論文

査読有り 筆頭著者 国際誌
2021年3月11日

OGG1 protects mouse spermatogonial stem cells from reactive oxygen species in culture†.

Biology of reproduction
  • Yoshifumi Mori
  • ,
  • Narumi Ogonuki
  • ,
  • Ayumi Hasegawa
  • ,
  • Mito Kanatsu-Shinohara
  • ,
  • Atsuo Ogura
  • ,
  • Yufeng Wang
  • ,
  • John R McCarrey
  • ,
  • Takashi Shinohara

104
3
開始ページ
706
終了ページ
716
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/biolre/ioaa216

Although reactive oxygen species (ROS) are required for spermatogonial stem cell (SSC) self-renewal, they induce DNA damage and are harmful to SSCs. However, little is known about how SSCs protect their genome during self-renewal. Here, we report that Ogg1 is essential for SSC protection against ROS. While cultured SSCs exhibited homologous recombination-based DNA double-strand break repair at levels comparable with those in pluripotent stem cells, they were significantly more resistant to hydrogen peroxide than pluripotent stem cells or mouse embryonic fibroblasts, suggesting that they exhibit high levels of base excision repair (BER) activity. Consistent with this observation, cultured SSCs showed significantly lower levels of point mutations than somatic cells, and showed strong expression of BER-related genes. Functional screening revealed that Ogg1 depletion significantly impairs survival of cultured SSCs upon hydrogen peroxide exposure. Thus, our results suggest increased expression of BER-related genes, including Ogg1, protects SSCs from ROS-induced damage.

リンク情報
DOI
https://doi.org/10.1093/biolre/ioaa216
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/33252132
ID情報
  • DOI : 10.1093/biolre/ioaa216
  • PubMed ID : 33252132

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