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Shakweer WME, Krivoruchko AY, Dessouki SM, Khattab AA. A review of transgenic animal techniques and their applications. J Genet Eng Biotechnol 2023; 21:55. [PMID: 37160523 PMCID: PMC10169938 DOI: 10.1186/s43141-023-00502-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 04/20/2023] [Indexed: 05/11/2023]
Abstract
Nowadays, breakthroughs in molecular biology are happening at an unprecedented rate. One of them is the ability to engineer transgenic animals. A transgenic animal is one whose genome has been changed to carry genes from another species or to use techniques for animal genome editing for specific traits. Animal features can be changed by purposefully altering the gene (or genes). A mouse was the first successful transgenic animal. Then pigs, sheep, cattle, and rabbits came a few years later. The foreign-interested genes that will be used in animal transgenic techniques are prepared using a variety of methods. The produced gene of interest is placed into a variety of vectors, including yeast artificial chromosomes, bacterial plasmids, and cosmids. Several techniques, including heat shock, electroporation, viruses, the gene gun, microinjection, and liposomes, are used to deliver the created vector, which includes the interesting gene, into the host cell. Transgenesis can be carried out in the gonads, sperm, fertilized eggs, and embryos through DNA microinjection, retroviruses, stem cells, and cloning. The most effective transgenic marker at the moment is fluorescent protein. Although transgenesis raises a number of ethical concerns, this review concentrates on the fundamentals of animal transgenesis and its usage in industry, medicine, and agriculture. Transgenesis success is confirmed by the integration of an antibiotic resistance gene, western and southern blots, PCR, and ELISA. If technology solves social and ethical problems, it will be the most promising in the future.
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Affiliation(s)
- W M E Shakweer
- Animal Production Department, Agricultural and Biological Research Institute, National Research Centre, 33 El-Buhouth Street, Dokki, Cairo, 12622, Egypt.
| | - A Y Krivoruchko
- Genetic and Biotechnology Department, All-Russian Research Institute of Sheep and Goat Breeding, Stavropol, Russia
| | - Sh M Dessouki
- Department of Animal Production, Faculty of Agriculture, Cairo University, 7 Gamaa Street, Giza, 12613, Egypt
| | - A A Khattab
- Genetics and Cytology Department, Biotechnology Research Institute, National Research Centre, 33 El-Buhouth Street, Dokki, Cairo, 12622, Egypt
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Mwaura JG, Wekesa C, Ogutu PA, Okoth P. Whole Transcriptome Analysis of Differentially Expressed Genes in Cultured Nile Tilapia (O. niloticus) Subjected to Chronic Stress Reveals Signaling Pathways Associated with Depressed Growth. Genes (Basel) 2023; 14:genes14040795. [PMID: 37107553 PMCID: PMC10137778 DOI: 10.3390/genes14040795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/11/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
Chronic stress is a serious threat to aquaculture as it lowers fish growth performance and compromises fish welfare. The exact mechanism by which growth is retarded is, however, not clearly understood. This study sought to elucidate the gene expression profiles associated with chronic stress in cultured Nile tilapia (Oreochromis niloticus) reared for 70 days at different ammonia concentrations and stocking densities. Fish in the treatment groups showed negative growth, while the controls showed positive allometric growth. The specific condition factor (Kn) ranged from 1.17 for the controls to 0.93 for the ammonia and 0.91 for the stocking density treatments. RNA was extracted from muscle tissue using TRIzol followed by library construction and Illumina sequencing. Comparative transcriptome analysis revealed 209 differentially expressed genes (DEGs) (156 up- and 53 down-regulated) in the ammonia and 252 DEGs (175 up- and 77 down-regulated) in the stocking density treatment. In both treatments, 24 and 17 common DEGs were up- and down-regulated, respectively. DEGs were significantly enriched in six pathways associated with muscle activity, energy mobilization and immunity. The heightened muscular activity consumes energy which would otherwise have been utilized for growth. These results bring to fore the molecular mechanisms underlying chronic stress’ suppression of growth in cultured Nile tilapia.
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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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Huang J, Zhou M, Chen J, Ke C. A Potential Negative Regulatory Function of Myostatin in the Growth of the Pacific Abalone, Haliotis discus hannai. BIOLOGY 2022; 12:biology12010014. [PMID: 36671706 PMCID: PMC9854804 DOI: 10.3390/biology12010014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/16/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
Myostatin, also known as GDF8, is a member of the transforming growth factor-β (TGF-β) superfamily. In vertebrates, myostatin negatively regulates the growth of skeletal muscle. In invertebrates, it has been reported to be closely related to animal growth. However, knowledge concerning the molecular mechanisms involved in the myostatin regulation of molluscan growth is limited. In this study, we found that the hdh-myostatin open reading frame (ORF) comprised 1470 base pairs that encoded 489 amino acids and contained structural characteristics typical of the TGF-β superfamily, including a C-terminal signal peptide, a propeptide domain, and TGF-β region. Gene expression analysis revealed that hdh-myostatin mRNA was widely expressed at different levels in all of the examined tissues of Haliotis discus hannai. Nine single nucleotide polymorphisms (SNPs) were associated with the growth traits. RNA interference (RNAi) against hdh-myostatin mRNA significantly downregulated hdh-myostatin at days 1, 15, and 30 post injection, and the pattern was correlated with downregulation of the genes TGF-β receptor type-I (hdh-TβR I), activin receptor type-IIB (hdh-ActR IIB), and mothers against decapentaplegic 3 (hdh-Smad3). After one month of the RNAi experiment, the shell lengths and total weights increased in the abalone, Haliotis discus hannai. The results of qRT-PCR showed that the hdh-myostatin mRNA level was higher in the slow-growing group than in the fast-growing group. These results suggest that hdh-myostatin is involved in the regulation of growth, and that these SNPs would be informative for further studies on selective breeding in abalone.
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Affiliation(s)
- Jianfang Huang
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, China
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Mingcan Zhou
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen 361102, China
| | - Jianming Chen
- Institute of Oceanography, College of Geography and Oceanography, Minjiang University, Fuzhou 350108, China
- Correspondence: (J.C.); (C.K.)
| | - Caihuan Ke
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen 361102, China
- Correspondence: (J.C.); (C.K.)
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Kanakachari M, Ashwini R, Chatterjee RN, Bhattacharya TK. Embryonic transcriptome unravels mechanisms and pathways underlying embryonic development with respect to muscle growth, egg production, and plumage formation in native and broiler chickens. Front Genet 2022; 13:990849. [PMID: 36313432 PMCID: PMC9616467 DOI: 10.3389/fgene.2022.990849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Muscle development, egg production, and plumage colors are different between native and broiler chickens. The study was designed to investigate why improved Aseel (PD4) is colorful, stronger, and grew slowly compared with the control broiler (CB). Methods: A microarray was conducted using the 7th-day embryo (7EB) and 18th-day thigh muscle (18TM) of improved Aseel and broiler, respectively. Also, we have selected 24 Gallus gallus candidate reference genes from NCBI, and total RNA was isolated from the broiler, improved Aseel embryo tissues, and their expression profiles were studied by real-time quantitative PCR (qPCR). Furthermore, microarray data were validated with qPCR using improved Aseel and broiler embryo tissues. Results: In the differential transcripts screening, all the transcripts obtained by microarray of slow and fast growth groups were screened by fold change ≥ 1 and false discovery rate (FDR) ≤ 0.05. In total, 8,069 transcripts were differentially expressed between the 7EB and 18TM of PD4 compared to the CB. A further analysis showed that a high number of transcripts are differentially regulated in the 7EB of PD4 (6,896) and fewer transcripts are differentially regulated (1,173) in the 18TM of PD4 compared to the CB. On the 7th- and 18th-day PD4 embryos, 3,890, 3,006, 745, and 428 transcripts were up- and downregulated, respectively. The commonly up- and downregulated transcripts are 91 and 44 between the 7th- and 18th-day of embryos. In addition, the best housekeeping gene was identified. Furthermore, we validated the differentially expressed genes (DEGs) related to muscle growth, myostatin signaling and development, and fatty acid metabolism genes in PD4 and CB embryo tissues by qPCR, and the results correlated with microarray expression data. Conclusion: Our study identified DEGs that regulate the myostatin signaling and differentiation pathway; glycolysis and gluconeogenesis; fatty acid metabolism; Jak-STAT, mTOR, and TGF-β signaling pathways; tryptophan metabolism; and PI3K-Akt signaling pathways in PD4. The results revealed that the gene expression architecture is present in the improved Aseel exhibiting embryo growth that will help improve muscle development, differentiation, egg production, protein synthesis, and plumage formation in PD4 native chickens. Our findings may be used as a model for improving the growth in Aseel as well as optimizing the growth in the broiler.
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Affiliation(s)
- M. Kanakachari
- ICAR-Directorate of Poultry Research, Hyderabad, India
- EVA.4 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czechia
| | - R. Ashwini
- ICAR-Directorate of Poultry Research, Hyderabad, India
| | | | - T. K. Bhattacharya
- ICAR-Directorate of Poultry Research, Hyderabad, India
- *Correspondence: T. K. Bhattacharya,
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Talebi R, Ghaffari MR, Zeinalabedini M, Abdoli R, Mardi M. Genetic basis of muscle‐related traits in sheep: A review. Anim Genet 2022; 53:723-739. [DOI: 10.1111/age.13266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/06/2022] [Accepted: 09/10/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Reza Talebi
- Department of Systems and Synthetic Biology Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO) Karaj Iran
- Department of Animal Sciences, Faculty of Agriculture Bu‐Ali Sina University Hamedan Iran
| | - Mohammad Reza Ghaffari
- Department of Systems and Synthetic Biology Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO) Karaj Iran
| | - Mehrshad Zeinalabedini
- Department of Systems and Synthetic Biology Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO) Karaj Iran
| | - Ramin Abdoli
- Iran Silk Research Center Agricultural Research, Education and Extension Organization (AREEO) Gilan Iran
| | - Mohsen Mardi
- Seed and Plant Certification and Registration Institute of Iran Agricultural Research, Education and Extension Organization (AREEO) Karaj Iran
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Wang J, Li J, Ge Q, Li J. A potential negative regulation of myostatin in muscle growth during the intermolt stage in Exopalaemon carinicauda. Gen Comp Endocrinol 2021; 314:113902. [PMID: 34529998 DOI: 10.1016/j.ygcen.2021.113902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 09/07/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
Muscle growth in crustacean is a complicated process where the muscle grows and develops through muscle restoration, and the growth rate depends on the net muscle gain during molting. Myostatin (MSTN) is a conserved inhibitor of muscle growth in vertebrates, but until now solid evidence supporting a similar function of MSTN in invertebrates has been lacking. In this study, we identified and characterized MSTN from the shrimp Exopalaemon carinicauda (EcMSTN) to better understand its biological function. The full-length cDNA of EcMSTN was 1,518 bp, encoding 428 amino acid residues, and the genomic sequence was 1,851 bp, including three exons and two introns. EcMSTN was expressed in a wide range of tissues, but predominantly detected in the abdominal muscle (P < 0.05). Low expression was detected in the cleavage, blastula and gastrula stages in the early development stages, increasing after the nauplius stage. EcMSTN expression was negatively correlated with the growth traits. After EcMSTN knockdown using RNA interference, EcMSTN expression was down-regulated in the abdominal muscle and up-regulated the expression of growth-related genes, including fast myosin heavy chain and skeletal muscle actin 3. After inhibiting EcMSTN for 5 weeks, the RNAi-treated shrimp with reduced EcMSTN levels exhibited a dramatically higher body weight compared with that of the control group. Association analysis revealed that two SNP loci g.Mstn220 and g.Mstn567 were markedly associated with both body weight and body length. The results would clarify the negative role of EcMSTN in regulating muscle growth during the intermolt stage and provide growth-related markers for molecular marker assisted breeding of E. carinicauda.
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Affiliation(s)
- Jiajia Wang
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture and Rural, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jitao Li
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture and Rural, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
| | - Qianqian Ge
- Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jian Li
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture and Rural, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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Screening of genes coupled to heat response in Mongolian and Dorper sheep breeds. Biologia (Bratisl) 2020. [DOI: 10.2478/s11756-020-00616-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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A Novel Nanobody Directed against Ovine Myostatin to Enhance Muscle Growth in Mouse. Animals (Basel) 2020; 10:ani10081398. [PMID: 32796682 PMCID: PMC7460164 DOI: 10.3390/ani10081398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/02/2020] [Accepted: 08/04/2020] [Indexed: 12/02/2022] Open
Abstract
Simple Summary Myostatin (MSTN) is a negative regulator of myogenesis, and various strategies have been used to improve livestock production by inhibiting MSTN. In this study, we developed a single-variable domain of the heavy chain antibody-recombinant MSTN nanobody (RMN) against MSTN. The selected RMN was expressed, purified, and assessed for its cytotoxicity, affinity, specificity, and the ability to inhibit MSTN. The results demonstrated that RMN could specifically detect and bind MSTN, further inhibit myostatin activity, as well as enhance muscle growth in mice. Abstract Myostatin (MSTN) is a member of the transforming growth factor beta superfamily and is a negative regulator of myogenesis. It has been shown to function by controlling the proliferation of myoblasts. MSTN inhibition is considered as a promising treatment for promoting animal growth in livestock. Nanobodies, a special antibody discovered in camel, have arisen as an alternative to conventional antibodies and have shown great potential when used as tools in different biotechnology fields, such as diagnostics and therapy. In this study, we examined the effect of MSTN inhibition by RMN on the muscle growth of mice. The results showed that RMN could specifically detect and bind MSTN, as well as inhibit MSTN activity. A significant increase in skeletal muscle mass was observed after intramuscular injection of RMN into mice. Enhanced muscle growth occurred because of myofiber hypertrophy. These results offer a promising approach to enhance muscle growth that warrants further investigation in domestic animals.
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Sousa-Junior LPB, Meira AN, Azevedo HC, Muniz EN, Coutinho LL, Mourão GB, Leão AG, Pedrosa VB, Pinto LFB. Variants in myostatin and MyoD family genes are associated with meat quality traits in Santa Inês sheep. Anim Biotechnol 2020; 33:201-213. [PMID: 32633608 DOI: 10.1080/10495398.2020.1781651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Myostatin and MyoD family genes play vital roles in myogenesis and this study aimed to identify association of variants in MyoD1, MyoG, MyF5, MyF6, and MSTN genes with meat traits in Santa Inês sheep. A dataset with 44 variants and records of seven meat traits in 192 lambs (pH0, pH24, a*, b*, L*, tenderness assessed by shear force, and water-holding capacity) was used. Single-locus and haplotype association analyses were performed, and the significance threshold was established according to Bonferroni's method. Single-locus analysis revealed two associations at a Bonferroni level, where the variant c.935-185C > G in MyoD1 had an additive effect (-4.31 ± 1.08 N) on tenderness, while the variant c.464 + 185G > A in MyoG had an additive effect (-2.86 ± 0.64) on a*. Additionally, the haplotype replacement GT>AC in MSTN was associated with pH0 (1.26 ± 0.31), pH24 (1.07 ± 0.27), a* (-1.40 ± 0.51), and tenderness (3.83 ± 1.22 N), while the replacement GT > AG in MyoD1 was associated with pH0 (1.43 ± 0.26), pH24 (1.25 ± 0.22), b* (-1.06 ± 0.39), and tenderness (-4.13 ± 1.16 N). Our results have demonstrated that some variants in MyoG, MyF6, MyoD1, and MSTN can be associated with physicochemical meat traits in Santa Inês sheep.
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Affiliation(s)
| | | | | | | | | | | | - André Gustavo Leão
- Instituto de Ciências Agrárias e Tecnológicas, Universidade Federal de Mato Grosso, Rondonópolis, MT, Brazil
| | - Victor Breno Pedrosa
- Departamento de Zootecnia, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
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Li W, Edwards A, Cox MS, Raabis SM, Skarlupka JH, Steinberger AJ, Murphy B, Larsen A, Suen G. Changes in the host transcriptome and microbial metatranscriptome of the ileum of dairy calves subjected to artificial dosing of exogenous rumen contents. Physiol Genomics 2020; 52:333-346. [PMID: 32567508 DOI: 10.1152/physiolgenomics.00005.2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Development of a properly functioning gastrointestinal tract (GIT) at an early age is critical for the wellbeing and lifetime productivity of dairy cattle. The role of early microbial colonization on GIT development in neonatal cattle and the associated molecular changes remain largely unknown, particularly for the small intestine. In this study, we performed artificial dosing of exogenous rumen fluid during the early life of the calf, starting at birth through the weaning transition at 8 wk. Six calves were included in this study. At 8 wk of age, tissue from the ileum was collected and subjected to host transcriptome and microbial metatranscriptome analysis using RNA sequencing. A total of 333 genes showed significant differential expression (DE) (fold-change ≥2; adjusted P < 0.1, mean read-count ≥10) between the treated and control calves. Gene ontology analysis indicated that these DE genes are predominantly associated with processes related to the host immune response (P < 0.0001). Association analysis between the host gene expression and the microbial genus abundance identified 57 genes as having significant correlation with the ileum microbial genera (P < 0.0001). Of these, three genes showed significant association with six microbial genera: lysozyme 2 (LYZ2), fatty acid binding protein 5 (FABP5), and fucosyltransferase (FUT1). Specifically, the profound increase in expression of LYZ2 in treated calves suggests the initiation of antibacterial activity and innate response from the host. Despite the limitation of a relatively small sample size, this study sheds light on the potential impact of early introduction of microbes on the small intestine of calves.
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Affiliation(s)
- Wenli Li
- The Cell Wall Utilization and Biology Laboratory, US Dairy Forage Research Center, US Department of Agriculture Agricultural Research Service, Madison, Wisconsin
| | - Andrea Edwards
- Department of Biology, University of Wisconsin-Madison, Madison, Wisconsin
| | - Madison S Cox
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin
| | - Sarah M Raabis
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Joseph H Skarlupka
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin
| | | | - Brianna Murphy
- Department of Nutritional Science, University of Wisconsin-Madison, Madison, Wisconsin
| | - Anna Larsen
- Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin
| | - Garret Suen
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin
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Torres-Velarde J, Llera-Herrera R, Ibarra-Castro L, García-Gasca T, García-Gasca A. Post-transcriptional silencing of myostatin-1 in the spotted rose snapper (Lutjanus guttatus) promotes muscle hypertrophy. Mol Biol Rep 2019; 47:443-450. [DOI: 10.1007/s11033-019-05147-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/16/2019] [Indexed: 12/13/2022]
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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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14
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Cao Y, You S, Yao Y, Liu ZJ, Hazi W, Li CY, Zhang XY, Hou XX, Wei JC, Li XY, Wang DW, Chen CF, Zhang YF, Ni W, Hu SW. Expression profiles of circular RNAs in sheep skeletal muscle. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2018; 31:1550-1557. [PMID: 29642686 PMCID: PMC6127590 DOI: 10.5713/ajas.17.0563] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 03/13/2018] [Indexed: 12/20/2022]
Abstract
Objective Circular RNAs (circRNAs) are a newfound class of non-coding RNA in animals and plants. Recent studies have revealed that circRNAs play important roles in cell proliferation, differentiation, autophagy and apoptosis during development. However, there are few reports about muscle development-related circRNAs in livestock. Methods RNA sequencing analysis was employed to identify and annotate circRNAs from longissimus dorsi of sheep. Reverse transcription followed by real-time quantitative (q) polymerase chain reaction (PCR) analysis verified the presence of these circRNAs. Targetscan7.0 and miRanda were used to analyse the interaction of circRNA-microRNA (miRNA). To investigate the function of circRNAs, an experiment was conducted to perform enrichment analysis hosting genes of circRNAs using gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) pathways. Results About 75.5 million sequences were obtained from RNA libraries of sheep skeletal muscle. These sequences were mapped to 729 genes in the sheep reference genome. We identified 886 circRNAs, including numerous circular intronic RNAs and exonic circRNAs. Reverse transcription PCR (RT-PCR) and DNA sequencing analysis confirmed the presence of several circRNAs. Real-Time RT-PCR analysis exhibited resistance of sheep circRNAs to RNase R digestion. We found that many circRNAs interacted with muscle-specific miRNAs involved in growth and development of muscle, especially circ776. The GO and KEGG enrichment analysis showed that hosting genes of circRNAs was involved in muscle cell development and signaling pathway. Conclusion The study provides comprehensive expression profiles of circRNAs in sheep skeletal muscle. Our study offers a large number of circRNAs to facilitate a better understanding of their roles in muscle growth. Meanwhile, we suggested that circ776 could be analyzed in future study.
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Affiliation(s)
- Yang Cao
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Shuang You
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Yang Yao
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Zhi-Jin Liu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Wureli Hazi
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Cun-Yuan Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Xiang-Yu Zhang
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Xiao-Xu Hou
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Jun-Chang Wei
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Xiao-Yue Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Da-Wei Wang
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Chuang-Fu Chen
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Yun-Feng Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Wei Ni
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Sheng-Wei Hu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
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15
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Wang X, Niu Y, Zhou J, Zhu H, Ma B, Yu H, Yan H, Hua J, Huang X, Qu L, Chen Y. CRISPR/Cas9-mediatedMSTNdisruption and heritable mutagenesis in goats causes increased body mass. Anim Genet 2018; 49:43-51. [DOI: 10.1111/age.12626] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2017] [Indexed: 12/16/2022]
Affiliation(s)
- X. Wang
- College of Animal Science and Technology; Northwest A&F University; Yangling 712100 China
| | - Y. Niu
- College of Animal Science and Technology; Northwest A&F University; Yangling 712100 China
| | - J. Zhou
- School of Life Science and Technology; ShanghaiTech University; Shanghai 201210 China
| | - H. Zhu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats; Yulin 719000 China
- Life Science Research Center; Yulin University; Yulin 719000 China
| | - B. Ma
- College of Veterinary Medicine; Shaanxi Centre of Stem Cells Engineering & Technology; Northwest A&F University; Yangling 712100 China
| | - H. Yu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats; Yulin 719000 China
- Life Science Research Center; Yulin University; Yulin 719000 China
| | - H. Yan
- College of Animal Science and Technology; Northwest A&F University; Yangling 712100 China
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats; Yulin 719000 China
- Life Science Research Center; Yulin University; Yulin 719000 China
| | - J. Hua
- College of Veterinary Medicine; Shaanxi Centre of Stem Cells Engineering & Technology; Northwest A&F University; Yangling 712100 China
| | - X. Huang
- School of Life Science and Technology; ShanghaiTech University; Shanghai 201210 China
| | - L. Qu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats; Yulin 719000 China
- Life Science Research Center; Yulin University; Yulin 719000 China
| | - Y. Chen
- College of Animal Science and Technology; Northwest A&F University; Yangling 712100 China
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16
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Kumar R, Singh SP, Mitra A. Short-hairpin Mediated Myostatin Knockdown Resulted in Altered Expression of Myogenic Regulatory Factors with Enhanced Myoblast Proliferation in Fetal Myoblast Cells of Goats. Anim Biotechnol 2017; 29:59-67. [PMID: 28358646 DOI: 10.1080/10495398.2017.1299744] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Myostatin (MSTN) is a well-known negative regulator of skeletal muscle development. Reduced expression due to natural mutations in the coding region and knockout as well as knockdown of MSTN results in an increase in the muscle mass. In the present study, we demonstrated as high as 60 and 52% downregulation (p < 0.01) of MSTN mRNA and protein in the primary fetal myoblast cells of goats using synthetic shRNAs (n = 3), without any interferon response. We, for the first time, evaluated the effect of MSTN knockdown on the expression of MRFs (namely, MyoD, Myf5), follistatin (FST), and IGFs (IGF-1 & IGF-2) in goat myoblast cells. MSTN knockdown caused an upregulation (p < 0.05) of MyoD and downregulation (p < 0.01) of MYf5 and FST expression. Moreover, we report up to ∼four fold (p < 0.001) enhanced proliferation in myoblasts after four days of culture. The anti-MSTN shRNA demonstrated in the present study could be used for the production of transgenic goats to increase the muscle mass.
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Affiliation(s)
- Rohit Kumar
- a Genome Analysis Laboratory, Animal Genetics Division , ICAR- Indian Veterinary Research Institute , Izatnagar , Bareilly , India
| | - Satyendra Pal Singh
- a Genome Analysis Laboratory, Animal Genetics Division , ICAR- Indian Veterinary Research Institute , Izatnagar , Bareilly , India
| | - Abhijit Mitra
- a Genome Analysis Laboratory, Animal Genetics Division , ICAR- Indian Veterinary Research Institute , Izatnagar , Bareilly , India
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17
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Bradford BJ, Cooper CA, Tizard ML, Doran TJ, Hinton TM. RNA interference-based technology: what role in animal agriculture? ANIMAL PRODUCTION SCIENCE 2017. [DOI: 10.1071/an15437] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Animal agriculture faces a broad array of challenges, ranging from disease threats to adverse environmental conditions, while attempting to increase productivity using fewer resources. RNA interference (RNAi) is a biological phenomenon with the potential to provide novel solutions to some of these challenges. Discovered just 20 years ago, the mechanisms underlying RNAi are now well described in plants and animals. Intracellular double-stranded RNA triggers a conserved response that leads to cleavage and degradation of complementary mRNA strands, thereby preventing production of the corresponding protein product. RNAi can be naturally induced by expression of endogenous microRNA, which are critical in the regulation of protein synthesis, providing a mechanism for rapid adaptation of physiological function. This endogenous pathway can be co-opted for targeted RNAi either through delivery of exogenous small interfering RNA (siRNA) into target cells or by transgenic expression of short hairpin RNA (shRNA). Potentially valuable RNAi targets for livestock include endogenous genes such as developmental regulators, transcripts involved in adaptations to new physiological states, immune response mediators, and also exogenous genes such as those encoded by viruses. RNAi approaches have shown promise in cell culture and rodent models as well as some livestock studies, but technical and market barriers still need to be addressed before commercial applications of RNAi in animal agriculture can be realised. Key challenges for exogenous delivery of siRNA include appropriate formulation for physical delivery, internal transport and eventual cellular uptake of the siRNA; additionally, rigorous safety and residue studies in target species will be necessary for siRNA delivery nanoparticles currently under evaluation. However, genomic incorporation of shRNA can overcome these issues, but optimal promoters to drive shRNA expression are needed, and genetic engineering may attract more resistance from consumers than the use of exogenous siRNA. Despite these hurdles, the convergence of greater understanding of RNAi mechanisms, detailed descriptions of regulatory processes in animal development and disease, and breakthroughs in synthetic chemistry and genome engineering has created exciting possibilities for using RNAi to enhance the sustainability of animal agriculture.
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18
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Generation of biallelic knock-out sheep via gene-editing and somatic cell nuclear transfer. Sci Rep 2016; 6:33675. [PMID: 27654750 PMCID: PMC5031972 DOI: 10.1038/srep33675] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 08/31/2016] [Indexed: 01/14/2023] Open
Abstract
Transgenic sheep can be used to achieve genetic improvements in breeds and as an important large-animal model for biomedical research. In this study, we generated a TALEN plasmid specific for ovine MSTN and transfected it into fetal fibroblast cells of STH sheep. MSTN biallelic-KO somatic cells were selected as nuclear donor cells for SCNT. In total, cloned embryos were transferred into 37 recipient gilts, 28 (75.7%) becoming pregnant and 15 delivering, resulting in 23 lambs, 12 of which were alive. Mutations in the lambs were verified via sequencing and T7EI assay, and the gene mutation site was consistent with that in the donor cells. Off-target analysis was performed, and no off-target mutations were detected. MSTN KO affected the mRNA expression of MSTN relative genes. The growth curve for the resulting sheep suggested that MSTN KO caused a remarkable increase in body weight compared with those of wild-type sheep. Histological analyses revealed that MSTN KO resulted in muscle fiber hypertrophy. These findings demonstrate the successful generation of MSTN biallelic-KO STH sheep via gene editing in somatic cells using TALEN technology and SCNT. These MSTN mutant sheep developed and grew normally, and exhibited increased body weight and muscle growth.
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19
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Wang X, Niu Y, Zhou J, Yu H, Kou Q, Lei A, Zhao X, Yan H, Cai B, Shen Q, Zhou S, Zhu H, Zhou G, Niu W, Hua J, Jiang Y, Huang X, Ma B, Chen Y. Multiplex gene editing via CRISPR/Cas9 exhibits desirable muscle hypertrophy without detectable off-target effects in sheep. Sci Rep 2016; 6:32271. [PMID: 27562433 PMCID: PMC4999810 DOI: 10.1038/srep32271] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 08/04/2016] [Indexed: 01/20/2023] Open
Abstract
The CRISPR/Cas9 system provides a flexible approach for genome engineering of genetic loci. Here, we successfully achieved precise gene targeting in sheep by co-injecting one-cell-stage embryos with Cas9 mRNA and RNA guides targeting three genes (MSTN, ASIP, and BCO2). We carefully examined the sgRNAs:Cas9-mediated targeting effects in injected embryos, somatic tissues, as well as gonads via cloning and sequencing. The targeting efficiencies in these three genes were within the range of 27–33% in generated lambs, and that of simultaneously targeting the three genes was 5.6%, which demonstrated that micro-injection of zygotes is an efficient approach for generating gene-modified sheep. Interestingly, we observed that disruption of the MSTN gene resulted in the desired muscle hypertrophy that is characterized by enlarged myofibers, thereby providing the first detailed evidence supporting that gene modifications had occurred at both the genetic and morphological levels. In addition, prescreening for the off-target effect of sgRNAs was performed on fibroblasts before microinjection, to ensure that no detectable off-target mutations from founder animals existed. Our findings suggested that the CRISPR/Cas9 method can be exploited as a powerful tool for livestock improvement by simultaneously targeting multiple genes that are responsible for economically significant traits.
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Affiliation(s)
- Xiaolong Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Yiyuan Niu
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Jiankui Zhou
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center of Nanjing University, National Resource Center for Mutant Mice, Nanjing 210061, China.,School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Honghao Yu
- College of Life Science, Yulin University, Yulin 719000, China
| | - Qifang Kou
- Ningxia Tianyuan Sheep Farm, Hongsibu, 751999, China
| | - Anmin Lei
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Xiaoe Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Hailong Yan
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.,College of Life Science, Yulin University, Yulin 719000, China
| | - Bei Cai
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Qiaoyan Shen
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Shiwei Zhou
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Haijing Zhu
- College of Life Science, Yulin University, Yulin 719000, China
| | - Guangxian Zhou
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Wenzhi Niu
- Ningxia Tianyuan Sheep Farm, Hongsibu, 751999, China
| | - Jinlian Hua
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Yu Jiang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Xingxu Huang
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center of Nanjing University, National Resource Center for Mutant Mice, Nanjing 210061, China.,School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Baohua Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Yulin Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
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20
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Sinclair KD, Rutherford KMD, Wallace JM, Brameld JM, Stöger R, Alberio R, Sweetman D, Gardner DS, Perry VEA, Adam CL, Ashworth CJ, Robinson JE, Dwyer CM. Epigenetics and developmental programming of welfare and production traits in farm animals. Reprod Fertil Dev 2016; 28:RD16102. [PMID: 27439952 DOI: 10.1071/rd16102] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 06/06/2016] [Indexed: 12/11/2022] Open
Abstract
The concept that postnatal health and development can be influenced by events that occur in utero originated from epidemiological studies in humans supported by numerous mechanistic (including epigenetic) studies in a variety of model species. Referred to as the 'developmental origins of health and disease' or 'DOHaD' hypothesis, the primary focus of large-animal studies until quite recently had been biomedical. Attention has since turned towards traits of commercial importance in farm animals. Herein we review the evidence that prenatal risk factors, including suboptimal parental nutrition, gestational stress, exposure to environmental chemicals and advanced breeding technologies, can determine traits such as postnatal growth, feed efficiency, milk yield, carcass composition, animal welfare and reproductive potential. We consider the role of epigenetic and cytoplasmic mechanisms of inheritance, and discuss implications for livestock production and future research endeavours. We conclude that although the concept is proven for several traits, issues relating to effect size, and hence commercial importance, remain. Studies have also invariably been conducted under controlled experimental conditions, frequently assessing single risk factors, thereby limiting their translational value for livestock production. We propose concerted international research efforts that consider multiple, concurrent stressors to better represent effects of contemporary animal production systems.
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21
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New insights and current tools for genetically engineered (GE) sheep and goats. Theriogenology 2016; 86:160-9. [PMID: 27155732 DOI: 10.1016/j.theriogenology.2016.04.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/08/2015] [Accepted: 03/14/2016] [Indexed: 01/20/2023]
Abstract
Genetically engineered sheep and goats represent useful models applied to proof of concepts, large-scale production of novel products or processes, and improvement of animal traits, which is of interest in biomedicine, biopharma, and livestock. This disruptive biotechnology arose in the 80s by injecting DNA fragments into the pronucleus of zygote-staged embryos. Pronuclear microinjection set the transgenic concept into people's mind but was characterized by inefficient and often frustrating results mostly because of uncontrolled and/or random integration and unpredictable transgene expression. Somatic cell nuclear transfer launched the second wave in the late 90s, solving several weaknesses of the previous technique by making feasible the transfer of a genetically modified and fully characterized cell into an enucleated oocyte, capable of cell reprogramming to generate genetically engineered animals. Important advances were also achieved during the 2000s with the arrival of new techniques like the lentivirus system, transposons, RNA interference, site-specific recombinases, and sperm-mediated transgenesis. We are now living the irruption of the third technological wave in which genome edition is possible by using endonucleases, particularly the CRISPR/Cas system. Sheep and goats were recently produced by CRISPR/Cas9, and for sure, cattle will be reported soon. We will see new genetically engineered farm animals produced by homologous recombination, multiple gene editing in one-step generation and conditional modifications, among other advancements. In the following decade, genome edition will continue expanding our technical possibilities, which will contribute to the advancement of science, the development of clinical or commercial applications, and the improvement of people's life quality around the world.
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22
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Zhao X, Ni W, Chen C, Sai W, Qiao J, Sheng J, Zhang H, Li G, Wang D, Hu S. Targeted Editing of Myostatin Gene in Sheep by Transcription Activator-like Effector Nucleases. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2016; 29:413-8. [PMID: 26950874 PMCID: PMC4811794 DOI: 10.5713/ajas.15.0041] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 04/22/2015] [Accepted: 07/17/2015] [Indexed: 11/27/2022]
Abstract
Myostatin (MSTN) is a secreted growth factor expressed in skeletal muscle and adipose tissue that negatively regulates skeletal muscle mass. Gene knockout of MSTN can result in increasing muscle mass in sheep. The objectives were to investigate whether myostatin gene can be edited in sheep by transcription activator-like effector nucleases (TALENs) in tandem with single-stranded DNA oligonucleotides (ssODNs). We designed a pair of TALENs to target a highly conserved sequence in the coding region of the sheep MSTN gene. The activity of the TALENs was verified by using luciferase single-strand annealing reporter assay in HEK 293T cell line. Co-transfection of TALENs and ssODNs oligonucleotides induced precise gene editing of myostatin gene in sheep primary fibroblasts. MSTN gene-edited cells were successfully used as nuclear donors for generating cloned embryos. TALENs combined with ssDNA oligonucleotides provide a useful approach for precise gene modification in livestock animals.
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Affiliation(s)
- Xinxia Zhao
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003,
China
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, 832003,
China
| | - Wei Ni
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, 832003,
China
| | - Chuangfu Chen
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003,
China
| | - Wujiafu Sai
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003,
China
| | - Jun Qiao
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003,
China
| | - Jingliang Sheng
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003,
China
| | - Hui Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003,
China
| | - Guozhong Li
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003,
China
| | - Dawei Wang
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, 832003,
China
| | - Shengwei Hu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, 832003,
China
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23
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Identification of Deleterious Mutations in Myostatin Gene of Rohu Carp (Labeo rohita) Using Modeling and Molecular Dynamic Simulation Approaches. BIOMED RESEARCH INTERNATIONAL 2016; 2016:7562368. [PMID: 27019850 PMCID: PMC4785247 DOI: 10.1155/2016/7562368] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 01/13/2016] [Accepted: 01/27/2016] [Indexed: 11/18/2022]
Abstract
The myostatin (MSTN) is a known negative growth regulator of skeletal muscle. The mutated myostatin showed a double-muscular phenotype having a positive significance for the farmed animals. Consequently, adequate information is not available in the teleosts, including farmed rohu carp, Labeo rohita. In the absence of experimental evidence, computational algorithms were utilized in predicting the impact of point mutation of rohu myostatin, especially its structural and functional relationships. The four mutations were generated at different positions (p.D76A, p.Q204P, p.C312Y, and p.D313A) of MSTN protein of rohu. The impacts of each mutant were analyzed using SIFT, I-Mutant 2.0, PANTHER, and PROVEAN, wherein two substitutions (p.D76A and p.Q204P) were predicted as deleterious. The comparative structural analysis of each mutant protein with the native was explored using 3D modeling as well as molecular-dynamic simulation techniques. The simulation showed altered dynamic behaviors concerning RMSD and RMSF, for either p.D76A or p.Q204P substitution, when compared with the native counterpart. Interestingly, incorporated two mutations imposed a significant negative impact on protein structure and stability. The present study provided the first-hand information in identifying possible amino acids, where mutations could be incorporated into MSTN gene of rohu carp including other carps for undertaking further in vivo studies.
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Ni W, Qiao J, Ma Q, Wang J, Wang D, Zhao X, Cao Y, Li Q, Hu S, Chen C. Development of sheep kidney cells with increased resistance to different subgenotypes of BVDV-1 by RNA interference. J Virol Methods 2015; 218:66-70. [PMID: 25813600 DOI: 10.1016/j.jviromet.2015.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 03/15/2015] [Accepted: 03/16/2015] [Indexed: 11/26/2022]
Abstract
Bovine viral diarrhea virus (BVDV) should be a ubiquitous viral pathogen to the cattle and sheep industry. This pathogen is responsible for severe economic losses. We previously showed that plasmid-mediated dual short hairpin RNA (shRNA) efficiently inhibit BVDV replication in bovine kidney epithelial (MDBK) cells. In this study, we delivered the dual shRNA system to sheep fibroblasts and generated transgenic cell colonies. These transgenic fibroblasts were further used for somatic cell nuclear transfer (SCNT). Three lambs were born at full term, but perished soon after birth. Integration of shRNA into the genome of cloned sheep was confirmed by PCR and expression of shRNA in transgenic sheep was confirmed by real-time PCR. Kidney epithelial cells were isolated from transgenic sheep and challenged with multiple BVDV subgenotypes (BVDV-1a, BVDV-1b and BVDV-1c). The dual shRNA expressed in transgenic kidney epithelial cells significantly inhibited BVDV replication in a cross-resistance manner. Our results showed that transgenic RNAi might be a useful tool for preparation of transgenic animals with increased resistance to BVDV.
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Affiliation(s)
- Wei Ni
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Jun Qiao
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Qiman Ma
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Jiangde Wang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Dawei Wang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Xinxia Zhao
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Yang Cao
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Qifeng Li
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Shengwei Hu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China.
| | - Chuangfu Chen
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
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25
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Ahrens HE, Petersen B, Herrmann D, Lucas-Hahn A, Hassel P, Ziegler M, Kues WA, Baulain U, Baars W, Schwinzer R, Denner J, Rataj D, Werwitzke S, Tiede A, Bongoni AK, Garimella PS, Despont A, Rieben R, Niemann H. siRNA mediated knockdown of tissue factor expression in pigs for xenotransplantation. Am J Transplant 2015; 15:1407-14. [PMID: 25808638 DOI: 10.1111/ajt.13120] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/07/2014] [Accepted: 11/23/2014] [Indexed: 01/25/2023]
Abstract
Acute vascular rejection (AVR), in particular microvascular thrombosis, is an important barrier to successful pig-to-primate xenotransplantation. Here, we report the generation of pigs with decreased tissue factor (TF) levels induced by small interfering (si)RNA-mediated gene silencing. Porcine fibroblasts were transfected with TF-targeting small hairpin (sh)RNA and used for somatic cell nuclear transfer. Offspring were analyzed for siRNA, TF mRNA and TF protein level. Functionality of TF downregulation was investigated by a whole blood clotting test and a flow chamber assay. TF siRNA was expressed in all twelve liveborn piglets. TF mRNA expression was reduced by 94.1 ± 4.7% in TF knockdown (TFkd) fibroblasts compared to wild-type (WT). TF protein expression in PAEC stimulated with 50 ng/mL TNF-α was significantly lower in TFkd pigs (mean fluorescence intensity TFkd: 7136 ± 136 vs. WT: 13 038 ± 1672). TF downregulation significantly increased clotting time (TFkd: 73.3 ± 8.8 min, WT: 45.8 ± 7.7 min, p < 0.0001) and significantly decreased thrombus formation compared to WT (mean thrombus coverage per viewing field in %; WT: 23.5 ± 13.0, TFkd: 2.6 ± 3.7, p < 0.0001). Our data show that a functional knockdown of TF is compatible with normal development and survival of pigs. TF knockdown could be a valuable component in the generation of multi-transgenic pigs for xenotransplantation.
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Affiliation(s)
- H E Ahrens
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Mariensee, Neustadt, Germany
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Patel UA, Patel AK, Joshi CG. Stable suppression of myostatin gene expression in goat fetal fibroblast cells by lentiviral vector-mediated RNAi. Biotechnol Prog 2014; 31:452-9. [PMID: 25395261 DOI: 10.1002/btpr.2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 10/20/2014] [Indexed: 12/21/2022]
Abstract
Myostatin (MSTN) is a secreted growth factor that negatively regulates skeletal muscle mass, and therefore, strategies to block myostatin-signaling pathway have been extensively pursued to increase the muscle mass in livestock. Here, we report a lentiviral vector-based delivery of shRNA to disrupt myostatin expression into goat fetal fibroblasts (GFFs) that were commonly used as karyoplast donors in somatic-cell nuclear transfer (SCNT) studies. Sh-RNA positive cells were screened by puromycin selection. Using real-time polymerase chain reaction (PCR), we demonstrated efficient knockdown of endogenous myostatin mRNA with 64% down-regulation in sh2 shRNA-treated GFF cells compared to GFF cells treated by control lentivirus without shRNA. Moreover, we have also demonstrated both the induction of interferon response and the expression of genes regulating myogenesis in GFF cells. The results indicate that myostatin-targeting siRNA produced endogenously could efficiently down-regulate myostatin expression. Therefore, targeted knockdown of the MSTN gene using lentivirus-mediated shRNA transgenics would facilitate customized cell engineering, allowing potential use in the establishment of stable cell lines to produce genetically engineered animals.
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Affiliation(s)
- Utsav A Patel
- Dept. of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat, India, 388001
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27
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Patel AK, Shah RK, Patel UA, Tripathi AK, Joshi CG. Goat activin receptor type IIB knockdown by muscle specific promoter driven artificial microRNAs. J Biotechnol 2014; 187:87-97. [PMID: 25107506 DOI: 10.1016/j.jbiotec.2014.07.450] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 07/20/2014] [Accepted: 07/25/2014] [Indexed: 01/30/2023]
Abstract
Activin receptor type IIB (ACVR2B) is a transmembrane receptor which mediates signaling of TGF beta superfamily ligands known to function in regulation of muscle mass, embryonic development and reproduction. ACVR2B antagonism has shown to enhance the muscle growth in several disease and transgenic models. Here, we show ACVR2B knockdown by RNA interference using muscle creatine kinase (MCK) promoter driven artificial microRNAs (amiRNAs). Among the various promoter elements tested, the ∼1.26 kb MCK promoter region showed maximum transcriptional activity in goat myoblasts cells. We observed up to 20% silencing in non-myogenic 293T cells and up to 32% silencing in myogenic goat myoblasts by MCK directed amiRNAs by transient transfection. Goat myoblasts stably integrated with MCK directed amiRNAs showed merely 8% silencing in proliferating myoblasts which was increased to 34% upon induction of differentiation at transcript level whereas up to 57% silencing at protein level. Knockdown of ACVR2B by 5'-UTR derived amiRNAs resulted in decreased SMAD2/3 signaling, increased expression of myogenic regulatory factors (MRFs) and enhanced proliferation and differentiation of myoblasts. Unexpectedly, knockdown of ACVR2B by 3'-UTR derived amiRNAs resulted in increased SMAD2/3 signaling, reduced expression of MRFs and suppression of myogenesis. Our study offers muscle specific knockdown of ACVR2B as a potential strategy to enhance muscle mass in the farm animal species.
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Affiliation(s)
- Amrutlal K Patel
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand 388001, India
| | - Ravi K Shah
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand 388001, India
| | - Utsav A Patel
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand 388001, India
| | - Ajai K Tripathi
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Chaitanya G Joshi
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand 388001, India.
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Zhong B, Zhang Y, Yan Y, Wang Z, Ying S, Huang M, Wang F. MicroRNA-mediated myostatin silencing in caprine fetal fibroblasts. PLoS One 2014; 9:e107071. [PMID: 25244645 PMCID: PMC4171098 DOI: 10.1371/journal.pone.0107071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 08/12/2014] [Indexed: 12/13/2022] Open
Abstract
Myostatin functions as a negative regulator of skeletal muscle growth by suppressing proliferation and differentiation of myoblasts. Dysfunction of the myostatin gene, either due to natural mutation or genetic manipulations such as knockout or knockdown, has been reported to increase muscle mass in mammalian species. RNA interference (RNAi) mediated by microRNAs (miRNAs) is a promising method for gene knockdown studies. In the present study, transient and stable silencing of the myostatin gene in caprine fetal fibroblasts (CFF) was evaluated using the two most effective constructs selected from four different miRNA expression constructs screened in 293FT cells. Using these two miRNA constructs, we achieved up to 84% silencing of myostatin mRNA in transiently transfected CFF cells and up to 31% silencing in stably transfected CFF cells. Moreover, off-target effects due to induction of interferon (IFN) response genes, such as interferon beta (IFN-β) and 2′-5′-oligoadenylate synthetase 2 (OAS2), were markedly fewer in stably transfected CFF cells than in transiently transfected cells. Stable expression of anti-myostatin miRNA with minimal induction of interferon shows great promise for increasing muscle mass in transgenic goats.
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Affiliation(s)
- Bushuai Zhong
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, PR China
- Jiangsu Engineering Technology Research Center of Meat Sheep & Goat Industry, Nanjing Agricultural University, Nanjing, PR China
| | - Yanli Zhang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, PR China
- Jiangsu Engineering Technology Research Center of Meat Sheep & Goat Industry, Nanjing Agricultural University, Nanjing, PR China
| | - Yibo Yan
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, PR China
| | - Ziyu Wang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, PR China
| | - Shijia Ying
- Jiangsu Engineering Technology Research Center of Meat Sheep & Goat Industry, Nanjing Agricultural University, Nanjing, PR China
| | - Mingrui Huang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, PR China
- * E-mail: (MH); (FW)
| | - Feng Wang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, PR China
- Jiangsu Engineering Technology Research Center of Meat Sheep & Goat Industry, Nanjing Agricultural University, Nanjing, PR China
- * E-mail: (MH); (FW)
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Ni W, Qiao J, Hu S, Zhao X, Regouski M, Yang M, Polejaeva IA, Chen C. Efficient gene knockout in goats using CRISPR/Cas9 system. PLoS One 2014; 9:e106718. [PMID: 25188313 PMCID: PMC4154755 DOI: 10.1371/journal.pone.0106718] [Citation(s) in RCA: 168] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 08/10/2014] [Indexed: 11/19/2022] Open
Abstract
The CRISPR/Cas9 system has been adapted as an efficient genome editing tool in laboratory animals such as mice, rats, zebrafish and pigs. Here, we report that CRISPR/Cas9 mediated approach can efficiently induce monoallelic and biallelic gene knockout in goat primary fibroblasts. Four genes were disrupted simultaneously in goat fibroblasts by CRISPR/Cas9-mediated genome editing. The single-gene knockout fibroblasts were successfully used for somatic cell nuclear transfer (SCNT) and resulted in live-born goats harboring biallelic mutations. The CRISPR/Cas9 system represents a highly effective and facile platform for targeted editing of large animal genomes, which can be broadly applied to both biomedical and agricultural applications.
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Affiliation(s)
- Wei Ni
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang, China
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
| | - Jun Qiao
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, China
| | - Shengwei Hu
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
- * E-mail: (SH); (IP); (CC)
| | - Xinxia Zhao
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, China
| | - Misha Regouski
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
| | - Min Yang
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
| | - Irina A. Polejaeva
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
- * E-mail: (SH); (IP); (CC)
| | - Chuangfu Chen
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, China
- * E-mail: (SH); (IP); (CC)
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Patel AK, Shah RK, Parikh IK, Joshi CG. Goat activin receptor type IIB knockdown by artificial microRNAs in vitro. Appl Biochem Biotechnol 2014; 174:424-36. [PMID: 25080379 DOI: 10.1007/s12010-014-1071-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 07/21/2014] [Indexed: 10/25/2022]
Abstract
Activin receptor type IIB (ACVR2B) has been known to negatively regulate the muscle growth through mediating the action of transforming growth factor beta superfamily ligands. Recently, the artificial microRNAs (amiRNAs) which are processed by endogenous miRNA processing machinery have been proposed as promising approach for efficient gene knockdown. We evaluated amiRNAs targeting goat ACVR2B in HEK293T and goat myoblasts cells. The amiRNAs were designed based on the miR-155 backbone and cloned in 5'- and 3'-UTR of GFP reporter gene under the CMV promoter. Although both 5'- and 3'-UTR-amiRNAs vectors showed efficient synthesis of GFP transcripts, amiRNAs in 5'-UTR drastically affected GFP protein synthesis in transfected goat myoblast cells. Among the four amiRNAs targeting ACVR2B derived from either 5'- or 3'-UTR, ami318 showed highest silencing efficiency against exogenously co-expressed ACVR2B in both 293T and goat myoblast cells whereas ami204 showed highest silencing efficiency against endogenous ACVR2B in goat myoblasts cells. The 3'-UTR-derived amiRNA exerted higher knockdown efficiency against endogenous ACVR2B at transcript level whereas 5'-UTR-derived amiRNAs exerted higher knockdown efficiency at protein level. The expression of ACVR2B showed positive correlation with the expression of MYOD (r = 0.744; p = 0.009) and MYOG (r = 0.959; p = 0.000) in the amiRNA-transfected myoblasts. Although both 5'- and 3'-UTR-amiRNA vectors led to substantial induction of interferon response, the magnitude of the response was found to be higher with the 3'-UTR-amiRNA vectors.
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Affiliation(s)
- Amrutlal K Patel
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, 388001, Gujarat, India
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Myostatin-2 isolation and spatiotemporal expression comparison between myostatin-1 and -2 in Larimichthys crocea. Genes Genomics 2014. [DOI: 10.1007/s13258-014-0196-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bouyer C, Forestier L, Renand G, Oulmouden A. Deep intronic mutation and pseudo exon activation as a novel muscular hypertrophy modifier in cattle. PLoS One 2014; 9:e97399. [PMID: 24827585 PMCID: PMC4020855 DOI: 10.1371/journal.pone.0097399] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 04/17/2014] [Indexed: 02/02/2023] Open
Abstract
Myostatin is essential for proper regulation of myogenesis, and inactivation of Myostatin results in muscle hypertrophy. Here, we identified an unexpected mutation in the myostatin gene which is almost fixed in Blonde d'Aquitaine cattle. In skeletal muscle, the mutant allele was highly expressed leading to an abnormal transcript consisting of a 41-bp inclusion and premature termination codons and to residual levels of a correctly spliced transcript. This expression pattern, caused by a leaky intronic mutation with regard to spliceosome activity and its apparent stability with regard to surveillance mechanisms, could contribute to the moderate muscle hypertrophy in this cattle breed. This finding is of importance for genetic counseling for meat quantity and quality in livestock production and possibly to manipulate myostatin pre-mRNA in human muscle diseases.
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Affiliation(s)
- Claire Bouyer
- Unité Mixte de Recherche (UMR) 1061 INRA/Université de Limoges, Unité de Génétique Moléculaire Animale, Limoges, France
| | - Lionel Forestier
- Unité Mixte de Recherche (UMR) 1061 INRA/Université de Limoges, Unité de Génétique Moléculaire Animale, Limoges, France
| | - Gilles Renand
- UMR 1313 INRA, Unité de Génétique Animale et Biologie Intégrative, Jouy-en-Josas, France
| | - Ahmad Oulmouden
- Unité Mixte de Recherche (UMR) 1061 INRA/Université de Limoges, Unité de Génétique Moléculaire Animale, Limoges, France
- * E-mail:
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33
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Patel AK, Tripathi AK, Patel UA, Shah RK, Joshi CG. Myostatin knockdown and its effect on myogenic gene expression program in stably transfected goat myoblasts. In Vitro Cell Dev Biol Anim 2014; 50:587-96. [PMID: 24682647 DOI: 10.1007/s11626-014-9743-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 02/24/2014] [Indexed: 12/12/2022]
Abstract
Myostatin, a negative regulator of skeletal muscle mass, is a proven candidate to modulate skeletal muscle mass through targeted gene knockdown approach. Here, we report myostatin (MSTN) knockdown in goat myoblasts stably expressing small hairpin RNA (shRNAs) against MSTN gene through lentivirus vector-mediated integration. We observed 72% (p = 0.003) and 54% (p = 0.022) downregulation of MSTN expression with sh2 shRNA compared to empty vector control and untransduced myoblasts, respectively. The knockdown of MSTN expression was accompanied with concomitant downregulation of myogenic regulatory factor MYOD (77%, p = 0.001), MYOG (94%, p = 0.000), and MYF5 (36%, p = 0.000), cell cycle regulator p21 (62%, p = 0.000), MSTN receptor ACVR2B (23%, p = 0.061), MSTN antagonist follistatin (81%, p = 0.000), and downstream signaling mediators SMAD2 (20%, p = 0.060) and SMAD3 (49%, p = 0.006). However, the expression of MYF6 was upregulated by 14% compared to control lentivirus-transduced myoblasts (p = 0.354) and 79% compared to untransduced myoblasts (p = 0.018) in sh2 shRNA-transduced goat myoblasts cells. Although, MSTN knockdown led to sustained cell proliferation of myoblasts, the myoblasts fusion was suppressed in both MSTN knocked down and control lentivirus-transduced myoblasts. The expression of interferon response gene OAS1 was significantly upregulated in control lentivirus (10.86-fold; p = 0.000)- and sh2 (1.71-fold; p = 0.002)-integrated myoblasts compared to untransduced myoblasts. Our study demonstrates stable knockdown of MSTN in goat myoblasts cells and its potential for use in generation of transgenic goat by somatic cell nuclear transfer.
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Affiliation(s)
- Amrutlal K Patel
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, 388 001, Gujarat, India
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Wang L, You J, Zhong B, Ren C, Zhang Y, Li M, Zhang G, Jia R, Ying S, Wang F. Scd1 mammary-specific vector constructed and overexpressed in goat fibroblast cells resulting in an increase of palmitoleic acid and oleic acid. Biochem Biophys Res Commun 2013; 443:389-94. [PMID: 24309099 DOI: 10.1016/j.bbrc.2013.11.091] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 11/22/2013] [Indexed: 11/29/2022]
Abstract
Stearoyl-CoA desaturase-1 (Scd1) is a rate-limiting enzyme in the biosynthesis of monounsaturated fatty acids. Overexpression of Scd1 in transgenic animals would modify the nutritional value of ruminant-derived foods by increasing the monounsaturated fatty acid (MUFA) and decreasing the saturated fatty acid (SFA) content. The aim of this study was to develop an effective Scd1 vector that is specifically expressed in dairy goat mammary glands. We successfully amplified the goat full length Scd1 cDNA and evaluated its activity in goat ear skin-derived fibroblast cells (GEFCs) by lipid analysis. In addition, we constructed a mammary gland-specific expression vector and confirmed efficient expression of Scd1 in goat mammary epithelial cells (GMECs) by qRT-PCR and Western blot analysis. Fatty acid analysis showed that Scd1-overexpression resulted in an increase in levels of palmitoleic acid (16:1n-7) and oleic acid (18:1n-9), from 1.73 ± 0.02% to 2.54 ± 0.02% and from 27.25 ± 0.13% to 30.37 ± 0.04%, respectively (both p<0.01) and the ratio of MUFA to SFA was increased. This work lays a foundation for the generation of Scd1 transgenic goats.
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Affiliation(s)
- Lizhong Wang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Jihao You
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Bushuai Zhong
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Caifang Ren
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Yanli Zhang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Meng Li
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Guomin Zhang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Ruoxin Jia
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Shijia Ying
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
| | - Feng Wang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing 210095, China.
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