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Lee Y, Trout A, Marti-Gutierrez N, Kang S, Xie P, Mikhalchenko A, Kim B, Choi J, So S, Han J, Xu J, Koski A, Ma H, Yoon JD, Van Dyken C, Darby H, Liang D, Li Y, Tippner-Hedges R, Xu F, Amato P, Palermo GD, Mitalipov S, Kang E. Haploidy in somatic cells is induced by mature oocytes in mice. Commun Biol 2022; 5:95. [PMID: 35079104 PMCID: PMC8789866 DOI: 10.1038/s42003-022-03040-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 01/05/2022] [Indexed: 02/01/2023] Open
Abstract
Haploidy is naturally observed in gametes; however, attempts of experimentally inducing haploidy in somatic cells have not been successful. Here, we demonstrate that the replacement of meiotic spindles in mature metaphases II (MII) arrested oocytes with nuclei of somatic cells in the G0/G1 stage of cell cycle results in the formation of de novo spindles consisting of somatic homologous chromosomes comprising of single chromatids. Fertilization of such oocytes with sperm triggers the extrusion of one set of homologous chromosomes into the pseudo-polar body (PPB), resulting in a zygote with haploid somatic and sperm pronuclei (PN). Upon culture, 18% of somatic-sperm zygotes reach the blastocyst stage, and 16% of them possess heterozygous diploid genomes consisting of somatic haploid and sperm homologs across all chromosomes. We also generate embryonic stem cells and live offspring from somatic-sperm embryos. Our finding may offer an alternative strategy for generating oocytes carrying somatic genomes.
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Affiliation(s)
- Yeonmi Lee
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi, 13488, South Korea
- Center for Embryo and Stem Cell Research, CHA Advanced Research Institute, CHA University, Seongnam, Gyeonggi, 13488, South Korea
| | - Aysha Trout
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Nuria Marti-Gutierrez
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Seoon Kang
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi, 13488, South Korea
- Department of Medical Science, Asan Medical Institute of Convergence Science and Technology (AMIST), University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, South Korea
| | - Philip Xie
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, 10021, USA
| | - Aleksei Mikhalchenko
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Bitnara Kim
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi, 13488, South Korea
| | - Jiwan Choi
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi, 13488, South Korea
- Department of Medical Science, Asan Medical Institute of Convergence Science and Technology (AMIST), University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, South Korea
| | - Seongjun So
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi, 13488, South Korea
- Department of Medical Science, Asan Medical Institute of Convergence Science and Technology (AMIST), University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, South Korea
| | - Jongsuk Han
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi, 13488, South Korea
| | - Jing Xu
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, Oregon Health and Science University, Portland, OR, 97006, USA
- Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Amy Koski
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Hong Ma
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Junchul David Yoon
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Crystal Van Dyken
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Hayley Darby
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Dan Liang
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Ying Li
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Rebecca Tippner-Hedges
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Fuhua Xu
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
- Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Paula Amato
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
- Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Gianpiero D Palermo
- The Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, 10021, USA.
| | - Shoukhrat Mitalipov
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA.
| | - Eunju Kang
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi, 13488, South Korea.
- Center for Embryo and Stem Cell Research, CHA Advanced Research Institute, CHA University, Seongnam, Gyeonggi, 13488, South Korea.
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Georgiou I, Pardalidis N, Giannakis D, Saito M, Watanabe T, Tsounapi P, Loutradis D, Kanakas N, Karagiannis A, Baltogiannis D, Giotitsas N, Miyagawa I, Sofikitis N. In vitro spermatogenesis as a method to bypass pre-meiotic or post-meiotic barriers blocking the spermatogenetic process: genetic and epigenetic implications in assisted reproductive technology. Andrologia 2007; 39:159-76. [PMID: 17714214 DOI: 10.1111/j.1439-0272.2007.00778.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Pregnancies achieved by assisted reproduction technologies and particularly by ooplasmic injections of either in vivo or in vitro generated immature male germ cells are susceptible to genetic risks inherent to the male population treated with assisted reproduction and additional risks inherent to these innovative procedures. The documented, as well as the theoretical risks, are discussed in this review. These risks represent mainly the consequences of genetic abnormalities underlying male infertility and may become stimulators for the development of novel approaches and applications in the treatment of infertility. Recent data suggest that techniques employed for in vitro spermatogenesis, male somatic cell haploidization, stem cell differentiation in vitro and assisted reproductive technology may also affect the epigenetic characteristics of the male gamete, the female gamete, or may have an impact on early embryogenesis. They may be also associated with an increased risk for genomic imprinting abnormalities. Production of haploid male gametes in vitro may not allow the male gamete to undergo all the genetic and epigenetic alterations that the male gamete normally undergoes during in vivo spermatogenesis.
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Affiliation(s)
- I Georgiou
- Laboratory of Molecular Urology and Genetics of Human Reproduction, Department of Urology, Ioannina University School of Medicine, Ioannina, Greece
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Abstract
Despite recent interest in the derivation of female and male gametes through somatic cell nuclear transfer, there is still insufficient data on chromosomal analysis of these gametes resulting from haploidization, especially involving a human nuclear donor and recipient oocytes. The objective of this study was to investigate the fidelity of chromosomal separation during haploidization of human cumulus cells by in-vitro matured human enucleated MII oocytes. A total of 129 oocytes were tested 4-7, 8-14, or 15-21 h after nuclear transfer (NT) followed by electro-stimulation, resulting in 71.3% activation efficiency on average. Haploidization was documented by the formation of two separate groups of chromosomes, originating from either polar body/pronucleus (PB/PN), or only 2PN, which were tested by 5-colour FISH, or DNA analysis for copy number of chromosomes 13, 16, 18, 21, 22 and X. Two PN were formed more frequently than PB/PN, irrespective of incubation time. In agreement with recent reports on mouse oocytes, as many as 90.2% of the resulting haploid sets tested showed abnormal chromosome segregation, suggesting unsuitability of the resulting artificial gametes for practical application at the present time.
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Affiliation(s)
- V Galat
- Reproductive Genetics Institute, 2825 North Halsted Street, Chicago, IL 60657, USA
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