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Salama II, Sami SM, Salama SI, Abdel-Latif GA, Shaaban FA, Fouad WA, Abdelmohsen AM, Raslan HM. Current and novel modalities for management of chronic hepatitis B infection. World J Hepatol 2023; 15:585-608. [PMID: 37305370 PMCID: PMC10251278 DOI: 10.4254/wjh.v15.i5.585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 03/13/2023] [Accepted: 04/12/2023] [Indexed: 05/24/2023] Open
Abstract
Over 296 million people are estimated to have chronic hepatitis B viral infection (CHB), and it poses unique challenges for elimination. CHB is the result of hepatitis B virus (HBV)-specific immune tolerance and the presence of covalently closed circular DNA as mini chromosome inside the nucleus and the integrated HBV. Serum hepatitis B core-related antigen is the best surrogate marker for intrahepatic covalently closed circular DNA. Functional HBV “cure” is the durable loss of hepatitis B surface antigen (HBsAg), with or without HBsAg seroconversion and undetectable serum HBV DNA after completing a course of treatment. The currently approved therapies are nucleos(t)ide analogues, interferon-alpha, and pegylated-interferon. With these therapies, functional cure can be achieved in < 10% of CHB patients. Any variation to HBV or the host immune system that disrupts the interaction between them can lead to reactivation of HBV. Novel therapies may allow efficient control of CHB. They include direct acting antivirals and immunomodulators. Reduction of the viral antigen load is a crucial factor for success of immune-based therapies. Immunomodulatory therapy may lead to modulation of the host immune system. It may enhance/restore innate immunity against HBV (as toll-like-receptors and cytosolic retinoic acid inducible gene I agonist). Others may induce adaptive immunity as checkpoint inhibitors, therapeutic HBV vaccines including protein (HBsAg/preS and hepatitis B core antigen), monoclonal or bispecific antibodies and genetically engineered T cells to generate chimeric antigen receptor-T or T-cell receptor-T cells and HBV-specific T cells to restore T cell function to efficiently clear HBV. Combined therapy may successfully overcome immune tolerance and lead to HBV control and cure. Immunotherapeutic approaches carry the risk of overshooting immune responses causing uncontrolled liver damage. The safety of any new curative therapies should be measured in relation to the excellent safety of currently approved nucleos(t)ide analogues. Development of novel antiviral and immune modulatory therapies should be associated with new diagnostic assays used to evaluate the effectiveness or to predict response.
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Affiliation(s)
- Iman Ibrahim Salama
- Department of Community Medicine Research, National Research Centre, Giza 12411, Dokki, Egypt
| | - Samia M Sami
- Department of Child Health, National Research Centre, Giza 12411, Dokki, Egypt
| | - Somaia I Salama
- Department of Community Medicine Research, National Research Centre, Giza 12411, Dokki, Egypt
| | - Ghada A Abdel-Latif
- Department of Community Medicine Research, National Research Centre, Giza 12411, Dokki, Egypt
| | - Fatma A Shaaban
- Department of Child Health, National Research Centre, Giza 12411, Dokki, Egypt
| | - Walaa A Fouad
- Department of Community Medicine Research, National Research Centre, Giza 12411, Dokki, Egypt
| | - Aida M Abdelmohsen
- Department of Community Medicine Research, National Research Centre, Giza 12411, Dokki, Egypt
| | - Hala M Raslan
- Department of Internal Medicine, National Research Centre, Giza 12411, Dokki, Egypt
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2
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Kalds P, Zhou S, Huang S, Gao Y, Wang X, Chen Y. When Less Is More: Targeting the Myostatin Gene in Livestock for Augmenting Meat Production. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:4216-4227. [PMID: 36862946 DOI: 10.1021/acs.jafc.2c08583] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
How to increase meat production is one of the main questions in animal breeding. Selection for improved body weight has been made and, due to recent genomic advances, naturally occurring variants that are responsible for controlling economically relevant phenotypes have been revealed. The myostatin (MSTN) gene, a superstar gene in animal breeding, was discovered as a negative controller of muscle mass. In some livestock species, natural mutations in the MSTN gene could generate the agriculturally desirable double-muscling phenotype. However, some other livestock species or breeds lack these desirable variants. Genetic modification, particularly gene editing, offers an unprecedented opportunity to induce or mimic naturally occurring mutations in livestock genomes. To date, various MSTN-edited livestock species have been generated using different gene modification tools. These MSTN gene-edited models have higher growth rates and increased muscle mass, suggesting the high potential of utilizing MSTN gene editing in animal breeding. Additionally, post-editing investigations in most livestock species support the favorable influence of targeting the MSTN gene on meat quantity and quality. In this Review, we provide a collective discussion on targeting the MSTN gene in livestock to further encourage its utilization opportunities. It is expected that, shortly, MSTN gene-edited livestock will be commercialized, and MSTN-edited meat will be on the tables of ordinary customers.
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Affiliation(s)
- Peter Kalds
- International Joint Agriculture Research Center for Animal Bio-Breeding, Ministry of Agriculture and Rural Affairs/Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
- Department of Animal and Poultry Production, Faculty of Environmental Agricultural Sciences, Arish University, El-Arish 45511, Egypt
| | - Shiwei Zhou
- International Joint Agriculture Research Center for Animal Bio-Breeding, Ministry of Agriculture and Rural Affairs/Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Shuhong Huang
- International Joint Agriculture Research Center for Animal Bio-Breeding, Ministry of Agriculture and Rural Affairs/Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Yawei Gao
- International Joint Agriculture Research Center for Animal Bio-Breeding, Ministry of Agriculture and Rural Affairs/Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Xiaolong Wang
- International Joint Agriculture Research Center for Animal Bio-Breeding, Ministry of Agriculture and Rural Affairs/Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling 712100, China
| | - Yulin Chen
- International Joint Agriculture Research Center for Animal Bio-Breeding, Ministry of Agriculture and Rural Affairs/Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling 712100, China
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Yamashita MS, Melo EO. Animal Transgenesis and Cloning: Combined Development and Future Perspectives. Methods Mol Biol 2023; 2647:121-149. [PMID: 37041332 DOI: 10.1007/978-1-0716-3064-8_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
The revolution in animal transgenesis began in 1981 and continues to become more efficient, cheaper, and faster to perform. New genome editing technologies, especially CRISPR-Cas9, are leading to a new era of genetically modified or edited organisms. Some researchers advocate this new era as the time of synthetic biology or re-engineering. Nonetheless, we are witnessing advances in high-throughput sequencing, artificial DNA synthesis, and design of artificial genomes at a fast pace. These advances in symbiosis with animal cloning by somatic cell nuclear transfer (SCNT) allow the development of improved livestock, animal models of human disease, and heterologous production of bioproducts for medical applications. In the context of genetic engineering, SCNT remains a useful technology to generate animals from genetically modified cells. This chapter addresses these fast-developing technologies driving this biotechnological revolution and their association with animal cloning technology.
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Affiliation(s)
- Melissa S Yamashita
- Embrapa Genetic Resources and Biotechnology, Brasília, Distrito Federal, Brazil
- Graduation Program in Animal Biology, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Eduardo O Melo
- Embrapa Genetic Resources and Biotechnology, Brasília, Distrito Federal, Brazil.
- Graduation Program in Biotechnology, University of Tocantins, Gurupi, Tocantins, Brazil.
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Wani AK, Akhtar N, Singh R, Prakash A, Raza SHA, Cavalu S, Chopra C, Madkour M, Elolimy A, Hashem NM. Genome centric engineering using ZFNs, TALENs and CRISPR-Cas9 systems for trait improvement and disease control in Animals. Vet Res Commun 2023; 47:1-16. [PMID: 35781172 DOI: 10.1007/s11259-022-09967-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/24/2022] [Indexed: 01/27/2023]
Abstract
Livestock is an essential life commodity in modern agriculture involving breeding and maintenance. The farming practices have evolved mainly over the last century for commercial outputs, animal welfare, environment friendliness, and public health. Modifying genetic makeup of livestock has been proposed as an effective tool to create farmed animals with characteristics meeting modern farming system goals. The first technique used to produce transgenic farmed animals resulted in random transgene insertion and a low gene transfection rate. Therefore, genome manipulation technologies have been developed to enable efficient gene targeting with a higher accuracy and gene stability. Genome editing (GE) with engineered nucleases-Zinc finger nucleases (ZFNs) and transcription activator-like effector nucleases (TALENs) regulates the targeted genetic alterations to facilitate multiple genomic modifications through protein-DNA binding. The application of genome editors indicates usefulness in reproduction, animal models, transgenic animals, and cell lines. Recently, CRISPR/Cas system, an RNA-dependent genome editing tool (GET), is considered one of the most advanced and precise GE techniques for on-target modifications in the mammalian genome by mediating knock-in (KI) and knock-out (KO) of several genes. Lately, CRISPR/Cas9 tool has become the method of choice for genome alterations in livestock species due to its efficiency and specificity. The aim of this review is to discuss the evolution of engineered nucleases and GETs as a powerful tool for genome manipulation with special emphasis on its applications in improving economic traits and conferring resistance to infectious diseases of animals used for food production, by highlighting the recent trends for maintaining sustainable livestock production.
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Affiliation(s)
- Atif Khurshid Wani
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Nahid Akhtar
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Reena Singh
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Ajit Prakash
- Department of Biochemistry and Biophysics, University of North Carolina, 120 Mason Farm Road, CB# 7260, 3093 Genetic Medicine, Chapel Hill, NC, 27599-2760, USA
| | - Sayed Haidar Abbas Raza
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Simona Cavalu
- Faculty of Medicine and Pharmacy, University of Oradea, P -ta 1Decembrie 10, 410073, Oradea, Romania
| | - Chirag Chopra
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Mahmoud Madkour
- Animal Production Department, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Ahmed Elolimy
- Animal Production Department, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Nesrein M Hashem
- Department of Animal and Fish Production, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria, 21545, Egypt.
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Hawsawi YM, Shams A, Theyab A, Siddiqui J, Barnawee M, Abdali WA, Marghalani NA, Alshelali NH, Al-Sayed R, Alzahrani O, Alqahtani A, Alsulaiman AM. The State-of-the-Art of Gene Editing and its Application to Viral Infections and Diseases Including COVID-19. Front Cell Infect Microbiol 2022; 12:869889. [PMID: 35782122 PMCID: PMC9241565 DOI: 10.3389/fcimb.2022.869889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 05/09/2022] [Indexed: 11/26/2022] Open
Abstract
Gene therapy delivers a promising hope to cure many diseases and defects. The discovery of gene-editing technology fueled the world with valuable tools that have been employed in various domains of science, medicine, and biotechnology. Multiple means of gene editing have been established, including CRISPR/Cas, ZFNs, and TALENs. These strategies are believed to help understand the biological mechanisms of disease progression. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been designated the causative virus for coronavirus disease 2019 (COVID-19) that emerged at the end of 2019. This viral infection is a highly pathogenic and transmissible disease that caused a public health pandemic. As gene editing tools have shown great success in multiple scientific and medical areas, they could eventually contribute to discovering novel therapeutic and diagnostic strategies to battle the COVID-19 pandemic disease. This review aims to briefly highlight the history and some of the recent advancements of gene editing technologies. After that, we will describe various biological features of the CRISPR-Cas9 system and its diverse implications in treating different infectious diseases, both viral and non-viral. Finally, we will present current and future advancements in combating COVID-19 with a potential contribution of the CRISPR system as an antiviral modality in this battle.
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Affiliation(s)
- Yousef M. Hawsawi
- Research Center, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
- College of Medicine, Al-Faisal University, Riyadh, Saudi Arabia
| | - Anwar Shams
- Department of Pharmacology, College of Medicine, Taif University, Mecca, Saudi Arabia
| | - Abdulrahman Theyab
- College of Medicine, Al-Faisal University, Riyadh, Saudi Arabia
- Department of Laboratory & Blood Bank, Security Forces Hospital, Mecca, Saudi Arabia
| | - Jumana Siddiqui
- Research Center, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Mawada Barnawee
- Research Center, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Wed A. Abdali
- Research Center, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Nada A. Marghalani
- Research Center, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Nada H. Alshelali
- Research Center, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Rawan Al-Sayed
- Research Center, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Othman Alzahrani
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
- Genome and Biotechnology Unit, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Alanoud Alqahtani
- Bristol Medical School, Faculty of Health Sciences, University of Bristol, Bristol, United Kingdom
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Kalds P, Zhou S, Cai B, Liu J, Wang Y, Petersen B, Sonstegard T, Wang X, Chen Y. Sheep and Goat Genome Engineering: From Random Transgenesis to the CRISPR Era. Front Genet 2019; 10:750. [PMID: 31552084 PMCID: PMC6735269 DOI: 10.3389/fgene.2019.00750] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/17/2019] [Indexed: 12/16/2022] Open
Abstract
Sheep and goats are valuable livestock species that have been raised for their production of meat, milk, fiber, and other by-products. Due to their suitable size, short gestation period, and abundant secretion of milk, sheep and goats have become important model animals in agricultural, pharmaceutical, and biomedical research. Genome engineering has been widely applied to sheep and goat research. Pronuclear injection and somatic cell nuclear transfer represent the two primary procedures for the generation of genetically modified sheep and goats. Further assisted tools have emerged to enhance the efficiency of genetic modification and to simplify the generation of genetically modified founders. These tools include sperm-mediated gene transfer, viral vectors, RNA interference, recombinases, transposons, and endonucleases. Of these tools, the four classes of site-specific endonucleases (meganucleases, ZFNs, TALENs, and CRISPRs) have attracted wide attention due to their DNA double-strand break-inducing role, which enable desired DNA modifications based on the stimulation of native cellular DNA repair mechanisms. Currently, CRISPR systems dominate the field of genome editing. Gene-edited sheep and goats, generated using these tools, provide valuable models for investigations on gene functions, improving animal breeding, producing pharmaceuticals in milk, improving animal disease resistance, recapitulating human diseases, and providing hosts for the growth of human organs. In addition, more promising derivative tools of CRISPR systems have emerged such as base editors which enable the induction of single-base alterations without any requirements for homology-directed repair or DNA donor. These precise editors are helpful for revealing desirable phenotypes and correcting genetic diseases controlled by single bases. This review highlights the advances of genome engineering in sheep and goats over the past four decades with particular emphasis on the application of CRISPR/Cas9 systems.
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Affiliation(s)
- Peter Kalds
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
- Department of Animal and Poultry Production, Faculty of Environmental Agricultural Sciences, Arish University, El-Arish, Egypt
| | - Shiwei Zhou
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Bei Cai
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Jiao Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Ying Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Bjoern Petersen
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt, Germany
| | | | - Xiaolong Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Yulin Chen
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
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Knowlton MN, Smith CL. Naming CRISPR alleles: endonuclease-mediated mutation nomenclature across species. Mamm Genome 2017; 28:367-376. [PMID: 28589392 PMCID: PMC5569137 DOI: 10.1007/s00335-017-9698-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 05/27/2017] [Indexed: 12/29/2022]
Abstract
The widespread use of CRISPR/Cas and other targeted endonuclease technologies in many species has led to an explosion in the generation of new mutations and alleles. The ability to generate many different mutations from the same target sequence either by homology-directed repair with a donor sequence or non-homologous end joining-induced insertions and deletions necessitates a means for representing these mutations in literature and databases. Standardized nomenclature can be used to generate unambiguous, concise, and specific symbols to represent mutations and alleles. The research communities of a variety of species using CRISPR/Cas and other endonuclease-mediated mutation technologies have developed different approaches to naming and identifying such alleles and mutations. While some organism-specific research communities have developed allele nomenclature that incorporates the method of generation within the official allele or mutant symbol, others use metadata tags that include method of generation or mutagen. Organism-specific research community databases together with organism-specific nomenclature committees are leading the way in providing standardized nomenclature and metadata to facilitate the integration of data from alleles and mutations generated using CRISPR/Cas and other targeted endonucleases.
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Affiliation(s)
| | - Cynthia L Smith
- Mouse Genome Informatics, The Jackson Laboratory, Bar Harbor, 04609, USA
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Zhu P, Li H, Huang G, Cui J, Zhang R, Cui K, Yang S, Shi D. Molecular Cloning, Identification, and Expression Patterns of Myostatin Gene in Water Buffalo (Bubalus Bubalis). Anim Biotechnol 2017; 29:26-33. [PMID: 28355117 DOI: 10.1080/10495398.2017.1289941] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Myostatin (MSTN), also named growth differentiation factor 8 (GDF8), is a transforming growth factor-β (TGF-β) family member with a key role in the negative regulation of skeletal muscle growth. However, its role in ovarian folliculogenesis remains unclear. To provide us with a basis for understanding this role, we cloned MSTN and examined its expression patterns in water buffalo (Bubalus bubalis). The complete ORF of the water buffalo MSTN gene is 1,128 nucleotides, which encode a 375 amino acid protein and sharing 99% identity at the deducted amino acid level with that of Bos taurus. Protein sequence analysis showed that MSTN is a weakly acerbic extracellular protein, consisting of signal peptides at 18-19 sites, a TGF-β propeptide, and a TGF-β domain. RT-PCR analyses demonstrated that water buffalo MSTN was expressed in multiple tissues but not limited to muscle. Immunohistochemistry staining confirmed the presence of MSTN in oocytes and granulosal cells. To our knowledge, this is the first study to confirm the expression of MSTN in the water buffalo ovary, suggesting an additional role of MSTN in water buffalo folliculogenesis, along with its role in skeletal muscle growth regulation. Further study of the regulatory mechanism of MSTN in water buffalo reproduction is warranted. ABBREVIATIONS MSTN, myostatin; ORF, open reading frame.
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Affiliation(s)
- Peng Zhu
- a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , Guangxi University , Nanning , Guangxi , China.,b Guangxi Buffalo Research Institute , Chinese Academy of Agricultural Science , Nanning , China
| | - Haiyang Li
- a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , Guangxi University , Nanning , Guangxi , China
| | - Guiting Huang
- a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , Guangxi University , Nanning , Guangxi , China
| | - Jiayu Cui
- a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , Guangxi University , Nanning , Guangxi , China
| | - Ruimen Zhang
- a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , Guangxi University , Nanning , Guangxi , China
| | - Kuiqing Cui
- a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , Guangxi University , Nanning , Guangxi , China
| | - Sufang Yang
- a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , Guangxi University , Nanning , Guangxi , China
| | - Deshun Shi
- a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , Guangxi University , Nanning , Guangxi , China
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Yuan YG, Song SZ, Zhu MM, He ZY, Lu R, Zhang T, Mi F, Wang JY, Cheng Y. Human lactoferrin efficiently targeted into caprine beta-lactoglobulin locus with transcription activator-like effector nucleases. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2016; 30:1175-1182. [PMID: 28002927 PMCID: PMC5494492 DOI: 10.5713/ajas.16.0697] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/11/2016] [Accepted: 12/13/2016] [Indexed: 02/06/2023]
Abstract
Objective To create genetically modified goat as a biopharming source of recombinant human lacotoferrin (hLF) with transcription activator-like effector nucleases. Methods TALENs and targeting vector were transferred into cultured fibroblasts to insert hLF cDNA in the goat beta-lactoglobulin (BLG) locus with homology-directed repair. The gene targeted efficiency was checked using sequencing and TE7I assay. The bi-allelic gene targeted colonies were isolated and confirmed with polymerase chain reaction, and used as donor cells for somatic cell nuclear transfer (SCNT). Results The targeted efficiency for BLG gene was approximately 10%. Among 12 Bi-allelic gene targeted colonies, five were used in first round SCNT and 4 recipients (23%) were confirmed pregnant at 30 d. In second round SCNT, 7 (53%), 4 (31%), and 3 (23%) recipients were confirmed to be pregnant by ultrasound on 30 d, 60 d, and 90 d. Conclusion This finding signifies the combined use of TALENs and SCNT can generate bi-allelic knock-in fibroblasts that can be cloned in a fetus. Therefore, it might lay the foundation for transgenic hLF goat generation and possible use of their mammary gland as a bioreactor for large-scale production of recombinant hLF.
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Affiliation(s)
- Yu-Guo Yuan
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China.,Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, 225001, China
| | - Shao-Zheng Song
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Meng-Ming Zhu
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zheng-Yi He
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Rui Lu
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Ting Zhang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Fei Mi
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Jin-Yu Wang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Yong Cheng
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis/College of animal science and technology, Yangzhou University, Yangzhou, Jiangsu 225009, China.,Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, 225001, China
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