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Reproductive cycle and in vitro maturation of canine oocyte: A meta-analysis approach. Theriogenology 2022; 188:22-27. [DOI: 10.1016/j.theriogenology.2022.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 11/19/2022]
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2
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A Dystrophin Exon-52 Deleted Miniature Pig Model of Duchenne Muscular Dystrophy and Evaluation of Exon Skipping. Int J Mol Sci 2021; 22:ijms222313065. [PMID: 34884867 PMCID: PMC8657897 DOI: 10.3390/ijms222313065] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 12/12/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a lethal X-linked recessive disorder caused by mutations in the DMD gene and the subsequent lack of dystrophin protein. Recently, phosphorodiamidate morpholino oligomer (PMO)-antisense oligonucleotides (ASOs) targeting exon 51 or 53 to reestablish the DMD reading frame have received regulatory approval as commercially available drugs. However, their applicability and efficacy remain limited to particular patients. Large animal models and exon skipping evaluation are essential to facilitate ASO development together with a deeper understanding of dystrophinopathies. Using recombinant adeno-associated virus-mediated gene targeting and somatic cell nuclear transfer, we generated a Yucatan miniature pig model of DMD with an exon 52 deletion mutation equivalent to one of the most common mutations seen in patients. Exon 52-deleted mRNA expression and dystrophin deficiency were confirmed in the skeletal and cardiac muscles of DMD pigs. Accordingly, dystrophin-associated proteins failed to be recruited to the sarcolemma. The DMD pigs manifested early disease onset with severe bodywide skeletal muscle degeneration and with poor growth accompanied by a physical abnormality, but with no obvious cardiac phenotype. We also demonstrated that in primary DMD pig skeletal muscle cells, the genetically engineered exon-52 deleted pig DMD gene enables the evaluation of exon 51 or 53 skipping with PMO and its advanced technology, peptide-conjugated PMO. The results show that the DMD pigs developed here can be an appropriate large animal model for evaluating in vivo exon skipping efficacy.
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Duque Rodriguez M, Cittadini CO, Teplitz GM, De Stefano A, Lombardo DM, Salamone DF. Canine IVM With SOF Medium, Insulin-Transferrin-Selenium, and Low O 2 Tension Improves Oocyte Meiotic Competence and Decreases Reactive Oxygen Species Levels. Front Cell Dev Biol 2021; 9:694889. [PMID: 34557482 PMCID: PMC8453069 DOI: 10.3389/fcell.2021.694889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 08/03/2021] [Indexed: 11/28/2022] Open
Abstract
Assisted reproductive technologies in canine species are limited due to the low efficiency of in vitro maturation (IVM). Unlike other mammals, bitches ovulate oocytes in the germinal vesicle stage and complete metaphase II (MII) after 48–72 h in the oviductal environment and become fertilizable. For this reason, we compared two different IVM media, synthetic oviductal fluid (SOF) supplemented with 8% bovine serum albumin (BSA) or a mixture of 8% BSA–2.5% fetal bovine serum (FBS) and TCM-199 with 10% FBS. Additionally, we evaluated the effect of supplementation with insulin-transferrin-selenium (ITS) and low O2 tension in oocyte maturation, reactive oxygen species (ROS) levels, membrane integrity, and embryo development following parthenogenetic activation (PA). After 72 h of culture, SOF + BSA, SOF + BSA + FBS, and TCM-199 + FBS show 5, 7, and 4% of MII, respectively, without a statistical difference. However, SOF + BSA produced significantly higher degeneration rates compared to SOF + BSA + FBS (44 and 23%, respectively). Remarkably, supplementation with 1 μl/ml of ITS under high O2 tension demonstrated a beneficial effect by improving maturation rates up to 20% compared to the other groups. Low O2 tension increased maturation rates to 36.5%, although there were no statistical differences compared to high O2 tension in the presence of ITS. Lower ROS levels and higher integrity of the cytoplasmic membrane were found in the presence of ITS despite no differences in maturation rates under low O2 tension groups. Additionally, after PA, 1% development until the eight-cell stage was obtained after activation of in vitro-matured oocytes in the presence of ITS. Taken together, these results indicate that SOF supplemented with 8% BSA and 2.5% FBS is suitable for IVM of canine oocytes and ITS supplementation was beneficial for both high and low O2 tension. Furthermore, the addition of ITS in the cultured system lowers ROS levels and increases membrane integrity in domestic dog oocytes after IVM.
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Affiliation(s)
- Matteo Duque Rodriguez
- Facultad de Ciencias Agrarias, Politécnico Colombiano Jaime Isaza Cadavid, Medellin, Colombia.,Laboratorio Biotecnología Animal, Departamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Investigaciones en Producción Animal, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Camila O Cittadini
- Laboratorio Biotecnología Animal, Departamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Gabriela M Teplitz
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal, Catedra de Histología y Embriología, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Adrian De Stefano
- Laboratorio Biotecnología Animal, Departamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Daniel M Lombardo
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal, Catedra de Histología y Embriología, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Daniel F Salamone
- Laboratorio Biotecnología Animal, Departamento de Producción Animal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Investigaciones en Producción Animal, Universidad de Buenos Aires, Buenos Aires, Argentina
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Ciani F, Maruccio L, Cocchia N, d’Angelo D, Carotenuto D, Avallone L, Namagerdi AA, Tafuri S. Antioxidants in assisted reproductive technologies: An overview on dog, cat, and horse. J Adv Vet Anim Res 2021; 8:173-184. [PMID: 33860028 PMCID: PMC8043350 DOI: 10.5455/javar.2021.h500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 11/02/2020] [Accepted: 11/14/2020] [Indexed: 01/24/2023] Open
Abstract
Assisted reproductive technologies (ARTs) are widely used as a tool to improve reproductive performance in both humans and animals. In particular, in the veterinary field, ARTs are used to improve animal genetics, recover endangered animals, and produce offspring in the event of subfertility or infertility in males or females. However, the use of ARTs did not improve the fertilization rate in some animals due to various factors such as the difficulty in reproducing an anatomical and humoral substrate typical of the natural condition or due to the increase in catabolites and their difficult elimination. The in vitro environment allows the production and increase in the concentration of substances, including reactive oxygen species (ROS), which could be harmful to gametes. If produced in high concentration, the ROS becomes deleterious, both in vitro and in vivo systems. It has been seen that the use of antioxidants can help neutralize or counteract the production of ROS. The present study aims to report the latest findings regarding the use of antioxidants in ARTs of some domestic species, such as dogs, cats, and horses, compared to other animal species, such as cattle, in which ARTs have instead developed more widely.
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Affiliation(s)
- Francesca Ciani
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
- These authors contributed equally
| | - Lucianna Maruccio
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
- These authors contributed equally
| | - Natascia Cocchia
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Danila d’Angelo
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | | | - Luigi Avallone
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | | | - Simona Tafuri
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
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Qamar AY, Fang X, Kim MJ, Cho J. Myoinositol Supplementation of Freezing Medium Improves the Quality-Related Parameters of Dog Sperm. Animals (Basel) 2019; 9:ani9121038. [PMID: 31783679 PMCID: PMC6940725 DOI: 10.3390/ani9121038] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 01/28/2023] Open
Abstract
Simple Summary The generation of free radical reactive oxygen species during freeze–thaw procedures is one of the major factors affecting the function and survival of sperm. Myoinositol is the most important natural form of inositol produced in the human body. Researchers have attempted to exploit the antioxidant nature of myoinositol to treat human infertility issues via the improvement of sperm quality traits and fertilization rates. We investigated the potential role of myoinositol neutralizing free radicals produced during the cryopreservation of dog semen. Myoinositol supplementation in the freezing medium resulted in improved quality-related parameters of dog semen including percentage motility, viability, plasma membrane integrity, and chromatin integrity. Improvement in post-thaw semen quality was confirmed by the expression of genes related to apoptosis, nuclear integrity, and reactive oxygen species generation. Abstract Oxidative stress during freeze–thaw procedures results in reduced semen fertility. A decrease in free radical levels can improve the post-thaw sperm quality. We examined the effects of myoinositol supplementation in freezing medium on the structure and function of cryopreserved dog sperm. Pooled ejaculates were diluted with buffer without or with myoinositol (1 or 2 mg/mL). Analysis of fresh semen revealed that the optimal concentration of myoinositol was 1 mg/mL, and this concentration was used in further experiments. Post-thaw semen quality in the myoinositol-supplemented group was superior (p < 0.05) compared with that in the control group in terms of motility (57.9 ± 0.4% vs. 47.8 ± 0.2%), sperm viability (57.5 ± 0.5% vs. 44.6 ± 0.6%), intact plasma membrane (56.6 ± 0.4% vs. 46.2 ± 0.6%), and acrosome membrane (59.3 ± 0.5% vs. 51.8 ± 0.5%). In addition, sperm in the myoinositol-supplemented group showed a significantly lower expression of pro-apoptotic (BAX) and mitochondrial reactive oxygen species (ROS) modulator (ROMO1) genes but higher expression of anti-apoptotic (BCL2), and protamine-related (PRM2 and PRM3) genes compared with that in the control group. Therefore, myoinositol supplementation before freezing can protect against oxidative stress and improve post-thaw dog sperm quality.
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Affiliation(s)
- Ahmad Yar Qamar
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea; (A.Y.Q.); (X.F.)
- Department of Clinical Sciences, College of Veterinary and Animal Sciences, Jhang 35200, Sub-Campus University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Xung Fang
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea; (A.Y.Q.); (X.F.)
| | - Min Jung Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
- Correspondence: (M.J.K.); (J.C.); Tel.: +82-2-880-1180 (M.J.K.); +82-42-821-6788 (J.C.); Fax: +82-2-873-1269 (M.J.K.); +82-42-821-8903 (J.C.)
| | - Jongki Cho
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea; (A.Y.Q.); (X.F.)
- Correspondence: (M.J.K.); (J.C.); Tel.: +82-2-880-1180 (M.J.K.); +82-42-821-6788 (J.C.); Fax: +82-2-873-1269 (M.J.K.); +82-42-821-8903 (J.C.)
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da Rosa Filho RR, Angrimani DSR, Brito MM, Nichi M, Vannucchi CI, Lucio CF. Susceptibility of epididymal sperm against reactive oxygen species in dogs. Anim Biotechnol 2019; 32:92-99. [PMID: 31437098 DOI: 10.1080/10495398.2019.1657126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In order to add information to physiology of sperm maturation and help to underline future antioxidant supplementation treatment to epididymal sperm, the aim of this study was to evaluate susceptibility of caput, corpus and cauda epididymal sperm to different reactive oxygen species (ROS) in dogs. Epididymal sperm was separately collected from each segment (caput, corpus and cauda) and subjected to 4 different ROS-challenges: superoxide anion, hydrogen peroxide, hydroxyl radical, malondialdehyde (MDA) or maintained as control. After 30 min of incubation in each ROS, sperm was evaluated for sperm kinetics, plasma and acrossomal membrane integrity, mitochondrial activity and resistance to oxidative stress. Decreased total and progressive sperm motility and rapid velocity at epididymal corpus occurred after exposure to hydrogen peroxide, hydroxyl radical and MDA. However, for cauda epididymis, hydrogen peroxide and malondialdehyde promoted higher deleterious effect regarding sperm motility and velocity. Only at cauda epididymis MDA decreased sperm mitochondrial activity index and no kinetics alterations (motility or velocity) occurred after exposure to superoxide anion in corpus and cauda epididymis. In conclusion, corpus and cauda epididymal sperm are highly susceptible to deleterious effect of hydrogen peroxide, malondialdehyde and hydroxyl radical. In addition, epididymal canine sperm is relatively resistant to superoxide anion damage.
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Affiliation(s)
- Roberto R da Rosa Filho
- Department of Animal Reproduction - School of Veterinary Medicine and Animal Science, University of São Paulo, campus São Paulo, São Paulo, Brazil
| | - Daniel S R Angrimani
- Department of Animal Reproduction - School of Veterinary Medicine and Animal Science, University of São Paulo, campus São Paulo, São Paulo, Brazil
| | - Maíra M Brito
- Department of Animal Reproduction - School of Veterinary Medicine and Animal Science, University of São Paulo, campus São Paulo, São Paulo, Brazil
| | - Marcílio Nichi
- Department of Animal Reproduction - School of Veterinary Medicine and Animal Science, University of São Paulo, campus São Paulo, São Paulo, Brazil
| | - Camila I Vannucchi
- Department of Animal Reproduction - School of Veterinary Medicine and Animal Science, University of São Paulo, campus São Paulo, São Paulo, Brazil
| | - Cristina F Lucio
- Department of Animal Reproduction - School of Veterinary Medicine and Animal Science, University of São Paulo, campus São Paulo, São Paulo, Brazil
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7
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Lee SH, Oh HJ, Kim MJ, Kim GA, Setyawan EMN, Ra K, Abdillah DA, Lee BC. Dog cloning-no longer science fiction. Reprod Domest Anim 2019; 53 Suppl 3:133-138. [PMID: 30474338 DOI: 10.1111/rda.13358] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 09/21/2018] [Indexed: 01/23/2023]
Abstract
Since the generation of world's first cloned dog, Snuppy, in 2005, somatic cell nuclear transfer (SCNT) in dogs has been widely applied for producing several kinds of dogs with specific objectives. Previous studies have demonstrated that cloned dogs show normal characteristics in growth, blood parameters and behavioural aspect. Also, canine SCNT technique has been applied to propagate working dogs with excellent abilities in fields such as assistance of disabled people, drugs detection and rescue activity. Because dogs have similar habituation properties and share many characteristics including anatomic and physiological aspects with humans, they are also primary candidates for human disease models. Recently, transgenic dogs that express red fluorescent protein gene constitutively and green fluorescent protein gene conditionally have been generated. In addition, transgenic dogs with an overexpression of peroxisome proliferator-activated receptor-alpha in specific muscles were generated to enhance physical performance. In 2017, Snuppy was recloned with markedly increased pregnancy and delivery rates compared to the statistics from when Snuppy was first cloned. Such striking improvements in the cloning of dogs using SCNT procedures suggest that dog cloning could be applied in many fields of biomedical science for human diseases research, and the application of cloning is no longer science fiction.
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Affiliation(s)
- Seok Hee Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hyun Ju Oh
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Min Jung Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Geon A Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Erif Maha Nugraha Setyawan
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kihae Ra
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dimas Arya Abdillah
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
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8
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Dalmazzo A, Losano JDA, Rocha CC, Tsunoda RH, Angrimani DDSR, Mendes CM, Assumpção MEODÁ, Nichi M, Barnabe VH. Effects of Soy Lecithin Extender on Dog Sperm Cryopreservation. Anim Biotechnol 2018; 29:174-182. [PMID: 28658593 DOI: 10.1080/10495398.2017.1334662] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Semen cryopreservation is an essential biotechnology in canine reproduction and during the cryopreservation process commonly egg yolk are used. The discrepancy in the egg yolk composition and the potential risk of disease dissemination are obstacles for semen exportation and use. Therefore, studies aiming to substitute egg yolk are extremely important. In this context, soy lecithin contains a low-density lipoprotein fraction, is an interesting alternative. Thus, the objective of this study was to compare extenders based on soy lecithin (several concentrations and forms) with egg yolk during the cryopreservation process of dog sperm. For this purpose, we used twelve dogs. Semen was evaluated at different time points (after refrigeration, glycerolization, and thawing), by motility analysis (CASA) and functional tests (e.g., membrane integrity-eosin/nigrosin, acrosome integrity-fast green/Bengal rose, mitochondrial activity-3'3 diaminobenzidine, Chromatin susceptibility to acid-induced denaturation-SCSA, and susceptibility to oxidative stress-thiobarbituric acid reactive substances). The results indicated that egg yolk and lower concentrations of lecithin had similar effects on mitochondrial activity and motility. Thus, soy lecithin is a potentially viable alternative to egg yolk for the cryopreservation of dog semen.
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Affiliation(s)
- Andressa Dalmazzo
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - João Diego A Losano
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Carolina C Rocha
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Roberta H Tsunoda
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Daniel de Souza Ramos Angrimani
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Camilla M Mendes
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Mayra Elena O D Ávila Assumpção
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Marcilio Nichi
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Valquíria H Barnabe
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
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Abstract
This paper assesses whether cloning horses is ethical by reviewing ethical arguments against cloning of nonequine species and determining whether they apply to horses, analysing ethical arguments about horse cloning which do not apply to noncompetitive species and considering the ethical dilemmas faced by veterinarians involved in horse cloning. The author concludes that concerns about the health and welfare of cloned horses render the technique ethically problematic and that the onus is on those providing commercial equine cloning services to collate data and provide a stronger evidence base for ethical decision-making.
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Affiliation(s)
- M L H Campbell
- Department of Production and Population Health The Royal Veterinary College North Mymms Herts UK
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10
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Vieira NDMG, Losano JDDA, Angrimani DDSR, Kawai GKV, Bicudo LDC, Rui BR, da Silva BDCS, Assumpção MEOD, Nichi M. Induced sperm oxidative stress in dogs: Susceptibility against different reactive oxygen species and protective role of seminal plasma. Theriogenology 2018; 108:39-45. [DOI: 10.1016/j.theriogenology.2017.11.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/11/2017] [Accepted: 11/20/2017] [Indexed: 12/29/2022]
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Lee JH, Chun JL, Kim KJ, Kim EY, Kim DH, Lee BM, Han KW, Park KS, Lee KB, Kim MK. Effect of Acteoside as a Cell Protector to Produce a Cloned Dog. PLoS One 2016; 11:e0159330. [PMID: 27428333 PMCID: PMC4948914 DOI: 10.1371/journal.pone.0159330] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 06/30/2016] [Indexed: 11/18/2022] Open
Abstract
Somatic cell nuclear transfer (SCNT) is a well-known laboratory technique. The principle of the SCNT involves the reprogramming a somatic nucleus by injecting a somatic cell into a recipient oocyte whose nucleus has been removed. Therefore, the nucleus donor cells are considered as a crucial factor in SCNT. Cell cycle synchronization of nucleus donor cells at G0/G1 stage can be induced by contact inhibition or serum starvation. In this study, acteoside, a phenylpropanoid glycoside compound, was investigated to determine whether it is applicable for inducing cell cycle synchronization, cytoprotection, and improving SCNT efficiency in canine fetal fibroblasts. Primary canine fetal fibroblasts were treated with acteoside (10, 30, 50 μM) for various time periods (24, 48 and 72 hours). Cell cycle synchronization at G0/G1 stage did not differ significantly with the method of induction: acteoside treatment, contact inhibition or serum starvation. However, of these three treatments, serum starvation resulted in significantly increased level of reactive oxygen species (ROS) (99.5 ± 0.3%) and apoptosis. The results also revealed that acteoside reduced ROS and apoptosis processes including necrosis in canine fetal fibroblasts, and improved the cell survival. Canine fetal fibroblasts treated with acteoside were successfully arrested at the G0/G1 stage. Moreover, the reconstructed embryos using nucleus donor cells treated with acteoside produced a healthy cloned dog, but not the embryos produced using nucleus donor cells subjected to contact inhibition. In conclusion, acteoside induced cell cycle synchronization of nucleus donor cells would be an alternative method to improve the efficiency of canine SCNT because of its cytoprotective effects.
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Affiliation(s)
- Ji Hye Lee
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Ju Lan Chun
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Keun Jung Kim
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Eun Young Kim
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Dong-hee Kim
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Bo Myeong Lee
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Kil Woo Han
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Kang-Sun Park
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
| | - Kyung-Bon Lee
- Department of Biology Education, College of Education, Chonnam National University, Gwangju, Republic of Korea
| | - Min Kyu Kim
- Division of Animal & Dairy Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, Republic of Korea
- * E-mail:
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12
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Abstract
As man's best friend, dogs have an important position in human society. Ten years ago, we reported the first cloned dog, and his birth has raised various scientific issues, such as those related to health, reproduction, and life span. He has developed without any unique health issues. In this article, we summarize and present perspectives on canine cloning.
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Affiliation(s)
- Goo Jang
- 1 Laboratory of Theriogenology, Department of Veterinary Clinical Science, College of Veterinary Medicine and the Research Institute of Veterinary Science, Seoul National University , Seoul, Republic of Korea, 08826.,2 Emergence Center for Food-Medicine Personalized Therapy System, Advanced Institutes of Convergence Technology, Seoul National University , Gyeonggi-do, Republic of Korea, 16229
| | - ByeongChun Lee
- 1 Laboratory of Theriogenology, Department of Veterinary Clinical Science, College of Veterinary Medicine and the Research Institute of Veterinary Science, Seoul National University , Seoul, Republic of Korea, 08826
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13
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Reproduction and Advances in Reproductive Studies in Carnivores. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 753:205-39. [DOI: 10.1007/978-1-4939-0820-2_10] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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14
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Kim GA, Oh HJ, Park JE, Kim MJ, Park EJ, Lim SH, Kang SK, Jang G, Lee BC. Employing mated females as recipients for transfer of cloned dog embryos. Reprod Fertil Dev 2013; 25:700-6. [PMID: 22951104 DOI: 10.1071/rd11221] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 05/29/2012] [Indexed: 11/23/2022] Open
Abstract
It has been suggested that co-transferring parthenogenetic embryos could improve the pregnancy success rate with cloned embryos in mammals. As an alternative to co-transferring parthenotes, in dogs we employed recipient females that possessed in vivo-fertilised embryos as a result of mating to determine whether mated bitches could be suitable recipients for cloned embryos. The effect of using mated recipients on implantation and pregnancy rates of canine somatic cell nuclear transfer embryos was also determined. Cloned embryos were transferred into the oviducts of naturally synchronous females that had mated with male dogs before ovulation. The pregnancy rate appeared to be similar between mated recipients (50%) and non-mated recipients (28.57%; P>0.05). However, the delivery rate of cloned pups was significantly higher in mated recipients than non-mated recipients (10.53 vs 2.38%; P<0.05). A decrease in progesterone levels in the mated recipients before the due date induced natural delivery. However, cloned pups in non-mated recipients were delivered by Caesarean section because the fall in progesterone concentration in these females did not occur until the due date. The present study demonstrated for the first time that mated female dogs can be used as recipients for cloned embryos.
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Affiliation(s)
- Geon A Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 151-744, Korea
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Abstract
Cloning is a process that produces genetically identical organisms. However, the genomic degree of genetic resemblance in clones needs to be determined. In this report, the genomes of a cloned dog and its donor were compared. Compared with a human monozygotic twin, the genome of the cloned dog showed little difference from the genome of the nuclear donor dog in terms of single nucleotide variations, chromosomal instability, and telomere lengths. These findings suggest that cloning by somatic cell nuclear transfer produced an almost identical genome. The whole genome sequence data of donor and cloned dogs can provide a resource for further investigations on epigenetic contributions in phenotypic differences.
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Saadeldin IM, Choi W, Roibas Da Torre B, Kim B, Lee B, Jang G. Embryonic development and implantation related gene expression of oocyte reconstructed with bovine trophoblast cells. J Reprod Dev 2012; 58:425-31. [PMID: 22522228 DOI: 10.1262/jrd.11-112h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The temporal progressive increase of interferon tau (IFNτ) secretion from the bovine trophoblast is a major embryonic signal of establishing pregnancy. Here, we cultured and isolated bovine trophoblast cells (BTs) from IVM/IVF oocytes and in vitro produced blastocysts, used them, for the first time, as donor cells for nuclear transfer and compared them with adult fibroblasts (AFs) as donor cells. BTs were reprogrammed in enucleated oocytes to blastocysts with similar efficiency to AFs (14.5% and 15.6% respectively, P≤0.05). The levels of IFNτ, CDX2 and OCT4 expression in IVF-, BT- and AF-derived blastocysts were analyzed using reverse transcription polymerase chain reaction and reverse transcription quantitative polymerase chain reaction (RT-PCR and RT-qPCR). IVF-produced embryos were used as reference to analyze the linear progressive expression of IFNτ through mid, expanded and hatching blastocysts. RT-PCR and RT-qPCR studies showed that IFNτ expression was higher in BT-derived blastocysts than IVF- and AF-derived blastocysts. Both IVF- and BT-derived blastocysts showed a progressive increase in IFNτ expression as blastocyst development advanced when it compared with AF-derived blastocysts. OCT4 was inversely related with IFNτ expression, while CDX2 was found to be directly related with IFNτ temporal expression. Persistence of high expression of IFNτ and CDX2 was found to be higher in BT-derived embryos than in IVF- or AF-derived embryos. In conclusion, using BTs expressing IFNτ as donor cells for bovine NT could be a useful tool for understanding the IFNτ genetics and epigenetics.
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Affiliation(s)
- Islam M Saadeldin
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, Republic of Korea
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Imsoonthornruksa S, Sangmalee A, Srirattana K, Parnpai R, Ketudat-Cairns M. Development of intergeneric and intrageneric somatic cell nuclear transfer (SCNT) cat embryos and the determination of telomere length in cloned offspring. Cell Reprogram 2012; 14:79-87. [PMID: 22217197 DOI: 10.1089/cell.2011.0054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Somatic cell nuclear transfer (SCNT) holds potential as a useful tool for agricultural and biomedical applications. In vitro development of marbled cat intergeneric SCNT reconstructed into domestic cat cytoplast revealed that cloned, marbled cat embryo development was blocked at the morula stage. No pregnancies resulted from the transfer of one- to eight-cell stage embryos into domestic cat surrogate mothers. This suggested that abnormalities occurred in the cloned marbled cat embryos, which may be associated with incomplete reprogramming during early embryo development. Two pregnancies were established in surrogate mothers that received cloned domestic cat embryos, but SCNT offspring developed abnormally. Some specific phenotypes that were observed included incomplete abdominal wall disclosure, improper fetal development. In addition, some of the fetuses were mummified or stillbirths. The two live births died within 5 days. Telomere lengths of cloned kittens as determined by qualtitative polymerase chain reaction (qPCR) were inconclusive: some were found to be shorter, longer, or the same as donor control cells. Our findings support the hypothesis that telomere lengths do not govern the health of these cloned animals. A lack of complete reprogramming may lead to developmental failure and the abnormalities observed in cloned offspring.
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Affiliation(s)
- Sumeth Imsoonthornruksa
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
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Hong SG, Oh HJ, Park JE, Kim MJ, Kim GA, Park EJ, Koo OJ, Kang SK, Jang G, Lee BC. Production of offspring from cloned transgenic RFP female dogs and stable generational transmission of the RFP gene. Genesis 2011; 49:835-40. [PMID: 21630416 DOI: 10.1002/dvg.20772] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Revised: 05/10/2011] [Accepted: 05/23/2011] [Indexed: 11/06/2022]
Abstract
The purpose of this study was to analyze the reproductive ability of transgenic female dogs born bysomatic cell nuclear transfer and to determine inheritance of the red fluorescent protein (RFP) transgene. The four founder transgenic bitches (F0) reached puberty at 340.8 ± 39.6 days after birth and were bred with wild-type male dogs by natural mating or by artificial insemination. The bitches all became pregnant and successfully delivered 13 puppies (F1), of which two females were bred with wild-type dogs to deliver 7 offspring (F2), including 1 stillbirth. Among the 19 live offspring, 10 puppies showed emission of RFP under UV light and the presence of the RFP transgene was confirmed by genomic PCR and Southern blot analyses. In conclusion, transgenic RFP female dogs exhibited normal reproductive ability and expression of the transgene was demonstrated in F1 and F2 generations.
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