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Fujinami K, Waheed N, Laich Y, Yang P, Fujinami-Yokokawa Y, Higgins JJ, Lu JT, Curtiss D, Clary C, Michaelides M. Stargardt macular dystrophy and therapeutic approaches. Br J Ophthalmol 2024; 108:495-505. [PMID: 37940365 PMCID: PMC10958310 DOI: 10.1136/bjo-2022-323071] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 10/06/2023] [Indexed: 11/10/2023]
Abstract
Stargardt macular dystrophy (Stargardt disease; STGD1; OMIM 248200) is the most prevalent inherited macular dystrophy. STGD1 is an autosomal recessive disorder caused by multiple pathogenic sequence variants in the large ABCA4 gene (OMIM 601691). Major advances in understanding both the clinical and molecular features, as well as the underlying pathophysiology, have culminated in many completed, ongoing and planned human clinical trials of novel therapies.The aims of this concise review are to describe (1) the detailed phenotypic and genotypic characteristics of the disease, multimodal imaging findings, natural history of the disease, and pathogenesis, (2) the multiple avenues of research and therapeutic intervention, including pharmacological, cellular therapies and diverse types of genetic therapies that have either been investigated or are under investigation and (3) the exciting novel therapeutic approaches on the translational horizon that aim to treat STGD1 by replacing the entire 6.8 kb ABCA4 open reading frame.
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Affiliation(s)
- Kaoru Fujinami
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Meguro-ku, Tokyo, Japan
- Institute of Ophthalmology, University College London, London, UK
- Moorfields Eye Hospital NHS Foundation Trust, London, UK
| | - Nadia Waheed
- Department of Ophthalmology, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Yannik Laich
- Moorfields Eye Hospital NHS Foundation Trust, London, UK
- Eye Center, Medical Center, University of Freiburg Faculty of Medicine, Freiburg, Germany
| | - Paul Yang
- Oregon Health and Science University Casey Eye Institute, Portland, Oregon, USA
| | - Yu Fujinami-Yokokawa
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Meguro-ku, Tokyo, Japan
- Institute of Ophthalmology, University College London, London, UK
- Department of Health Policy and Management, Keio University School of Medicine Graduate School of Medicine, Shinjuku-ku, Tokyo, Japan
| | | | - Jonathan T Lu
- SalioGen Therapeutics Inc, Lexington, Massachusetts, USA
| | - Darin Curtiss
- Applied Genetic Technologies Corporation, Alachua, Florida, USA
| | - Cathryn Clary
- SalioGen Therapeutics Inc, Lexington, Massachusetts, USA
| | - Michel Michaelides
- Institute of Ophthalmology, University College London, London, UK
- Moorfields Eye Hospital NHS Foundation Trust, London, UK
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2
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Marie C, Scherman D. Antibiotic-Free Gene Vectors: A 25-Year Journey to Clinical Trials. Genes (Basel) 2024; 15:261. [PMID: 38540320 PMCID: PMC10970329 DOI: 10.3390/genes15030261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/07/2024] [Accepted: 02/15/2024] [Indexed: 06/15/2024] Open
Abstract
Until very recently, the major use, for gene therapy, specifically of linear or circular DNA, such as plasmids, was as ancillary products for viral vectors' production or as a genetic template for mRNA production. Thanks to targeted and more efficient physical or chemical delivery techniques and to the refinement of their structure, non-viral plasmid DNA are now under intensive consideration as pharmaceutical drugs. Plasmids traditionally carry an antibiotic resistance gene for providing the selection pressure necessary for maintenance in a bacterial host. Nearly a dozen different antibiotic-free gene vectors have now been developed and are currently assessed in preclinical assays and phase I/II clinical trials. Their reduced size leads to increased transfection efficiency and prolonged transgene expression. In addition, associating non-viral gene vectors and DNA transposons, which mediate transgene integration into the host genome, circumvents plasmid dilution in dividing eukaryotic cells which generate a loss of the therapeutic gene. Combining these novel molecular tools allowed a significantly higher yield of genetically engineered T and Natural Killer cells for adoptive immunotherapies due to a reduced cytotoxicity and increased transposition rate. This review describes the main progresses accomplished for safer, more efficient and cost-effective gene and cell therapies using non-viral approaches and antibiotic-free gene vectors.
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Affiliation(s)
- Corinne Marie
- Université Paris Cité, CNRS, Inserm, UTCBS, 75006 Paris, France;
- Chimie ParisTech, Université PSL, 75005 Paris, France
| | - Daniel Scherman
- Université Paris Cité, CNRS, Inserm, UTCBS, 75006 Paris, France;
- Fondation Maladies Rares, 75014 Paris, France
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3
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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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4
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Hua WK, Hsu JC, Chen YC, Chang PS, Wen KLK, Wang PN, Yang WC, Shen CN, Yu YS, Chen YC, Cheng IC, Wu SCY. Quantum pBac: An effective, high-capacity piggyBac-based gene integration vector system for unlocking gene therapy potential. FASEB J 2023; 37:e23108. [PMID: 37534940 DOI: 10.1096/fj.202201654r] [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: 10/13/2022] [Revised: 06/02/2023] [Accepted: 07/12/2023] [Indexed: 08/04/2023]
Abstract
Recent advances in gene therapy have brought novel treatment options for cancer. However, the full potential of this approach has yet to be unlocked due to the limited payload capacity of commonly utilized viral vectors. Virus-free DNA transposons, including piggyBac, have the potential to obviate these shortcomings. In this study, we improved a previously modified piggyBac system with superior transposition efficiency. We demonstrated that the internal domain sequences (IDS) within the 3' terminal repeat domain of hyperactive piggyBac (hyPB) donor vector contain dominant enhancer elements. Plasmid-free donor vector devoid of IDS was used in conjunction with a helper plasmid expressing Quantum PBase™ v2 to generate an optimal piggyBac system, Quantum pBac™ (qPB), for use in T cells. qPB outperformed hyPB in CD20/CD19 CAR-T production in terms of performance as well as yield of the CAR-T cells produced. Furthermore, qPB also produced CAR-T cells with lower donor-associated variabilities compared to lentiviral vector. Importantly, qPB yielded mainly CD8+ CAR-TSCM cells, and the qPB-produced CAR-T cells effectively eliminated CD20/CD19-expressing tumor cells both in vitro and in vivo. Our findings confirm qPB as a promising virus-free vector system with an enhanced payload capacity to incorporate multiple genes. This highly efficient and potentially safe system will be expected to further advance gene therapy applications.
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Affiliation(s)
- Wei-Kai Hua
- GenomeFrontier Therapeutics, Inc, New Taipei City, Taiwan ROC
| | - Jeff C Hsu
- GenomeFrontier Therapeutics, Inc, New Taipei City, Taiwan ROC
| | - Yi-Chun Chen
- GenomeFrontier Therapeutics, Inc, New Taipei City, Taiwan ROC
| | - Peter S Chang
- GenomeFrontier Therapeutics, Inc, New Taipei City, Taiwan ROC
| | | | - Po-Nan Wang
- Division of Hematology, Chang Gung Medical Foundation, Taipei City, Taiwan ROC
| | - Wei-Cheng Yang
- Biomedical Translation Research Center, Academia Sinica, Taipei City, Taiwan ROC
| | - Chia-Ning Shen
- Biomedical Translation Research Center, Academia Sinica, Taipei City, Taiwan ROC
- Genomics Research Center, Academia Sinica, Taipei City, Taiwan ROC
| | - Yi-Shan Yu
- GenomeFrontier Therapeutics, Inc, New Taipei City, Taiwan ROC
| | - Ying-Chun Chen
- GenomeFrontier Therapeutics, Inc, New Taipei City, Taiwan ROC
| | - I-Cheng Cheng
- GenomeFrontier Therapeutics, Inc, New Taipei City, Taiwan ROC
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5
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Characterizing piggyBat-a transposase for genetic modification of T cells. Mol Ther Methods Clin Dev 2022; 25:250-263. [PMID: 35474955 PMCID: PMC9018555 DOI: 10.1016/j.omtm.2022.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 03/17/2022] [Indexed: 11/21/2022]
Abstract
Chimeric antigen receptor (CAR) T cells targeting CD19 have demonstrated remarkable efficacy in the treatment of B cell malignancies. Current CAR T cell manufacturing protocols are complex and costly due to their reliance on viral vectors. Non-viral systems of genetic modification, such as with transposase and transposon systems, offer a potential streamlined alternative for CAR T cell manufacture and are currently being evaluated in clinical trials. In this study, we utilized the previously described transposase from the little brown bat, designated piggyBat, for production of CD19-specific CAR T cells. PiggyBat demonstrates efficient CAR transgene delivery, with a relatively low variability in integration copy number across a range of manufacturing conditions as well as a similar integration site profile to super-piggyBac transposon and viral vectors. PiggyBat-generated CAR T cells demonstrate CD19-specific cytotoxic efficacy in vitro and in vivo. These data demonstrate that alternative, naturally occurring DNA transposons can be efficiently re-tooled to be exploited in real-world applications.
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6
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Wang Z, Zhao Q, Li X, Yin Z, Chen S, Wu S, Yang N, Hou Z. MYOD1 inhibits avian adipocyte differentiation via miRNA-206/KLF4 axis. J Anim Sci Biotechnol 2021; 12:55. [PMID: 33952351 PMCID: PMC8101123 DOI: 10.1186/s40104-021-00579-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 03/01/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND A considerable number of muscle development-related genes were differentially expressed in the early stage of avian adipocyte differentiation. However, the functions of them in adipocyte differentiation remain largely known. In this study, the myoblast determination protein 1 (MYOD1) was selected as a representative of muscle development. We investigated its expression, function, and regulation in avian adipocyte differentiation. RESULTS The expression of MYOD1 decreased significantly in the early stage of avian adipocyte differentiation. CRISPR/Cas9-mediated deletion of MYOD1 induced adipocyte differentiation, whereas over-expression of MYOD1 inhibited adipogenesis. The mRNA-seq data showed that MYOD1 could perturb the lipid biosynthetic process during differentiation. Our results showed that MYOD1 directly up-regulates the miR-206 expression by binding the upstream 1200 bp region of miR-206. Then, over-expression of miR-206 can inhibit the adipogenesis. Furthermore, MYOD1 affected the expression of endogenous miR-206 and its target gene Kruppel-like factor 4 (KLF4), which is an important activator of adipogenesis. Accordingly, the inhibition of miR-206 or over-expression of KLF4 could counteract the inhibitory effect of MYOD1 on adipocyte differentiation. CONCLUSIONS Our results establish that MYOD1 inhibits adipocyte differentiation by up-regulating miR-206 to suppress the KLF4 expression. These findings identify a novel function of MYOD1 in adipocyte differentiation, suggesting a potential role in body-fat distribution regulation.
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Affiliation(s)
- Zheng Wang
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, College of Animal Science and Technology, China Agricultural University, Yuanmingyuan West Road No. 2, Beijing, 100193 China
| | - Qiangsen Zhao
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, College of Animal Science and Technology, China Agricultural University, Yuanmingyuan West Road No. 2, Beijing, 100193 China
| | - Xiaoqin Li
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, College of Animal Science and Technology, China Agricultural University, Yuanmingyuan West Road No. 2, Beijing, 100193 China
| | - Zhongtao Yin
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, College of Animal Science and Technology, China Agricultural University, Yuanmingyuan West Road No. 2, Beijing, 100193 China
| | - Sirui Chen
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, College of Animal Science and Technology, China Agricultural University, Yuanmingyuan West Road No. 2, Beijing, 100193 China
| | - Sen Wu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Yuanmingyuan West Road No. 2, Beijing, 100193 China
| | - Ning Yang
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, College of Animal Science and Technology, China Agricultural University, Yuanmingyuan West Road No. 2, Beijing, 100193 China
| | - Zhuocheng Hou
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, MARA, College of Animal Science and Technology, China Agricultural University, Yuanmingyuan West Road No. 2, Beijing, 100193 China
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7
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Lee J, Wu Y, Harada BT, Li Y, Zhao J, He C, Ma Y, Wu X. N 6 -methyladenosine modification of lncRNA Pvt1 governs epidermal stemness. EMBO J 2021; 40:e106276. [PMID: 33729590 DOI: 10.15252/embj.2020106276] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 02/02/2021] [Accepted: 02/15/2021] [Indexed: 11/09/2022] Open
Abstract
Dynamic chemical modifications of RNA represent novel and fundamental mechanisms that regulate stemness and tissue homeostasis. Rejuvenation and wound repair of mammalian skin are sustained by epidermal progenitor cells, which are localized within the basal layer of the skin epidermis. N6 -methyladenosine (m6 A) is one of the most abundant modifications found in eukaryotic mRNA and lncRNA (long noncoding RNA). In this report, we survey changes of m6 A RNA methylomes upon epidermal differentiation and identify Pvt1, a lncRNA whose m6 A modification is critically involved in sustaining stemness of epidermal progenitor cells. With genome-editing and a mouse genetics approach, we show that ablation of m6 A methyltransferase or Pvt1 impairs the self-renewal and wound healing capability of skin. Mechanistically, methylation of Pvt1 transcripts enhances its interaction with MYC and stabilizes the MYC protein in epidermal progenitor cells. Our study presents a global view of epitranscriptomic dynamics that occur during epidermal differentiation and identifies the m6 A modification of Pvt1 as a key signaling event involved in skin tissue homeostasis and wound repair.
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Affiliation(s)
- Jimmy Lee
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Yuchen Wu
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA.,Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Bryan T Harada
- Department of Chemistry, Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA.,Department of Biochemistry and Molecular Biology, Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, USA
| | - Yuanyuan Li
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Jing Zhao
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
| | - Chuan He
- Department of Chemistry, Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA.,Department of Biochemistry and Molecular Biology, Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, USA
| | - Yanlei Ma
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaoyang Wu
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL, USA
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8
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Chang J, Wang R, Yu K, Zhang T, Chen X, Liu Y, Shi R, Wang X, Xia Q, Ma S. Genome-wide CRISPR screening reveals genes essential for cell viability and resistance to abiotic and biotic stresses in Bombyx mori. Genome Res 2020; 30:757-767. [PMID: 32424075 PMCID: PMC7263191 DOI: 10.1101/gr.249045.119] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/30/2020] [Indexed: 12/19/2022]
Abstract
High-throughput genetic screens are powerful methods to interrogate gene function on a genome-wide scale and identify genes responsible to certain stresses. Here, we developed a piggyBac strategy to deliver pooled sgRNA libraries stably into cell lines. We used this strategy to conduct a screen based on genome-wide clustered regularly interspaced short palindromic repeat technology (CRISPR)-Cas9 in Bombyx mori cells. We first constructed a single guide RNA (sgRNA) library containing 94,000 sgRNAs, which targeted 16,571 protein-coding genes. We then generated knockout collections in BmE cells using the piggyBac transposon. We identified 1006 genes that are essential for cell viability under normal growth conditions. Of the identified genes, 82.4% (829 genes) were homologous to essential genes in seven animal species. We also identified 838 genes whose loss facilitated cell growth. Next, we performed context-specific positive screens for resistance to biotic or nonbiotic stresses using temperature and baculovirus separately, which identified several key genes and pathways from each screen. Collectively, our results provide a novel and versatile platform for functional annotations of B. mori genomes and deciphering key genes responsible for various conditions. This study also shows the effectiveness, practicality, and convenience of genome-wide CRISPR screens in nonmodel organisms.
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Affiliation(s)
- Jiasong Chang
- Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Ruolin Wang
- Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Kai Yu
- Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Tong Zhang
- Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Xiaoxu Chen
- Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Yue Liu
- Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Run Shi
- Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Xiaogang Wang
- Biological Science Research Center, Southwest University, Chongqing 400716, China
| | - Qingyou Xia
- Biological Science Research Center, Southwest University, Chongqing 400716, China
- Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China
| | - Sanyuan Ma
- Biological Science Research Center, Southwest University, Chongqing 400716, China
- Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400716, China
- Chongqing Key Laboratory of Sericulture, Southwest University, Chongqing 400716, China
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9
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Wen W, Song S, Han Y, Chen H, Liu X, Qian Q. An efficient Screening System in Yeast to Select a Hyperactive piggyBac Transposase for Mammalian Applications. Int J Mol Sci 2020; 21:ijms21093064. [PMID: 32357554 PMCID: PMC7247424 DOI: 10.3390/ijms21093064] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/15/2020] [Accepted: 04/24/2020] [Indexed: 12/31/2022] Open
Abstract
As non-viral transgenic vectors, the piggyBac transposon system represents an attractive tool for gene delivery to achieve a long-term gene expression in immunotherapy applications due to its large cargo capacity, its lack of a trace of transposon and of genotoxic potential, and its highly engineered structure. However, further improvements in transpose activity are required for industrialization and clinical applications. Herein, we established a one-plasmid effective screening system and a two-step high-throughput screening process in yeast to isolate hyperactive mutants for mammalian cell applications. By applying this screening system, 15 hyperactive piggyBac transposases that exhibited higher transpose activity compared with optimized hyPBase in yeast and four mutants that showed higher transpose activity in mammalian cells were selected among 3000 hyPBase mutants. The most hyperactive transposase, bz-hyPBase, with four mutation sites showed an ability to yield high-efficiency editing in Chinese hamster ovarian carcinoma (CHO) cells and T cells, indicating that they could be expanded for gene therapy approaches. Finally, we tested the potential of this screening system in other versions of piggyBac transposase.
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Affiliation(s)
- Wen Wen
- Shanghai Cell Therapy Research Institute, Shanghai 201805, China; (W.W.); (S.S.); (Y.H.); (H.C.)
- Shanghai Cell Therapy Group, Shanghai 201805, China
| | - Shanshan Song
- Shanghai Cell Therapy Research Institute, Shanghai 201805, China; (W.W.); (S.S.); (Y.H.); (H.C.)
- Shanghai Cell Therapy Group, Shanghai 201805, China
| | - Yuchun Han
- Shanghai Cell Therapy Research Institute, Shanghai 201805, China; (W.W.); (S.S.); (Y.H.); (H.C.)
- Shanghai Cell Therapy Group, Shanghai 201805, China
| | - Haibin Chen
- Shanghai Cell Therapy Research Institute, Shanghai 201805, China; (W.W.); (S.S.); (Y.H.); (H.C.)
- Shanghai Cell Therapy Group, Shanghai 201805, China
| | - Xiangzhen Liu
- Shanghai Cell Therapy Research Institute, Shanghai 201805, China; (W.W.); (S.S.); (Y.H.); (H.C.)
- Shanghai Cell Therapy Group, Shanghai 201805, China
- Correspondence: (X.L.); (Q.Q.); Tel.: +86-021-5959-3168
| | - Qijun Qian
- Shanghai Cell Therapy Research Institute, Shanghai 201805, China; (W.W.); (S.S.); (Y.H.); (H.C.)
- Shanghai Cell Therapy Group, Shanghai 201805, China
- Correspondence: (X.L.); (Q.Q.); Tel.: +86-021-5959-3168
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10
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Schweickert PG, Cheng Z. Application of Genetic Engineering in Biotherapeutics Development. J Pharm Innov 2019. [DOI: 10.1007/s12247-019-09411-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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11
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piggyBac Transposon-Based Immortalization of Human Deciduous Tooth Dental Pulp Cells with Multipotency and Non-Tumorigenic Potential. Int J Mol Sci 2019; 20:ijms20194904. [PMID: 31623314 PMCID: PMC6801629 DOI: 10.3390/ijms20194904] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/21/2019] [Accepted: 09/30/2019] [Indexed: 12/14/2022] Open
Abstract
We aimed to immortalize primarily isolated human deciduous tooth-derived dental pulp cells (HDDPCs) by transfection with piggyBac (PB)-based transposon vectors carrying E7 from human papilloma virus 16 or complementary DNA (cDNA) encoding human telomerase reverse transcriptase (hTERT). HDDPCs were co-transfected with pTrans (conferring PB transposase expression) + pT-pac (conferring puromycin acetyltransferase expression) + pT-tdTomato (conferring tdTomato cDNA expression) and pT-E7 (conferring E7 expression) or pTrans + pT-pac + pT-EGFP (conferring enhanced green fluorescent protein cDNA expression) + pT-hTERT (conferring hTERT expression). After six days, these cells were selected in medium containing 5 μg/mL puromycin for one day, and then cultured in normal medium allowing cell survival. All resultant colonies were harvested and propagated as a pool. Stemness and tumorigenic properties of the established cell lines (“MT_E7” for E7 and “MT_hTERT” for hTERT) with untransfected parental cells (MT) were examined. Both lines exhibited proliferation similar to that of MT, with alkaline phosphatase activity and stemness-specific factor expression. They displayed differentiation potential into multi-lineage cells with no tumorigenic property. Overall, we successfully obtained HDDPC-derived immortalized cell lines using a PB-based transfection system. The resultant and parental cells were indistinguishable. Thus, E7 and hTERT could immortalize HDDPCs without causing cancer-associated changes or altering phenotypic properties.
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12
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Poorebrahim M, Sadeghi S, Fakhr E, Abazari MF, Poortahmasebi V, Kheirollahi A, Askari H, Rajabzadeh A, Rastegarpanah M, Linē A, Cid-Arregui A. Production of CAR T-cells by GMP-grade lentiviral vectors: latest advances and future prospects. Crit Rev Clin Lab Sci 2019; 56:393-419. [PMID: 31314617 DOI: 10.1080/10408363.2019.1633512] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Chimeric antigen receptor (CAR) T-cells represent a paradigm shift in cancer immunotherapy and a new milestone in the history of oncology. In 2017, the Food and Drug Administration approved two CD19-targeted CAR T-cell therapies (Kymriah™, Novartis, and Yescarta™, Kite Pharma/Gilead Sciences) that have remarkable efficacy in some B-cell malignancies. The CAR approach is currently being evaluated in multiple pivotal trials designed for the immunotherapy of hematological malignancies as well as solid tumors. To generate CAR T-cells ex vivo, lentiviral vectors (LVs) are particularly appealing due to their ability to stably integrate relatively large DNA inserts, and to efficiently transduce both dividing and nondividing cells. This review discusses the latest advances and challenges in the design and production of CAR T-cells, and the good manufacturing practices (GMP)-grade production process of LVs used as a gene transfer vehicle. New developments in the application of CAR T-cell therapy are also outlined with particular emphasis on next-generation allogeneic CAR T-cells.
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Affiliation(s)
- Mansour Poorebrahim
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences , Tehran , Iran
| | - Solmaz Sadeghi
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR , Tehran , Iran
| | - Elham Fakhr
- Department of Translational Immunology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT) , Heidelberg , Germany
| | - Mohammad Foad Abazari
- Research Center for Clinical Virology, Tehran University of Medical Sciences , Tehran , Iran
| | - Vahdat Poortahmasebi
- Liver and Gastrointestinal Disease Research Center, Tabriz University of Medical Sciences , Tabriz , Iran.,Infectious and Tropical Disease Research Center, Tabriz University of Medical Sciences , Tabriz , Iran.,Faculty of Medicine, Department of Bacteriology and Virology, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Asma Kheirollahi
- Department of Comparative Biosciences, Faculty of Veterinary Medicine, University of Tehran , Tehran , Iran
| | - Hassan Askari
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences , Tehran , Iran
| | - Alireza Rajabzadeh
- Applied Cell Sciences and Tissue Engineering Department, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences , Tehran , Iran
| | - Malihe Rastegarpanah
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences , Tehran , Iran
| | - Aija Linē
- Latvian Biomedical Research and Study Centre , Riga , Latvia
| | - Angel Cid-Arregui
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR , Tehran , Iran.,Targeted Tumor Vaccines Group, Clinical Cooperation Unit Applied Tumor Immunity, German Cancer Research Center (DKFZ) , Heidelberg , Germany
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13
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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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Rozov SM, Deineko EV. Strategies for Optimizing Recombinant Protein Synthesis in Plant Cells: Classical Approaches and New Directions. Mol Biol 2019. [DOI: 10.1134/s0026893319020146] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Abstract
Transposable elements (TEs) are ubiquitous in both prokaryotes and eukaryotes, and the dynamic character of their interaction with host genomes brings about numerous evolutionary innovations and shapes genome structure and function in a multitude of ways. In traditional classification systems, TEs are often being depicted in simplistic ways, based primarily on the key enzymes required for transposition, such as transposases/recombinases and reverse transcriptases. Recent progress in whole-genome sequencing and long-read assembly, combined with expansion of the familiar range of model organisms, resulted in identification of unprecedentedly long transposable units spanning dozens or even hundreds of kilobases, initially in prokaryotic and more recently in eukaryotic systems. Here, we focus on such oversized eukaryotic TEs, including retrotransposons and DNA transposons, outline their complex and often combinatorial nature and closely intertwined relationship with viruses, and discuss their potential for participating in transfer of long stretches of DNA in eukaryotes.
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Affiliation(s)
- Irina R Arkhipova
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts
- Corresponding author: E-mail:
| | - Irina A Yushenova
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts
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16
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Gurumurthy CB, Perez-Pinera P. Technological advances in integrating multi-kilobase DNA sequences into genomes. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2018. [DOI: 10.1016/j.cobme.2018.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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17
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Bishop DC, Xu N, Tse B, O'Brien TA, Gottlieb DJ, Dolnikov A, Micklethwaite KP. PiggyBac-Engineered T Cells Expressing CD19-Specific CARs that Lack IgG1 Fc Spacers Have Potent Activity against B-ALL Xenografts. Mol Ther 2018; 26:1883-1895. [PMID: 29861327 DOI: 10.1016/j.ymthe.2018.05.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/04/2018] [Accepted: 05/08/2018] [Indexed: 10/14/2022] Open
Abstract
Clinical trials of CD19-specific chimeric antigen receptor (CAR19) T cells have demonstrated remarkable efficacy against relapsed and refractory B cell malignancies. The piggyBac transposon system offers a less complex and more economical means for generating CAR19 T cells compared to viral vectors. We have previously optimized a protocol for the generation of CAR19 T cells using the piggyBac system, but we found that CAR19 T cells had poor in vivo efficacy and persistence, probably due to deleterious FcγR interactions with the CAR's IgG1 Fc-containing spacer domain. We therefore designed three CD19-specifc CARs that lacked the IgG1 Fc region, and we incorporated combinations of CD28 or 4-1BB transmembrane and co-stimulatory domains. PiggyBac-generated CAR19 T cells expressing these re-designed constructs all demonstrated reactivity in vitro specifically against CD19+ cell lines. However, those combining CD28 transmembrane and co-stimulatory domains showed CD4 predominance and inferior cytotoxicity. At high doses, CAR19 T cells were effective against B-ALL in a xenograft mouse model, regardless of co-stimulatory domain. At diminishing doses, 4-1BB co-stimulation led to greater potency and persistence of CAR19 T cells, and it provided protection against B-ALL re-challenge. Production of potent CAR T cells using piggyBac is simple and cost-effective, and it may enable wider access to CAR T cell therapy.
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Affiliation(s)
- David C Bishop
- Westmead Institute for Medical Research, Sydney, NSW, Australia; Department of Haematology, Westmead Hospital, Sydney, NSW, Australia; Blood and Bone Marrow Transplant Unit, Westmead Hospital, Sydney, NSW, Australia; Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Ning Xu
- Blood & Marrow Transplant Facility, Kids Cancer Centre, Sydney Children's Hospital, Sydney, NSW, Australia; Children's Cancer Institute, University of New South Wales, Sydney, NSW, Australia
| | - Benjamin Tse
- Children's Cancer Institute, University of New South Wales, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Tracey A O'Brien
- Blood & Marrow Transplant Facility, Kids Cancer Centre, Sydney Children's Hospital, Sydney, NSW, Australia; Children's Cancer Institute, University of New South Wales, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - David J Gottlieb
- Westmead Institute for Medical Research, Sydney, NSW, Australia; Department of Haematology, Westmead Hospital, Sydney, NSW, Australia; Blood and Bone Marrow Transplant Unit, Westmead Hospital, Sydney, NSW, Australia; Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Sydney Cellular Therapies Laboratory, Westmead Hospital, Sydney, NSW, Australia; Department of Medicine, Westmead Hospital, Sydney, NSW, Australia
| | - Alla Dolnikov
- Blood & Marrow Transplant Facility, Kids Cancer Centre, Sydney Children's Hospital, Sydney, NSW, Australia; Children's Cancer Institute, University of New South Wales, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Kenneth P Micklethwaite
- Westmead Institute for Medical Research, Sydney, NSW, Australia; Department of Haematology, Westmead Hospital, Sydney, NSW, Australia; Blood and Bone Marrow Transplant Unit, Westmead Hospital, Sydney, NSW, Australia; Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Sydney Cellular Therapies Laboratory, Westmead Hospital, Sydney, NSW, Australia.
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18
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Preclinical and clinical advances in transposon-based gene therapy. Biosci Rep 2017; 37:BSR20160614. [PMID: 29089466 PMCID: PMC5715130 DOI: 10.1042/bsr20160614] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/26/2017] [Accepted: 10/30/2017] [Indexed: 02/08/2023] Open
Abstract
Transposons derived from Sleeping Beauty (SB), piggyBac (PB), or Tol2 typically require cotransfection of transposon DNA with a transposase either as an expression plasmid or mRNA. Consequently, this results in genomic integration of the potentially therapeutic gene into chromosomes of the desired target cells, and thus conferring stable expression. Non-viral transfection methods are typically preferred to deliver the transposon components into the target cells. However, these methods do not match the efficacy typically attained with viral vectors and are sometimes associated with cellular toxicity evoked by the DNA itself. In recent years, the overall transposition efficacy has gradually increased by codon optimization of the transposase, generation of hyperactive transposases, and/or introduction of specific mutations in the transposon terminal repeats. Their versatility enabled the stable genetic engineering in many different primary cell types, including stem/progenitor cells and differentiated cell types. This prompted numerous preclinical proof-of-concept studies in disease models that demonstrated the potential of DNA transposons for ex vivo and in vivo gene therapy. One of the merits of transposon systems relates to their ability to deliver relatively large therapeutic transgenes that cannot readily be accommodated in viral vectors such as full-length dystrophin cDNA. These emerging insights paved the way toward the first transposon-based phase I/II clinical trials to treat hematologic cancer and other diseases. Though encouraging results were obtained, controlled pivotal clinical trials are needed to corroborate the efficacy and safety of transposon-based therapies.
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Rajendra Y, Balasubramanian S, Peery RB, Swartling JR, McCracken NA, Norris DL, Frye CC, Barnard GC. Bioreactor scale up and protein product quality characterization of piggyBac transposon derived CHO pools. Biotechnol Prog 2017; 33:534-540. [PMID: 28188692 DOI: 10.1002/btpr.2447] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/06/2017] [Indexed: 11/10/2022]
Abstract
Chinese hamster ovary (CHO) cells remain the most popular host for the production of biopharmaceutical drugs, particularly monoclonal antibodies (mAbs), bispecific antibodies, and Fc-fusion proteins. Creating and characterizing the stable CHO clonally-derived cell lines (CDCLs) needed to manufacture these therapeutic proteins is a lengthy and laborious process. Therefore, CHO pools have increasingly been used to rapidly produce protein to support and enable preclinical drug development. We recently described the generation of CHO pools yielding mAb titers as high as 7.6 g/L in a 16 day bioprocess using piggyBac transposon-mediated gene integration. In this study, we wanted to understand why the piggyBac pool titers were significantly higher (2-10 fold) than the control CHO pools. Higher titers were the result of a combination of increased average gene copy number, significantly higher messenger RNA levels and the homogeneity (i.e. less diverse population distribution) of the piggyBac pools, relative to the control pools. In order to validate the use of piggyBac pools to support preclinical drug development, we then performed an in-depth product quality analysis of purified protein. The product quality of protein obtained from the piggyBac pools was very similar to the product quality profile of protein obtained from the control pools. Finally, we demonstrated the scalability of these pools from shake flasks to 36L bioreactors. Overall, these results suggest that gram quantities of therapeutic protein can be rapidly obtained from piggyBac CHO pools without significantly changing product quality attributes. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 33:534-540, 2017.
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Affiliation(s)
- Yashas Rajendra
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Lilly Corporate Center, Indianapolis, IN, 46225
| | - Sowmya Balasubramanian
- Bioprocess Research and Development, Eli Lilly and Company, LTC-North, 1200 Kentucky Avenue, Indianapolis, IN, 46221
| | - Robert B Peery
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Lilly Corporate Center, Indianapolis, IN, 46225
| | - James R Swartling
- Bioprocess Research and Development, Eli Lilly and Company, LTC-North, 1200 Kentucky Avenue, Indianapolis, IN, 46221
| | - Neil A McCracken
- Bioprocess Research and Development, Eli Lilly and Company, LTC-North, 1200 Kentucky Avenue, Indianapolis, IN, 46221
| | - Dawn L Norris
- Bioprocess Research and Development, Eli Lilly and Company, LTC-North, 1200 Kentucky Avenue, Indianapolis, IN, 46221
| | - Christopher C Frye
- Bioprocess Research and Development, Eli Lilly and Company, LTC-North, 1200 Kentucky Avenue, Indianapolis, IN, 46221
| | - Gavin C Barnard
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Lilly Corporate Center, Indianapolis, IN, 46225
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20
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Yang D, Liao R, Zheng Y, Sun L, Xu T. Analysis of PBase Binding Profile Indicates an Insertion Target Selection Mechanism Dependent on TTAA, But Not Transcriptional Activity. Int J Biol Sci 2016; 12:1074-82. [PMID: 27570481 PMCID: PMC4997051 DOI: 10.7150/ijbs.15589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 05/15/2016] [Indexed: 12/20/2022] Open
Abstract
Transposons and retroviruses are important pathogenic agents and tools for mutagenesis and transgenesis. Insertion target selection is a key feature for a given transposon or retrovirus. The piggyBac (PB) transposon is highly active in mice and human cells, which has a much better genome-wide distribution compared to the retrovirus and P-element. However, the underlying reason is not clear. Utilizing a tagged functional PB transposase (PBase), we were able to conduct genome-wide profiling for PBase binding sites in the mouse genome. We have shown that PBase binding mainly depends on the distribution of the tetranucleotide TTAA, which is not affected by the presence of PB DNA. Furthermore, PBase binding is negatively influenced by the methylation of CG sites in the genome. Analysis of a large collection of PB insertions in mice has revealed an insertion profile similar to the PBase binding profile. Interestingly, this profile is not correlated with transcriptional active genes in the genome or transcriptionally active regions within a transcriptional unit. This differs from what has been previously shown for P-element and retroviruses insertions. Our study provides an explanation for PB's genome-wide insertion distribution and also suggests that PB target selection relies on a new mechanism independent of active transcription and open chromatin structure.
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Affiliation(s)
- Dong Yang
- 1. State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Fudan-Yale Center for Biomedical Research, Innovation Center for International Cooperation of Genetics and Development, Institute of Developmental Biology and Molecular Medicine, School of Life Sciences, Fudan University, Shanghai 200433; 2. Howard Hughes Medical Institute, Department of Genetics, Yale University School of Medicine, New Haven, CT 06536
| | - Ruiqi Liao
- 1. State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Fudan-Yale Center for Biomedical Research, Innovation Center for International Cooperation of Genetics and Development, Institute of Developmental Biology and Molecular Medicine, School of Life Sciences, Fudan University, Shanghai 200433
| | - Yun Zheng
- 3. Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Ling Sun
- 1. State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Fudan-Yale Center for Biomedical Research, Innovation Center for International Cooperation of Genetics and Development, Institute of Developmental Biology and Molecular Medicine, School of Life Sciences, Fudan University, Shanghai 200433
| | - Tian Xu
- 1. State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Fudan-Yale Center for Biomedical Research, Innovation Center for International Cooperation of Genetics and Development, Institute of Developmental Biology and Molecular Medicine, School of Life Sciences, Fudan University, Shanghai 200433; 2. Howard Hughes Medical Institute, Department of Genetics, Yale University School of Medicine, New Haven, CT 06536
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21
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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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22
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Nafissi N, Foldvari M. Neuroprotective therapies in glaucoma: II. Genetic nanotechnology tools. Front Neurosci 2015; 9:355. [PMID: 26528114 PMCID: PMC4604245 DOI: 10.3389/fnins.2015.00355] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/17/2015] [Indexed: 01/01/2023] Open
Abstract
Neurotrophic factor genome engineering could have many potential applications not only in the deeper understanding of neurodegenerative disorders but also in improved therapeutics. The fields of nanomedicine, regenerative medicine, and gene/cell-based therapy have been revolutionized by the development of safer and efficient non-viral technologies for gene delivery and genome editing with modern techniques for insertion of the neurotrophic factors into clinically relevant cells for a more sustained pharmaceutical effect. It has been suggested that the long-term expression of neurotrophic factors is the ultimate approach to prevent and/or treat neurodegenerative disorders such as glaucoma in patients who do not respond to available treatments or are at the progressive stage of the disease. Recent preclinical research suggests that novel neuroprotective gene and cell therapeutics could be promising approaches for both non-invasive neuroprotection and regenerative functions in the eye. Several progenitor and retinal cell types have been investigated as potential candidates for glaucoma neurotrophin therapy either as targets for gene therapy, options for cell replacement therapy, or as vehicles for gene delivery. Therefore, in parallel with deeper understanding of the specific protective effects of different neurotrophic factors and the potential therapeutic cell candidates for glaucoma neuroprotection, the development of non-invasive and highly specific gene delivery methods with safe and effective technologies to modify cell candidates for life-long neuroprotection in the eye is essential before investing in this field.
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Affiliation(s)
| | - Marianna Foldvari
- School of Pharmacy and Waterloo Institute of Nanotechnology, University of WaterlooWaterloo, ON, Canada
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23
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Inada E, Saitoh I, Watanabe S, Aoki R, Miura H, Ohtsuka M, Murakami T, Sawami T, Yamasaki Y, Sato M. PiggyBac transposon-mediated gene delivery efficiently generates stable transfectants derived from cultured primary human deciduous tooth dental pulp cells (HDDPCs) and HDDPC-derived iPS cells. Int J Oral Sci 2015. [PMID: 26208039 PMCID: PMC4582557 DOI: 10.1038/ijos.2015.18] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The ability of human deciduous tooth dental pulp cells (HDDPCs) to differentiate into odontoblasts that generate mineralized tissue holds immense potential for therapeutic use in the field of tooth regenerative medicine. Realization of this potential depends on efficient and optimized protocols for the genetic manipulation of HDDPCs. In this study, we demonstrate the use of a PiggyBac (PB)-based gene transfer system as a method for introducing nonviral transposon DNA into HDDPCs and HDDPC-derived inducible pluripotent stem cells. The transfection efficiency of the PB-based system was significantly greater than previously reported for electroporation-based transfection of plasmid DNA. Using the neomycin resistance gene as a selection marker, HDDPCs were stably transfected at a rate nearly 40-fold higher than that achieved using conventional methods. Using this system, it was also possible to introduce two constructs simultaneously into a single cell. The resulting stable transfectants, expressing tdTomato and enhanced green fluorescent protein, exhibited both red and green fluorescence. The established cell line did not lose the acquired phenotype over three months of culture. Based on our results, we concluded that PB is superior to currently available methods for introducing plasmid DNA into HDDPCs. There may be significant challenges in the direct clinical application of this method for human dental tissue engineering due to safety risks and ethical concerns. However, the high level of transfection achieved with PB may have significant advantages in basic scientific research for dental tissue engineering applications, such as functional studies of genes and proteins. Furthermore, it is a useful tool for the isolation of genetically engineered HDDPC-derived stem cells for studies in tooth regenerative medicine.
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Affiliation(s)
- Emi Inada
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Issei Saitoh
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University, Niigata, Japan
| | - Satoshi Watanabe
- Animal Genome Research Unit, Division of Animal Science, National Institute of Agrobiological Sciences, Ibaraki, Japan
| | - Reiji Aoki
- Functional Biomolecules Research Group, National Agriculture and Food Research Organization, Ibaraki, Japan
| | - Hiromi Miura
- Division of Basic Molecular Science and Molecular Medicine, School of Medicine, Tokai University, Kanagawa, Japan
| | - Masato Ohtsuka
- Division of Basic Molecular Science and Molecular Medicine, School of Medicine, Tokai University, Kanagawa, Japan
| | - Tomoya Murakami
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University, Niigata, Japan
| | - Tadashi Sawami
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University, Niigata, Japan
| | - Youichi Yamasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Masahiro Sato
- Section of Gene Expression Regulation, Frontier Science Research Center, Kagoshima University, Kagoshima, Japan
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24
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Low-cost generation of Good Manufacturing Practice–grade CD19-specific chimeric antigen receptor–expressing T cells using piggyBac gene transfer and patient-derived materials. Cytotherapy 2015. [DOI: 10.1016/j.jcyt.2015.05.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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25
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Hosseinkhani H, Abedini F, Ou KL, Domb AJ. Polymers in gene therapy technology. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3432] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hossein Hosseinkhani
- Graduate Institute of Biomedical Engineering; National Taiwan University of Science and Technology (Taiwan Tech); Taipei 10607 Taiwan
- Center of Excellence in Nanomedicine; National Taiwan University of Science and Technology (Taiwan Tech); Taipei 10607 Taiwan
- Research Center for Biomedical Devices and Prototyping Production, Research Center for Biomedical Implants and Microsurgery Devices, Graduate Institute of Biomedical Materials and Tissue Engineering, College of Oral Medicine, Taipei Medical University, Department of Dentistry; Taipei Medical University-Shuang Ho Hospital; Taipei 235 Taiwan
| | - Fatemeh Abedini
- Razi Vaccine and Serum Research Institute; Karaj Alborz IRAN
| | - Keng-Liang Ou
- Research Center for Biomedical Devices and Prototyping Production, Research Center for Biomedical Implants and Microsurgery Devices, Graduate Institute of Biomedical Materials and Tissue Engineering, College of Oral Medicine, Taipei Medical University, Department of Dentistry; Taipei Medical University-Shuang Ho Hospital; Taipei 235 Taiwan
| | - Abraham J. Domb
- Institute of Drug Research, The Center for Nanoscience and Nanotechnology, School of Pharmacy-Faculty of Medicine; The Hebrew University of Jerusalem; Jerusalem 91120 Israel
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26
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Zhao L, Ng ET, Koopman P. ApiggyBactransposon- and gateway-enhanced system for efficient BAC transgenesis. Dev Dyn 2014; 243:1086-94. [DOI: 10.1002/dvdy.24153] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 05/20/2014] [Accepted: 06/05/2014] [Indexed: 11/07/2022] Open
Affiliation(s)
- Liang Zhao
- Institute for Molecular Bioscience; The University of Queensland; Brisbane QLD 4072 Australia
| | - Ee Ting Ng
- Institute for Molecular Bioscience; The University of Queensland; Brisbane QLD 4072 Australia
| | - Peter Koopman
- Institute for Molecular Bioscience; The University of Queensland; Brisbane QLD 4072 Australia
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Ding S, Xu T, Wu X. Generation of genetically engineered mice by the piggyBac transposon system. Methods Mol Biol 2014; 1194:171-85. [PMID: 25064103 DOI: 10.1007/978-1-4939-1215-5_9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Genetically engineered mice (GEM) are invaluable tools not only for understanding mammalian biology but also for modeling human diseases. Here we present protocols to generate GEM with the piggyBac (PB) transposon system. In the first part, we describe a transgenic procedure that co-injects the transgene carried by a PB donor plasmid and a PB transposase (PBase)-expressing helper plasmid into the pronuclei of fertilized eggs. In the second part, we provide a large-scale, cost-effective insertional mutagenesis strategy that remobilizes single-copy PB transposons in the male germ line. Given that PB can transpose in a broad spectrum of eukaryotic hosts, the protocols described here could be adapted for other species in the future.
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Affiliation(s)
- Sheng Ding
- State Key Laboratory of Genetic Engineering and Institute of Developmental Biology and Molecular Medicine, Fudan-Yale Biomedical Research Center, School of Life Sciences, Fudan University, Shanghai, 200433, China
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Mossine VV, Waters JK, Hannink M, Mawhinney TP. piggyBac transposon plus insulators overcome epigenetic silencing to provide for stable signaling pathway reporter cell lines. PLoS One 2013; 8:e85494. [PMID: 24376882 PMCID: PMC3869926 DOI: 10.1371/journal.pone.0085494] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 12/04/2013] [Indexed: 12/28/2022] Open
Abstract
Genetically modified hematopoietic progenitors represent an important testing platform for a variety of cell-based therapies, pharmaceuticals, diagnostics and other applications. Stable expression of a transfected gene of interest in the cells is often obstructed by its silencing. DNA transposons offer an attractive non-viral alternative of transgene integration into the host genome, but their broad applicability to leukocytes and other "transgene unfriendly" cells has not been fully demonstrated. Here we assess stability of piggyBac transposon-based reporter expression in murine prostate adenocarcinoma TRAMP-C2, human monocyte THP-1 and erythroleukemia K562 cell lines, along with macrophages and dendritic cells (DCs) that have differentiated from the THP-1 transfects. The most efficient and stable reporter activity was observed for combinations of the transposon inverted terminal repeats and one 5'- or two cHS4 core insulators flanking a green fluorescent protein reporter construct, with no detectable silencing over 10 months of continuous cell culture in absence of any selective pressure. In monocytic THP-1 cells, the functional activity of luciferase reporters for NF-κB, Nrf2, or HIF-1α has not decreased over time and was retained following differentiation into macrophages and DCs, as well. These results imply pB as a versatile tool for gene integration in monocytic cells in general, and as a convenient access route to DC-based signaling pathway reporters suitable for high-throughput assays, in particular.
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Affiliation(s)
- Valeri V. Mossine
- Department of Biochemistry, University of Missouri, Columbia, Missouri, United States of America
- Experiment Station Chemical Labs, University of Missouri, Columbia, Missouri, United States of America
- * E-mail:
| | - James K. Waters
- Experiment Station Chemical Labs, University of Missouri, Columbia, Missouri, United States of America
| | - Mark Hannink
- Department of Biochemistry, University of Missouri, Columbia, Missouri, United States of America
| | - Thomas P. Mawhinney
- Department of Biochemistry, University of Missouri, Columbia, Missouri, United States of America
- Experiment Station Chemical Labs, University of Missouri, Columbia, Missouri, United States of America
- Department of Child Health, University of Missouri, Columbia, Missouri, United States of America
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Zhang Z, Zhang S, Huang X, Orwig KE, Sheng Y. Rapid assembly of customized TALENs into multiple delivery systems. PLoS One 2013; 8:e80281. [PMID: 24244669 PMCID: PMC3820630 DOI: 10.1371/journal.pone.0080281] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Accepted: 10/11/2013] [Indexed: 11/18/2022] Open
Abstract
Transcriptional activator-like effector nucleases (TALENs) have become a powerful tool for genome editing. Here we present an efficient TALEN assembly approach in which TALENs are assembled by direct Golden Gate ligation into Gateway(®) Entry vectors from a repeat variable di-residue (RVD) plasmid array. We constructed TALEN pairs targeted to mouse Ddx3 subfamily genes, and demonstrated that our modified TALEN assembly approach efficiently generates accurate TALEN moieties that effectively introduce mutations into target genes. We generated "user friendly" TALEN Entry vectors containing TALEN expression cassettes with fluorescent reporter genes that can be efficiently transferred via Gateway (LR) recombination into different delivery systems. We demonstrated that the TALEN Entry vectors can be easily transferred to an adenoviral delivery system to expand application to cells that are difficult to transfect. Since TALENs work in pairs, we also generated a TALEN Entry vector set that combines a TALEN pair into one PiggyBac transposon-based destination vector. The approach described here can also be modified for construction of TALE transcriptional activators, repressors or other functional domains.
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Affiliation(s)
- Zhengxing Zhang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania, United States of America
| | - Siliang Zhang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania, United States of America
| | - Xin Huang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania, United States of America
- Women’s Cancer Research Center, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, United States of America
| | - Kyle E. Orwig
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania, United States of America
| | - Yi Sheng
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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