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Uraki R, Halfmann PJ, Iida S, Yamayoshi S, Furusawa Y, Kiso M, Ito M, Iwatsuki-Horimoto K, Mine S, Kuroda M, Maemura T, Sakai-Tagawa Y, Ueki H, Li R, Liu Y, Larson D, Fukushi S, Watanabe S, Maeda K, Pekosz A, Kandeil A, Webby RJ, Wang Z, Imai M, Suzuki T, Kawaoka Y. Characterization of SARS-CoV-2 Omicron BA.4 and BA.5 isolates in rodents. Nature 2022; 612:540-545. [PMID: 36323336 DOI: 10.1038/s41586-022-05482-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 10/25/2022] [Indexed: 11/25/2022]
Abstract
The BA.2 sublineage of the SARS-CoV-2 Omicron variant has become dominant in most countries around the world; however, the prevalence of BA.4 and BA.5 is increasing rapidly in several regions. BA.2 is less pathogenic in animal models than previously circulating variants of concern1-4. Compared with BA.2, however, BA.4 and BA.5 possess additional substitutions in the spike protein, which play a key role in viral entry, raising concerns that the replication capacity and pathogenicity of BA.4 and BA.5 are higher than those of BA.2. Here we have evaluated the replicative ability and pathogenicity of BA.4 and BA.5 isolates in wild-type Syrian hamsters, human ACE2 (hACE2) transgenic hamsters and hACE2 transgenic mice. We have observed no obvious differences among BA.2, BA.4 and BA.5 isolates in growth ability or pathogenicity in rodent models, and less pathogenicity compared to a previously circulating Delta (B.1.617.2 lineage) isolate. In addition, in vivo competition experiments revealed that BA.5 outcompeted BA.2 in hamsters, whereas BA.4 and BA.2 exhibited similar fitness. These findings suggest that BA.4 and BA.5 clinical isolates have similar pathogenicity to BA.2 in rodents and that BA.5 possesses viral fitness superior to that of BA.2.
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Affiliation(s)
- Ryuta Uraki
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.,The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
| | - Peter J Halfmann
- Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Shun Iida
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Seiya Yamayoshi
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.,The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
| | - Yuri Furusawa
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.,The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
| | - Maki Kiso
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Mutsumi Ito
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | | | - Sohtaro Mine
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Kuroda
- Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Tadashi Maemura
- Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Yuko Sakai-Tagawa
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Hiroshi Ueki
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.,The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
| | - Rong Li
- Department of Animal, Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, UT, USA
| | - Yanan Liu
- Department of Animal, Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, UT, USA
| | - Deanna Larson
- Department of Animal, Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, UT, USA
| | - Shuetsu Fukushi
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shinji Watanabe
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ken Maeda
- Department of Veterinary Science, National Institute of Infectious Diseases, Tokyo, Japan
| | - Andrew Pekosz
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Ahmed Kandeil
- Department of Infectious Diseases, St Jude Children's Research Hospital, Memphis, TN, USA.,Center of Scientific Excellence for Influenza Viruses, National Research Centre, Giza, Egypt
| | - Richard J Webby
- Department of Infectious Diseases, St Jude Children's Research Hospital, Memphis, TN, USA
| | - Zhongde Wang
- Department of Animal, Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, UT, USA
| | - Masaki Imai
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan. .,The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan.
| | - Tadaki Suzuki
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan.
| | - Yoshihiro Kawaoka
- Division of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan. .,The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan. .,Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA.
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2
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Diamond M, Halfmann P, Maemura T, Iwatsuki-Horimoto K, Iida S, Kiso M, Scheaffer S, Darling T, Joshi A, Loeber S, Foster S, Ying B, Whitener B, Floyd K, Ujie M, Nakajima N, Ito M, Wright R, Uraki R, Li R, Sakai Y, Liu Y, Larson D, Osorio J, Hernandez-Ortiz J, Čiuoderis K, Florek K, Patel M, Bateman A, Odle A, Wong LY, Wang Z, Edara VV, Chong Z, Thackray L, Ueki H, Yamayoshi S, Imai M, Perlman S, Webby R, Seder R, Suthar M, Garcia-Sastre A, Schotsaert M, Suzuki T, Boon A, Kawaoka Y, Douek D, Moliva J, Sullivan N, Gagne M, Ransier A, Case J, Jeevan T, Franks J, Fabrizio T, DeBeauchamp J, Kercher L, Seiler P, Singh G, Warang P, Gonzalez-Reiche AS, Sordillo E, van Bakel H, Simon V. The SARS-CoV-2 B.1.1.529 Omicron virus causes attenuated infection and disease in mice and hamsters. RESEARCH SQUARE 2021:rs.3.rs-1211792. [PMID: 34981044 PMCID: PMC8722607 DOI: 10.21203/rs.3.rs-1211792/v1] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Despite the development and deployment of antibody and vaccine countermeasures, rapidly-spreading SARS-CoV-2 variants with mutations at key antigenic sites in the spike protein jeopardize their efficacy. The recent emergence of B.1.1.529, the Omicron variant1,2, which has more than 30 mutations in the spike protein, has raised concerns for escape from protection by vaccines and therapeutic antibodies. A key test for potential countermeasures against B.1.1.529 is their activity in pre-clinical rodent models of respiratory tract disease. Here, using the collaborative network of the SARS-CoV-2 Assessment of Viral Evolution (SAVE) program of the National Institute of Allergy and Infectious Diseases (NIAID), we evaluated the ability of multiple B.1.1.529 Omicron isolates to cause infection and disease in immunocompetent and human ACE2 (hACE2) expressing mice and hamsters. Despite modeling and binding data suggesting that B.1.1.529 spike can bind more avidly to murine ACE2, we observed attenuation of infection in 129, C57BL/6, and BALB/c mice as compared with previous SARS-CoV-2 variants, with limited weight loss and lower viral burden in the upper and lower respiratory tracts. Although K18-hACE2 transgenic mice sustained infection in the lungs, these animals did not lose weight. In wild-type and hACE2 transgenic hamsters, lung infection, clinical disease, and pathology with B.1.1.529 also were milder compared to historical isolates or other SARS-CoV-2 variants of concern. Overall, experiments from multiple independent laboratories of the SAVE/NIAID network with several different B.1.1.529 isolates demonstrate attenuated lung disease in rodents, which parallels preliminary human clinical data.
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Affiliation(s)
| | - Peter Halfmann
- Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, USA
| | | | | | - Shun Iida
- Department of Pathology, National Institute of Infectious Diseases, Tokyo
| | - Maki Kiso
- Institute of Medical Sciences, University of Tokyo
| | | | | | | | | | - Stephanie Foster
- Center for Childhood Infections and Vaccines of Children's Healthcare of Atlanta, Department of Pediatrics, Emory Vaccine Center, Emory University School of Medicine
| | | | - Bradley Whitener
- Departments of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Michiko Ujie
- Division of Virology, Institute of Medical Science, University of Tokyo
| | | | - Mutsumi Ito
- University of Tokyo, Institute of Medical Science
| | - Ryan Wright
- Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison
| | - Ryuta Uraki
- National Center for Global Health and Medicine Research Institute
| | - Rong Li
- Department of Animal Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University
| | - Yuko Sakai
- Institute of Medical Sciences, University of Tokyo
| | - Yanan Liu
- Department of Animal Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University
| | - Deanna Larson
- Department of Animal Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University
| | | | - Juan Hernandez-Ortiz
- Department of Pathobiological Sciences, School of Veterinary Medicine. University of Wisconsin, Madison
| | | | | | - Mit Patel
- Center for Childhood Infections and Vaccines of Children's Healthcare of Atlanta, Department of Pediatrics, Emory Vaccine Center, Emory University School of Medicine
| | | | - Abby Odle
- Department of Microbiology and Immunology, University of Iowa
| | - Lok-Yin Wong
- Department of Microbiology and Immunology, University of Iowa
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - James Case
- Washington University School of Medicine
| | | | - John Franks
- St. Jude Children's Research Hospital, Memphis, TN, USA
| | | | | | - Lisa Kercher
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Patrick Seiler
- Department of Infectious Diseases, St. Jude Children's Research Hospital
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3
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Applications of piggyBac Transposons for Genome Manipulation in Stem Cells. Stem Cells Int 2021; 2021:3829286. [PMID: 34567130 PMCID: PMC8460389 DOI: 10.1155/2021/3829286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 08/16/2021] [Indexed: 12/20/2022] Open
Abstract
Transposons are mobile genetic elements in the genome. The piggyBac (PB) transposon system is increasingly being used for stem cell research due to its high transposition efficiency and seamless excision capacity. Over the past few decades, forward genetic screens based on PB transposons have been successfully established to identify genes associated with drug resistance and stem cell-related characteristics. Moreover, PB transposon is regarded as a promising gene therapy vector and has been used in some clinically relevant stem cells. Here, we review the recent progress on the basic biology of PB, highlight its applications in current stem cell research, and discuss its advantages and challenges.
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4
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Sandoval-Villegas N, Nurieva W, Amberger M, Ivics Z. Contemporary Transposon Tools: A Review and Guide through Mechanisms and Applications of Sleeping Beauty, piggyBac and Tol2 for Genome Engineering. Int J Mol Sci 2021; 22:ijms22105084. [PMID: 34064900 PMCID: PMC8151067 DOI: 10.3390/ijms22105084] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 04/30/2021] [Accepted: 05/05/2021] [Indexed: 01/19/2023] Open
Abstract
Transposons are mobile genetic elements evolved to execute highly efficient integration of their genes into the genomes of their host cells. These natural DNA transfer vehicles have been harnessed as experimental tools for stably introducing a wide variety of foreign DNA sequences, including selectable marker genes, reporters, shRNA expression cassettes, mutagenic gene trap cassettes, and therapeutic gene constructs into the genomes of target cells in a regulated and highly efficient manner. Given that transposon components are typically supplied as naked nucleic acids (DNA and RNA) or recombinant protein, their use is simple, safe, and economically competitive. Thus, transposons enable several avenues for genome manipulations in vertebrates, including transgenesis for the generation of transgenic cells in tissue culture comprising the generation of pluripotent stem cells, the production of germline-transgenic animals for basic and applied research, forward genetic screens for functional gene annotation in model species and therapy of genetic disorders in humans. This review describes the molecular mechanisms involved in transposition reactions of the three most widely used transposon systems currently available (Sleeping Beauty, piggyBac, and Tol2), and discusses the various parameters and considerations pertinent to their experimental use, highlighting the state-of-the-art in transposon technology in diverse genetic applications.
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Affiliation(s)
| | | | | | - Zoltán Ivics
- Correspondence: ; Tel.: +49-6103-77-6000; Fax: +49-6103-77-1280
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5
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Yang L, Wu X, Zhang N, Shi J, Zhou R, Su Q, Zheng E, Huang S, Xu Z, Hong L, Gu T, Yang J, Yang H, Cai G, Wu Z, Li Z. Knockdown of RLIM inhibits XIST expression and improves developmental competence of cloned male pig embryos. Mol Reprod Dev 2021; 88:228-237. [PMID: 33650239 DOI: 10.1002/mrd.23460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/01/2021] [Accepted: 02/08/2021] [Indexed: 11/09/2022]
Abstract
Ectopic expression of Xist on the putative active X chromosome is a primary cause of the low developmental efficiency of cloned mouse and pig embryos. Suppression of abnormal Xist expression via gene knockout or RNA interference (RNAi) can significantly enhance the developmental competence of cloned mouse and pig embryos. RLIM is a Xist expression activator, whereas REX1 is an Xist transcription inhibitor, as RLIM triggers Xist expression by mediating the proteasomal degradation of REX1 to induce imprinted and random X chromosome inactivation in mice. This study aimed to test whether the knockdown of RLIM and overexpression of REX1 can repress aberrant Xist expression and improve the developmental ability of cloned male pig embryos. Results showed that injection of anti-RLIM small interfering RNA significantly decreased Xist messenger RNA abundance, increased REX1 protein level, and enhanced the preimplantation development of cloned male porcine embryos. These positive effects were not observed in cloned male pig embryos injected with REX1 expression plasmid, which might be due to the low expression efficiency of injected REX1 plasmid and/or the short half-life of expressed REX1 protein. The findings from this study indicated that RLIM participated in the ectopic activation of Xist expression in cloned pig embryos by targeting REX1 degradation. Furthermore, this study provided a new method to improve cloned pig embryo development by the inhibition of Xist expression via RNAi of RLIM.
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Affiliation(s)
- Liusong Yang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Xiao Wu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Ning Zhang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Junsong Shi
- Guangdong Wens Pig Breeding Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Rong Zhou
- Guangdong Wens Pig Breeding Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Qiaoyun Su
- Guangdong Wens Pig Breeding Technology Co., Ltd., Guangzhou, Guangdong, China
| | - Enqin Zheng
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Sixiu Huang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Zheng Xu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Linjun Hong
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Ting Gu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Jie Yang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Huaqiang Yang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Gengyuan Cai
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Zhenfang Wu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | - Zicong Li
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
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Huang X, Zou X, Xu Z, Tang F, Shi J, Zheng E, Liu D, Moisyadi S, Urschitz J, Wu Z, Li Z. Efficient deletion of LoxP-flanked selectable marker genes from the genome of transgenic pigs by an engineered Cre recombinase. Transgenic Res 2020; 29:307-319. [PMID: 32410183 DOI: 10.1007/s11248-020-00200-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 04/17/2020] [Indexed: 11/26/2022]
Abstract
Genetically modified (GM) pigs hold great promises for pig genetic improvement, human health and life science. When GM pigs are produced, selectable marker genes (SMGs) are usually introduced into their genomes for host cell or animal recognition. However, the SMGs that remain in GM pigs might have multiple side effects. To avoid the possible side effects caused by the SMGs, they should be removed from the genome of GM pigs before their commercialization. The Cre recombinase is commonly used to delete the LoxP sites-flanked SMGs from the genome of GM animals. Although SMG-free GM pigs have been generated by Cre-mediated recombination, more efficient and cost-effective approaches are essential for the commercialization of SMG-free GM pigs. In this article we describe the production of a recombinant Cre protein containing a cell-penetrating and a nuclear localization signal peptide in one construct. This engineered Cre enzyme can efficiently excise the LoxP-flanked SMGs in cultured fibroblasts isolated from a transgenic pig, which then can be used as nuclear donor cells to generate live SMG-free GM pigs harboring a desired transgene by somatic cell nuclear transfer. This study describes an efficient and far-less costly method for production of SMG-free GM pigs.
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Affiliation(s)
- Xiaoling Huang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
- Guangdong Guangken Animal Husbandry Engineering Research Institute Co., Ltd., Guangzhou, 510610, Guangdong, China
| | - Xian Zou
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Zhiqian Xu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Fei Tang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Junsong Shi
- Guangdong Wens Pig Breeding Technology Co., Ltd., Wens Foodstuff Group Co., Ltd., Yunfu, 527400, Guangdong, China
| | - Enqin Zheng
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Dewu Liu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Stefan Moisyadi
- Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, 96822, USA
- Manoa BioSciences, 1717 Mott-Smith Dr. #3213, Honolulu, HI, 96822, USA
| | - Johann Urschitz
- Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, 96822, USA
| | - Zhenfang Wu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China.
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China.
| | - Zicong Li
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China.
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China.
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7
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piggyBac-Based Non-Viral In Vivo Gene Delivery Useful for Production of Genetically Modified Animals and Organs. Pharmaceutics 2020; 12:pharmaceutics12030277. [PMID: 32204422 PMCID: PMC7151002 DOI: 10.3390/pharmaceutics12030277] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/17/2020] [Accepted: 03/18/2020] [Indexed: 11/17/2022] Open
Abstract
In vivo gene delivery involves direct injection of nucleic acids (NAs) into tissues, organs, or tail-veins. It has been recognized as a useful tool for evaluating the function of a gene of interest (GOI), creating models for human disease and basic research targeting gene therapy. Cargo frequently used for gene delivery are largely divided into viral and non-viral vectors. Viral vectors have strong infectious activity and do not require the use of instruments or reagents helpful for gene delivery but bear immunological and tumorigenic problems. In contrast, non-viral vectors strictly require instruments (i.e., electroporator) or reagents (i.e., liposomes) for enhanced uptake of NAs by cells and are often accompanied by weak transfection activity, with less immunological and tumorigenic problems. Chromosomal integration of GOI-bearing transgenes would be ideal for achieving long-term expression of GOI. piggyBac (PB), one of three transposons (PB, Sleeping Beauty (SB), and Tol2) found thus far, has been used for efficient transfection of GOI in various mammalian cells in vitro and in vivo. In this review, we outline recent achievements of PB-based production of genetically modified animals and organs and will provide some experimental concepts using this system.
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8
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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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9
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Sato M, Saitoh I, Inada E, Nakamura S, Watanabe S. Potential for Isolation of Immortalized Hepatocyte Cell Lines by Liver-Directed In Vivo Gene Delivery of Transposons in Mice. Stem Cells Int 2019; 2019:5129526. [PMID: 31281376 PMCID: PMC6589260 DOI: 10.1155/2019/5129526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 05/06/2019] [Indexed: 12/14/2022] Open
Abstract
Isolation of hepatocytes and their culture in vitro represent important avenues to explore the function of such cells. However, these studies are often difficult to perform because of the inability of hepatocytes to proliferate in vitro. Immortalization of isolated hepatocytes is thus an important step toward continuous in vitro culture. For cellular immortalization, integration of relevant genes into the host chromosomes is a prerequisite. Transposons, which are mobile genetic elements, are known to facilitate integration of genes of interest (GOI) into chromosomes in vitro and in vivo. Here, we proposed that a combination of transposon- and liver-directed introduction of nucleic acids may confer acquisition of unlimited cellular proliferative potential on hepatocytes, enabling the possible isolation of immortalized hepatocyte cell lines, which has often failed using more traditional immortalization methods.
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Affiliation(s)
- Masahiro Sato
- Section of Gene Expression Regulation, Frontier Science Research Center, Kagoshima University, Kagoshima 890-8544, Japan
| | - Issei Saitoh
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Science, Niigata University, Niigata 951-8514, Japan
| | - Emi Inada
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan
| | - Shingo Nakamura
- Division of Biomedical Engineering, National Defense Medical College Research Institute, Saitama 359-8513, Japan
| | - Satoshi Watanabe
- Animal Genome Unit, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-0901, Japan
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10
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Nguyen TV, Wittayarat M, Do LTK, Nguyen TV, Nii M, Namula Z, Kunihara T, Tanihara F, Hirata M, Otoi T. Effects of chlorogenic acid (CGA) supplementation during in vitro maturation culture on the development and quality of porcine embryos with electroporation treatment after in vitro fertilization. Anim Sci J 2018; 89:1207-1213. [PMID: 29806122 DOI: 10.1111/asj.13049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 04/12/2018] [Indexed: 12/21/2022]
Abstract
Electroporation is the technique of choice to introduce an exogenous gene into embryos for transgenic animal production. Although this technique is practical and effective, embryonic damage caused by electroporation treatment remains a major problem. This study was conducted to evaluate the optimal culture system for electroporation-treated porcine embryos by supplementation of chlorogenic acid (CGA), a potent antioxidant, during in vitro oocyte maturation. The oocytes were treated with various concentrations of CGA (0, 10, 50, and 100 μmol/L) through the duration of maturation for 44 hr. The treated oocytes were then fertilized, electroporated at 30 V/mm with five 1 msec unipolar pulses, and subsequently cultured in vitro until development into the blastocyst stage. Without electroporation, the treatment with 50 μmol/L CGA had useful effects on the maturation rate of oocytes, the total cell number, and the apoptotic nucleus indices of blastocysts. When the oocytes were electroporated after in vitro fertilization, the treatment with 50 μmol/L CGA supplementation significantly improved the rate of oocytes that developed into blastocysts and reduced the apoptotic nucleus indices (4.7% and 7.6, respectively) compared with those of the untreated group (1.4% and 13.0, respectively). These results suggested that supplementation with 50 μmol/L CGA during maturation improves porcine embryonic development and quality of electroporation-treated embryos.
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Affiliation(s)
- Thanh-Van Nguyen
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - Manita Wittayarat
- Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand
| | - Lanh Thi Kim Do
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan.,Faculty of Veterinary Science, Vietnam National University of Agriculture, Ha Noi, Vietnam
| | - Thanh Van Nguyen
- Faculty of Veterinary Science, Vietnam National University of Agriculture, Ha Noi, Vietnam
| | - Masahiro Nii
- Tokushima Prefectural Livestock Research Institute, Tokushima, Japan
| | - Zhao Namula
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan.,College of Agricultural Science, Guangdong Ocean University, Guangdong, China
| | - Toshiki Kunihara
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - Fuminori Tanihara
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - Maki Hirata
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
| | - Takeshige Otoi
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
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11
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Yang Y, Wu D, Liu D, Shi J, Zhou R, He X, Quan J, Cai G, Zheng E, Wu Z, Li Z. Mutation of the XIST
gene upregulates expression of X-linked genes but decreases the developmental rates of cloned male porcine embryos. Mol Reprod Dev 2017; 84:525-534. [DOI: 10.1002/mrd.22808] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 03/31/2017] [Indexed: 02/03/2023]
Affiliation(s)
- Yang Yang
- National Engineering Research Center for Breeding Swine Industry; College of Animal Science; South China Agricultural University; Guangzhou China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding; College of Animal Science; South China Agricultural University; Guangzhou China
| | - Dan Wu
- National Engineering Research Center for Breeding Swine Industry; College of Animal Science; South China Agricultural University; Guangzhou China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding; College of Animal Science; South China Agricultural University; Guangzhou China
| | - Dewu Liu
- National Engineering Research Center for Breeding Swine Industry; College of Animal Science; South China Agricultural University; Guangzhou China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding; College of Animal Science; South China Agricultural University; Guangzhou China
| | - Junsong Shi
- Guangdong Wen's Foodstuff Group Ltd.; Yunfu Guangdong China
| | - Rong Zhou
- Guangdong Wen's Foodstuff Group Ltd.; Yunfu Guangdong China
| | - Xiaoyan He
- Guangdong Wen's Foodstuff Group Ltd.; Yunfu Guangdong China
| | - Jianping Quan
- National Engineering Research Center for Breeding Swine Industry; College of Animal Science; South China Agricultural University; Guangzhou China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding; College of Animal Science; South China Agricultural University; Guangzhou China
| | - Gengyuan Cai
- National Engineering Research Center for Breeding Swine Industry; College of Animal Science; South China Agricultural University; Guangzhou China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding; College of Animal Science; South China Agricultural University; Guangzhou China
| | - Enqin Zheng
- National Engineering Research Center for Breeding Swine Industry; College of Animal Science; South China Agricultural University; Guangzhou China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding; College of Animal Science; South China Agricultural University; Guangzhou China
| | - Zhenfang Wu
- National Engineering Research Center for Breeding Swine Industry; College of Animal Science; South China Agricultural University; Guangzhou China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding; College of Animal Science; South China Agricultural University; Guangzhou China
| | - Zicong Li
- National Engineering Research Center for Breeding Swine Industry; College of Animal Science; South China Agricultural University; Guangzhou China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding; College of Animal Science; South China Agricultural University; Guangzhou China
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12
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Zeng F, Li Z, Cai G, Gao W, Jiang G, Liu D, Urschitz J, Moisyadi S, Wu Z. Characterization of Growth and Reproduction Performance, Transgene Integration, Expression, and Transmission Patterns in Transgenic Pigs Produced by piggyBac Transposition-Mediated Gene Transfer. Anim Biotechnol 2017; 27:245-55. [PMID: 27565868 DOI: 10.1080/10495398.2016.1178140] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Previously we successfully produced a group of EGFP-expressing founder transgenic pigs by a newly developed efficient and simple pig transgenesis method based on cytoplasmic injection of piggyBac plasmids. In this study, we investigated the growth and reproduction performance and characterized the transgene insertion, transmission, and expression patterns in transgenic pigs generated by piggyBac transposition. Results showed that transgene has no injurious effect on the growth and reproduction of transgenic pigs. Multiple copies of monogenic EGFP transgene were inserted at noncoding sequences of host genome, and passed from founder transgenic pigs to their transgenic offspring in segregation or linkage manner. The EGFP transgene was ubiquitously expressed in transgenic pigs, and its expression intensity was associated with transgene copy number but not related to its promoter DNA methylation level. To the best of our knowledge, this is first study that fully described the growth and reproduction performance, transgene insertion, expression, and transmission profiles in transgenic pigs produced by piggyBac system. It not only demonstrates that piggyBac transposition-mediated gene transfer is an effective and favorable approach for pig transgenesis, but also provides scientific information for understanding the transgene insertion, expression and transmission patterns in transgenic animals produced by piggyBac transposition.
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Affiliation(s)
- Fang Zeng
- a National Engineering Research Center for Breeding Swine Industry, College of Animal Science , South China Agricultural University , Guangzhou , China.,b Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science , South China Agricultural University , Guangzhou , China
| | - Zicong Li
- a National Engineering Research Center for Breeding Swine Industry, College of Animal Science , South China Agricultural University , Guangzhou , China.,b Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science , South China Agricultural University , Guangzhou , China
| | - Gengyuan Cai
- c Institute of Animal Science , Guangdong Academy of Agricultural Sciences , Guangzhou , China
| | - Wenchao Gao
- a National Engineering Research Center for Breeding Swine Industry, College of Animal Science , South China Agricultural University , Guangzhou , China.,b Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science , South China Agricultural University , Guangzhou , China
| | - Gelong Jiang
- a National Engineering Research Center for Breeding Swine Industry, College of Animal Science , South China Agricultural University , Guangzhou , China.,b Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science , South China Agricultural University , Guangzhou , China
| | - Dewu Liu
- a National Engineering Research Center for Breeding Swine Industry, College of Animal Science , South China Agricultural University , Guangzhou , China.,b Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science , South China Agricultural University , Guangzhou , China
| | - Johann Urschitz
- d Institute for Biogenesis Research, Department of Anatomy, Biochemistry and Physiology, John A. Burns School of Medicine , University of Hawaii at Manoa , Honolulu , Hawaii , USA
| | - Stefan Moisyadi
- d Institute for Biogenesis Research, Department of Anatomy, Biochemistry and Physiology, John A. Burns School of Medicine , University of Hawaii at Manoa , Honolulu , Hawaii , USA.,e Manoa BioSciences , Honolulu , Hawaii , USA
| | - Zhenfang Wu
- a National Engineering Research Center for Breeding Swine Industry, College of Animal Science , South China Agricultural University , Guangzhou , China.,b Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science , South China Agricultural University , Guangzhou , China
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13
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Zeng F, Li Z, Zhu Q, Dong R, Zhao C, Li G, Li G, Gao W, Jiang G, Zheng E, Cai G, Moisyadi S, Urschitz J, Yang H, Liu D, Wu Z. Production of functional human nerve growth factor from the saliva of transgenic mice by using salivary glands as bioreactors. Sci Rep 2017; 7:41270. [PMID: 28117418 PMCID: PMC5259756 DOI: 10.1038/srep41270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 12/20/2016] [Indexed: 01/01/2023] Open
Abstract
The salivary glands of animals have great potential to act as powerful bioreactors to produce human therapeutic proteins. Human nerve growth factor (hNGF) is an important pharmaceutical protein that is clinically effective in the treatment of many human neuronal and non-neuronal diseases. In this study, we generated 18 transgenic (TG) founder mice each carrying a salivary gland specific promoter-driven hNGF transgene. A TG mouse line secreting high levels of hNGF protein in its saliva (1.36 μg/mL) was selected. hNGF protein was successfully purified from the saliva of these TG mice and its identity was verified. The purified hNGF was highly functional as it displayed the ability to induce neuronal differentiation of PC12 cells. Furthermore, it strongly promoted proliferation of TF1 cells, above the levels observed with mouse NGF. Additionally, saliva collected from TG mice and containing unpurified hNGF was able to significantly enhance the growth of TF1 cells. This study not only provides a new and efficient approach for the synthesis of therapeutic hNGF but also supports the concept that salivary gland from TG animals is an efficient system for production of valuable foreign proteins.
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Affiliation(s)
- Fang Zeng
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Zicong Li
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Qingchun Zhu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Rui Dong
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Chengcheng Zhao
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Guoling Li
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Guo Li
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Wenchao Gao
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Gelong Jiang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Enqin Zheng
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Gengyuan Cai
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Stefan Moisyadi
- Institute for Biogenesis Research, Department of Anatomy, Biochemistry and Physiology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, 96822, USA
- Manoa BioSciences, 1717 Mott-Smith Dr. #3213, Honolulu, 96822, USA
| | - Johann Urschitz
- Institute for Biogenesis Research, Department of Anatomy, Biochemistry and Physiology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, 96822, USA
| | - Huaqiang Yang
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Dewu Liu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Zhenfang Wu
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
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14
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Sato M, Maeda K, Koriyama M, Inada E, Saitoh I, Miura H, Ohtsuka M, Nakamura S, Sakurai T, Watanabe S, Miyoshi K. The piggyBac-Based Gene Delivery System Can Confer Successful Production of Cloned Porcine Blastocysts with Multigene Constructs. Int J Mol Sci 2016; 17:E1424. [PMID: 27589724 PMCID: PMC5037703 DOI: 10.3390/ijms17091424] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 08/06/2016] [Accepted: 08/19/2016] [Indexed: 01/02/2023] Open
Abstract
The introduction of multigene constructs into single cells is important for improving the performance of domestic animals, as well as understanding basic biological processes. In particular, multigene constructs allow the engineering and integration of multiple genes related to xenotransplantation into the porcine genome. The piggyBac (PB) transposon system allows multiple genes to be stably integrated into target genomes through a single transfection event. However, to our knowledge, no attempt to introduce multiple genes into a porcine genome has been made using this system. In this study, we simultaneously introduced seven transposons into a single porcine embryonic fibroblast (PEF). PEFs were transfected with seven transposons containing genes for five drug resistance proteins and two (red and green) fluorescent proteins, together with a PB transposase expression vector, pTrans (experimental group). The above seven transposons (without pTrans) were transfected concomitantly (control group). Selection of these transfected cells in the presence of multiple selection drugs resulted in the survival of several clones derived from the experimental group, but not from the control. PCR analysis demonstrated that approximately 90% (12/13 tested) of the surviving clones possessed all of the introduced transposons. Splinkerette PCR demonstrated that the transposons were inserted through the TTAA target sites of PB. Somatic cell nuclear transfer (SCNT) using a PEF clone with multigene constructs demonstrated successful production of cloned blastocysts expressing both red and green fluorescence. These results indicate the feasibility of this PB-mediated method for simultaneous transfer of multigene constructs into the porcine cell genome, which is useful for production of cloned transgenic pigs expressing multiple transgenes.
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Affiliation(s)
- Masahiro Sato
- Section of Gene Expression Regulation, Frontier Science Research Center, Kagoshima University, Kagoshima 890-8544, Japan.
| | - Kosuke Maeda
- Laboratory of Animal Reproduction, Faculty of Agriculture, Kagoshima University, Kagoshima 890-0065, Japan.
| | - Miyu Koriyama
- Laboratory of Animal Reproduction, Faculty of Agriculture, Kagoshima University, Kagoshima 890-0065, Japan.
| | - Emi Inada
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan.
| | - Issei Saitoh
- Division of Pediatric Dentistry, Department of Oral Health Sciences, Course for Oral Life Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan.
| | - Hiromi Miura
- Department of Regenerative Medicine, Basic Medical Science, School of Medicine, Tokai University, Kanagawa 259-1193, Japan.
| | - Masato Ohtsuka
- Division of Basic Molecular Science and Molecular Medicine, School of Medicine, Tokai University, Kanagawa 259-1193, Japan.
- The Institute of Medical Sciences, Tokai University, Kanagawa 259-1193, Japan.
| | - Shingo Nakamura
- Division of Biomedical Engineering, National Defense Medical College Research Institute, Saitama 359-8513, Japan.
| | - Takayuki Sakurai
- Department of Cardiovascular Research, Graduate school of Medicine, Shinshu University, Nagano 390-8621, Japan.
| | - Satoshi Watanabe
- Animal Genome Research Unit, Division of Animal Science, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan.
| | - Kazuchika Miyoshi
- Laboratory of Animal Reproduction, Faculty of Agriculture, Kagoshima University, Kagoshima 890-0065, Japan.
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15
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Zeng F, Huang Z, Yuan Y, Shi J, Cai G, Liu D, Wu Z, Li Z. Effects of RNAi-mediated knockdown of Xist on the developmental efficiency of cloned male porcine embryos. J Reprod Dev 2016; 62:591-597. [PMID: 27569767 PMCID: PMC5177977 DOI: 10.1262/jrd.2016-095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Xist is an X-linked gene responsible for cis induction of X chromosome inactivation. Studies have indicated that Xist is abnormally activated in the active X chromosome in cloned mouse embryos due to loss of the maternal Xist-repressing imprint following enucleation during somatic cell nuclear transfer (SCNT). Inhibition of Xist expression by injecting small interfering RNA (siRNA) has been shown to enhance the in vivo developmental efficiency of cloned male mouse embryos by more than 10-fold. The purpose of this study was to investigate whether a similar procedure can be applied to improve the cloning efficiency in pigs. We first found that Xist mRNA levels at the morula stage were aberrantly higher in pig SCNT embryos than in in vivo fertilization-derived pig embryos. Injection of a preselected effective anti-Xist siRNA into 1-cell-stage male pig SCNT embryos resulted in significant inhibition of Xist expression through the 16-cell stage. This siRNA-mediated inhibition of Xist significantly increased the total cell number per cloned blastocyst and significantly improved the birth rate of cloned healthy piglets. The present study contributes useful information on the action of Xist in the development of pig SCNT embryos and proposes a new method for enhancing the efficiency of pig cloning.
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Affiliation(s)
- Fang Zeng
- National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangdong 510642, P. R. China
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16
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Luchetti CG, Bevacqua RJ, Lorenzo MS, Tello MF, Willis M, Buemo CP, Lombardo DM, Salamone DF. Vesicles Cytoplasmic Injection: An Efficient Technique to Produce Porcine Transgene-Expressing Embryos. Reprod Domest Anim 2016; 51:501-8. [PMID: 27260090 DOI: 10.1111/rda.12708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 04/14/2016] [Indexed: 11/30/2022]
Abstract
The use of vesicles co-incubated with plasmids showed to improve the efficiency of cytoplasmic injection of transgenes in cattle. Here, this technique was tested as a simplified alternative for transgenes delivery in porcine zygotes. To this aim, cytoplasmic injection of the plasmid alone was compared to the injection with plasmids co-incubated with vesicles both in diploid parthenogenic and IVF zygotes. The plasmid pcx-egfp was injected circular (CP) at 3, 30 and 300 ng/μl and linear (LP) at 30 ng/μl. The experimental groups using parthenogenetic zygotes were as follows: CP naked at 3 ng/μl (N = 105), 30 ng/μl (N = 95) and 300 ng/μl (N = 65); Sham (N = 105); control not injected (N = 223); LP naked at 30 ng/μl (N = 78); LP vesicles (N = 115) and Sham vesicles (N = 59). For IVF zygotes: LP naked (N = 44) LP vesicles (N = 94), Sham (N = 59) and control (N = 79). Cleavage, blastocyst and GFP+ rates were analysed by Fisher's test (p < 0.05). The parthenogenic CP naked group showed lower cleavage respect to control (p < 0.05). The highest concentration of plasmids to allow development to blastocyst stage was 30 ng/μl. There were no differences in DNA fragmentation between groups. The parthenogenic LP naked group resulted in high GFP rates (46%) and also allowed the production of GFP blastocysts (33%). The cytoplasmic injection with LP vesicles into parthenogenic zygotes allowed 100% GFP blastocysts. Injected IVF showed higher cleavage rates than control (p < 0.05). In IVF zygotes, only the use of vesicles produced GFP blastocysts. The use of vesicles co-incubated with plasmids improves the transgene expression efficiency for cytoplasmic injection in porcine zygotes and constitutes a simple technique for easy delivery of plasmids.
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Affiliation(s)
- C G Luchetti
- Cátedra de Histología y Embriología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - R J Bevacqua
- Laboratorio de Biotecnología Animal, Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - M S Lorenzo
- Cátedra de Histología y Embriología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - M F Tello
- Cátedra de Histología y Embriología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - M Willis
- Centro de Estudios Biomedicos, Biotecnologicos, Ambientales y Diagnostico (CEBBAD), Universidad Maimonides, Ciudad Autónoma de Buenos Aires, Argentina
| | - C P Buemo
- Laboratorio de Biotecnología Animal, Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - D M Lombardo
- Cátedra de Histología y Embriología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - D F Salamone
- Laboratorio de Biotecnología Animal, Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
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17
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Alessio AP, Fili AE, Garrels W, Forcato DO, Olmos Nicotra MF, Liaudat AC, Bevacqua RJ, Savy V, Hiriart MI, Talluri TR, Owens JB, Ivics Z, Salamone DF, Moisyadi S, Kues WA, Bosch P. Establishment of cell-based transposon-mediated transgenesis in cattle. Theriogenology 2015; 85:1297-311.e2. [PMID: 26838464 DOI: 10.1016/j.theriogenology.2015.12.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/10/2015] [Accepted: 12/18/2015] [Indexed: 12/15/2022]
Abstract
Transposon-mediated transgenesis is a well-established tool for genome modification in small animal models. However, translation of this active transgenic method to large animals warrants further investigations. Here, the piggyBac (PB) and sleeping beauty (SB) transposon systems were assessed for stable gene transfer into the cattle genome. Bovine fibroblasts were transfected either with a helper-independent PB system or a binary SB system. Both transposons were highly active in bovine cells increasing the efficiency of DNA integration up to 88 times over basal nonfacilitated integrations in a colony formation assay. SB transposase catalyzed multiplex transgene integrations in fibroblast cells transfected with the helper vector and two donor vectors carrying different transgenes (fluorophore and neomycin resistance). Stably transfected fibroblasts were used for SCNT and on in vitro embryo culture, morphologically normal blastocysts that expressed the fluorophore were obtained with both transposon systems. The data indicate that transposition is a feasible approach for genetic engineering in the cattle genome.
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Affiliation(s)
- Ana P Alessio
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, República Argentina
| | - Alejandro E Fili
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, República Argentina
| | - Wiebke Garrels
- Department of Biotechnology, Friedrich-Loeffler-Institut, Institut für Nutztiergenetik, Neustadt, Germany
| | - Diego O Forcato
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, República Argentina
| | - María F Olmos Nicotra
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, República Argentina
| | - Ana C Liaudat
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, República Argentina
| | - Romina J Bevacqua
- Laboratorio de Biotecnología Animal, Departamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, República Argentina
| | - Virginia Savy
- Laboratorio de Biotecnología Animal, Departamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, República Argentina
| | - María I Hiriart
- Laboratorio de Biotecnología Animal, Departamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, República Argentina
| | - Thirumala R Talluri
- Department of Biotechnology, Friedrich-Loeffler-Institut, Institut für Nutztiergenetik, Neustadt, Germany
| | - Jesse B Owens
- Department of Anatomy, Biochemistry and Physiology, Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Zoltán Ivics
- Division of Medical Biotechnology, Paul-Ehrlich-Institute, Langen, Germany
| | - Daniel F Salamone
- Laboratorio de Biotecnología Animal, Departamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, República Argentina
| | - Stefan Moisyadi
- Department of Anatomy, Biochemistry and Physiology, Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Wilfried A Kues
- Department of Biotechnology, Friedrich-Loeffler-Institut, Institut für Nutztiergenetik, Neustadt, Germany
| | - Pablo Bosch
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, República Argentina.
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18
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Davy PM, Lye KD, Mathews J, Owens JB, Chow AY, Wong L, Moisyadi S, Allsopp RC. Human adipose stem cell and ASC-derived cardiac progenitor cellular therapy improves outcomes in a murine model of myocardial infarction. STEM CELLS AND CLONING-ADVANCES AND APPLICATIONS 2015; 8:135-48. [PMID: 26604802 PMCID: PMC4631407 DOI: 10.2147/sccaa.s86925] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND Adipose tissue is an abundant and potent source of adult stem cells for transplant therapy. In this study, we present our findings on the potential application of adipose-derived stem cells (ASCs) as well as induced cardiac-like progenitors (iCPs) derived from ASCs for the treatment of myocardial infarction. METHODS AND RESULTS Human bone marrow (BM)-derived stem cells, ASCs, and iCPs generated from ASCs using three defined cardiac lineage transcription factors were assessed in an immune-compromised mouse myocardial infarction model. Analysis of iCP prior to transplant confirmed changes in gene and protein expression consistent with a cardiac phenotype. Endpoint analysis was performed 1 month posttransplant. Significantly increased endpoint fractional shortening, as well as reduction in the infarct area at risk, was observed in recipients of iCPs as compared to the other recipient cohorts. Both recipients of iCPs and ASCs presented higher myocardial capillary densities than either recipients of BM-derived stem cells or the control cohort. Furthermore, mice receiving iCPs had a significantly higher cardiac retention of transplanted cells than all other groups. CONCLUSION Overall, iCPs generated from ASCs outperform BM-derived stem cells and ASCs in facilitating recovery from induced myocardial infarction in mice.
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Affiliation(s)
- Philip Mc Davy
- Institute for Biogenesis Research, University of Hawaii at Mānoa, Honolulu, HI, USA
| | - Kevin D Lye
- John A. Burns School of Medicine, University of Hawaii at Mānoa, Honolulu, HI, USA ; Tissue Genesis, Inc., Honolulu, HI, USA
| | - Juanita Mathews
- Institute for Biogenesis Research, University of Hawaii at Mānoa, Honolulu, HI, USA
| | - Jesse B Owens
- Institute for Biogenesis Research, University of Hawaii at Mānoa, Honolulu, HI, USA
| | - Alice Y Chow
- Institute for Biogenesis Research, University of Hawaii at Mānoa, Honolulu, HI, USA
| | - Livingston Wong
- John A. Burns School of Medicine, University of Hawaii at Mānoa, Honolulu, HI, USA
| | - Stefan Moisyadi
- Institute for Biogenesis Research, University of Hawaii at Mānoa, Honolulu, HI, USA
| | - Richard C Allsopp
- Institute for Biogenesis Research, University of Hawaii at Mānoa, Honolulu, HI, USA
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19
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Meng F, Li H, Wang X, Qin G, Oback B, Shi D. Optimized production of transgenic buffalo embryos and offspring by cytoplasmic zygote injection. J Anim Sci Biotechnol 2015; 6:44. [PMID: 26500768 PMCID: PMC4617447 DOI: 10.1186/s40104-015-0044-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 09/29/2015] [Indexed: 12/05/2022] Open
Abstract
Background Cytoplasmic injection of exogenous DNA into zygotes is a promising technique to generate transgenic livestock. However, it is still relatively inefficient and has not yet been demonstrated to work in buffalo. We sought to improve two key technical parameters of the procedure, namely i) how much linear DNA to inject and ii) when to inject it. For this, we introduced a constitutively expressed enhanced green fluorescent protein (EGFP) plasmid into buffalo zygotes. Results First, we found that the proportion of EGFP-expressing blastocysts derived from zygotes injected with 20 or 50 ng/μL DNA was significantly higher than from those injected with 5 μg/mL. However, 50 ng/μL exogenous DNA compromised blastocyst development compared to non-injected IVF controls. Therefore the highest net yield of EGFP-positive blastocysts was achieved at 20 ng/μL DNA. Second, zygotes injected early (7–8 h post-insemination [hpi]) developed better than those injected at mid (12–13 hpi) or late (18–19 hpi) time points. Blastocysts derived from early injections were also more frequently EGFP-positive. As a consequence, the net yield of EGFP-expressing blastocysts was more than doubled using early vs late injections (16.4 % vs 7.7 %). With respect to blastocyst quality, we found no significant difference in cell numbers of EGFP-positive blastocysts vs non-injected blastocysts. Following embryo transfer of six EGFP-positive blastocysts into four recipient animals, two viable buffalo calves were born. Biopsied ear tissues from both buffalo calves were analyzed for transgene presence and expression by Southern blot, PCR and confocal laser scanning microscopy, respectively. This confirmed that both calves were transgenic. Conclusions Our cytoplasmic injection protocol improved generation of transgenic embryos and resulted in the first transgenic buffalo calves produced by this method.
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Affiliation(s)
- Fanli Meng
- Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, 75 Xiuling Road, Nanning, 530005 P.R China ; Present address: AgResearch Ltd., Ruakura Research Centre, Reproductive Technologies, 10 Bisley Road, Private Bag 3123, Hamilton, New Zealand
| | - Hui Li
- Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, 75 Xiuling Road, Nanning, 530005 P.R China
| | - Xiaoli Wang
- Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, 75 Xiuling Road, Nanning, 530005 P.R China
| | - Guangsheng Qin
- Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, 75 Xiuling Road, Nanning, 530005 P.R China
| | - Björn Oback
- Present address: AgResearch Ltd., Ruakura Research Centre, Reproductive Technologies, 10 Bisley Road, Private Bag 3123, Hamilton, New Zealand
| | - Deshun Shi
- Animal Reproduction Institute, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, 75 Xiuling Road, Nanning, 530005 P.R China
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20
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Abstract
DNA transposons offer an efficient nonviral method of permanently modifying the genomes of mammalian cells. The piggyBac transposon system has proven effective in genomic engineering of mammalian cells for preclinical applications, including gene discovery, simultaneous multiplexed genome modification, animal transgenesis, gene transfer in vivo achieving long-term gene expression in animals, and the genetic modification of clinically relevant cell types, such as induced pluripotent stem cells and human T lymphocytes. piggyBac has many desirable features, including seamless excision of transposons from the genomic DNA and the potential to target integration events to desired DNA sequences. In this review, we explore these recent applications and also highlight the unique advantages of using piggyBac for developing new molecular therapeutic strategies.
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Affiliation(s)
- Lauren E Woodard
- Department of Veterans Affairs, Tennessee Valley Health System, Nashville, TN, USA; Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Matthew H Wilson
- Department of Veterans Affairs, Tennessee Valley Health System, Nashville, TN, USA; Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN, USA.
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21
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Bosch P, Forcato DO, Alustiza FE, Alessio AP, Fili AE, Olmos Nicotra MF, Liaudat AC, Rodríguez N, Talluri TR, Kues WA. Exogenous enzymes upgrade transgenesis and genetic engineering of farm animals. Cell Mol Life Sci 2015; 72:1907-29. [PMID: 25636347 PMCID: PMC11114025 DOI: 10.1007/s00018-015-1842-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/15/2015] [Accepted: 01/16/2015] [Indexed: 01/14/2023]
Abstract
Transgenic farm animals are attractive alternative mammalian models to rodents for the study of developmental, genetic, reproductive and disease-related biological questions, as well for the production of recombinant proteins, or the assessment of xenotransplants for human patients. Until recently, the ability to generate transgenic farm animals relied on methods of passive transgenesis. In recent years, significant improvements have been made to introduce and apply active techniques of transgenesis and genetic engineering in these species. These new approaches dramatically enhance the ease and speed with which livestock species can be genetically modified, and allow to performing precise genetic modifications. This paper provides a synopsis of enzyme-mediated genetic engineering in livestock species covering the early attempts employing naturally occurring DNA-modifying proteins to recent approaches working with tailored enzymatic systems.
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Affiliation(s)
- Pablo Bosch
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Diego O. Forcato
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Fabrisio E. Alustiza
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Ana P. Alessio
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Alejandro E. Fili
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - María F. Olmos Nicotra
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Ana C. Liaudat
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Nancy Rodríguez
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Fco-Qcas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba Republic of Argentina
| | - Thirumala R. Talluri
- Friedrich-Loeffler-Institute, Institute of Farm Animal Genetics, Biotechnology, 31535 Neustadt, Germany
| | - Wilfried A. Kues
- Friedrich-Loeffler-Institute, Institute of Farm Animal Genetics, Biotechnology, 31535 Neustadt, Germany
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22
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Laible G, Wei J, Wagner S. Improving livestock for agriculture - technological progress from random transgenesis to precision genome editing heralds a new era. Biotechnol J 2014; 10:109-20. [DOI: 10.1002/biot.201400193] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 11/04/2014] [Accepted: 11/24/2014] [Indexed: 12/17/2022]
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23
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Talluri TR, Kumar D, Glage S, Garrels W, Ivics Z, Debowski K, Behr R, Kues WA. Non-viral reprogramming of fibroblasts into induced pluripotent stem cells by Sleeping Beauty and piggyBac transposons. Biochem Biophys Res Commun 2014; 450:581-7. [PMID: 24928388 DOI: 10.1016/j.bbrc.2014.06.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 06/03/2014] [Indexed: 12/28/2022]
Abstract
The generation of induced pluripotent stem (iPS) cells represents a promising approach for innovative cell therapies. The original method requires viral transduction of several reprogramming factors, which may be associated with an increased risk of tumorigenicity. Transposition of reprogramming cassettes represents a recent alternative to viral approaches. Since binary transposons can be produced as common plasmids they provide a safe and cost-efficient alternative to viral delivery methods. Here, we compared the efficiency of two different transposon systems, Sleeping Beauty (SB) and piggyBac (PB), for the generation of murine iPS. Murine fibroblasts derived from an inbred BL/6 mouse line carrying a pluripotency reporter, Oct4-EGFP, and fibroblasts derived from outbred NMRI mice were employed for reprogramming. Both transposon systems resulted in the successful isolation of murine iPS cell lines. The reduction of the core reprogramming factors to omit the proto-oncogene c-Myc was compatible with iPS cell line derivation, albeit with reduced reprogramming efficiencies. The transposon-derived iPS cells featured typical hallmarks of pluripotency, including teratoma growth in immunodeficient mice. Thus SB and PB transposons represent a promising non-viral approach for iPS cell derivation.
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Affiliation(s)
- Thirumala R Talluri
- Friedrich-Loeffler-Institut, Institut für Nutztiergenetik, Neustadt, Germany; National Research Center on Equines, Hisar, India
| | - Dharmendra Kumar
- Friedrich-Loeffler-Institut, Institut für Nutztiergenetik, Neustadt, Germany; Central Institute for Research on Buffaloes, Hisar, India
| | | | | | | | | | | | - Wilfried A Kues
- Friedrich-Loeffler-Institut, Institut für Nutztiergenetik, Neustadt, Germany.
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