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Liu Y, Stott R, Regouski M, Fan Z, Perisse IV, Patrick T, Keim J, Meng Q, Polejaeva IA. A retrospective analysis of sheep generated by somatic cell nuclear transfer. Theriogenology 2024; 227:102-111. [PMID: 39047406 DOI: 10.1016/j.theriogenology.2024.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 07/17/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024]
Abstract
Somatic cell nuclear transfer (SCNT) is one of the primary methods for production of genetically engineered sheep, which allows for gene editing or transgene introduction in somatic cells. The use of SCNT eliminates the risk of genetic mosaicism in embryos and animals that is commonly observed after zygote micromanipulations. This retrospective analysis of SCNT in sheep performed at Utah State University, spanning from 2016 to 2021, examined parameters that may impact pregnancy and full-term development, including donor oocytes (donor age), donor cell lines, SCNT parameters (time of oocyte activation following SCNT, number of transferred embryos, in vitro maturation and culture conditions), and recipients (surgical number and ovulatory status), as well as factors that may correlate with large offspring syndrome or abnormal offspring syndrome (LOS/AOS) in the fetuses and lambs. Our findings indicated that compared to prepubertal oocytes, the SCNT embryos produced from adult sheep oocytes had comparable in vitro maturation rates, pregnancy and full-term development rates, as well as SCNT efficiency. In addition, earlier activation time of SCNT embryos (e.g. 24-26 h post maturation) was correlated to the early pregnancy loss rate, full-term rate, and SCNT efficiency. Compared to our standard serum-containing medium, commercial serum-free culture medium showed a positive correlation with the full-term development of sheep SCNT embryos. Transferring 15-30 embryos per recipient resulted in consistently good pregnancy rates. Surgical numbers and ovulatory status (having at least one follicle between 6 and 12 mm in size or a corpus hemorrhagicum (CH)) of recipients did not affect pregnancy and full-term development rates. In summary, this retrospective analysis identified parameters for improving pregnancy and full-term development of SCNT embryos in sheep.
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Affiliation(s)
- Ying Liu
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA.
| | - Rusty Stott
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Misha Regouski
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Zhiqiang Fan
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Iuri Viotti Perisse
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Tayler Patrick
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Jacob Keim
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Qinggang Meng
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Irina A Polejaeva
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA.
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2
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Feng R, Zhao J, Zhang Q, Zhu Z, Zhang J, Liu C, Zheng X, Wang F, Su J, Ma X, Mi X, Guo L, Yan X, Liu Y, Li H, Chen X, Deng Y, Wang G, Zhang Y, Liu X, Liu J. Generation of Anti-Mastitis Gene-Edited Dairy Goats with Enhancing Lysozyme Expression by Inflammatory Regulatory Sequence using ISDra2-TnpB System. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2404408. [PMID: 39099401 DOI: 10.1002/advs.202404408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/29/2024] [Indexed: 08/06/2024]
Abstract
Gene-editing technology has become a transformative tool for the precise manipulation of biological genomes and holds great significance in the field of animal disease-resistant breeding. Mastitis, a prevalent disease in animal husbandry, imposes a substantial economic burden on the global dairy industry. In this study, a regulatory sequence gene editing breeding strategy for the successful creation of a gene-edited dairy (GED) goats with enhanced mastitis resistance using the ISDra2-TnpB system and dairy goats as the model animal is proposed. This included the targeted integration of an innate inflammatory regulatory sequence (IRS) into the promoter region of the lysozyme (LYZ) gene. Upon Escherichia Coli (E. coli) mammary gland infection, GED goats exhibited increased LYZ expression, showing robust anti-mastitis capabilities, mitigating PANoptosis activation, and alleviating blood-milk-barrier (BMB) damage. Notably, LYZ is highly expressed only in E. coli infection. This study marks the advent of anti-mastitis gene-edited animals with exogenous-free gene expression and demonstrates the feasibility of the gene-editing strategy proposed in this study. In addition, it provides a novel gene-editing blueprint for developing disease-resistant strains, focusing on disease specificity and biosafety while providing a research basis for the widespread application of the ISDra2-TnpB system.
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Affiliation(s)
- Rui Feng
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Jianglin Zhao
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Qian Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Zhenliang Zhu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Junyu Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Chengyuan Liu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Xiaoman Zheng
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Fan Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Jie Su
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Xianghai Ma
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Xiaoyu Mi
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Lin Guo
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Xiaoxue Yan
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Yayi Liu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Huijia Li
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Xu Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Yi Deng
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Guoyan Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Yong Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Xu Liu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
| | - Jun Liu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
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Gavin W, Buzzell N, Blash S, Chen L, Hawkins N, Miner K, Pollock D, Porter C, Bonzo D, Meade H. Generation of goats by nuclear transfer: a retrospective analysis of a commercial operation (1998-2010). Transgenic Res 2020; 29:443-459. [PMID: 32613547 DOI: 10.1007/s11248-020-00207-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 06/18/2020] [Indexed: 12/26/2022]
Abstract
At LFB USA, Inc., the ultimate use for transgenic cloned goats is for the production of recombinant human protein therapeutics in their milk. This retrospective analysis of the Somatic Cell Nuclear Transfer (SCNT) program, spanning from 1998 to 2010, examined parameters potentially affecting the outcomes and efficiencies in this commercial operation. Over 37,000 + ova were utilized in the SCNT protocol producing a total of 203 cloned goats. Fifty one (51) clones were produced from non-transfected (transgenic and non-transgenic animal donor) cell lines and 152 clones were produced from transfected cell lines. Comparisons and summaries of (a) transfected versus non-transfected cell lines, (b) relationship of SCNT parameters to offspring produced, (c) skin versus fetal cells, (d) fresh versus cryopreserved cells, (e) parameters from all cell lines used versus those producing SCNT offspring, (f) variation among cell sources, (g) methods of SCNT parturition management and effects on live offspring, and lastly (h) SCNT variation by program are reported. Findings indicate that (a) non-transfected cell lines were more efficient versus transfected cell lines in generating viable cloned offspring on a per reconstructed embryo transferred basis, (b) transfected fetal fibroblasts had improved efficiency versus transfected skin fibroblasts, (c) the percentage of non-transfected cell lines that produced offspring was statistically higher than transfected cell lines, (d) and induction of parturition improved the percentage of viable offspring. In summary, this retrospective analysis on the SCNT process has identified certain parameters for improved efficiency in producing viable cloned goats in a commercial setting.
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Affiliation(s)
- W Gavin
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
| | - N Buzzell
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA.
| | - S Blash
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
| | - L Chen
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
| | - N Hawkins
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
| | - K Miner
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
| | - D Pollock
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
| | - C Porter
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
| | - D Bonzo
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
| | - H Meade
- LFB USA, Inc., 175 Crossing Boulevard, Framingham, MA, 01702, USA
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4
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Wang Y, Liu Q, Kang J, Zhang Y, Quan F. Overexpression of PGC7 in donor cells maintains the DNA methylation status of imprinted genes in goat embryos derived from somatic cell nuclear transfer technology. Theriogenology 2020; 151:86-94. [PMID: 32344274 DOI: 10.1016/j.theriogenology.2020.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 03/26/2020] [Accepted: 04/11/2020] [Indexed: 11/27/2022]
Abstract
Abnormal methylation of imprinted genes is commonly observed in the embryos cloned by somatic cell nuclear transfer (SCNT) procedure and is one of the primary reasons for their abnormal development and high mortality. Primordial germ cell 7 (PGC7), a developmentally regulated gene highly expressed in primordial germ cells, maintains the methylation level of imprinted genes by reducing the levels of 5-hydroxy-methylcytosine(5hmC) and increasing the levels of 5-methylcytosine(5 mC) during embryonic development. In this study, we explored the methylation status of H19 differentially methylated regions (DMRs) in the organs of SCNT-cloned goat fetuses. Our results showed abnormal methylation patterns of the imprinted genes in the lungs and placenta of dead cloned goat fetuses than those in normal goat fetuses. The Igf2r DMRs were hypomethylated in the heart, liver, spleen, lungs, kidneys, and placenta of dead cloned goat fetuses compared with normal goat fetuses (P < 0.05). In addition, imprinted gene Igf2r DMRs were hypomethylated in the early-stage SCNT embryos than the IVF embryos. In contrast, imprinted gene Xist DMRs were hypermethylated in SCNT embryos than the IVF embryos. Significantly, the use of PGC7 overexpressing donor cells corrected the abnormal methylation of imprinted genes Igf2r and Xist in SCNT embryos (P < 0.05). Our results suggested that PGC7 plays a vital role in maintaining the methylation of imprinted genes during goat early embryonic development. Moreover, PGC7 overexpression in donor cells may reduce the developmental abnormalities associated with the SCNT embryos, while significantly enhancing both the pregnancy and kids born rates (P < 0.05) thereby increasing SCNT efficiency in livestock.
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Affiliation(s)
- Yufei Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, 712100, Shaanxi, China; College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Qingqing Liu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, 712100, Shaanxi, China; College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jian Kang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, 712100, Shaanxi, China; College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yong Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, 712100, Shaanxi, China; College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Fusheng Quan
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, 712100, Shaanxi, China; College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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5
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Qu P, Shen C, Du Y, Qin H, Luo S, Fu S, Dong Y, Guo S, Hu F, Xue Y, Liu E. Melatonin Protects Rabbit Somatic Cell Nuclear Transfer (SCNT) Embryos from Electrofusion Damage. Sci Rep 2020; 10:2186. [PMID: 32042116 PMCID: PMC7010831 DOI: 10.1038/s41598-020-59161-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 01/21/2020] [Indexed: 12/22/2022] Open
Abstract
The study’s objectives were to examine the effects of electrofusion on rabbit somatic cell nuclear transfer (SCNT) embryos, and to test melatonin as a protective agent against electrofusion damage to SCNT embryos. The levels of reactive oxygen species (ROS), the epigenetic state (H3K9me3), and the content of endoplasmic reticulum (ER) stress-associated transcripts (IRE-1 and CHOP) were measured. Melatonin was added during the preimplantation development period. The total blastocyst cell numbers were counted, and the fragmentation rate and apoptotic index were determined and used to assess embryonic development. Electrofusion increased (1) ROS levels at the 1-, 2-, 4-, and 8-cell stages; (2) H3K9me3 levels at the 2-, 4-, and 8-cell stage; and (3) the expression of IRE-1 and CHOP at the 8-cell, 16-cell, morula, and blastocyst stages. The treatment of SCNT embryos with melatonin significantly reduced the level of ROS and H3K9me3, and the expression levels of IRE-1 and CHOP. This treatment also significantly reduced the fragmentation rate and apoptotic index of blastocysts and increased their total cell number. In conclusion, the electrofusion of rabbit SCNT embryos induced oxidative stress, disturbed the epigenetic state, and caused ER stress, while melatonin reduced this damage. Our findings are of signal importance for improving the efficiency of SCNT and for optimizing the application of electrical stimulation in other biomedical areas.
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Affiliation(s)
- Pengxiang Qu
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China.,Research Institute of Atherosclerotic Disease, Xi'an Jiaotong University Cardiovascular Research Centre, Xi'an, Shaanxi, 710061, China
| | - Chong Shen
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China
| | - Yue Du
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DU, UK
| | - Hongyu Qin
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China
| | - Shiwei Luo
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China
| | - Sixin Fu
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China
| | - Yue Dong
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China
| | - Shuaiqingying Guo
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China
| | - Fang Hu
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China
| | - Ying Xue
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China
| | - Enqi Liu
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, China. .,Research Institute of Atherosclerotic Disease, Xi'an Jiaotong University Cardiovascular Research Centre, Xi'an, Shaanxi, 710061, China.
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6
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Yuan Y, Liu R, Zhang X, Zhang J, Zheng Z, Huang C, Cao G, Liu H, Zhang X. Effects of recipient oocyte source, number of transferred embryos and season on somatic cell nuclear transfer efficiency in sheep. Reprod Domest Anim 2019; 54:1443-1448. [PMID: 31381183 DOI: 10.1111/rda.13546] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/28/2019] [Indexed: 12/13/2022]
Abstract
To improve the efficiency of somatic cell nuclear transfer (SCNT) in sheep, we investigated the effects of recipient oocyte source, number of transferred embryos and season on the pregnancy and live lamb rates for sheep somatic cell nuclear transfer embryos. Follicle-stimulating hormone (FSH)-stimulated ovaries produced significantly more oocytes both in total and of suitable quality for maturation culture than those without FSH treatment (from slaughterhouse). However, their in vitro maturation rates were similar. Embryos were reconstructed using adult fibroblast cells into enucleated MII oocytes. The pregnancy and term rates were significantly higher in the FSH-stimulated group than in the slaughterhouse one. Oocytes from FSH-stimulated ovaries were enucleated as recipient cytoplasm for nuclear transfer in the following experiments. The transfer of 7-9 and 11-13 embryos produced significantly higher pregnancy rates than that of six embryos. However, the former groups exhibited similar live lamb rates. FSH-stimulated ovaries produced significantly more oocytes in November and December (winter) than in May to July (summer), but the associated maturation rate did not increase. Pregnancy and term rates were significantly higher when transfer occurred in winter than in summer. In conclusion, FSH treatment produced significant benefit regarding the number and quality of collected oocytes and also for the pregnancy and live lamb rates for reconstructed embryos. However, the transfer of an appropriate number of embryos (7-13) and at an appropriate season (winter) increased pregnancy and term rates.
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Affiliation(s)
- Yixin Yuan
- Tianjin Institute of Animal Science and Veterinary Medicine, Tianjin, China.,College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Ruming Liu
- College of Life Sciences, Nankai University, Tianjin, China
| | - Xiaosheng Zhang
- Tianjin Institute of Animal Science and Veterinary Medicine, Tianjin, China
| | - Jinlong Zhang
- Tianjin Institute of Animal Science and Veterinary Medicine, Tianjin, China
| | - Zi Zheng
- Tianjin Institute of Animal Science and Veterinary Medicine, Tianjin, China
| | - Chengjun Huang
- Animal Husbandry Economic Management Station of Liaoning Province, Shenyang, China
| | - Guifang Cao
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Haijun Liu
- Tianjin Institute of Animal Science and Veterinary Medicine, Tianjin, China
| | - Xianfu Zhang
- College of Animal Science and Technology, Zhejiang Agriculture & Forestry University, Hangzhou, China
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7
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Zhang J, Cui ML, Nie YW, Dai B, Li FR, Liu DJ, Liang H, Cang M. CRISPR/Cas9-mediated specific integration of fat-1 at the goat MSTN locus. FEBS J 2018; 285:2828-2839. [PMID: 29802684 DOI: 10.1111/febs.14520] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/30/2018] [Accepted: 05/23/2018] [Indexed: 01/15/2023]
Abstract
Recent advances in understanding the CRISPR/Cas9 system have provided a precise and versatile approach for genome editing in various species. However, no study has reported simultaneous knockout of endogenous genes and site-specific knockin of exogenous genes in large animal models. Using the CRISPR/Cas9 system, this study specifically inserted the fat-1 gene into the goat MSTN locus, thereby achieving simultaneous fat-1 insertion and MSTN mutation. We introduced the Cas9, MSTN knockout small guide RNA and fat-1 knockin vectors into goat fetal fibroblasts by electroporation, and obtained a total of 156 positive clonal cell lines. PCR and sequencing were performed for identification. Of the 156 clonal strains, 40 (25.6%) had simultaneous MSTN knockout and fat-1 insertion at the MSTN locus without drug selection, and 55 (35.25%) and 101 (67.3%) had MSTN mutations and fat-1 insertions, respectively. We generated a site-specific knockin Arbas cashmere goat model using a combination of CRISPR/Cas9 and somatic cell nuclear transfer for the first time. For biosafety, we mainly focused on unmarked and non-resistant gene screening, and point-specific gene editing. The results showed that simultaneous editing of the two genes (simultaneous knockout and knockin) was achieved in large animals, demonstrating that the CRISPR/Cas9 system has the potential to become an important and applicable gene engineering tool in safe animal breeding.
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Affiliation(s)
- Ju Zhang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, China
| | - Meng-Lan Cui
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, China
| | - Yong-Wei Nie
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, China
| | - Bai Dai
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, China
| | - Fei-Ran Li
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, China
| | - Dong-Jun Liu
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, China
| | - Hao Liang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, China
| | - Ming Cang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, China
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8
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Han C, Deng R, Mao T, Luo Y, Wei B, Meng P, Zhao L, Zhang Q, Quan F, Liu J, Zhang Y. Overexpression of Tet3 in donor cells enhances goat somatic cell nuclear transfer efficiency. FEBS J 2018; 285:2708-2723. [PMID: 29791079 DOI: 10.1111/febs.14515] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/31/2018] [Accepted: 05/18/2018] [Indexed: 12/14/2022]
Abstract
Ten-eleven translocation 3 (TET3) mediates active DNA demethylation of paternal genomes during mouse embryonic development. However, the mechanism of DNA demethylation in goat embryos remains unknown. In addition, aberrant DNA methylation reprogramming prevalently occurs in embryos cloned by somatic cell nuclear transfer (SCNT). In this study, we reported that TET3 is a key factor in DNA demethylation in goat pre-implantation embryos. Knockdown of Tet3 hindered DNA demethylation at the two- to four-cell stage in goat embryos and decreased Nanog expression in blastocysts. Overexpression of Tet3 in somatic cells can initiate DNA demethylation, reduce 5-methylcytosine level, increase 5-hydroxymethylcytosine level and promote the expression of key pluripotency genes. After SCNT, overexpression of Tet3 in donor cells corrected abnormal DNA hypermethylation of cloned embryos and significantly enhanced in vitro and in vivo developmental rate (P < 0.05). We conclude that overexpression of Tet3 in donor cells significantly improves goat SCNT efficiency.
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Affiliation(s)
- Chengquan Han
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Ruizhi Deng
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Tingchao Mao
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Yan Luo
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Biao Wei
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Peng Meng
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Lu Zhao
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Qing Zhang
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Fusheng Quan
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Jun Liu
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Yong Zhang
- Key Laboratory of Animal Biotechnology, College of Veterinary Medicine, Ministry of Agriculture, Northwest A&F University, Yangling, China
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9
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Mao T, Han C, Deng R, Wei B, Meng P, Luo Y, Zhang Y. Treating donor cells with 2-PCPA corrects aberrant histone H3K4 dimethylation and improves cloned goat embryo development. Syst Biol Reprod Med 2018. [PMID: 29542357 DOI: 10.1080/19396368.2018.1446229] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Epigenetic modifications extensively occur in mammalian embryonic development and cell differentiation process. They play an essential role in the reprogramming of nuclei during somatic cell nuclear transfer (SCNT) and subsequent in vitro embryonic development. Recently, SCNT embryos have been verified to contain a subnormal level of histone H3K4 dimethylation (H3K4me2) in contrast to in vitro fertilized embryos. This finding suggested that increasing H3K4me2 levels may ameliorate the aberrant development of cloned embryos. In this study, we investigated the influence of treating donor cells with trans-2-Phenylcyclopropylamine (2-PCPA), a specific inhibitor of lysine-specific demethylase 1 (LSD1), on embryogenesis, H3K4me2 level, and gene expression in cloned goat embryos. Treated goat fetal fibroblast cells (GFFs) with 2-PCPA served as donor cells for subsequent SCNT. Results showed that H3K4me2 levels in treated GFFs increased gradually with the increasing 2-PCPA concentration (p < 0.05) and had no obvious influence in cell viability. The 2-PCPA-induced up-regulation of H3K4me2 levels led to G0/G1 cell cycle arrest and the difference was significant at 2μM compared with the control group (p < 0.05). Interestingly, the development rate of goat SCNT embryos in vitro was significantly improved and aberrant H3K4me2 levels were effectively corrected in 2-PCPA-treated SCNT embryos in contrast to that in SCNT control embryos. Moreover, 2-PCPA treatment promoted the mRNA expression of key developmental genes Oct4 and Sox2 (p < 0.05) without affecting the expression levels of imprinted genes IGF2R and H19 in goat SCNT embryos. These results indicated that abnormal H3K4me2 status can be corrected and SCNT embryo development can be promoted through treatment of donor cells with 2-PCPA. ABBREVIATIONS SCNT: somatic cell nuclear transfer; H3K4me2: H3K4 dimethylation; 2-PCPA: trans-2-Phenylcyclopropylamine; LSD1: lysine-specific demethylase 1; GFFs: goat fetal fibroblast cells; IVF: in vitro fertilization; iPS: induced pluripotent stem; PBS: phosphate-buffered saline; IVM: in vitro maturation; RNAPII: RNA polymerase II; HMTs: histone methyltransferase.
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Affiliation(s)
- Tingchao Mao
- a Key Laboratory of Animal Biotechnology of the Ministry of Agriculture , College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China
| | - Chengquan Han
- a Key Laboratory of Animal Biotechnology of the Ministry of Agriculture , College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China
| | - Ruizhi Deng
- a Key Laboratory of Animal Biotechnology of the Ministry of Agriculture , College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China
| | - Biao Wei
- a Key Laboratory of Animal Biotechnology of the Ministry of Agriculture , College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China
| | - Peng Meng
- a Key Laboratory of Animal Biotechnology of the Ministry of Agriculture , College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China
| | - Yan Luo
- a Key Laboratory of Animal Biotechnology of the Ministry of Agriculture , College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China
| | - Yong Zhang
- a Key Laboratory of Animal Biotechnology of the Ministry of Agriculture , College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China
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10
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Treatment donor cells with UNC0638 modify the abnormal histone H3K9 dimethylation and gene expression in cloned goat embryos. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.08.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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11
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Zhang YL, Zhang GM, Jia RX, Wan YJ, Yang H, Sun LW, Han L, Wang F. Non-invasive assessment of culture media from goat cloned embryos associated with subjective morphology by gas chromatography - mass spectroscopy-based metabolomic analysis. Anim Sci J 2017; 89:31-41. [PMID: 28833899 DOI: 10.1111/asj.12885] [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] [Received: 01/01/2017] [Accepted: 06/21/2017] [Indexed: 12/29/2022]
Abstract
Pre-implantation embryo metabolism demonstrates distinctive characteristics associated with the development potential of embryos. We aim to determine if metabolic differences correlate with embryo morphology. In this study, gas chromatography - mass spectroscopy (GC-MS)-based metabolomics was used to assess the culture media of goat cloned embryos collected from high-quality (HQ) and low-quality (LQ) groups based on morphology. Expression levels of amino acid transport genes were further examined by quantitative real-time PCR. Results showed that the HQ group presented higher percentages of blastocysts compared with the LQ counterparts (P < 0.05). Metabolic differences were also present between HQ and LQ groups. The culture media of the HQ group showed lower levels of valin, lysine, glutamine, mannose and acetol, and higher levels of glucose, phytosphingosine and phosphate than those of the LQ group. Additionally, expression levels of amino acid transport genes SLC1A5 and SLC3A2 were significantly lower in the HQ group than the LQ group (P < 0.05, respectively). To our knowledge, this is the first report which uses GC-MS to detect metabolic differences in goat cloned embryo culture media. The biochemical profiles may help to select the most in vitro viable embryos.
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Affiliation(s)
- Yan-Li Zhang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Guo-Min Zhang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Ruo-Xin Jia
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Yong-Jie Wan
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Hua Yang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Ling-Wei Sun
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Le Han
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science, Nanjing Agricultural University, Nanjing, China
| | - Feng Wang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science, Nanjing Agricultural University, Nanjing, China
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Ge H, Cui C, Liu J, Luo Y, Quan F, Jin Y, Zhang Y. The growth and reproduction performance of TALEN-mediated β-lactoglobulin-knockout bucks. Transgenic Res 2016; 25:721-9. [PMID: 27272006 DOI: 10.1007/s11248-016-9967-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 05/25/2016] [Indexed: 12/27/2022]
Abstract
With the technological development of several engineered endonucleases (EENs), such as zinc-finger nucleases, transcription activator-like effector nucleases (TALENs) and CRISPR/Cas9, gene targeting by homologous recombination has been efficiently improved to generate site-specifically genetically modified livestock. However, few studies have been done to investigate the health and fertility of these animals. The purpose of the present study is to investigate if gene targeting events and a recloning procedure would affect the production traits of EEN-mediated gene targeted bucks. TALEN-mediated β-lactoglobulin (BLG) gene mono-allelic knockout (BLG (+/-)) goats and bi-allelic knockout (BLG (-/-)) buck produced by using sequential gene targeting combined with recloning in fibroblasts from BLG (+/-) buck were used to evaluate their health and fertility. Birth weight and postnatal growth of BLG (+/-) bucks were similar to the wild-type goats. None of the parameters for both fresh and frozen-thawed semen quality were significantly different in BLG (+/-) or BLG (-/-) bucks compared to their corresponding comparators. In vitro fertilization (IVF) test revealed that the proportion of IVF oocytes developing to the blastocyst stage was identical among BLG (+/-), BLG (-/-) and wild-type bucks. Conception rates of artificial insemination were respectively 42.3, 38.0 and 42.6 % for frozen-thawed semen from the BLG (+/-), BLG (-/-) and wild-type bucks. In addition, germline transmission of the targeted BLG modification was in accordance with Mendelian rules. These results demonstrated that the analyzed growth and reproductive traits were not impacted by targeting BLG gene and recloning, implicating the potential for dairy goat breeding of BLG (+/-) and BLG (-/-) bucks.
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Affiliation(s)
- Hengtao Ge
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Chenchen Cui
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jun Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yan Luo
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Fusheng Quan
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yaping Jin
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China.
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China.
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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13
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Liu H, Peng H, Liu F, Ma Q, Zhang W. The expression of β-galactosidase during long-term cultured goat skin fibroblasts and the effect of donor cell passage on in vitro development of nuclear transfer embryos. In Vitro Cell Dev Biol Anim 2016; 52:555-61. [PMID: 26944897 DOI: 10.1007/s11626-015-9984-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 11/25/2015] [Indexed: 11/26/2022]
Abstract
The present study aimed to detect the expression of β-galactosidase during long-term cultured goat skin fibroblasts and investigate the effects of donor goat age, sex, and cell passage on senescence and the effects of donor cell passage on in vitro development of nuclear transfer embryos. The results showed that, in the same cell passage, more β-galactosidase-positive cells were detected in cells from older donors than younger donors. Irrespective of the donor age, the number of positive cells was higher in later passages from passages 20 to 50. In the same passage from 20 to 50, the β-galactosidase-positive rate was higher in cells from 5-yr female goat than 5-yr male goat. Using fibroblasts from male goats at various passages as donor cells, reconstructed embryos had similar fusion and cleavage rates, but the blastocyst rate was higher for cells at passages 10 and 20 than passage 30. In conclusion, donor goat age and cell passage had significant effects on the β-galactosidase-positive rate; also, cells from 5-yr female goat had a higher β-galactosidase-positive rate than those from 5-yr male goat, and the donor cell passage affected the developmental potential of nuclear transfer embryos.
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Affiliation(s)
- Haijun Liu
- Tianjin Institute of Animal Science and Veterinary Medicine, Tianjin, 300384, China
| | - Hui Peng
- College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Fang Liu
- College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Qun Ma
- College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Wenchang Zhang
- College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
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14
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Su F, Wang Y, Liu G, Ru K, Liu X, Yu Y, Liu J, Wu Y, Quan F, Guo Z, Zhang Y. Generation of transgenic cattle expressing human β-defensin 3 as an approach to reducing susceptibility toMycobacterium bovisinfection. FEBS J 2016; 283:776-90. [DOI: 10.1111/febs.13641] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 12/19/2015] [Accepted: 01/04/2016] [Indexed: 12/26/2022]
Affiliation(s)
- Feng Su
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
- College of Animal Science and Veterinary Medicine; Shandong Agricultural University; Taian Shandong China
| | - Yongsheng Wang
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Guanghui Liu
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Kun Ru
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Xin Liu
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Yuan Yu
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Jun Liu
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Yongyan Wu
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Fusheng Quan
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Zekun Guo
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
| | - Yong Zhang
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi China
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15
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Cui C, Song Y, Liu J, Ge H, Li Q, Huang H, Hu L, Zhu H, Jin Y, Zhang Y. Gene targeting by TALEN-induced homologous recombination in goats directs production of β-lactoglobulin-free, high-human lactoferrin milk. Sci Rep 2015; 5:10482. [PMID: 25994151 PMCID: PMC5386245 DOI: 10.1038/srep10482] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 04/15/2015] [Indexed: 11/17/2022] Open
Abstract
β-Lactoglobulin (BLG) is a major goat’s milk allergen that is absent in human milk. Engineered endonucleases, including transcription activator-like effector nucleases (TALENs) and zinc-finger nucleases, enable targeted genetic modification in livestock. In this study, TALEN-mediated gene knockout followed by gene knock-in were used to generate BLG knockout goats as mammary gland bioreactors for large-scale production of human lactoferrin (hLF). We introduced precise genetic modifications in the goat genome at frequencies of approximately 13.6% and 6.09% for the first and second sequential targeting, respectively, by using targeting vectors that underwent TALEN-induced homologous recombination (HR). Analysis of milk from the cloned goats revealed large-scale hLF expression or/and decreased BLG levels in milk from heterozygous goats as well as the absence of BLG in milk from homozygous goats. Furthermore, the TALEN-mediated targeting events in somatic cells can be transmitted through the germline after SCNT. Our result suggests that gene targeting via TALEN-induced HR may expedite the production of genetically engineered livestock for agriculture and biomedicine.
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Affiliation(s)
- Chenchen Cui
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yujie Song
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jun Liu
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hengtao Ge
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Qian Li
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hui Huang
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Linyong Hu
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hongmei Zhu
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yaping Jin
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yong Zhang
- 1] College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China [2] Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
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Pregnancy and Neonatal Care of SCNT Animals. PRINCIPLES OF CLONING 2014. [PMCID: PMC7149996 DOI: 10.1016/b978-0-12-386541-0.00009-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Kim GA, Oh HJ, Park JE, Kim MJ, Park EJ, Jo YK, Jang G, Kim MK, Kim HJ, Lee BC. Species-specific challenges in dog cloning. Reprod Domest Anim 2013; 47 Suppl 6:80-3. [PMID: 23279471 DOI: 10.1111/rda.12035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 07/06/2012] [Indexed: 11/28/2022]
Abstract
Somatic cell nuclear transfer (SCNT) is now an established procedure used in cloning of several species. SCNT in dogs involves multiple steps including the removal of the nuclear material, injection of a donor cell, fusion, activation of the reconstructed oocytes and finally transfer to a synchronized female recipient. There are therefore many factors that contribute to cloning efficiency. By performing a retrospective analysis of 2005-2012 published papers regarding dog cloning, we define the optimum procedure and summarize the specific feature for dog cloning.
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Affiliation(s)
- G A Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Korea
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Liu J, Luo Y, Ge H, Han C, Zhang H, Wang Y, Su J, Quan F, Gao M, Zhang Y. Anti-bacterial activity of recombinant human β-defensin-3 secreted in the milk of transgenic goats produced by somatic cell nuclear transfer. PLoS One 2013; 8:e65379. [PMID: 23799010 PMCID: PMC3683007 DOI: 10.1371/journal.pone.0065379] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Accepted: 04/24/2013] [Indexed: 11/28/2022] Open
Abstract
The present study was conducted to determine whether recombinant human β-defensin-3 (rHBD3) in the milk of transgenic goats has an anti-bacterial activity against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Streptococcus agalactiae (S. agalactiae) that could cause mastitis. A HBD3 mammary-specific expression vector was transfected by electroporation into goat fetal fibroblasts which were used to produce fourteen healthy transgenic goats by somatic cell nuclear transfer. The expression level of rHBD3 in the milk of the six transgenic goats ranged from 98 to 121 µg/ml at 15 days of lactation, and was maintained at 90–111 µg/ml during the following 2 months. Milk samples from transgenic goats showed an obvious inhibitory activity against E. coli, S. aureus and S. agalactiae in vitro. The minimal inhibitory concentrations of rHBD3 in milk against E. coli, S. aureus and S. agalactiae were 9.5–10.5, 21.8–23.0 and 17.3–18.5 µg/mL, respectively, which was similar to those of the HBD3 standard (P>0.05). The in vivo anti-bacterial activities of rHBD3 in milk were examined by intramammary infusion of viable bacterial inoculums. We observed that 9/10 and 8/10 glands of non-transgenic goats infused with S. aureus and E. coli became infected. The mean numbers of viable bacteria went up to 2.9×103 and 95.4×103 CFU/ml at 48 h after infusion, respectively; the mean somatic cell counts (SCC) in infected glands reached up to 260.4×105 and 622.2×105 cells/ml, which were significantly higher than the SCC in uninfected goat glands. In contrast, no bacteria was presented in glands of transgenic goats and PBS-infused controls, and the SSC did not significantly change throughout the period. Moreover, the compositions and protein profiles of milk from transgenic and non-transgenic goats were identical. The present study demonstrated that HBD3 were an effective anti-bacterial protein to enhance the mastitis resistance of dairy animals.
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Affiliation(s)
- Jun Liu
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Yan Luo
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Hengtao Ge
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Chengquan Han
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Hui Zhang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Yongsheng Wang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Jianmin Su
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Fusheng Quan
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Mingqing Gao
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
- * E-mail:
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Zhang H, Wu B, Liu H, Qiu M, Liu J, Zhang Y, Quan F. Improving development of cloned goat embryos by supplementing α-lipoic acid to oocyte in vitro maturation medium. Theriogenology 2013; 80:228-33. [PMID: 23743066 DOI: 10.1016/j.theriogenology.2013.03.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 03/28/2013] [Accepted: 03/29/2013] [Indexed: 10/26/2022]
Abstract
α-Lipoic acid (LA) is a powerful antioxidant for clinical therapy of some metabolic diseases, but there are few reports about the effect of LA on animal occyte in vitro maturation (IVM). The objective of this study is to investigate the effect of supplementing LA to IVM medium on subsequently developmental competence of goat cloning embryos after somatic cell nucleus transfer (SCNT). Twenty-five micromolars LA significantly increased 12% oocyte maturation rate from control 57.8% to treated group 69.8% (P < 0.05). The reconstructed rate of cloning embryos in LA supplement group (67.3%) was significantly higher than control (56.5%, P < 0.05). Although the SCNT embryo cleavage rates did not have significant difference between the two groups (42.0% vs. 47.9%, P > 0.05), LA supplement group had significantly higher blastocyst formation rate and hatched rate than control (24.0% vs. 18.4% and 37.0% vs. 30.9%, respectively, P < 0.05). In addition, supplementing LA significantly reduced the cellular apoptosis rate of nucleus transfer blastocysts by inhibiting the expression of apoptotic activators, such as Bax, Bad, Caspase-3, and CytC genes and promoting cumulus-oocyte complexes to synthesize glutathione (GSH) and express antioxidant enzymes such as GPX4 and SOD genes. In conclusion, supplement of LA to oocyte IVM medium could improve the maturation rate and antioxidant ability of oocytes and increase the developmental competence of oocytes after SCNT.
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Affiliation(s)
- Hengde Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
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20
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Srirattana K, Sripunya N, Sangmalee A, Imsoonthornruksa S, Liang Y, Ketudat-Cairns M, Parnpai R. Developmental potential of vitrified goat oocytes following somatic cell nuclear transfer and parthenogenetic activation. Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2012.10.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Liu J, Yang Z, Qiu M, Luo Y, Pang M, Wu Y, Zhang Y. Developmental potential of cloned goat embryos from an SSEA3(+) subpopulation of skin fibroblasts. Cell Reprogram 2013; 15:159-65. [PMID: 23441574 DOI: 10.1089/cell.2012.0073] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Previous studies have demonstrated that skin stem cells expressing the pluripotency marker stage-specific embryonic antigen 3 (SSEA3) are easier to reprogram into induced pluripotent stem cells (iPSCs) than skin fibroblasts. Furthermore, it is widely speculated that the undifferentiated state may make stem cells more efficient donor cells for somatic cell nuclear transfer (SCNT). In this study, we isolated SSEA3(+) cells from goat skin fibroblast cells (SFCs) using fluorescence-activated cell sorting (FACS) and examined expression of pluripotency markers and in vitro development of cloned embryos following SCNT. Results showed that cell clusters from SSEA3(+) cells were consistently positive for alkaline phosphatase staining and pluripotency markers, Nanog, Oct4, Sox2, and SSEA3. The cleavage rate of cloned embryos derived from SSEA3(+) cells did not differ compared with SFCs (70.5±0.8% and 68.4±2.1%, respectively), but was significantly higher compared with SSEA3(-) cells (64.9±1.6%, p<0.05). The blastocyst rate was significantly increased in the SSEA3(+) cell group compared with the SFC and SSEA3(-) cell groups (30.3±1.2% vs. 21.2±0.9 and 19.0±1.0%, respectively, p<0.05). The quality of cloned blastocysts from SSEA3(+) cells was higher compared with SFCs and SSEA3(-) cells, based on total cell number and number of apoptotic cells per blastocyst. These findings suggest that using SSEA3(+) cells as donors for SCNT is beneficial for enhancing in vitro development and quality of cloned goat embryos.
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Affiliation(s)
- Jun Liu
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, PR China
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Liu J, Luo Y, Zheng L, Liu Q, Yang Z, Wang Y, Su J, Quan F, Zhang Y. Establishment and characterization of fetal fibroblast cell lines for generating human lysozyme transgenic goats by somatic cell nuclear transfer. Transgenic Res 2013; 22:893-903. [PMID: 23335060 DOI: 10.1007/s11248-013-9688-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2012] [Accepted: 01/09/2013] [Indexed: 11/25/2022]
Abstract
This study was performed to qualify goat fetal fibroblast (GFF) cell lines for genetic modification and somatic cell nuclear transfer (SCNT) to produce human lysozyme (hLYZ) transgenic goats. Nine GFF cell lines were established from different fetuses, and the proliferative lifespan and chromosomal stability were analyzed. The results suggested that cell lines with a longer lifespan had stable chromosomes compared with those of cells lines with a shorter lifespan. According to the proliferative lifespan, we divided GFF cell lines into two groups: cell lines with a long lifespan (GFF1/2/7/8/9; group L) and cell lines with a short lifespan (GFF3/4/5/6; group S). Next, a hLYZ expression vector was introduced into these cell lines by electroporation. The efficiencies of colony formation, expansion in culture, and the quality of transgenic clonal cell lines were significant higher in group L than those in group S. The mean fusion rate and blastocyst rate in group L were higher than those in group S (80.3 ± 1.7 vs. 65.1 ± 4.2 % and 19.5 ± 0.6 vs. 15.1 ± 1.1 %, respectively, P < 0.05). After transferring cloned embryos into the oviducts of recipient goats, three live kids were born. PCR and Southern blot analyses confirmed integration of the transgene in cloned goats. In conclusion, the lifespan of GFF cell lines has a major effect on the efficiency to produce transgenic cloned goats. Therefore, the proliferative lifespan of primary cells may be used as a criterion to characterize the quality of cell lines for genetic modification and SCNT.
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Affiliation(s)
- Jun Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
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Pereira A, Feltrin C, Almeida K, Carneiro I, Avelar S, Neto AA, Sousa F, Melo C, Moura R, Teixeira D, Bertolini L, Freitas V, Bertolini M. Analysis of factors contributing to the efficiency of the in vitro production of transgenic goat embryos (Capra hircus) by handmade cloning (HMC). Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2012.07.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Liu J, Luo Y, Liu Q, Zheng L, Yang Z, Wang Y, Su J, Quan F, Zhang Y. Production of cloned embryos from caprine mammary epithelial cells expressing recombinant human β-defensin-3. Theriogenology 2012; 79:660-6. [PMID: 23267731 DOI: 10.1016/j.theriogenology.2012.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2012] [Revised: 11/20/2012] [Accepted: 11/25/2012] [Indexed: 11/16/2022]
Abstract
Transgenic animals that express antimicrobial agents in their milk can inhibit bacterial pathogens that cause mastitis. Our objective was to produce human β-defensin-3 (HBD3) transgenic embryos by nuclear transfer using goat mammary epithelial cells (GMECs) as donor cells. Three GMEC lines (GMEC1, GMEC2, and GMEC3) were transfected with a HBD3 mammary-specific expression vector by electroporation. There was a difference (P < 0.05) in the rate of geneticin-resistant colony formation among cell lines GMEC1, GMEC2, and GMEC3 (39 and 47 vs. 19 colonies per 3 × 10(6) cells, respectively). After inducing expression, the mRNA and protein of HBD3 were detected by reverse transcription polymerase chain reaction and Western blot analysis in transgenic cells. Transgenic clonal cells expressing HBD3 were used as donor cells to investigate development of cloned embryos. There were no significant differences in rates of cleavage or blastocyst formation of cloned embryos from transgenic (GMEC1T2 and GMEC2T3) and nontransgenic (GMEC1 and GMEC2) GMECs (72.3 ± 5.0%, 69.5 ± 2.3%, 61.8 ± 4.8%, and 70.0 ± 2%; and 16.8 ± 0.5%, 17.5 ± 0.7%, 16.7 ± 0.9%, and 17.5 ± 0.6%, respectively). However, the fusion rate, cleavage rate, and blastocyst formation rate of cloned embryos from a transgenic clonal cell line (GMEC2T6, 50.7 ± 2.1%, 55.5 ± 2.0%, and 11.1 ± 0.6%) were lower than those of other groups (P < 0.05). We concluded that genetic modification of GMECs might not influence the in vitro development of cloned embryos, but that some of the transgenic clonal cells were not suitable for nuclear transfer to produce transgenic goats, because of low developmental rates. However, transgenic GMECs expressing HBD3 might be used as donor cells for producing transgenic goats that express increased concentrations of β-defensins in their milk.
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Affiliation(s)
- Jun Liu
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi, China
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Development and Prospect of Cell-electrofusion Chip Technology. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2012. [DOI: 10.1016/s1872-2040(11)60533-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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