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Nishizawa-Yokoi A, Toki S. Precise genetic engineering with piggyBac transposon in plants. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2023; 40:255-262. [PMID: 38434112 PMCID: PMC10905368 DOI: 10.5511/plantbiotechnology.23.0525a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 05/25/2023] [Indexed: 03/05/2024]
Abstract
Transposons are mobile genetic elements that can move to a different position within a genome or between genomes. They have long been used as a tool for genetic engineering, including transgenesis, insertional mutagenesis, and marker excision, in a variety of organisms. The piggyBac transposon derived from the cabbage looper moth is one of the most promising transposon tools ever identified because piggyBac has the advantage that it can transpose without leaving a footprint at the excised site. Applying the piggyBac transposon to precise genome editing in plants, we have demonstrated efficient and precise piggyBac transposon excision from a transgene locus integrated into the rice genome. Furthermore, introduction of only desired point mutations into the target gene can be achieved by a combination of precise gene modification via homologous recombination-mediated gene targeting with subsequent marker excision from target loci using piggyBac transposition in rice. In addition, we have designed a piggyBac-mediated transgenesis system for the temporary expression of sequence-specific nucleases to eliminate the transgene from the host genome without leaving unnecessary sequences after the successful induction of targeted mutagenesis via sequence-specific nucleases for use in vegetatively propagated plants. In this review, we summarize our previous works and the future prospects of genetic engineering with piggyBac transposon.
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Affiliation(s)
- Ayako Nishizawa-Yokoi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai
| | - Seiichi Toki
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 3-1-3 Kannondai
- Graduate School of Nanobioscience, Yokohama City University, 22-2 Seto, Yokohama
- Faculty of Agriculture, Ryukoku University, 1-5 Yokotani, Seta Oe-cho, Otsu, Shiga 520-2194, Japan
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Zhang C, Zuo Q, Gao X, Hu C, Zhou S, Chen C, Zou Y, Zhao J, Zhang Y, Li B. H3K4me2 Promotes the Activation of lncCPSET1 by Jun in the Chicken PGC Formation. Animals (Basel) 2021; 11:ani11061572. [PMID: 34072197 PMCID: PMC8227976 DOI: 10.3390/ani11061572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/12/2021] [Accepted: 05/25/2021] [Indexed: 11/16/2022] Open
Abstract
Primordial germ cells are the ancestors of female and male cells. Current research has shown that long non-coding RNA (lncRNA) and Histone methylation are the pivotal epigenetic factors in the PGC formation. However, there are few studies on the regulatory mechanism of lncRNA in the formation of PGC. Here, we define the lncRNA highly expressed in chicken PGC, lncCPSET1 (chicken-PGC-specifically-expressed transcript 1) This study found that compared with the interference of lncCPSET1/histone methylase Mll2 alone, the PGC formation was severely inhibited with the interference of lncCPSET1 and histone methylase Mll2 jointly in vivo and in vitro. Studies on the transcription level of lncCPSET1 found that H3K4me2 and transcription factor Jun have a positive effect on the activation of lncCPSET1; while DNA hypomethylation inhibits the expression of lncCPSET1. In terms of mechanism, compared with DNA methylation, H3K4me2 dominates lncCPSET1 activation. H3K4me2 can be enriched in the lncCPSET1 promoter, change its chromosome conformation, recruit the transcription factor Jun, and activate the expression of lncCPSET1. Taken together, we confirmed the model that H3K4me2 rather than DNA hypomethylation mediates Jun to regulate lncCPSET1 transcription, which broadens the study of lncCPSET1 pre-transcriptional mechanism.
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Affiliation(s)
- Chen Zhang
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Qisheng Zuo
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Xiaomin Gao
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Cai Hu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Shujian Zhou
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Chen Chen
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Yichen Zou
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Juanjuan Zhao
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Yani Zhang
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
| | - Bichun Li
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (C.Z.); (Q.Z.); (X.G.); (C.H.); (S.Z.); (C.C.); (Y.Z.); (J.Z.); (Y.Z.)
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212000, China
- Correspondence:
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Chu D, Nguyen A, Smith SS, Vavrušová Z, Schneider RA. Stable integration of an optimized inducible promoter system enables spatiotemporal control of gene expression throughout avian development. Biol Open 2020; 9:bio055343. [PMID: 32917762 PMCID: PMC7561481 DOI: 10.1242/bio.055343] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 08/27/2020] [Indexed: 01/18/2023] Open
Abstract
Precisely altering gene expression is critical for understanding molecular processes of embryogenesis. Although some tools exist for transgene misexpression in developing chick embryos, we have refined and advanced them by simplifying and optimizing constructs for spatiotemporal control. To maintain expression over the entire course of embryonic development we use an enhanced piggyBac transposon system that efficiently integrates sequences into the host genome. We also incorporate a DNA targeting sequence to direct plasmid translocation into the nucleus and a D4Z4 insulator sequence to prevent epigenetic silencing. We designed these constructs to minimize their size and maximize cellular uptake, and to simplify usage by placing all of the integrating sequences on a single plasmid. Following electroporation of stage HH8.5 embryos, our tetracycline-inducible promoter construct produces robust transgene expression in the presence of doxycycline at any point during embryonic development in ovo or in culture. Moreover, expression levels can be modulated by titrating doxycycline concentrations and spatial control can be achieved using beads or gels. Thus, we have generated a novel, sensitive, tunable, and stable inducible-promoter system for high-resolution gene manipulation in vivo.
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Affiliation(s)
- Daniel Chu
- Department of Orthopaedic Surgery, University of California at San Francisco, 513 Parnassus Avenue, S-1164, San Francisco, CA 94143-0514, USA
| | - An Nguyen
- Department of Orthopaedic Surgery, University of California at San Francisco, 513 Parnassus Avenue, S-1164, San Francisco, CA 94143-0514, USA
| | - Spenser S Smith
- Department of Orthopaedic Surgery, University of California at San Francisco, 513 Parnassus Avenue, S-1164, San Francisco, CA 94143-0514, USA
| | - Zuzana Vavrušová
- Department of Orthopaedic Surgery, University of California at San Francisco, 513 Parnassus Avenue, S-1164, San Francisco, CA 94143-0514, USA
| | - Richard A Schneider
- Department of Orthopaedic Surgery, University of California at San Francisco, 513 Parnassus Avenue, S-1164, San Francisco, CA 94143-0514, USA
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Sid H, Schusser B. Applications of Gene Editing in Chickens: A New Era Is on the Horizon. Front Genet 2018; 9:456. [PMID: 30356667 PMCID: PMC6189320 DOI: 10.3389/fgene.2018.00456] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 09/18/2018] [Indexed: 01/15/2023] Open
Abstract
The chicken represents a valuable model for research in the area of immunology, infectious diseases as well as developmental biology. Although it was the first livestock species to have its genome sequenced, there was no reverse genetic technology available to help understanding specific gene functions. Recently, homologous recombination was used to knockout the chicken immunoglobulin genes. Subsequent studies using immunoglobulin knockout birds helped to understand different aspects related to B cell development and antibody production. Furthermore, the latest advances in the field of genome editing including the CRISPR/Cas9 system allowed the introduction of site specific gene modifications in various animal species. Thus, it may provide a powerful tool for the generation of genetically modified chickens carrying resistance for certain pathogens. This was previously demonstrated by targeting the Trp38 region which was shown to be effective in the control of avian leukosis virus in chicken DF-1 cells. Herein we review the current and future prospects of gene editing and how it possibly contributes to the development of resistant chickens against infectious diseases.
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Affiliation(s)
| | - Benjamin Schusser
- Department of Animal Sciences, Reproductive Biotechnology, School of Life Sciences Weihenstephan, Technical University Munich, Freising, Germany
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Abstract
The piggyBac transposon was originally isolated from the cabbage looper moth, Trichoplusia ni, in the 1980s. Despite its early discovery and dissimilarity to the other DNA transposon families, the piggyBac transposon was not recognized as a member of a large transposon superfamily for a long time. Initially, the piggyBac transposon was thought to be a rare transposon. This view, however, has now been completely revised as a number of fully sequenced genomes have revealed the presence of piggyBac-like repetitive elements. The isolation of active copies of the piggyBac-like elements from several distinct species further supported this revision. This includes the first isolation of an active mammalian DNA transposon identified in the bat genome. To date, the piggyBac transposon has been deeply characterized and it represents a number of unique characteristics. In general, all members of the piggyBac superfamily use TTAA as their integration target sites. In addition, the piggyBac transposon shows precise excision, i.e., restoring the sequence to its preintegration state, and can transpose in a variety of organisms such as yeasts, malaria parasites, insects, mammals, and even in plants. Biochemical analysis of the chemical steps of transposition revealed that piggyBac does not require DNA synthesis during the actual transposition event. The broad host range has attracted researchers from many different fields, and the piggyBac transposon is currently the most widely used transposon system for genetic manipulations.
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Zhao S, Jiang E, Chen S, Gu Y, Shangguan AJ, Lv T, Luo L, Yu Z. PiggyBac transposon vectors: the tools of the human gene encoding. Transl Lung Cancer Res 2016; 5:120-5. [PMID: 26958506 DOI: 10.3978/j.issn.2218-6751.2016.01.05] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A transposon is a DNA segment, which is able to change its relative position within the entire genome of a cell. The piggyBac (PB) transposon is a movable genetic element that efficiently transposes between vectors and chromosomes through a "cut-and-paste" mechanism. During transposition, the PB transposase recognizes transposon-specific inverted terminal repeats (ITRs) sequences located on both ends of the transposon vector and eight efficiently moves the contents from its original positions and efficiently integrates them into TTAA chromosomal sites. PB has drawn much attention because of its transposition efficiency, safety and stability. Due to its priorities, PB can be used as a new genetic vehicle, a new tool for oncogene screening and a new method for gene therapy. PB has created a new outlook for human gene encoding.
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Affiliation(s)
- Shuang Zhao
- 1 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, China ; 2 Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing 210002, China ; 3 Shanghai Medical College of Fudan University, Shanghai 20032, China ; 4 Weinberg College of Arts and Sciences at Northwestern University, Evanston, Illinois 60204, USA ; 5 Department of Respiratory Medicine, 6 Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing 210002, China
| | - Enze Jiang
- 1 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, China ; 2 Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing 210002, China ; 3 Shanghai Medical College of Fudan University, Shanghai 20032, China ; 4 Weinberg College of Arts and Sciences at Northwestern University, Evanston, Illinois 60204, USA ; 5 Department of Respiratory Medicine, 6 Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing 210002, China
| | - Shuangshuang Chen
- 1 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, China ; 2 Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing 210002, China ; 3 Shanghai Medical College of Fudan University, Shanghai 20032, China ; 4 Weinberg College of Arts and Sciences at Northwestern University, Evanston, Illinois 60204, USA ; 5 Department of Respiratory Medicine, 6 Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing 210002, China
| | - Yuan Gu
- 1 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, China ; 2 Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing 210002, China ; 3 Shanghai Medical College of Fudan University, Shanghai 20032, China ; 4 Weinberg College of Arts and Sciences at Northwestern University, Evanston, Illinois 60204, USA ; 5 Department of Respiratory Medicine, 6 Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing 210002, China
| | - Anna Junjie Shangguan
- 1 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, China ; 2 Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing 210002, China ; 3 Shanghai Medical College of Fudan University, Shanghai 20032, China ; 4 Weinberg College of Arts and Sciences at Northwestern University, Evanston, Illinois 60204, USA ; 5 Department of Respiratory Medicine, 6 Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing 210002, China
| | - Tangfeng Lv
- 1 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, China ; 2 Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing 210002, China ; 3 Shanghai Medical College of Fudan University, Shanghai 20032, China ; 4 Weinberg College of Arts and Sciences at Northwestern University, Evanston, Illinois 60204, USA ; 5 Department of Respiratory Medicine, 6 Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing 210002, China
| | - Liguo Luo
- 1 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, China ; 2 Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing 210002, China ; 3 Shanghai Medical College of Fudan University, Shanghai 20032, China ; 4 Weinberg College of Arts and Sciences at Northwestern University, Evanston, Illinois 60204, USA ; 5 Department of Respiratory Medicine, 6 Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing 210002, China
| | - Zhenghong Yu
- 1 Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, China ; 2 Department of Medical Oncology, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing 210002, China ; 3 Shanghai Medical College of Fudan University, Shanghai 20032, China ; 4 Weinberg College of Arts and Sciences at Northwestern University, Evanston, Illinois 60204, USA ; 5 Department of Respiratory Medicine, 6 Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing 210002, China
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Bourgeois A, Esteves de Lima J, Charvet B, Kawakami K, Stricker S, Duprez D. Stable and bicistronic expression of two genes in somite- and lateral plate-derived tissues to study chick limb development. BMC DEVELOPMENTAL BIOLOGY 2015; 15:39. [PMID: 26518454 PMCID: PMC4628273 DOI: 10.1186/s12861-015-0088-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 10/22/2015] [Indexed: 12/02/2022]
Abstract
Background Components of the limb musculoskeletal system have distinct mesoderm origins. Limb skeletal muscles originate from somites, while the skeleton and attachments (tendons and connective tissues) derive from limb lateral plate. Despite distinct mesoderm origins, the development of muscle, skeleton and attachments is highly coordinated both spatially and temporally to ensure complete function of the musculoskeletal system. A system to study molecular interactions between somitic-derived tissues (muscles) and lateral-plate-derived tissues (skeletal components and attachments) during limb development is missing. Results We designed a gene delivery system in chick embryos with the ultimate aim to study the interactions between the components of the musculoskeletal system during limb development. We combined the Tol2 genomic integration system with the viral T2A system and developed new vectors that lead to stable and bicistronic expression of two proteins at comparable levels in chick cells. Combined with limb somite and lateral plate electroporation techniques, two fluorescent reporter proteins were co-expressed in stoichiometric proportion in the muscle lineage (somitic-derived) or in skeleton and their attachments (lateral-plate-derived). In addition, we designed three vectors with different promoters to target muscle cells at different steps of the differentiation process. Conclusion Limb somite electroporation technique using vectors containing these different promoters allowed us to target all myogenic cells, myoblasts or differentiated muscle cells. These stable and promoter-specific vectors lead to bicistronic expression either in somitic-derived myogenic cells or lateral plate-derived cells, depending on the electroporation sites and open new avenues to study the interactions between myogenic cells and tendon or connective tissue cells during limb development.
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Affiliation(s)
- Adeline Bourgeois
- CNRS UMR 7622, IBPS-Developmental Biology Laboratory, F-75005, Paris, France. .,Sorbonne Universités, UPMC Univ Paris 06, IBPS-Developmental Biology Laboratory, F-75005, Paris, France. .,Inserm U1156, F-75005, Paris, France.
| | - Joana Esteves de Lima
- CNRS UMR 7622, IBPS-Developmental Biology Laboratory, F-75005, Paris, France. .,Sorbonne Universités, UPMC Univ Paris 06, IBPS-Developmental Biology Laboratory, F-75005, Paris, France. .,Inserm U1156, F-75005, Paris, France.
| | - Benjamin Charvet
- CNRS UMR 7622, IBPS-Developmental Biology Laboratory, F-75005, Paris, France. .,Sorbonne Universités, UPMC Univ Paris 06, IBPS-Developmental Biology Laboratory, F-75005, Paris, France.
| | - Koichi Kawakami
- Division of Molecular and Developmental Biology, National Institute of Genetics, and Department of Genetics, SOKENDAI (The Graduate University for Advanced Studies), Mishima, Shizuoka, Japan.
| | - Sigmar Stricker
- Institue for Chemistry and Biochemistry, Freie Universitaet Berlin, 14195, Berlin, Germany.
| | - Delphine Duprez
- CNRS UMR 7622, IBPS-Developmental Biology Laboratory, F-75005, Paris, France. .,Sorbonne Universités, UPMC Univ Paris 06, IBPS-Developmental Biology Laboratory, F-75005, Paris, France. .,Inserm U1156, F-75005, Paris, France.
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Hong JB, Chou FJ, Ku AT, Fan HH, Lee TL, Huang YH, Yang TL, Su IC, Yu IS, Lin SW, Chien CL, Ho HN, Chen YT. A nucleolus-predominant piggyBac transposase, NP-mPB, mediates elevated transposition efficiency in mammalian cells. PLoS One 2014; 9:e89396. [PMID: 24586748 PMCID: PMC3933532 DOI: 10.1371/journal.pone.0089396] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Accepted: 01/20/2014] [Indexed: 11/25/2022] Open
Abstract
PiggyBac is a prevalent transposon system used to deliver transgenes and functionally explore the mammalian untouched genomic territory. The important features of piggyBac transposon are the relatively low insertion site preference and the ability of seamless removal from genome, which allow its potential uses in functional genomics and regenerative medicine. Efforts to increase its transposition efficiency in mammals were made through engineering the corresponding transposase (PBase) codon usage to enhance its expression level and through screening for mutant PBase variants with increased enzyme activity. To improve the safety for its potential use in regenerative medicine applications, site-specific transposition was achieved by using engineered zinc finger- and Gal4-fused PBases. An excision-prone PBase variant has also been successfully developed. Here we describe the construction of a nucleolus-predominant PBase, NP-mPB, by adding a nucleolus-predominant (NP) signal peptide from HIV-1 TAT protein to a mammalian codon-optimized PBase (mPB). Although there is a predominant fraction of the NP-mPB-tGFP fusion proteins concentrated in the nucleoli, an insertion site preference toward nucleolar organizer regions is not detected. Instead a 3–4 fold increase in piggyBac transposition efficiency is reproducibly observed in mouse and human cells.
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Affiliation(s)
- Jin-Bon Hong
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Dermatology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Fu-Ju Chou
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Amy T. Ku
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hsiang-Hsuan Fan
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Tung-Lung Lee
- Department of Dermatology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Yung-Hsin Huang
- Department of Dermatology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Tsung-Lin Yang
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
- Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan
| | - I-Chang Su
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - I-Shing Yu
- Transgenic Mouse Model Core Facility of the National Research Program for Genomic Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Laboratory Animal Center, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shu-Wha Lin
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chung-Liang Chien
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
- Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan
- Stem Cell Core Laboratory, National Taiwan University Center of Genomic Medicine, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Anatomy and Cell Biology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hong-Nerng Ho
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
- Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan
- Stem Cell Core Laboratory, National Taiwan University Center of Genomic Medicine, National Taiwan University, Taipei, Taiwan
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - You-Tzung Chen
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
- Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Stem Cell Core Laboratory, National Taiwan University Center of Genomic Medicine, National Taiwan University, Taipei, Taiwan
- Genome and Systems Biology Program, National Taiwan University, Taipei, Taiwan
- * E-mail:
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Nakamura H, Funahashi J. Electroporation: past, present and future. Dev Growth Differ 2012; 55:15-9. [PMID: 23157363 DOI: 10.1111/dgd.12012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Revised: 09/20/2012] [Accepted: 09/25/2012] [Indexed: 01/13/2023]
Abstract
Gene transfer by electroporation has become an indispensable method for the study of developmental biology. The technique is applied not only in chick embryos but also in mice and other organisms. Here, a short history and perspectives of electroporation for gene transfer in vertebrates are described.
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Affiliation(s)
- Harukazu Nakamura
- Department of Molecular Neurobiology, Graduate School of Life Sciences and Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi 4-1, Aoba-ku, Sendai, Japan.
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