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Park JE, Kim MJ, Ha SK, Hong SG, Oh HJ, Kim GA, Park EJ, Kang JT, Saadeldin IM, Jang G, Lee BC. Correction: Altered Cell Cycle Gene Expression and Apoptosis in Post-Implantation Dog Parthenotes. PLoS One 2022; 17:e0277164. [PMID: 36318585 PMCID: PMC9624394 DOI: 10.1371/journal.pone.0277164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pone.0041256.].
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Optimal Treatment of 6-Dimethylaminopurine Enhances the In Vivo Development of Canine Embryos by Rapid Initiation of DNA Synthesis. Int J Mol Sci 2021; 22:ijms22147757. [PMID: 34299380 PMCID: PMC8303139 DOI: 10.3390/ijms22147757] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/16/2021] [Accepted: 07/17/2021] [Indexed: 02/06/2023] Open
Abstract
Artificial activation of oocytes is an important step for successful parthenogenesis and somatic cell nuclear transfer (SCNT). Here, we investigated the initiation of DNA synthesis and in vivo development of canine PA embryos and cloned embryos produced by treatment with 1.9 mM 6-dimethylaminopurine (6-DMAP) for different lengths of time. For experiments, oocytes for parthenogenesis and SCNT oocytes were cultured for 4 min in 10 μM calcium ionophore, and then divided into 2 groups: (1) culture for 2 h in 6-DMAP (DMAP-2h group); (2) culture for 4 h in DMAP (DMAP-4h group). DNA synthesis was clearly detected in all parthenogenetic (PA) embryos and cloned embryos incorporated BrdU 4 h after activation in DMAP-2h and DMAP-4h groups. In vivo development of canine parthenogenetic fetuses was observed after embryo transfer and the implantation rates of PA embryos in DMAP-2h were 34%, which was significantly higher than those in DMAP-4h (6.5%, p < 0.05). However, in SCNT, there was no significant difference in pregnancy rate (DMAP-2h: 41.6% vs. DMAP-4h: 33.3%) and implantation rates (DMAP-2h: 4.94% vs. DMAP-4h: 3.19%) between DMAP-2h and DMAP-4h. In conclusion, the use of DMAP-2h for canine oocyte activation may be ideal for the in vivo development of PA zygotes, but it was not more effective in in vivo development of canine reconstructed SCNT oocytes. The present study demonstrated that DMAP-2h treatment on activation of canine parthenogenesis and SCNT could effectively induce the onset of DNA synthesis during the first cell cycle.
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Hwang IS, Park MR, Lee HS, Kwak TU, Son HY, Kang JK, Lee JW, Lee K, Park EW, Hwang S. Developmental and Degenerative Characterization of Porcine Parthenogenetic Fetuses during Early Pregnancy. Animals (Basel) 2020; 10:ani10040622. [PMID: 32260352 PMCID: PMC7222715 DOI: 10.3390/ani10040622] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 11/16/2022] Open
Abstract
Simple Summary To increase the early implantation rate, oocytes and zygotes have been subjected to various artificial stimulations before and/or after in vitro fertilization, nuclear transfer, or sperm (spermatid) injection, etc. However, the stimulation process may induce parthenogenetic development. It is difficult to identify whether the embryo or fetus is normally fertilized or parthenogenetically activated in early pregnancy. In the present study, the porcine parthenotes originated from electric stimulation implanted and developed normally during the first month, in a manner similar to artificially inseminated embryos and fetuses. There were no statistical differences in the formation of the major organs such as the brain, liver, kidney, or heart in both groups. However, the implanted parthenotes radically ceased their development and degenerated after one month. It can be postulated that the parthenotes are one of the reasons for the gap between early pregnancy and delivery rate in assisted reproduction techniques. Abstract The difference between early pregnancy and delivery rate is quite large in assisted reproduction techniques (ARTs), including animal cloning. However, it is not clear why the implanted fetuses aborted after the early pregnancy stage. In the present study, we tried to evaluate the developmental and morphological characteristics of porcine parthenogenetically activated (PA) embryos or fetuses by electric stimulation during the early pregnancy period. The implanted PA and artificially inseminated (AI) embryos and fetuses were collected at day 26 and 35 after embryo transfer, respectively. The developmental and morphological parameters in the PA embryos at day 26 were similar to the AI embryos. The size, weight, formation of major organs, and apoptotic cells were not statistically different in both embryos at day 26. However, the PA fetuses at day 35 showed ceased fetal development and degenerated with abnormal morphologies in their organs. The day 35 PA fetuses showed significantly higher apoptotic cells and lower methylation status in three differentially methylated regions of the H19 gene compared to their comparators. Therefore, the normal development of PA embryos and fetuses during early gestation could lead to these pregnancies being misinterpreted as normal and become one of the main reasons for the gap between early pregnancy and delivery rate.
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Affiliation(s)
- In-Sul Hwang
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, Wanju, Jeonbuk 55365, Korea; (I.-S.H.); (M.-R.P.); (H.-S.L.); (T.-U.K.); (E.-W.P.)
| | - Mi-Ryung Park
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, Wanju, Jeonbuk 55365, Korea; (I.-S.H.); (M.-R.P.); (H.-S.L.); (T.-U.K.); (E.-W.P.)
| | - Hae-Sun Lee
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, Wanju, Jeonbuk 55365, Korea; (I.-S.H.); (M.-R.P.); (H.-S.L.); (T.-U.K.); (E.-W.P.)
| | - Tae-Uk Kwak
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, Wanju, Jeonbuk 55365, Korea; (I.-S.H.); (M.-R.P.); (H.-S.L.); (T.-U.K.); (E.-W.P.)
| | - Hwa-Young Son
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea;
| | - Jong-Koo Kang
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Korea;
| | - Jeong-Woong Lee
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea;
| | - Kichoon Lee
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA;
| | - Eung-Woo Park
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, Wanju, Jeonbuk 55365, Korea; (I.-S.H.); (M.-R.P.); (H.-S.L.); (T.-U.K.); (E.-W.P.)
| | - Seongsoo Hwang
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, Wanju, Jeonbuk 55365, Korea; (I.-S.H.); (M.-R.P.); (H.-S.L.); (T.-U.K.); (E.-W.P.)
- Correspondence: ; Tel.: +82-632-387-253
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Nair R, Mutalik S, Dasappa JP, Kalthur G, Adiga SK. Haploid parthenotes express differential response to in vitro exposure of ammonia compared to normally fertilized embryos. Biochem Biophys Res Commun 2017; 486:88-93. [PMID: 28267432 DOI: 10.1016/j.bbrc.2017.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 03/02/2017] [Indexed: 10/20/2022]
Abstract
In the present study, we assessed whether absence of paternal genome imparts any differential response in embryos to chemical stress such as ammonia. Parthenogenesis was induced in MII stage oocytes using 10 mM SrCl2 in M16 medium. Parthenotes and normally fertilized embryos at 2 cell stage were exposed to different concentrations of ammonia and cultured till blastocyst. Exposure of ammonia to normally fertilized embryos resulted in significant decrease in the developmental potential (p < 0.0001) and blastocyst quality (p < 0.001). Whereas, in parthenotes, even though lower concentrations of ammonia did not have any effect, at 200 μM concentration the blastocyst rate was two times higher than control. The baseline apoptotic index was higher in parthenotes compared to normally fertilized embryos, which further increased after ammonium exposure (p < 0.001). Unlike in normally fertilized embryos ammonia exposure altered the mitochondrial distribution pattern and lead to increased expression of Oct4, Nanog and Na+/K+ ion exchange channel, while the cytochrome C expression was downregulated. This indicates that haploidy and/or absence of paternal factors in the embryo results in differential tolerance to stress induced by ammonia.
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Affiliation(s)
- Ramya Nair
- Clinical Embryology, Kasturba Medical College, Manipal University, Manipal 576104, India
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal 576104, India
| | | | - Guruprasad Kalthur
- Clinical Embryology, Kasturba Medical College, Manipal University, Manipal 576104, India.
| | - Satish Kumar Adiga
- Clinical Embryology, Kasturba Medical College, Manipal University, Manipal 576104, India
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Kim GA, Oh HJ, Park JE, Kim MJ, Park EJ, Jo YK, Jang G, Kim MK, Kim HJ, Lee BC. Species-specific challenges in dog cloning. Reprod Domest Anim 2013; 47 Suppl 6:80-3. [PMID: 23279471 DOI: 10.1111/rda.12035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 07/06/2012] [Indexed: 11/28/2022]
Abstract
Somatic cell nuclear transfer (SCNT) is now an established procedure used in cloning of several species. SCNT in dogs involves multiple steps including the removal of the nuclear material, injection of a donor cell, fusion, activation of the reconstructed oocytes and finally transfer to a synchronized female recipient. There are therefore many factors that contribute to cloning efficiency. By performing a retrospective analysis of 2005-2012 published papers regarding dog cloning, we define the optimum procedure and summarize the specific feature for dog cloning.
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Affiliation(s)
- G A Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Korea
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