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Zare M, Mirhoseini SZ, Ghovvati S, Yakhkeshi S, Hesaraki M, Barati M, Sayyahpour FA, Baharvand H, Hassani SN. The constitutively active pSMAD2/3 relatively improves the proliferation of chicken primordial germ cells. Mol Reprod Dev 2023. [PMID: 37379342 DOI: 10.1002/mrd.23689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 05/06/2023] [Accepted: 05/15/2023] [Indexed: 06/30/2023]
Abstract
In many multicellular organisms, mature gametes originate from primordial germ cells (PGCs). Improvements in the culture of PGCs are important not only for developmental biology research, but also for preserving endangered species, and for genome editing and transgenic animal technologies. SMAD2/3 appear to be powerful regulators of gene expression; however, their potential positive impact on the regulation of PGC proliferation has not been taken into consideration. Here, the effect of TGF-β signaling as the upstream activator of SMAD2/3 transcription factors was evaluated on chicken PGCs' proliferation. For this, chicken PGCs at stages 26-28 Hamburger-Hamilton were obtained from the embryonic gonadal regions and cultured on different feeders or feeder-free substrates. The results showed that TGF-β signaling agonists (IDE1 and Activin-A) improved PGC proliferation to some extent while treatment with SB431542, the antagonist of TGF-β, disrupted PGCs' proliferation. However, the transfection of PGCs with constitutively active SMAD2/3 (SMAD2/3CA) resulted in improved PGC proliferation for more than 5 weeks. The results confirmed the interactions between overexpressed SMAD2/3CA and pluripotency-associated genes NANOG, OCT4, and SOX2. According to the results, the application of SMAD2/3CA could represent a step toward achieving an efficient expansion of avian PGCs.
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Affiliation(s)
- Masumeh Zare
- Department of Animal Sciences, Faculty of Agriculture, University of Guilan, Rasht, Guilan, Iran
| | | | - Shahrokh Ghovvati
- Department of Animal Sciences, Faculty of Agriculture, University of Guilan, Rasht, Guilan, Iran
| | - Saeed Yakhkeshi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mahdi Hesaraki
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mojgan Barati
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Forough Azam Sayyahpour
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Hossein Baharvand
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- Department of Developmental Biology, School of Basic Sciences and Advanced Technologies in Biology, University of Science and Culture, Tehran, Iran
| | - Seyedeh-Nafiseh Hassani
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
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2
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Effects of Calcium Lactate on the Development of Chicken Embryos in a Shell-less Culture System up to Day Seventeen of Incubation. J Poult Sci 2022; 59:168-174. [PMID: 35528375 PMCID: PMC9039142 DOI: 10.2141/jpsa.0210024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 06/18/2021] [Indexed: 11/21/2022] Open
Abstract
This study examined the effects of calcium lactate on the development of chicken embryos in a shell-less culture system (cSLCS) up to the seventeenth day of incubation. In the presence of calcium lactate, a significant reduction in embryo viability was observed during the first week of incubation in cSLCS. On day 17 of embryo development, no significant difference was observed in the blood plasma calcium concentration or tibia bone density between cSLCS and intact control embryos, whereas the tibia length was significantly shorter in cSLCS embryos than in the intact control. These results suggest that calcium lactate supplementation in cSLCS supports bone formation in developing chicken embryos, but has adverse effects on the viability of embryos, particularly during the first week of embryo development.
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3
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Improving germline transmission efficiency in chimeric chickens using a multi-stage injection approach. PLoS One 2021; 16:e0247471. [PMID: 34086696 PMCID: PMC8177527 DOI: 10.1371/journal.pone.0247471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 05/18/2021] [Indexed: 11/19/2022] Open
Abstract
Although different strategies have been developed to generate transgenic poultry, low efficiency of germline transgene transmission has remained a challenge in poultry transgenesis. Herein, we developed an efficient germline transgenesis method using a lentiviral vector system in chickens through multiple injections of transgenes into embryos at different stages of development. The embryo chorioallantoic membrane (CAM) vasculature was successfully used as a novel route of gene transfer into germline tissues. Compared to the other routes of viral vector administration, the embryo’s bloodstream at Hamburger-Hamilton (HH) stages 14–15 achieved the highest rate of germline transmission (GT), 7.7%. Single injection of viral vectors into the CAM vasculature resulted in a GT efficiency of 2.7%, which was significantly higher than the 0.4% obtained by injection into embryos at the blastoderm stage. Double injection of viral vectors into the bloodstream at HH stages 14–15 and through CAM was the most efficient method for producing germline chimeras, giving a GT rate of 13.6%. The authors suggest that the new method described in this study could be efficiently used to produce transgenic poultry in virus-mediated gene transfer systems.
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4
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Abstract
Ex ovo culture of avian embryos can be applied not only to embryology but also to various fields of basic research such as embryo manipulation, toxicology, and regenerative medicine. The windowing method, which facilitates various manipulations and observations by opening a hole in one part of the eggshell, and culture systems using surrogate eggshells, are widely used. Despite this, biology lessons in high schools cover shell-less culture systems, which involve the development of avian embryos in artificial vessels, such as rice bowls, without using surrogate eggshells. However, as embryo development stops at its early stages in this method, it is not possible to continuously observe the development of the embryo. This led to attempts to develop an embryo culture method using a complete artificial culture vessel that does not use surrogate eggshells, and Kamihira et al. (1998) succeeded in hatching quail embryos in an artificial culture vessel using polytetrafluoroethylene membranes. In addition, Tahara succeeded in hatching chick embryos in artificial culture vessels that used cling film made of polymethylpentene and reported their detailed methodology (Tahara and Obara, 2014). These technologies are being applied not only to school education but also to various fields of research.
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Lee J, Kim DH, Lee K. Current Approaches and Applications in Avian Genome Editing. Int J Mol Sci 2020; 21:ijms21113937. [PMID: 32486292 PMCID: PMC7312999 DOI: 10.3390/ijms21113937] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 01/02/2023] Open
Abstract
Advances in genome-editing technologies and sequencing of animal genomes enable researchers to generate genome-edited (GE) livestock as valuable animal models that benefit biological researches and biomedical and agricultural industries. As birds are an important species in biology and agriculture, their genome editing has gained significant interest and is mainly performed by using a primordial germ cell (PGC)-mediated method because pronuclear injection is not practical in the avian species. In this method, PGCs can be isolated, cultured, genetically edited in vitro, and injected into a recipient embryo to produce GE offspring. Recently, a couple of GE quail have been generated by using the newly developed adenovirus-mediated method. Without technically required in vitro procedures of the PGC-mediated method, direct injection of adenovirus into the avian blastoderm in the freshly laid eggs resulted in the production of germ-line chimera and GE offspring. As more approaches are available in avian genome editing, avian research in various fields will progress rapidly. In this review, we describe the development of avian genome editing and scientific and industrial applications of GE avian species.
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Affiliation(s)
- Joonbum Lee
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA; (J.L.); (D.-H.K.)
- The Ohio State University Interdisciplinary Human Nutrition Program, The Ohio State University, Columbus, OH 43210, USA
| | - Dong-Hwan Kim
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA; (J.L.); (D.-H.K.)
| | - Kichoon Lee
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA; (J.L.); (D.-H.K.)
- The Ohio State University Interdisciplinary Human Nutrition Program, The Ohio State University, Columbus, OH 43210, USA
- Correspondence: ; Tel.: +1-614-688-7963
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6
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Liang Y, Li L, Li Q, Liang H, Jin L, Wang L, Guan BO. Photoacoustic computed tomography by using a multi-angle scanning fiber-laser ultrasound sensor. OPTICS EXPRESS 2020; 28:8744-8752. [PMID: 32225493 DOI: 10.1364/oe.387675] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Photoacoustic computed tomography (PACT) can ultrasonically image optical absorbers in biological tissues by using a linear piezoelectric transducer array, but some features can not be visualized as a result of the limited acceptance angle. The optical ultrasound sensors for photoacoustic imaging have received great interests, because of their compact sizes, comparable sensitivities to their electric counterparts, as well as the extended field/angle-of-view. In this work, we have developed a PACT system based on a fiber-laser based ultrasound sensor. Two-dimensional imaging was performed by horizontally scanning the sensor and image reconstruction via back projection, and three-dimensional imaging was further achieved by repeating such scanning process at multiple angles, based on inverse Radon transform. The axial and lateral resolutions are 93 and 220 µm in three-dimensional imaging. The fiber-based PACT can resolve more features than that with a piezoelectric transducer array, taking advantage of the dual-60-degree vision angles of the sensor.
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7
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Affiliation(s)
- M. Naito
- National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, Japan,
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8
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Kagami H, Hanada H. Current knowledge of sexual differentiation in domestic fowl. WORLD POULTRY SCI J 2019. [DOI: 10.1079/wps19970012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- H. Kagami
- National Institute of Animal Industry, Tsukuba Norindanchi, P.O. Box 5, Ibaraki 305, Japan
| | - H. Hanada
- National Institute of Animal Industry, Tsukuba Norindanchi, P.O. Box 5, Ibaraki 305, Japan
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9
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Nakamura Y, Nakane Y, Tsudzuki M. Developmental stages of the blue-breasted quail (Coturnix chinensis). Anim Sci J 2019; 90:35-48. [PMID: 30370683 PMCID: PMC6587530 DOI: 10.1111/asj.13119] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/17/2018] [Accepted: 09/10/2018] [Indexed: 11/30/2022]
Abstract
Chickens and Japanese quail (Coturnix japonica) have traditionally been the primary avian models in developmental biology research. Recently, the blue-breasted quail (Coturnix chinesis), the smallest species in the order Galliformes, has been proposed as an excellent candidate model in avian developmental studies owing to its precocious and prolific properties. However, data on the embryonic development of blue-breasted quail are scarce. Here, we developed a normal developmental series for the blue-breasted quail based on developmental features. The blue-breasted quail embryos take 17 days to reach the hatching period at 37.7°C. We documented specific periods of incubation in which significant development occurred, and created a 39-stage developmental series. The developmental series for the blue-breasted quail was almost identical to that for chickens and Japanese quail in the earlier stages of development (stages 1-16). Our staging series is especially useful at later stages of development (stages 34-39) of blue-breasted quail embryos as a major criterion of staging in this phase of development was the weight of embryos and the length of third toes.
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Affiliation(s)
- Yoshiaki Nakamura
- Laboratory of Animal Breeding and GeneticsGraduate School of Biosphere ScienceHiroshima UniversityHigashi‐HiroshimaHiroshimaJapan
- Japanese Avian Bioresource Project Research CenterHiroshima UniversityHigashi‐HiroshimaHiroshimaJapan
| | - Yoshifumi Nakane
- Institute of Laboratory AnimalsGraduate School of MedicineKyoto UniversitySakyouKyotoJapan
| | - Masaoki Tsudzuki
- Laboratory of Animal Breeding and GeneticsGraduate School of Biosphere ScienceHiroshima UniversityHigashi‐HiroshimaHiroshimaJapan
- Japanese Avian Bioresource Project Research CenterHiroshima UniversityHigashi‐HiroshimaHiroshimaJapan
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10
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Direct imaging of capillaries reveals the mechanism of arteriovenous interlacing in the chick chorioallantoic membrane. Commun Biol 2018; 1:235. [PMID: 30588514 PMCID: PMC6303259 DOI: 10.1038/s42003-018-0229-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 11/13/2018] [Indexed: 11/08/2022] Open
Abstract
Understanding vascular development in vertebrates is an important scientific endeavor. Normal vasculatures generally start off as a disorganized capillary lattice which progressively matures into a well-organized vascular loop comprising a hierarchy of arteries and veins. One striking feature of vascular development is the interlacing of arteries and veins. How arteries and veins manage to avoid themselves and interlace with such a perfect architecture is not understood. Here we present a detailed view of the development of the vasculature in the chorioallantoic membrane of the chicken embryo. We find that the origin of arteriovenous interlacing lies in the presence of an increased hemodynamic resistance at the distal part of the arteries due to vascular flattening onto the ectodermal surface. This reduces the vascular conductance distally, thus repelling veins away. In more proximal parts, vessels round off into cylinders and the increased flow attracts veins.
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11
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Abstract
Primordial germ cells (PGCs) generate new individuals through differentiation, maturation and fertilization. This means that the manipulation of PGCs is directly linked to the manipulation of individuals, making PGCs attractive target cells in the animal biotechnology field. A unique biological property of avian PGCs is that they circulate temporarily in the vasculature during early development, and this allows us to access and manipulate avian germ lines. Following the development of a technique for transplantation, PGCs have become central to avian biotechnology, in contrast to the use of embryo manipulation and subsequent transfer to foster mothers, as in mammalian biotechnology. Today, avian PGC transplantation combined with recent advanced manipulation techniques, including cell purification, cryopreservation, depletion, and long-term culture in vitro, have enabled the establishment of genetically modified poultry lines and ex-situ conservation of poultry genetic resources. This chapter introduces the principles, history, and procedures of producing avian germline chimeras by transplantation of PGCs, and the current status of avian germline modification as well as germplasm cryopreservation. Other fundamental avian reproductive technologies are described, including artificial insemination and embryo culture, and perspectives of industrial applications in agriculture and pharmacy are considered, including poultry productivity improvement, egg modification, disease resistance impairment and poultry gene "pharming" as well as gene banking.
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12
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Kagami H. Perspectives on avian stem cells for poultry breeding. Anim Sci J 2016; 87:1065-75. [PMID: 27169384 PMCID: PMC5084753 DOI: 10.1111/asj.12620] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/08/2015] [Accepted: 12/10/2015] [Indexed: 11/28/2022]
Abstract
Stem cells have prulipotency to differentiate into many types of cell lineages. Recent progress of avian biotechnology enabled us to analyze the developmental fate of the stem cells: embryonic stem cells / primordial germ cells (PGCs). The stem cells were identified in the central area of the area pellucida of the stage X blastoderms. These cells could be applied for production of germline chimeras and organ regeneration. Generation of medical substrate in transgenic chickens has considerable interests in pharmaceuticals. Sex alteration of the offspring should be enormously beneficial to the poultry industry. Fertilization of the sex-reversed sperm could lead to sexual alteration of the offspring. These strategies using stem cells / PGCs should be one of the most powerful tools for future poultry breeding.
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Affiliation(s)
- Hiroshi Kagami
- Laboratory of Animal Developmental Genetics, Faculty of AgricultureShinshu University, MinamiminowaNaganoJapan
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13
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Kawashima T, Ahmed WMS, Nagino K, Ubuka T, Tsutsui K. Avian Test Battery for the Evaluation of Developmental Abnormalities of Neuro- and Reproductive Systems. Front Neurosci 2016; 10:296. [PMID: 27445667 PMCID: PMC4927565 DOI: 10.3389/fnins.2016.00296] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 06/13/2016] [Indexed: 01/16/2023] Open
Abstract
Most of the currently used toxicity assays for environmental chemicals use acute or chronic systemic or reproductive toxicity endpoints rather than neurobehavioral endpoints. In addition, the current standard approaches to assess reproductive toxicity are time-consuming. Therefore, with increasing numbers of chemicals being developed with potentially harmful neurobehavioral effects in higher vertebrates, including humans, more efficient means of assessing neuro- and reproductive toxicity are required. Here we discuss the use of a Galliformes-based avian test battery in which developmental toxicity is assessed by means of a combination of chemical exposure during early embryonic development using an embryo culture system followed by analyses after hatching of sociosexual behaviors such as aggression and mating and of visual memory via filial imprinting. This Galliformes-based avian test battery shows promise as a sophisticated means not only of assessing chemical toxicity in avian species but also of assessing the risks posed to higher vertebrates, including humans, which are markedly sensitive to nervous or neuroendocrine system dysfunction.
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Affiliation(s)
- Takaharu Kawashima
- Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies Tsukuba, Japan
| | - Walaa M S Ahmed
- Center for Environmental Health Sciences, National Institute for Environmental StudiesTsukuba, Japan; Department of Clinical Pathology, Faculty of Veterinary Medicine, Beni-Suef UniversityBeni-Suef, Egypt
| | - Koki Nagino
- Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental StudiesTsukuba, Japan; Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life Science, Waseda UniversityTokyo, Japan
| | - Takayoshi Ubuka
- Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life Science, Waseda UniversityTokyo, Japan; Jeffrey Cheah School of Medicine and Health Sciences, Brain Research Institute Monash Sunway, Monash University MalaysiaBandar Sunway, Malaysia
| | - Kazuyoshi Tsutsui
- Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life Science, Waseda University Tokyo, Japan
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Haraguchi S, Matsubara Y, Hosoe M. Chick embryos can form teratomas from microinjected mouse embryonic stem cells. Dev Growth Differ 2015; 58:194-204. [PMID: 26691605 DOI: 10.1111/dgd.12260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 10/29/2015] [Accepted: 11/10/2015] [Indexed: 01/12/2023]
Abstract
We examined whether chick embryos are a suitable experimental model for the evaluation of pluripotency of stem cells. Mouse embryonic stem cells (mESCs) expressing the reporter gene, LacZ or GFP were injected into the subgerminal cavity of blastoderms (freshly oviposited) or the marginal vein of chick embryos (2 days of incubation). Injected mESCs were efficiently incorporated into the body and extra-embryonic tissues of chick embryos and formed small clusters. Increased donor cell numbers injected were positively associated with the efficiency of chimera production, but with lower viability. A single mESC injected into the blastoderm proliferated into 34.7 ± 3.8 cells in 3 days, implying that the chick embryo provides an optimal environment for the growth of xenogenic cells. In the embryo body, mESCs were interspersed as small clustered chimeras in various tissues. Teratomas were observed in the yolk sac and the brain with three germ layers. In the yolk sac, clusters of mESCs gradually increased in volume and exhibited varied morphology such as a water balloon-like or dark-red solid mass. However, mESCs in the brain developed into a large soft tissue mass of whitish color and showed a tendency to differentiate into ectodermal lineage cells, including primitive neural ectodermal and neuronal cells expressing the neurofilament protein. These results indicate that chick embryos are useful for the teratoma formation assays of mESCs and have a broad-range potential as an experimental host model.
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Affiliation(s)
- Seiki Haraguchi
- Animal Breeding and Reproduction Division, NARO Institute of Livestock and Grassland Science, 2 Ikenodai, Tsukuba, Ibaraki, 305-0901, Japan
| | - Yuko Matsubara
- Animal Development and Differentiation Research Unit, National Institute of Agrobiological Sciences, 2-1-2 Kannondai, Tsukuba, Ibaraki, 305-8602, Japan
| | - Misa Hosoe
- Animal Development and Differentiation Research Unit, National Institute of Agrobiological Sciences, 2-1-2 Kannondai, Tsukuba, Ibaraki, 305-8602, Japan
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15
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Long-term culture of chicken primordial germ cells isolated from embryonic blood and production of germline chimaeric chickens. Anim Reprod Sci 2015; 153:50-61. [DOI: 10.1016/j.anireprosci.2014.12.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 11/29/2014] [Accepted: 12/01/2014] [Indexed: 11/19/2022]
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17
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Expression of GFP Gene in Gonads of Chicken Embryos by Transfecting Primordial Germ Cells <i>in vitro </i>or <i>in vivo </i>using the PiggyBac Transposon Vector System. J Poult Sci 2015. [DOI: 10.2141/jpsa.0140197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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18
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A Novel Shell-less Culture System for Chick Embryos Using a Plastic Film as Culture Vessels. J Poult Sci 2014. [DOI: 10.2141/jpsa.0130043] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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19
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Simple Culture System for Bobwhite Quail and Japanese Quail Embryos from the Blastoderm Stage to Hatching using a Single Surrogate Eggshell. J Poult Sci 2014. [DOI: 10.2141/jpsa.0130118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Sheng G. Day-1 chick development. Dev Dyn 2013; 243:357-67. [DOI: 10.1002/dvdy.24087] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 10/22/2013] [Accepted: 10/22/2013] [Indexed: 02/04/2023] Open
Affiliation(s)
- Guojun Sheng
- Laboratory for Early Embryogenesis; RIKEN Center for Developmental Biology; Kobe Hyogo Japan
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21
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22
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Li BC, Li W, Chen H, Zhang Y, Zhang ZT, Wang XY, Gao B, Dou TC, Wang KH. The influencing factor of in vitro fertilization and embryonic transfer in the domestic fowl (Gallus domesticus). Reprod Domest Anim 2012; 48:368-72. [PMID: 22913565 DOI: 10.1111/j.1439-0531.2012.02158.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study was conducted to explore the influencing factors of ova in vitro fertilization (IVF) and transfer of the fertilized ova into the oviduct of recipient hens. The efficiency of fertilization was compared using three aspects: (i) the different time of ova collection and transfer, (ii) egg-laying period of recipient hen; and (iii) semen volume. The following results are observed: 72%, 40% and 0% of ova were found in ovarian sac in 30∼40 min, 50∼60 min and more than 90 min post-oviposition, respectively; 20%, 18%, 14% and 5.8% of ova were fertilized with 0.1, 0.2, 0.5 and 1.0 ml semen, respectively; and 33% and 100% of healthy chickens were hatched from fertile ova with 0.1 and 0.5 ml of semen, respectively. All oocytes obtained from ovary and mid-oviduct were unfertilized. Embryos were transferred into recipient hens 30 min ± 10 min post-oviposition, and 70% of shelled eggs were produced. There were no eggs produced in the other transfer times. This demonstrated that live chicken can be obtained by IVF of ova collected shortly after oviposition. It was important that the ovum was transferred into the oviduct infundibulum of recipient hens immediately or shortly after oviposition.
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Affiliation(s)
- B C Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
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23
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Tseng CL, Peng CL, Huang JY, Chen JC, Lin FH. Gelatin nanoparticles as gene carriers for transgenic chicken applications. J Biomater Appl 2012; 27:1055-65. [PMID: 22262575 DOI: 10.1177/0885328211434089] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
To develop a safe and effective nonviral gene delivery system for transgenic chicken manipulation, we developed gelatin nanocarriers using a reporter plasmid (pEGFP-C1; enhanced green fluorescence protein, EGFP) that expressed EGFP. pEGFP-C1-containing gelatin nanoparticles (GP/pEGFP) were prepared using a water-ethanol solvent displacement method and characterized by size, surface charge, DNA loading, and DNA protection ability. For gene delivery, pEGFP-C1 was stably and efficiently encapsulated in GPs that were approximately 300 nm in diameter with a slight negative surface charge, which was prepared from gelatin solution at pH 8.0. Approximately, 85% of the plasmid DNA was encapsulated in the GPs. Electrophoresis results showed that the GPs provided protection against DNase I digestion. We used the GP/pEGFP as a vector to transfect cells and chicken embryos. The vector was nontoxic to cells, and GFP expression was effectively expressed 24 h after HeLa cell transfection. Direct injection was adapted for vector transport to the chicken embryo; injection in the area opaca (Ao) of the egg resulted in the highest hatching rate without affecting embryo development. GFP gene expression in embryo sections was observed 4 days after injection. The results of this study demonstrate that GPs are a suitable nonviral vector for delivering exogenous genes for transgenic chicken manipulation.
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Affiliation(s)
- Ching-Li Tseng
- Division of Medical Engineering Research, National Health Research Institutes, Zhunan Town, Miaoli County 350, Taiwan, ROC
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Expression of GFP Gene in Cultured PGCs Isolated from Embryonic Blood and Incorporation into Gonads of Recipient Embryos. J Poult Sci 2012. [DOI: 10.2141/jpsa.011094] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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25
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Identification of Germline Chimeric Chickens Produced by Transfer of Primordial Germ Cells Using a Hinai-dori-specific Microsatellite Marker. J Poult Sci 2011. [DOI: 10.2141/jpsa.011045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Yu F, Ding LJ, Sun GB, Sun PX, He XH, Ni LG, Li BC. Transgenic sperm produced by electrotransfection and allogeneic transplantation of chicken fetal spermatogonial stem cells. Mol Reprod Dev 2010; 77:340-7. [DOI: 10.1002/mrd.21147] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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27
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Nakamura Y, Usui F, Miyahara D, Mori T, Ono T, Takeda K, Nirasawa K, Kagami H, Tagami T. Efficient system for preservation and regeneration of genetic resources in chicken: concurrent storage of primordial germ cells and live animals from early embryos of a rare indigenous fowl (Gifujidori). Reprod Fertil Dev 2010; 22:1237-46. [DOI: 10.1071/rd10056] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Accepted: 06/15/2010] [Indexed: 01/08/2023] Open
Abstract
The unique accessibility of chicken primordial germ cells (PGCs) during early development provides the opportunity to combine the reproduction of live animals with genetic conservation. Male and female Gifujidori fowl (GJ) PGCs were collected from the blood of early embryos, and cryopreserved in liquid nitrogen for >6 months until transfer. Manipulated GJ embryos were cultured until hatching; fertility tests indicated that they had normal reproductive abilities. Embryos from two lines of White Leghorn (24HS, ST) were used as recipients for chimera production following blood removal. The concentration of PGCs in the early embryonic blood of 24HS was significantly higher than in ST (P < 0.05). Frozen–thawed GJ PGCs were microinjected into the bloodstream of same-sex recipients. Offspring originating from GJ PGCs in ST recipients were obtained with a higher efficiency than those originating from GJ PGCs in 24HS recipients (23.3% v. 3.1%). Additionally, GJ progeny were successfully regenerated by crossing germline chimeras of the ST group. In conclusion, the cryogenic preservation of PGCs from early chicken embryos was combined with the conservation of live animals.
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In vitro Culture of Testicular and Ovarian Gonocytes Obtained from 19-day Incubated Chicken Embryos and Subsequent Colonization into Gonads of Recipient Embryos. J Poult Sci 2010. [DOI: 10.2141/jpsa.010095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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29
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Long Term in vitro Culture of Chicken Primordial Germ Cells Isolated from Embryonic Blood and Incorporation into Germline of Recipient Embryo. J Poult Sci 2010. [DOI: 10.2141/jpsa.009058] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Nakamura Y, Yamamoto Y, Usui F, Atsumi Y, Ito Y, Ono T, Takeda K, Nirasawa K, Kagami H, Tagami T. Increased proportion of donor primordial germ cells in chimeric gonads by sterilisation of recipient embryos using busulfan sustained-release emulsion in chickens. Reprod Fertil Dev 2009; 20:900-7. [PMID: 19007554 DOI: 10.1071/rd08138] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2008] [Accepted: 07/27/2008] [Indexed: 11/23/2022] Open
Abstract
The aim of the present study was to improve the efficiency of endogenous primordial germ cell (PGC) depletion and to increase the ratio of donor PGCs in the gonads of recipient chicken embryos. A sustained-release emulsion was prepared by emulsifying equal amounts of Ca(2+)- and Mg(2+)-free phosphate-buffered saline containing 10% busulfan solubilised in N,N-dimethylformamide and sesame oil, using a filter. Then, 75 microg per 50 microL busulfan sustained-release emulsion was injected into the yolk. To determine the depletion and repopulation of PGCs in the gonads after 6 days incubation, whole-mount immunostaining was performed. The busulfan sustained-release emulsion significantly reduced the number of endogenous PGCs compared with control (P < 0.05). Moreover, the busulfan sustained-release emulsion significantly depleted endogenous PGCs compared with other previously reported busulfan delivery systems (P < 0.05), but with less variation, suggesting that the sustained-release emulsion delivered a consistent amount of busulfan to the developing chicken embryos. The PGC transfer study showed that the proportion of donor PGCs in the gonads of busulfan sustained-release emulsion-treated embryos after 6 days incubation increased 28-fold compared with control. In conclusion, the results demonstrate that exogenous PGCs are capable of migrating and settling in gonads from which endogenous PGCs have been removed using a busulfan sustained-release emulsion.
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Affiliation(s)
- Yoshiaki Nakamura
- Faculty of Agriculture, Shinshu University, Minamiminowa, Nagano, Japan
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31
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Effects of Busulfan Sustained-release Emulsion on Depletion and Repopulation of Primordial Germ Cells in Early Chicken Embryos. J Poult Sci 2009. [DOI: 10.2141/jpsa.46.127] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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32
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Analysis of Developmental Changes in Avian DNA Methylation Using a Novel Method for Quantifying Genome-wide DNA Methylation. J Poult Sci 2009. [DOI: 10.2141/jpsa.46.286] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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33
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Preferential Migration of Transferred Primordial Germ Cells to Left Germinal Ridge of Recipient Embryos in Chickens. J Poult Sci 2009. [DOI: 10.2141/jpsa.46.40] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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34
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Regeneration of Muscular Dystrophy Chickens by Transplantation of Early Blastodermal Cells into Recipient Embryos. J Poult Sci 2009. [DOI: 10.2141/jpsa.46.46] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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35
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Atalgin SH, Kürtül I. A morphological study of skeletal development in turkeys during the pre-hatching stage. Anat Histol Embryol 2008; 38:23-30. [PMID: 18786158 DOI: 10.1111/j.1439-0264.2008.00887.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Skeletal chondrofication, ossification and growth of turkey embryos were investigated and analysed to enable assessment of the developmental status and evaluation of the experimental effects on skeletal development, skeletal mutations and development of cultured embryos. Ten embryos were prepared every 24 h from 8 to 28 days of incubation. The fixed embryos were cleared and stained in toto with Alcian blue & Alizarin red for cartilage and ossified components, respectively. Observation of the skeleton was performed under a stereoscopic microscopy, with special attention to the timing of chondrofication and ossification of the bones. The first occurrence of the primary ossification centres was observed in the femur, tibiotarsus, and the dentary and supra-angular of the mandible on the 12th day, followed immediately by the other long bones. Skeletal features of the skull were determined to show the latest appearance of cartilage and ossification. Hence, all elements of the hyolingual apparatus remained cartilaginous until hatching took place except for the ceratobranchial. Even though the vertebral column chondrified earlier as compared with the ribs and sternum, they ossified later. While chondrofication was present in all the regions of the vertebral column at the same time, ossification progressed from the cervical through caudal regions. The growth rate of the femur was eminently higher than that of the humerus with increase in time, particularly after the 20th day of incubation. This seems to be obviously natural because the eggs used in the study are from the broiler turkey, which gains giant muscle mass at a very short period; precocity is probably at the expense of the bones of the leg rather than those of the wing.
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Affiliation(s)
- S H Atalgin
- Mudurnu Sureyya Astarci Vocational School of Higher Education, Abant Izzet Baysal University, Mudurnu, Bolu, Turkey
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36
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Gerhart J, Neely C, Pfautz J, George-Weinstein M. Tracking and ablating subpopulations of epiblast cells in the chick embryo. Biol Proced Online 2008; 10:74-82. [PMID: 19461955 PMCID: PMC2683548 DOI: 10.1251/bpo145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Revised: 06/04/2008] [Accepted: 06/11/2008] [Indexed: 12/22/2022] Open
Abstract
The early chick embryo contains subpopulations of cells that express lineage-specific transcription factors. We have developed protocols to examine the role of these cells during development that involve labeling them for cell tracking purposes and ablating them within the epiblast. The procedures take advantage of the fact that subpopulations of epiblast cells differentially express cell surface antigens recognized by monoclonal antibodies. Embryos are removed from the shell and incubated on the yolk with an antibody. Cells that bind the antibody are either tagged with a fluorescent secondary antibody or lysed with complement. For long-term analyses, embryos are returned to a host shell and placed in an incubator. This method of whole embryo manipulation ex-ovo and incubation in-ovo supports normal development into the fetal period.
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Affiliation(s)
- Jacquelyn Gerhart
- Lankenau Institute for Medical Research, 100 Lancaster Avenue, Wynnewood, PA 19096, USA.
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37
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Minematsu T, Harumi T, Naito M. Germ cell-specific expression of GFP gene induced by chickenvasahomologue (Cvh) promoter in early chicken embryos. Mol Reprod Dev 2008; 75:1515-22. [DOI: 10.1002/mrd.20894] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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38
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Restriction of Germline Proliferation by Soft X-ray Irradiation of Chicken Embryos and its Application to Chimera Production. J Poult Sci 2008. [DOI: 10.2141/jpsa.45.292] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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39
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Naito M, Minematsu T, Harumi T, Kuwana T. Testicular and ovarian gonocytes from 20-day incubated chicken embryos contribute to germline lineage after transfer into bloodstream of recipient embryos. Reproduction 2007; 134:577-84. [PMID: 17890293 DOI: 10.1530/rep-07-0134] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The present study was conducted to elucidate whether testicular and ovarian gonocytes obtained from 20-day incubated chicken embryos (stage 45) have the ability to migrate to the germinal ridges and contribute to germline lineage after transfer into the bloodstream of recipient embryos. Testicular and ovarian gonocytes were first identified as relatively large cells in a population of gonadal cells. The proportions of testicular and ovarian gonocytes in the total gonadal cells were 0.94 and 0.75% respectively, recognised as chicken vasa homologue-positive cells. Then, the dissociated gonadal cells obtained from 20-day incubated embryos containing testicular or ovarian gonocytes, with or without transfection, were transferred into recipient embryos. Expression of the introduced GFP gene was observed in the gonads of 6.5-day cultured recipient embryos (stage 30) in males and females, suggesting that the transferred testicular and ovarian gonocytes have the ability to migrate to the germinal ridges and enter the gonads. Furthermore, the presence of the donor-derived DNA was detected in the gonads of 20-day cultured recipient embryos in males and females, and also in the sperm samples obtained from the hatched male putative chimaeric chickens, suggesting that the transferred testicular and ovarian gonocytes were incorporated into the germline of chimaeric embryos and chickens. It is concluded that testicular and ovarian gonocytes obtained from 20-day incubated embryos have the ability to migrate to the germinal ridges after transfer into the bloodstream of recipient embryos, enter the gonads and contribute to the germline lineage of chimaeric embryos and chickens.
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Affiliation(s)
- Mitsuru Naito
- Transgenic Animal Research Center, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, Japan.
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40
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Naito M, Harumi T, Minematsu T, Tajima A, Kuwana T. Effect of soft X-ray irradiation on the migratory ability of primordial germ cells in chickens. Br Poult Sci 2007; 48:121-6. [PMID: 17453802 DOI: 10.1080/00071660701261294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
1. The present study was conducted to elucidate the effect of soft X-ray irradiation on the migratory ability of primordial germ cells (PGCs) to the germinal ridges of chicken embryos. 2. PGCs (Barred Plymouth Rock, BPR) were isolated from embryonic blood and irradiated with soft X-rays for 1-10 min. Then, the PGCs were transfected in vitro with GFP gene by lipofection. The manipulated PGCs were transferred to recipient embryos (White Leghorn, WL) and migration to the germinal ridges was analysed by examining GFP gene expression in the gonads of recipient embryos under UV light at x40 magnifications. The expression of GFP gene was detected in all the gonads of recipient embryos examined up to 10.5 d of culture. 3. Migration of PGCs irradiated with soft X-rays to the germinal ridges was also confirmed by detecting a single nucleotide polymorphism in the D-loop region of the mitochondrial DNA of BPR and WL chickens. Freshly collected PGCs (BPR) were transferred to the bloodstream of recipient embryos (WL). The fate of the transferred donor PGCs was traced by detecting the single nucleotide polymorphism in the D-loop region of the mitochondrial DNA in BPR and WL used in this study. Transferred donor PGC-derived cells were detected in all the gonads of 17-d cultured embryos by PCR. 4. The results suggest that PGCs irradiated with soft X-rays still retain the ability to migrate to the germinal ridges of recipient embryos.
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Affiliation(s)
- M Naito
- Transgenic Animal Research Center, National Institute of Agrobiological Sciences, Tsukuba, Japan.
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41
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Intense Expression of GFP Gene in Gonads of Chicken Embryos by Transfecting Circulating Primordial Germ Cells in vitro and in vivo. J Poult Sci 2007. [DOI: 10.2141/jpsa.44.416] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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42
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Dynamic Analysis of the Developmental Fate of Cells in the Center of the Area Pellucida of the Blastoderm in Chicken. J Poult Sci 2007. [DOI: 10.2141/jpsa.44.85] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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43
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Abstract
Presently, avian genetic resources are best maintained as living collections of birds. Unfortunately, these stocks have been under constant pressure to be destroyed because of the decline in the number of Poultry Science Departments and pressures to cut costs at land grant institutions. Cryopreservation of semen is often suggested as a means to bank avian germplasm. However, this is only applicable for single-gene traits and does not allow for full reconstitution of the genetics of the original line. Over the last 15 yr, advances in the manipulation of the early chick embryo, manipulation of primordial germ cells (PGC), and the culture of embryonic stem cells (ESC) suggests that cryopreservation of blastodermal cells, ESC, or PGC might offer a means to preserve the entire genome of highly selected, specialized stocks of poultry. Freezing each of these cell types is possible with varying degrees of efficiency. Similarly, the effectiveness of generating germ line chimeras using blastodermal cells, ESC, or PGC also varies greatly. Other factors that must be considered include the choice of the recipient lines to develop the germ line chimeras and the number of individuals needed to reconstitute the line. Finally, the low efficiency rate of reconstitution and the high cost associated with current technologies makes these approaches prohibitive. Significant challenges remain to be overcome before the entire genome of poultry stocks can be routinely cryoperserved and reconstituted.
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Affiliation(s)
- J N Petitte
- Department of Poultry Science, College of Agriculture and Life Sciences North Carolina State University, Raleigh 27603, USA.
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44
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Effects of Soft X-Ray Irradiation to Stage X Blastoderm on Restriction of Proliferation of Primordial Germ Cells in Early Chicken Embryos. J Poult Sci 2006. [DOI: 10.2141/jpsa.43.394] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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45
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Borwompinyo S, Brake J, Mozdziak PE, Petitte JN. Culture of chicken embryos in surrogate eggshells. Poult Sci 2005; 84:1477-82. [PMID: 16206571 DOI: 10.1093/ps/84.9.1477] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The chick embryo is a classical model to study embryonic development. However, most researchers have not studied the effect of embryonic manipulation on chick hatchability. The objective of this study was to determine the effect of egg orientation and type of sealing film on the hatchability of cultured embryos. Windows were made in the small end of recipient surrogate chicken eggshells, and donor embryos were placed into the recipient eggshell for the first 3 d of incubation. Survival over the first 3 d was maximized (P < 0.05) when windowed eggs sealed with Saran Wrap were positioned with the window-end down compared with window-end up. Three-day-old cultured embryos were transferred into recipient turkey eggshells, sealed with cling film, and cultured until hatch. Water weight loss of the surrogate eggshell cultures regardless of cling film type was not significantly different from control intact eggs. The embryos cultured in turkey eggshells and sealed with Handi Wrap exhibited higher hatchability (75% +/- 10.2%) than cultures sealed with Saran Wrap (45.2% +/- 13.8%). Hatchability of control intact eggs (86.4% +/- 5.3%) was not significantly (P > 0.05) different from the hatchability of eggs sealed with Handi Wrap, which suggested that Handi Wrap was an excellent sealant for chick embryos cultured after 3 d of incubation.
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Affiliation(s)
- S Borwompinyo
- Department of Poultry Science, North Carolina State University, Raleigh, North Carolina 27695, USA
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46
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Lim JM, Kwon HM, Kim DK, Kim JN, Park TS, Ono T, Han JY. Selective decrease of chick embryonic primordial germ cells in vivo and in vitro by soft X-ray irradiation. Anim Reprod Sci 2005; 95:67-74. [PMID: 16233964 DOI: 10.1016/j.anireprosci.2005.09.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2005] [Accepted: 09/14/2005] [Indexed: 10/25/2022]
Abstract
The feasibility of soft (low-energy) X-ray irradiation as a means of depleting the endogenous primordial germ cell(s) (PGC) of chicken embryos, to improve the efficiency of germ cell-mediated transgenesis, was investigated. Eggs were subjected to a non-irradiated control treatment and embryos were exposed for 40s to soft X-ray at 15, 16.5, or 18 kV ( approximately 1.5, 1.65, and 1.8 Gy, respectively). Exposure of stage X embryos to each dose of X-ray resulted in a reduction of approximately 50% in the number of PGC apparent at stage 28, whereas the total number of gonadal cells was unaffected. Irradiation (16.5 kV) of embryos at stage 9 or 14 also resulted in similar decreases in the number of PGC with no effect on the total number of gonadal cells. Irradiation did not affect embryo hatchability, compared with the non-irradiated control treatment, although the hatch rate increased with the age of embryos at the time of irradiation. Exposure of gonadal cells isolated from stage 28 embryos to X-ray (16.5 kV, approximately 0.8 Gy) prevented the increase in PGC number during subsequent culture for 10 days; the increase in the total number of gonadal cells was not affected. In conclusion, exposure of chicken embryos to a low dose of soft X-rays is effective for depleting the endogenous PGC population without affecting embryo hatchability or somatic cell viability.
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Affiliation(s)
- Jeong M Lim
- Department of Food and Animal Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea
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47
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Culture of Chicken Embryos Obtained from the Anterior Region of the Magnum of the Oviduct after Removing a Thin Layer of Dense Albumen Capsule from the Ovum. J Poult Sci 2005. [DOI: 10.2141/jpsa.42.140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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48
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Kawashima T, Kumata K, Tamaki Y, Kuwana T, Hashimoto K. An avian embryo culture system for embryogenesis using an artificial vessel: possible conservation benefits in the rescue and management of endangered avian species. Zoo Biol 2005. [DOI: 10.1002/zoo.20068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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49
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Ono T, Nakane Y, Wadayama T, Tsudzuki M, Arisawa K, Ninomiya S, Suzuki T, Mizutani M, Kagami H. Culture System for Embryos of Blue-Breasted Quail from the Blastoderm Stage to Hatching. Exp Anim 2005; 54:7-11. [PMID: 15725676 DOI: 10.1538/expanim.54.7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The blue-breasted quail (Coturnix chinensis), the smallest species in the order Galliforms, is a candidate model animal for avian developmental engineering because it is precocious and prolific. This species requires 17 days to hatch and 8 to 9 weeks to mature to an adult body weight of about 50 g, whereas the Japanese quail (Coturnix japonica) requires 16 days to hatch and 6 to 8 weeks to mature to an adult body weight of 100 to 150 g. The early embryo is the most challenging embryonic stage in terms of culture and manipulation for avian biotechnology. We have evaluated various conditions for the culture of blue-breasted quail embryos from the blastoderm stage to hatching. A hatchability rate of 26% (10/39) is among the best of the various culture conditions examined in the present study and the embryo culture system should facilitate advances in avian biotechnology.
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Affiliation(s)
- Tamao Ono
- Faculty of Agriculture, Shinshu University, Minamiminowa, Nagano, Japan
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50
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Xi Y, Nada Y, Soh T, Fujihara N, Hattori MA. Green fluorescent protein gene-transfected peafowl somatic cells participate in the development of chicken embryos. ACTA ACUST UNITED AC 2004; 301:139-49. [PMID: 14743513 DOI: 10.1002/jez.a.20021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This study was performed to investigate whether the embryonic somatic cells are capable of reconstituting and participating in the embryonic development of chickens to produce chimeras. In order to track the migration behavior of the donor cells, a cell line, originally isolated from an Indian peafowl embryo, was fluorescent-labeled by transfection of the cells with enhanced Green Fluorescent Protein (GFP) and Neomycin resistant (Neo) genes prior to injection into the stage X blastoderm of White Leghorn chickens. The injection was performed with a medium in the presence of 1-5% polyethylene glycol. The development of putative chimeric embryos between the stages three and 24 was examined for GFP expression under fluorescent light. To trace the peafowl cells in the developing chicken embryos, both a species-specific genetic marker originating from the mitochondrial DNA cytochrome b (cyt b) gene and a DNA fragment of GFP gene were used. Of the 185 fertile eggs manipulated, 173 developed into embryos. Fifty-five of them showed positive GFP patches in extra-embryonic tissues, and 15 expressed GFP in intra-embryonic tissues such as those of the head, heart, and gonad. PCR analysis revealed that PCR fragments for the peafowl mitochondrial DNA cyt b and GFP genes were detected in the samples of the GFP positive extra- and intra-embryonic tissues of the chimeras. The present results provide evidence that fluorescent-labeled peafowl embryonic cells carrying GFP and Neo genes are able to participate in the development of chicken embryos to generate chimeras.
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Affiliation(s)
- Yongmei Xi
- Laboratory of Reproductive Physiology and Biotechnology, Department of Animal and Marine Bioresource Sciences, Graduate School Kyushu University, Fukuoka 812-8581, Japan
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