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Komatsu M, Takuma H, Imai S, Yamane M, Takahashi M, Ikegawa T, Bai H, Ogawa H, Kawahara M. Dual barrier system against xenomitochondrial contamination in mouse embryos. Sci Rep 2023; 13:23058. [PMID: 38155240 PMCID: PMC10754889 DOI: 10.1038/s41598-023-50444-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 12/20/2023] [Indexed: 12/30/2023] Open
Abstract
Heteroplasmic mammalian embryos between genetically distant species fail to develop to term, preventing transmission of xenomitochondrial DNA to progeny. However, there is no direct evidence indicating the mechanisms by which species specificity of the mitochondrial genome is ensured during mammalian development. Here, we have uncovered a two-step strategy underlying the prevention of xenomitochondrial DNA transmission in mouse embryos harboring bovine mitochondria (mtB-M embryos). First, mtB-M embryos showed metabolic disorder by transient increase of reactive oxygen species at the 4-cell stage, resulting in repressed development. Second, trophoblasts of mtB-M embryos led to implantation failure. Therefore, we tested cell aggregation with tetraploid embryos to compensate for the placentation of mtB-M embryos. The 14 mtB-M embryos harboring bovine mtDNAs developed to term at embryonic day 19.5. Taken together, our results show that contamination of bovine mtDNA is prohibited by embryonic lethality due to metabolic disruption and failure of placentation, suggesting these represent xenomitochondrial elimination mechanisms in mammalian embryos.
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Affiliation(s)
- Masaya Komatsu
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan
- Hokkaido Agricultural Research Center, NARO, Sapporo, Hokkaido, 062-8555, Japan
| | - Hikaru Takuma
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan
| | - Shun Imai
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan
| | - Maiko Yamane
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan
| | - Masashi Takahashi
- Graduate School of Global Food Resources/Global Center for Food, Land and Water Resources, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan
| | - Takuto Ikegawa
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan
| | - Hanako Bai
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan
| | - Hidehiko Ogawa
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, 156-8502, Japan
| | - Manabu Kawahara
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, 060-8589, Japan.
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Kohri N, Akizawa H, Iisaka S, Bai H, Yanagawa Y, Takahashi M, Komatsu M, Kawai M, Nagano M, Kawahara M. Trophectoderm regeneration to support full-term development in the inner cell mass isolated from bovine blastocyst. J Biol Chem 2019; 294:19209-19223. [PMID: 31704705 DOI: 10.1074/jbc.ra119.010746] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/05/2019] [Indexed: 12/26/2022] Open
Abstract
Which comes first: tissue structure or cell differentiation? Although different cell types establish distinct structures delineating the inside and outside of an embryo, they progressively become specified by the blastocyst stage, when two types of cell lineages are formed: the inner cell mass (ICM) and the trophectoderm (TE). This inside-outside aspect can be experimentally converted by the isolation of the ICM from a blastocyst, leading to a posteriori externalization of the blastomeres composing the outermost layer of the ICM. Here, we investigated the totipotency of isolated mouse and bovine ICMs to determine whether they are competent for TE regeneration. Surprisingly, a calf was generated from the bovine isolated ICM with re-formed blastocoel (re-iICM), but no mouse re-iICMs developed to term. To further explore the cause of difference in developmental competency between the mouse and bovine re-iICMs, we investigated the SOX17 protein expression that is a representative molecular marker of primitive endoderm. The localization pattern of SOX17 was totally different between mouse and bovine embryos. Particularly, the ectopic SOX17 localization in the TE might be associated with lethality of mouse re-iICMs. Meanwhile, transcriptome sequencing revealed that some of the bovine re-iICMs showed transcriptional patterns of TE-specific genes similar to those of whole blastocysts. Our findings suggest that TE regeneration competency is maintained longer in bovine ICMs than in mouse ICMs and provide evidence that the ICM/TE cell fate decision is influenced by structural determinants, including positional information of each blastomere in mammalian embryos.
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Affiliation(s)
- Nanami Kohri
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Hiroki Akizawa
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Sakie Iisaka
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Hanako Bai
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Yojiro Yanagawa
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
| | - Masashi Takahashi
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Masaya Komatsu
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Masahito Kawai
- Shizunai Livestock Farm, Field Science Center for Northern Biosphere, Hokkaido University, Hokkaido 056-0141, Japan
| | - Masashi Nagano
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
| | - Manabu Kawahara
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
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Shiina K, Komatsu M, Yokoi F, Bai H, Takahashi M, Kawahara M. Overgrowth of mice generated from postovulatory-aged oocyte spindles. FASEB Bioadv 2019; 1:393-403. [PMID: 32123841 PMCID: PMC6996386 DOI: 10.1096/fba.2019-00005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 01/16/2019] [Accepted: 03/22/2019] [Indexed: 12/12/2022] Open
Abstract
Oocyte spindle transfer (OST) is a potent reproductive technology used for mammals that enables the spindle in a deteriorated oocyte at the metaphase of the second meiotic division (MII) to serve as the genetic material for producing descendants. However, whether postnatal growth is achieved via OST using developmentally deteriorated MII oocytes remains unclear. At 16 h after human chorionic gonadotropin administration, denuded MII oocytes immediately after retrieval from oviducts (0 h-oocytes) were used for in vitro fertilization (IVF) as controls. For IVF using postovulatory-aged oocytes, the 0 h-oocytes were further incubated for 12 h and 24 h (12 h- and 24 h-oocytes). These mouse oocytes served as a model for assessing the postnatal growth of individuals produced via OST from developmentally deteriorated oocytes. The embryos from 12 h- and 24 h-oocyte spindles exhibited high rates of development up to the neonatal stage as good as the non-manipulated controls. However, the mice derived from the 24 h-oocyte spindles displayed heavier body weights and greater feed consumption than both controls and mice derived from 12 h-oocyte spindles. Our results demonstrate the feasibility of OST as a potent reproductive technology and its limitation in the use of excessively aged postovulatory oocytes in mammalian reproduction.
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Affiliation(s)
- Kouki Shiina
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture Hokkaido University Sapporo Japan
| | - Masaya Komatsu
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture Hokkaido University Sapporo Japan
| | - Fumi Yokoi
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture Hokkaido University Sapporo Japan
| | - Hanako Bai
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture Hokkaido University Sapporo Japan
| | - Masashi Takahashi
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture Hokkaido University Sapporo Japan
| | - Manabu Kawahara
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture Hokkaido University Sapporo Japan
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