thereby substantially enhancing efficiency. Additionally, we explore the potential of the Rosa26 genomic site for the integration of T7 RNA polymerase and cell-based tetracycline-controlled protein expression. These findings provide promising advancements in bioproduction technologies, offering flexibility to switch between cell-free and cell-based protein production as needed.
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Affiliation(s)
- Jeffrey L. Schloßhauer
- Fraunhofer Project Group PZ-Syn of the Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
- Institute for Chemistry and Biochemistry, Laboratory of Protein Biochemistry, Freie Universität Berlin, Thielallee 63, 14195, Berlin, Germany
| | - Lena Tholen
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
| | - Alexander Körner
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
- Institute of Biotechnology, Technische Universität Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Stefan Kubick
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
- Faculty of Health Sciences, Joint Faculty of the Brandenburg University of Technology Cottbus –Senftenberg, The Brandenburg Medical School Theodor Fontane, University of Potsdam, Potsdam, Germany
- Institute for Chemistry and Biochemistry, Laboratory of Protein Biochemistry, Freie Universität Berlin, Thielallee 63, 14195, Berlin, Germany
| | - Sofia Chatzopoulou
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
| | - Anja Hönow
- New/era/mabs GmbH, August-Bebel-Str. 89, 14482, Potsdam, Germany
| | - Anne Zemella
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
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Bauer N, Oberist C, Poth M, Stingele J, Popp O, Ausländer S. Genomic barcoding for clonal diversity monitoring and control in cell-based complex antibody production. Sci Rep 2024; 14:14587. [PMID: 38918509 PMCID: PMC11199663 DOI: 10.1038/s41598-024-65323-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 06/19/2024] [Indexed: 06/27/2024] Open
Abstract
Engineered mammalian cells are key for biotechnology by enabling broad applications ranging from in vitro model systems to therapeutic biofactories. Engineered cell lines exist as a population containing sub-lineages of cell clones that exhibit substantial genetic and phenotypic heterogeneity. There is still a limited understanding of the source of this inter-clonal heterogeneity as well as its implications for biotechnological applications. Here, we developed a genomic barcoding strategy for a targeted integration (TI)-based CHO antibody producer cell line development process. This technology provided novel insights about clone diversity during stable cell line selection on pool level, enabled an imaging-independent monoclonality assessment after single cell cloning, and eventually improved hit-picking of antibody producer clones by monitoring of cellular lineages during the cell line development (CLD) process. Specifically, we observed that CHO producer pools generated by TI of two plasmids at a single genomic site displayed a low diversity (< 0.1% RMCE efficiency), which further depends on the expressed molecules, and underwent rapid population skewing towards dominant clones during routine cultivation. Clonal cell lines from one individual TI event demonstrated a significantly lower variance regarding production-relevant and phenotypic parameters as compared to cell lines from distinct TI events. This implies that the observed cellular diversity lies within pre-existing cell-intrinsic factors and that the majority of clonal variation did not develop during the CLD process, especially during single cell cloning. Using cellular barcodes as a proxy for cellular diversity, we improved our CLD screening workflow and enriched diversity of production-relevant parameters substantially. This work, by enabling clonal diversity monitoring and control, paves the way for an economically valuable and data-driven CLD process.
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Affiliation(s)
- Niels Bauer
- Large Molecule Research, Roche Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Penzberg, Germany
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377, Munich, Germany
| | - Christoph Oberist
- Large Molecule Research, Roche Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Penzberg, Germany
| | - Michaela Poth
- Large Molecule Research, Roche Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Penzberg, Germany
| | - Julian Stingele
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377, Munich, Germany
| | - Oliver Popp
- Large Molecule Research, Roche Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Penzberg, Germany
| | - Simon Ausländer
- Large Molecule Research, Roche Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Penzberg, Germany.
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3
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Improvement of Tol2 Transposon System by Modification of Tol2 Transposase. BIOTECHNOL BIOPROC E 2022. [DOI: 10.1007/s12257-022-0175-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Improvement of Sleeping Beauty Transposon System Enabling Efficient and Stable Protein Production. BIOTECHNOL BIOPROC E 2022. [DOI: 10.1007/s12257-021-0231-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Wei M, Mi CL, Jing CQ, Wang TY. Progress of Transposon Vector System for Production of Recombinant Therapeutic Proteins in Mammalian Cells. Front Bioeng Biotechnol 2022; 10:879222. [PMID: 35600890 PMCID: PMC9114503 DOI: 10.3389/fbioe.2022.879222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
In recent years, mammalian cells have become the primary host cells for the production of recombinant therapeutic proteins (RTPs). Despite that the expression of RTPs in mammalian cells can be improved by directly optimizing or engineering the expression vectors, it is still influenced by the low stability and efficiency of gene integration. Transposons are mobile genetic elements that can be inserted and cleaved within the genome and can change their inserting position. The transposon vector system can be applied to establish a stable pool of cells with high efficiency in RTPs production through facilitating the integration of gene of interest into transcriptionally active sites under screening pressure. Here, the structure and optimization of transposon vector system and its application in expressing RTPs at high level in mammalian cells are reviewed.
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Affiliation(s)
- Mian Wei
- School of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang, China
| | - Chun-Liu Mi
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang, China
| | - Chang-Qin Jing
- School of Life Science and Technology, Xinxiang Medical University, Xinxiang, China
- *Correspondence: Chang-Qin Jing, ; Tian-Yun Wang,
| | - Tian-Yun Wang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang, China
- *Correspondence: Chang-Qin Jing, ; Tian-Yun Wang,
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6
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Hwang SY, Lee YH, Kuk MU, Kim JW, Oh S, Park JT. Improvement of Tol2 Transposon System Enabling Efficient Protein Production in CHO Cells. BIOTECHNOL BIOPROC E 2021. [DOI: 10.1007/s12257-020-0310-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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van Heuvel Y, Berg K, Hirch T, Winn K, Modlich U, Stitz J. Establishment of a novel stable human suspension packaging cell line producing ecotropic retroviral MLV(PVC-211) vectors efficiently transducing murine hematopoietic stem and progenitor cells. J Virol Methods 2021; 297:114243. [PMID: 34314749 DOI: 10.1016/j.jviromet.2021.114243] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 06/30/2021] [Accepted: 07/15/2021] [Indexed: 12/29/2022]
Abstract
Retroviral vectors derived from murine leukemia virus (MLV) are amongst the most frequently utilized vectors in gene therapy approaches such as the genetic modification of hematopoietic cells. Currently, vector particles are mostly produced employing adherent viral packaging cell lines (VPCs) rendering the scale up of production laborious, and thus cost-intensive. Here, we describe the rapid establishment of a human suspension 293-F cell line derived ecotropic MLV VPC. Using transposon vector technology, a packaging and envelope expression cassette as well as a transfer vector facilitated the establishment of a stable VPC yielding high titers of up to 5.2 × 106 transducing units/mL (TU/mL). Vectors were concentrated using ultrafiltration devices and upon one freeze-thaw-cycle still routinely yielded titers of > 1 × 106 TU/mL. Formation of replication-competent retroviruses was not detected. However and as a first generation transfer vector was used in this proof-of-concept (POC) study, gag gene sequences were transduced into target cells within a range of 1-10 copies per 1000 genomes indicating the homologous recombination of packaging construct elements with the transfer vector. High yield VPC vector productivity was stable over a couple of months and unintended integration of the transposase gene was not observed. Ecotropic MLV vector particles were demonstrated to efficiently transduce primary murine hematopoietic stem and progenitor cells. This novel concept should foster the future establishment of suspension VPCs.
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Affiliation(s)
- Yasemin van Heuvel
- Research Group Pharmaceutical Biotechnology, Faculty of Applied Natural Sciences, TH Köln - University of Applied Sciences, Chempark Leverkusen E28, Kaiser-Wilhelm-Allee, 51368, Leverkusen, Germany; Institute of Technical Chemistry, Leibniz University Hannover, Callinstraße, 530167, Hannover, Germany
| | - Karen Berg
- Research Group Pharmaceutical Biotechnology, Faculty of Applied Natural Sciences, TH Köln - University of Applied Sciences, Chempark Leverkusen E28, Kaiser-Wilhelm-Allee, 51368, Leverkusen, Germany; Research Group Translational Hepatology and Stem Cell Biology, Cluster of Excellence REBIRTH, Department of Gastroenterology, Hepatology, and Endocrinology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Tanja Hirch
- Research Group for Gene Modification in Stem Cells, Paul-Ehrlich-Institute, Division of Veterinary Medicine, Paul-Ehrlich-Str. 51-59, 63225, Langen, Germany
| | - Kristina Winn
- Research Group Pharmaceutical Biotechnology, Faculty of Applied Natural Sciences, TH Köln - University of Applied Sciences, Chempark Leverkusen E28, Kaiser-Wilhelm-Allee, 51368, Leverkusen, Germany
| | - Ute Modlich
- Research Group for Gene Modification in Stem Cells, Paul-Ehrlich-Institute, Division of Veterinary Medicine, Paul-Ehrlich-Str. 51-59, 63225, Langen, Germany
| | - Jörn Stitz
- Research Group Pharmaceutical Biotechnology, Faculty of Applied Natural Sciences, TH Köln - University of Applied Sciences, Chempark Leverkusen E28, Kaiser-Wilhelm-Allee, 51368, Leverkusen, Germany.
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Kang M, Lee SH, Kwon M, Byun J, Kim D, Kim C, Koo S, Kwon SP, Moon S, Jung M, Hong J, Go S, Song SY, Choi JH, Hyeon T, Oh YK, Park HH, Kim BS. Nanocomplex-Mediated In Vivo Programming to Chimeric Antigen Receptor-M1 Macrophages for Cancer Therapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2103258. [PMID: 34510559 DOI: 10.1002/adma.202103258] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Chimeric antigen receptor-T (CAR-T) cell immunotherapy has shown impressive clinical outcomes for hematologic malignancies. However, its broader applications are challenged due to its complex ex vivo cell-manufacturing procedures and low therapeutic efficacy against solid tumors. The limited therapeutic effects are partially due to limited CAR-T cell infiltration to solid tumors and inactivation of CAR-T cells by the immunosuppressive tumor microenvironment. Here, a facile approach is presented to in vivo program macrophages, which can intrinsically penetrate solid tumors, into CAR-M1 macrophages displaying enhanced cancer-directed phagocytosis and anti-tumor activity. In vivo injected nanocomplexes of macrophage-targeting nanocarriers and CAR-interferon-γ-encoding plasmid DNA induce CAR-M1 macrophages that are capable of CAR-mediated cancer phagocytosis, anti-tumor immunomodulation, and inhibition of solid tumor growth. Together, this study describes an off-the-shelf CAR-macrophage therapy that is effective for solid tumors and avoids the complex and costly processes of ex vivo CAR-cell manufacturing.
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Affiliation(s)
- Mikyung Kang
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seong Ho Lee
- Department of Smart Health Science and Technology, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Miji Kwon
- Department of Smart Health Science and Technology, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Junho Byun
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dongyoon Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Cheesue Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sagang Koo
- Center for Nanoparticle Research, Institute of Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sung Pil Kwon
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sangjun Moon
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Mungyo Jung
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jihye Hong
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seokhyeong Go
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seuk Young Song
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jae Hyun Choi
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute of Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yu-Kyoung Oh
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hee Ho Park
- Department of Bioengineering, Hanyang University, Seoul, 04763, Republic of Korea
- Education and Research Group for Biopharmaceutical Innovation Leader, Hanyang University, Seoul, 04763, Republic of Korea
| | - Byung-Soo Kim
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
- Institute of Chemical Processes, Institute of Engineering Research, BioMAX, Seoul National University, Seoul, 08826, Republic of Korea
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9
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Applications of piggyBac Transposons for Genome Manipulation in Stem Cells. Stem Cells Int 2021; 2021:3829286. [PMID: 34567130 PMCID: PMC8460389 DOI: 10.1155/2021/3829286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 08/16/2021] [Indexed: 12/20/2022] Open
Abstract
Transposons are mobile genetic elements in the genome. The piggyBac (PB) transposon system is increasingly being used for stem cell research due to its high transposition efficiency and seamless excision capacity. Over the past few decades, forward genetic screens based on PB transposons have been successfully established to identify genes associated with drug resistance and stem cell-related characteristics. Moreover, PB transposon is regarded as a promising gene therapy vector and has been used in some clinically relevant stem cells. Here, we review the recent progress on the basic biology of PB, highlight its applications in current stem cell research, and discuss its advantages and challenges.
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Novel Coagulation Factor VIII Gene Therapy in a Mouse Model of Hemophilia A by Lipid-Coated Fe 3O 4 Nanoparticles. Biomedicines 2021; 9:biomedicines9091116. [PMID: 34572302 PMCID: PMC8464966 DOI: 10.3390/biomedicines9091116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/22/2021] [Accepted: 08/27/2021] [Indexed: 12/12/2022] Open
Abstract
Hemophilia A is a bleeding disease caused by loss of coagulation factor VIII (FVIII) function. Although prophylactic FVIII infusion prevents abnormal bleeding, disability and joint damage in hemophilia patients are common. The cost of treatment is among the highest for a single disease, and the adverse effects of repeated infusion are still an issue that has not been addressed. In this study, we established a nonviral gene therapy strategy to treat FVIII knockout (FVIII KO) mice. A novel gene therapy approach was developed using dipalmitoylphosphatidylcholine formulated with iron oxide (DPPC-Fe3O4) to carry the B-domain-deleted (BDD)-FVIII plasmid, which was delivered into the FVIII KO mice via tail vein injection. Here, a liver-specific albumin promoter-driven BDD-FVIII plasmid was constructed, and the binding ability of circular DNA was confirmed to be more stable than that of linear DNA when combined with DPPC-Fe3O4 nanoparticles. The FVIII KO mice that received the DPPC-Fe3O4 plasmid complex were assessed by staining the ferric ion of DPPC-Fe3O4 nanoparticles with Prussian blue in liver tissue. The bleeding of the FVIII KO mice was improved in a few weeks, as shown by assessing the activated partial thromboplastin time (aPTT). Furthermore, no liver toxicity, thromboses, deaths, or persistent changes after nonviral gene therapy were found, as shown by serum liver indices and histopathology. The results suggest that this novel gene therapy can successfully improve hemostasis disorder in FVIII KO mice and might be a promising approach to treating hemophilia A patients in clinical settings.
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Rodriguez-Polo I, Mißbach S, Petkov S, Mattern F, Maierhofer A, Grządzielewska I, Tereshchenko Y, Urrutia-Cabrera D, Haaf T, Dressel R, Bartels I, Behr R. A piggyBac-based platform for genome editing and clonal rhesus macaque iPSC line derivation. Sci Rep 2021; 11:15439. [PMID: 34326359 PMCID: PMC8322147 DOI: 10.1038/s41598-021-94419-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 07/05/2021] [Indexed: 02/07/2023] Open
Abstract
Non-human primates (NHPs) are, due to their close phylogenetic relationship to humans, excellent animal models to study clinically relevant mutations. However, the toolbox for the genetic modification of NHPs is less developed than those for other species like mice. Therefore, it is necessary to further develop and refine genome editing approaches in NHPs. NHP pluripotent stem cells (PSCs) share key molecular signatures with the early embryo, which is an important target for genomic modification. Therefore, PSCs are a valuable test system for the validation of embryonic genome editing approaches. In the present study, we made use of the versatility of the piggyBac transposon system for different purposes in the context of NHP stem cell technology and genome editing. These include (1) Robust reprogramming of rhesus macaque fibroblasts to induced pluripotent stem cells (iPSCs); (2) Culture of the iPSCs under feeder-free conditions even after removal of the transgene resulting in transgene-free iPSCs; (3) Development of a CRISPR/Cas-based work-flow to edit the genome of rhesus macaque PSCs with high efficiency; (4) Establishment of a novel protocol for the derivation of gene-edited monoclonal NHP-iPSC lines. These findings facilitate efficient testing of genome editing approaches in NHP-PSC before their in vivo application.
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Affiliation(s)
- Ignacio Rodriguez-Polo
- Research Platform Degenerative Diseases, German Primate Center-Leibniz Institute for Primate Research, Kellnerweg 4, 37077, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Partner site Göttingen, Göttingen, Germany
| | - Sophie Mißbach
- Research Platform Degenerative Diseases, German Primate Center-Leibniz Institute for Primate Research, Kellnerweg 4, 37077, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Partner site Göttingen, Göttingen, Germany
| | - Stoyan Petkov
- Research Platform Degenerative Diseases, German Primate Center-Leibniz Institute for Primate Research, Kellnerweg 4, 37077, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Partner site Göttingen, Göttingen, Germany
| | - Felix Mattern
- Institut für Humangenetik, Universität Würzburg, Biozentrum, Am Hubland, 97074, Würzburg, Germany
| | - Anna Maierhofer
- Institut für Humangenetik, Universität Würzburg, Biozentrum, Am Hubland, 97074, Würzburg, Germany
| | - Iga Grządzielewska
- Research Platform Degenerative Diseases, German Primate Center-Leibniz Institute for Primate Research, Kellnerweg 4, 37077, Göttingen, Germany
- Max Planck Molecular Biology Program (M.Sc./Ph.D.), Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
| | - Yuliia Tereshchenko
- Research Platform Degenerative Diseases, German Primate Center-Leibniz Institute for Primate Research, Kellnerweg 4, 37077, Göttingen, Germany
- Max Planck Molecular Biology Program (M.Sc./Ph.D.), Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
| | - Daniel Urrutia-Cabrera
- Research Platform Degenerative Diseases, German Primate Center-Leibniz Institute for Primate Research, Kellnerweg 4, 37077, Göttingen, Germany
- Cellular Reprogramming Unit, Center for Eye Research Australia, 75 Commercial Road, Melbourne, 3004, Australia
| | - Thomas Haaf
- Institut für Humangenetik, Universität Würzburg, Biozentrum, Am Hubland, 97074, Würzburg, Germany
| | - Ralf Dressel
- German Center for Cardiovascular Research (DZHK), Partner site Göttingen, Göttingen, Germany
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Humboldtalle 34, 37073, Göttingen, Germany
| | - Iris Bartels
- Institute of Human Genetics, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - Rüdiger Behr
- Research Platform Degenerative Diseases, German Primate Center-Leibniz Institute for Primate Research, Kellnerweg 4, 37077, Göttingen, Germany.
- German Center for Cardiovascular Research (DZHK), Partner site Göttingen, Göttingen, Germany.
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12
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Helou L, Beauclair L, Dardente H, Piégu B, Tsakou-Ngouafo L, Lecomte T, Kentsis A, Pontarotti P, Bigot Y. The piggyBac-derived protein 5 (PGBD5) transposes both the closely and the distantly related piggyBac-like elements Tcr-pble and Ifp2. J Mol Biol 2021; 433:166839. [PMID: 33539889 PMCID: PMC8404143 DOI: 10.1016/j.jmb.2021.166839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 12/21/2020] [Accepted: 01/14/2021] [Indexed: 12/16/2022]
Abstract
The vertebrate piggyBac derived transposase 5 (PGBD5) encodes a domesticated transposase, which is active and able to transpose its distantly related piggyBac-like element (pble), Ifp2. This raised the question whether PGBD5 would be more effective at mobilizing a phylogenetically closely related pble element. We aimed to identify the pble most closely related to the pgbd5 gene. We updated the landscape of vertebrate pgbd genes to develop efficient filters and identify the most closely related pble to each of these genes. We found that Tcr-pble is phylogenetically the closest pble to the pgbd5 gene. Furthermore, we evaluated the capacity of two murine and human PGBD5 isoforms, Mm523 and Hs524, to transpose both Tcr-pble and Ifp2 elements. We found that both pbles could be transposed by Mm523 with similar efficiency. However, integrations of both pbles occurred through both proper transposition and improper PGBD5-dependent recombination. This suggested that the ability of PGBD5 to bind both pbles may not be based on the primary sequence of element ends, but may involve recognition of inner DNA motifs, possibly related to palindromic repeats. In agreement with this hypothesis, we identified internal palindromic repeats near the end of 24 pble sequences, which display distinct sequences.
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Affiliation(s)
- Laura Helou
- UMR INRAE 0085, CNRS 7247, Physiologie de la Reproduction et des Comportements, Centre INRA Val de Loire, 37380 Nouzilly, France
| | - Linda Beauclair
- UMR INRAE 0085, CNRS 7247, Physiologie de la Reproduction et des Comportements, Centre INRA Val de Loire, 37380 Nouzilly, France
| | - Hugues Dardente
- UMR INRAE 0085, CNRS 7247, Physiologie de la Reproduction et des Comportements, Centre INRA Val de Loire, 37380 Nouzilly, France
| | - Benoît Piégu
- UMR INRAE 0085, CNRS 7247, Physiologie de la Reproduction et des Comportements, Centre INRA Val de Loire, 37380 Nouzilly, France
| | - Louis Tsakou-Ngouafo
- UMR MEPHI D-258, I, IRD, Aix Marseille Université, 19-21 Boulevard Jean Moulin, 13005 Marseille, France; CNRS SNC 5039, 13005 Marseille, France
| | | | - Alex Kentsis
- Molecular Pharmacology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Weill Cornell Medical College, Cornell University, New York, NY, USA; Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Pierre Pontarotti
- UMR INRAE 0085, CNRS 7247, Physiologie de la Reproduction et des Comportements, Centre INRA Val de Loire, 37380 Nouzilly, France; CNRS SNC 5039, 13005 Marseille, France
| | - Yves Bigot
- UMR INRAE 0085, CNRS 7247, Physiologie de la Reproduction et des Comportements, Centre INRA Val de Loire, 37380 Nouzilly, France.
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13
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Tschorn N, Berg K, Stitz J. Transposon vector-mediated stable gene transfer for the accelerated establishment of recombinant mammalian cell pools allowing for high-yield production of biologics. Biotechnol Lett 2020; 42:1103-1112. [PMID: 32323079 PMCID: PMC7275939 DOI: 10.1007/s10529-020-02889-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 04/13/2020] [Indexed: 12/11/2022]
Abstract
Stable recombinant mammalian cells are of growing importance in pharmaceutical biotechnology production scenarios for biologics such as monoclonal antibodies, growth and blood factors, cytokines and subunit vaccines. However, the establishment of recombinant producer cells using classical stable transfection of plasmid DNA is hampered by low stable gene transfer efficiencies. Consequently, subsequent selection of transgenic cells and the screening of clonal cell populations are time- and thus cost-intensive. To overcome these limitations, expression cassettes were embedded into transposon-derived donor vectors. Upon the co-transfection with transposase-encoding constructs, elevated vector copy numbers stably integrated into the genomes of the host cells are readily achieved facilitating under stringent selection pressure the establishment of cell pools characterized by sustained and high-yield recombinant protein production. Here, we discuss some aspects of transposon vector technologies, which render these vectors promising candidates for their further utilization in the production of biologics.
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Affiliation(s)
- Natalie Tschorn
- Research Group Pharmaceutical Biotechnology, TH Köln - University of Applied Sciences, Chempark Leverkusen E28, Kaiser-Wilhelm-Allee, 51368, Leverkusen, Germany.,Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany
| | - Karen Berg
- Research Group Pharmaceutical Biotechnology, TH Köln - University of Applied Sciences, Chempark Leverkusen E28, Kaiser-Wilhelm-Allee, 51368, Leverkusen, Germany.,Research Group Translational Hepatology and Stem Cell Biology, Cluster of Excellence REBIRTH, Department of Gastroenterology, Hepatology, and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Jörn Stitz
- Research Group Pharmaceutical Biotechnology, TH Köln - University of Applied Sciences, Chempark Leverkusen E28, Kaiser-Wilhelm-Allee, 51368, Leverkusen, Germany.
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14
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piggyBac-Based Non-Viral In Vivo Gene Delivery Useful for Production of Genetically Modified Animals and Organs. Pharmaceutics 2020; 12:pharmaceutics12030277. [PMID: 32204422 PMCID: PMC7151002 DOI: 10.3390/pharmaceutics12030277] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/17/2020] [Accepted: 03/18/2020] [Indexed: 11/17/2022] Open
Abstract
In vivo gene delivery involves direct injection of nucleic acids (NAs) into tissues, organs, or tail-veins. It has been recognized as a useful tool for evaluating the function of a gene of interest (GOI), creating models for human disease and basic research targeting gene therapy. Cargo frequently used for gene delivery are largely divided into viral and non-viral vectors. Viral vectors have strong infectious activity and do not require the use of instruments or reagents helpful for gene delivery but bear immunological and tumorigenic problems. In contrast, non-viral vectors strictly require instruments (i.e., electroporator) or reagents (i.e., liposomes) for enhanced uptake of NAs by cells and are often accompanied by weak transfection activity, with less immunological and tumorigenic problems. Chromosomal integration of GOI-bearing transgenes would be ideal for achieving long-term expression of GOI. piggyBac (PB), one of three transposons (PB, Sleeping Beauty (SB), and Tol2) found thus far, has been used for efficient transfection of GOI in various mammalian cells in vitro and in vivo. In this review, we outline recent achievements of PB-based production of genetically modified animals and organs and will provide some experimental concepts using this system.
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15
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Hew BE, Sato R, Mauro D, Stoytchev I, Owens JB. RNA-guided piggyBac transposition in human cells. Synth Biol (Oxf) 2019; 4:ysz018. [PMID: 31355344 PMCID: PMC6642342 DOI: 10.1093/synbio/ysz018] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/11/2019] [Accepted: 06/26/2019] [Indexed: 01/12/2023] Open
Abstract
Safer and more efficient methods for directing therapeutic genes to specific sequences could increase the repertoire of treatable conditions. Many current approaches act passively, first initiating a double-stranded break, then relying on host repair to uptake donor DNA. Alternatively, we delivered an actively integrating transposase to the target sequence to initiate gene insertion. We fused the hyperactive piggyBac transposase to the highly specific, catalytically dead SpCas9-HF1 (dCas9) and designed guide RNAs (gRNAs) to the CCR5 safe harbor sequence. We introduced mutations to the native DNA-binding domain of piggyBac to reduce non-specific binding of the transposase and cause the fusion protein to favor binding by dCas9. This strategy enabled us, for the first time, to direct transposition to the genome using RNA. We showed that increasing the number of gRNAs improved targeting efficiency. Interestingly, over half of the recovered insertions were found at a single TTAA hotspot. We also found that the fusion increased the error rate at the genome-transposon junction. We isolated clonal cell lines containing a single insertion at CCR5 and demonstrated long-term expression from this locus. These vectors expand the utility of the piggyBac system for applications in targeted gene addition for biomedical research and gene therapy.
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Affiliation(s)
- Brian E Hew
- Department of Anatomy, Biochemistry, and Physiology, Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Ryuei Sato
- Department of Anatomy, Biochemistry, and Physiology, Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Damiano Mauro
- Department of Anatomy, Biochemistry, and Physiology, Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Ilko Stoytchev
- Department of Anatomy, Biochemistry, and Physiology, Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Jesse B Owens
- Department of Anatomy, Biochemistry, and Physiology, Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, USA
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16
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In Vivo Piggybac-Based Gene Delivery towards Murine Pancreatic Parenchyma Confers Sustained Expression of Gene of Interest. Int J Mol Sci 2019; 20:ijms20133116. [PMID: 31247905 PMCID: PMC6651600 DOI: 10.3390/ijms20133116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 01/08/2023] Open
Abstract
The pancreas is a glandular organ that functions in the digestive system and endocrine system of vertebrates. The most common disorders involving the pancreas are diabetes, pancreatitis, and pancreatic cancer. In vivo gene delivery targeting the pancreas is important for preventing or curing such diseases and for exploring the biological function of genes involved in the pathogenesis of these diseases. Our previous experiments demonstrated that adult murine pancreatic cells can be efficiently transfected by exogenous plasmid DNA following intraparenchymal injection and subsequent in vivo electroporation using tweezer-type electrodes. Unfortunately, the induced gene expression was transient. Transposon-based gene delivery, such as that facilitated by piggyBac (PB), is known to confer stable integration of a gene of interest (GOI) into host chromosomes, resulting in sustained expression of the GOI. In this study, we investigated the use of the PB transposon system to achieve stable gene expression when transferred into murine pancreatic cells using the above-mentioned technique. Expression of the GOI (coding for fluorescent protein) continued for at least 1.5 months post-gene delivery. Splinkerette-PCR-based analysis revealed the presence of the consensus sequence TTAA at the junctional portion between host chromosomes and the transgenes; however, this was not observed in all samples. This plasmid-based PB transposon system enables constitutive expression of the GOI in pancreas for potential therapeutic and biological applications.
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17
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Yagi M, Kabata M, Ukai T, Ohta S, Tanaka A, Shimada Y, Sugimoto M, Araki K, Okita K, Woltjen K, Hochedlinger K, Yamamoto T, Yamada Y. De Novo DNA Methylation at Imprinted Loci during Reprogramming into Naive and Primed Pluripotency. Stem Cell Reports 2019; 12:1113-1128. [PMID: 31056481 PMCID: PMC6524733 DOI: 10.1016/j.stemcr.2019.04.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 04/05/2019] [Accepted: 04/08/2019] [Indexed: 12/16/2022] Open
Abstract
CpG islands (CGIs) including those at imprinting control regions (ICRs) are protected from de novo methylation in somatic cells. However, many cancers often exhibit CGI hypermethylation, implying that the machinery is impaired in cancer cells. Here, we conducted a comprehensive analysis of CGI methylation during somatic cell reprogramming. Although most CGIs remain hypomethylated, a small subset of CGIs, particularly at several ICRs, was often de novo methylated in reprogrammed pluripotent stem cells (PSCs). Such de novo ICR methylation was linked with the silencing of reprogramming factors, which occurs at a late stage of reprogramming. The ICR-preferred CGI hypermethylation was similarly observed in human PSCs. Mechanistically, ablation of Dnmt3a prevented PSCs from de novo ICR methylation. Notably, the ICR-preferred CGI hypermethylation was observed in pediatric cancers, while adult cancers exhibit genome-wide CGI hypermethylation. These results may have important implications in the pathogenesis of pediatric cancers and the application of PSCs. Several ICRs are de novo methylated in reprogrammed PSCs De novo ICR methylation in iPSCs is linked with transgene silencing Depletion of Dnmt3a prevents reprogrammed PSCs from de novo ICR methylation Pediatric cancers exhibit reprogrammed PSC-like aberration in CGI methylation
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Affiliation(s)
- Masaki Yagi
- Division of Stem Cell Pathology, Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan; Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Mio Kabata
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Tomoyo Ukai
- Division of Stem Cell Pathology, Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan; Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Sho Ohta
- Division of Stem Cell Pathology, Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
| | - Akito Tanaka
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Yui Shimada
- Division of Stem Cell Pathology, Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan; Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Michihiko Sugimoto
- Institute of Resource Development and Analysis, Kumamoto University, Kumamoto 860-0811, Japan
| | - Kimi Araki
- Institute of Resource Development and Analysis, Kumamoto University, Kumamoto 860-0811, Japan
| | - Keisuke Okita
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan
| | - Knut Woltjen
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan; Hakubi Center for Advanced Research, Kyoto University, Kyoto 606-8501, Japan
| | - Konrad Hochedlinger
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; Cancer Center, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Takuya Yamamoto
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan; AMED-CREST, AMED 1-7-1 Otemachi, Chiyodaku, Tokyo 100-0004, Japan; Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan; Medical-risk Avoidance Based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto 606-8507, Japan.
| | - Yasuhiro Yamada
- Division of Stem Cell Pathology, Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan; Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan; AMED-CREST, AMED 1-7-1 Otemachi, Chiyodaku, Tokyo 100-0004, Japan.
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Tipanee J, VandenDriessche T, Chuah MK. Transposons: Moving Forward from Preclinical Studies to Clinical Trials. Hum Gene Ther 2017; 28:1087-1104. [DOI: 10.1089/hum.2017.128] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Jaitip Tipanee
- Department of Gene Therapy and Regenerative Medicine, Free University of Brussels (VUB), Brussels, Belgium
| | - Thierry VandenDriessche
- Department of Gene Therapy and Regenerative Medicine, Free University of Brussels (VUB), Brussels, Belgium
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Marinee K. Chuah
- Department of Gene Therapy and Regenerative Medicine, Free University of Brussels (VUB), Brussels, Belgium
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
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