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Zhang X, Li T, Zhang L, Jiang L, Cui T, Yuan X, Wang C, Liu Z, Zhang Y, Li W, Zhou Q. Individual blastomeres of 4- and 8-cell embryos have ability to develop into a full organism in mouse. J Genet Genomics 2018; 45:677-680. [DOI: 10.1016/j.jgg.2018.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/02/2018] [Accepted: 07/29/2018] [Indexed: 10/28/2022]
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Zhang S, Luo K, Cheng D, Tan Y, Lu C, He H, Gu Y, Lu G, Gong F, Lin G. Number of biopsied trophectoderm cells is likely to affect the implantation potential of blastocysts with poor trophectoderm quality. Fertil Steril 2016; 105:1222-1227.e4. [PMID: 26820770 DOI: 10.1016/j.fertnstert.2016.01.011] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 01/08/2016] [Accepted: 01/08/2016] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To evaluate whether the developmental potential of the blastocyst is affected by the number of trophectoderm (TE) cells biopsied in preimplantation genetic diagnosis (PGD) cycles. DESIGN Retrospective study. SETTING University-affiliated center. PATIENT(S) Women underwent PGD cycles of blastocyst biopsy and fluorescence in situ hybridization analysis. INTERVENTION(S) Not applicable. MAIN OUTCOME MEASURE(S) Biopsied TE cell number of blastocysts, survival, and implantation rates. RESULT(S) The biopsied TE cell number was affected by the TE quality and experience of different embryologists. The diagnostic efficiency increased when from one to five cells were biopsied (86.7%, 91.7%%, 96.0%, 96.8%, to 98.7%) and was maximized when more than six cells were biopsied. To compare the clinical efficiencies, blastocysts were divided into four groups according to biopsied TE cell number: 1-5, 6-10, 11-15, and 16-41. For the blastocysts with grade A TE score, no significant difference was observed in the survival and implantation rates among the four groups. For the blastocysts with grades B and C TE scores, the survival rates showed no significant differences among the four groups, but a significant decreasing trend in implantation rates was observed with increasing biopsied TE cell number. CONCLUSION(S) The implantation potential is negatively affected by the biopsied TE cell number in blastocysts with poor TE morphological score.
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Affiliation(s)
- Shuoping Zhang
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China
| | - Keli Luo
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China; Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, People's Republic of China
| | - Dehua Cheng
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China
| | - Yueqiu Tan
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China; Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, People's Republic of China
| | - Changfu Lu
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China; Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, People's Republic of China
| | - Hui He
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, People's Republic of China
| | - Yifan Gu
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China; Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, People's Republic of China
| | - Guangxiu Lu
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China; Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, People's Republic of China; National Engineering and Research Center of Human Stem Cell, Changsha, People's Republic of China
| | - Fei Gong
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China; Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, People's Republic of China
| | - Ge Lin
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, People's Republic of China; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha, People's Republic of China; Key Laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha, People's Republic of China; National Engineering and Research Center of Human Stem Cell, Changsha, People's Republic of China.
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Mtango NR, Potireddy S, Latham KE. Oocyte quality and maternal control of development. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2008; 268:223-90. [PMID: 18703408 DOI: 10.1016/s1937-6448(08)00807-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The oocyte is a unique and highly specialized cell responsible for creating, activating, and controlling the embryonic genome, as well as supporting basic processes such as cellular homeostasis, metabolism, and cell cycle progression in the early embryo. During oogenesis, the oocyte accumulates a myriad of factors to execute these processes. Oogenesis is critically dependent upon correct oocyte-follicle cell interactions. Disruptions in oogenesis through environmental factors and changes in maternal health and physiology can compromise oocyte quality, leading to arrested development, reduced fertility, and epigenetic defects that affect long-term health of the offspring. Our expanding understanding of the molecular determinants of oocyte quality and how these determinants can be disrupted has revealed exciting new insights into the role of oocyte functions in development and evolution.
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Affiliation(s)
- Namdori R Mtango
- Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, PA 19140, USA
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Klimanskaya I, Chung Y, Becker S, Lu SJ, Lanza R. Derivation of human embryonic stem cells from single blastomeres. Nat Protoc 2007; 2:1963-72. [PMID: 17703208 DOI: 10.1038/nprot.2007.274] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This protocol details a method to derive human embryonic stem (hES) cells from single blastomeres. Blastomeres are removed from morula (eight-cell)-stage embryos and cultured until they form multicell aggregates. These blastomere-derived cell aggregates are plated into microdrops seeded with mitotically inactivated feeder cells, and then connected with neighboring microdrops seeded with green fluorescent protein-positive hES cells. The resulting blastomere-derived outgrowths are cultured in the same manner as blastocyst-derived hES cells. The whole process takes about 3-4 months.
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