Hyper-polyploid embryos survive after implantation in mice

Hiroyuki Imai, Tokuko Iwamori, Ken Takeshi Kusakabe, Yasuo Kiso, Etsuro Ono, Kiyoshi Kano

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)


SummaryPolyploids generated by natural whole genome duplication have served as a dynamic force in vertebrate evolution. As evidence for evolution, polyploid organisms exist generally, however there have been no reports of polyploid organisms in mammals. In mice, polyploid embryos under normal culture conditions normally develop to the blastocyst stage. Nevertheless, most tetraploid embryos degenerate after implantation, indicating that whole genome duplication produces harmful effects on normal development in mice. Most previous research on polyploidy has mainly focused on tetraploid embryos. Analysis of various ploidy outcomes is important to comprehend the effects of polyploidization on embryo development. The purpose of this present study was to discover the extent of the polyploidization effect on implantation and development in post-implantation embryos. This paper describes for the first time an octaploid embryo implanted in mice despite hyper-polyploidization, and indicates that these mammalian embryos have the ability to implant, and even develop, despite the harmfulness of extreme whole genome duplication.

出版ステータス印刷中 - 2020

!!!All Science Journal Classification (ASJC) codes

  • 発生生物学
  • 細胞生物学


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