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Zhang X, Wang L, Wu Y, Li W, An J, Zhang F, Liu M. Knockout of Myostatin by Zinc-finger Nuclease in Sheep Fibroblasts and Embryos. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2016; 29:1500-7. [PMID: 27189642 PMCID: PMC5003977 DOI: 10.5713/ajas.16.0130] [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: 02/17/2016] [Revised: 03/30/2016] [Accepted: 04/22/2016] [Indexed: 02/07/2023]
Abstract
Myostatin (MSTN) can negatively regulate the growth and development of skeletal muscle, and natural mutations can cause "double-muscling" trait in animals. In order to block the inhibiting effect of MSTN on muscle growth, we transferred zinc-finger nucleases (ZFN) which targeted sheep MSTN gene into cultured fibroblasts. Gene targeted colonies were isolated from transfected fibroblasts by serial dilution culture and screened by sequencing. Two colonies were identified with mono-allele mutation and one colony with bi-allelic deletion. Further, we introduced the MSTN-ZFN mRNA into sheep embryos by microinjection. Thirteen of thirty-seven parthenogenetic embryos were targeted by ZFN, with the efficiency of 35%. Our work established the technical foundation for generation of MSTN gene editing sheep by somatic cloning and microinjection ZFN into embryos.
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Affiliation(s)
- Xuemei Zhang
- Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.,Key Laboratory of Genetics, Breeding and Reproduction of Grass-Feeding Animal, Ministry of Agriculture, Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, Xinjiang 830026, China.,Institute of animal biotechnology, Xinjiang Academy of Animal Science, Urumqi, Xinjiang 830026, China
| | - Liqin Wang
- Key Laboratory of Genetics, Breeding and Reproduction of Grass-Feeding Animal, Ministry of Agriculture, Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, Xinjiang 830026, China.,Institute of animal biotechnology, Xinjiang Academy of Animal Science, Urumqi, Xinjiang 830026, China
| | - Yangsheng Wu
- Key Laboratory of Genetics, Breeding and Reproduction of Grass-Feeding Animal, Ministry of Agriculture, Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, Xinjiang 830026, China.,Institute of animal biotechnology, Xinjiang Academy of Animal Science, Urumqi, Xinjiang 830026, China
| | - Wenrong Li
- Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.,Key Laboratory of Genetics, Breeding and Reproduction of Grass-Feeding Animal, Ministry of Agriculture, Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, Xinjiang 830026, China.,Institute of animal biotechnology, Xinjiang Academy of Animal Science, Urumqi, Xinjiang 830026, China
| | - Jing An
- Key Laboratory of Genetics, Breeding and Reproduction of Grass-Feeding Animal, Ministry of Agriculture, Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, Xinjiang 830026, China.,Institute of animal biotechnology, Xinjiang Academy of Animal Science, Urumqi, Xinjiang 830026, China
| | - Fuchun Zhang
- Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Mingjun Liu
- Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.,Key Laboratory of Genetics, Breeding and Reproduction of Grass-Feeding Animal, Ministry of Agriculture, Key Laboratory of Animal Biotechnology of Xinjiang, Urumqi, Xinjiang 830026, China.,Institute of animal biotechnology, Xinjiang Academy of Animal Science, Urumqi, Xinjiang 830026, China
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Zhang C, Wang L, Ren G, Li Z, Ren C, Zhang T, Xu K, Zhang Z. Targeted disruption of the sheep MSTN gene by engineered zinc-finger nucleases. Mol Biol Rep 2013; 41:209-15. [PMID: 24197697 DOI: 10.1007/s11033-013-2853-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 10/30/2013] [Indexed: 10/26/2022]
Abstract
Prior to the development of zinc-finger nuclease technology, genetic manipulation by gene targeting achieved limited success in mammals, with the exception of mice and rat. Although ZFNs demonstrated highly effective gene targeted disruption in various model organisms, the activity of ZFNs in large domestic animals may be very low, and the probability of identifying ZFN-mediated positive targeted disruption events is small. In this paper, we used the context-dependent assembly method to synthesize two pairs of ZFNs targeted to the sheep MSTN gene. We verified the activity of these ZFNs using an mRFP-MBS-eGFP dual-fluorescence reporter system in HEK293T cells and, according to the expression level of eGFP, we obtained a pair of ZFNs that can recognize and cut the targeted MSTN site in the reporter vector. The activity of ZFN was increased by cold stimulation at 30 °C and by mutant the wildtype FokI in ZFN with its counterpart Sharkeys. Finally, the ZF-Sharkeys and reporter vector were cotransfected into sheep fetal fibroblasts and two MSTN mutant cell lines, identified by flow cytometry and sequencing, were obtained.
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Affiliation(s)
- Cunfang Zhang
- College of Animal Science and Technology, Northwest A&F University, No. 22 Xinong Road, Yangling, Xianyang, 712100, Shaanxi, People's Republic of China
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