論文

査読有り 国際誌
2020年8月

The stress specific impact of ALKBH1 on tRNA cleavage and tiRNA generation.

RNA biology
  • Sherif Rashad
  • ,
  • Xiaobo Han
  • ,
  • Kanako Sato
  • ,
  • Eikan Mishima
  • ,
  • Takaaki Abe
  • ,
  • Teiji Tominaga
  • ,
  • Kuniyasu Niizuma

17
8
開始ページ
1092
終了ページ
1103
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1080/15476286.2020.1779492

tiRNAs are small non-coding RNAs produced when tRNA is cleaved under stress. tRNA methylation modifications has emerged in recent years as important regulators for tRNA structural stability and sensitivity to cleavage and tiRNA generation during stress, however, the specificity and higher regulation of such a process is not fully understood. Alkbh1 is a m1A demethylase that leads to destabilization of tRNA and enhanced tRNA cleavage. We examined the impact of Alkbh1 targeting via gene knockdown or overexpression on B35 rat neuroblastoma cell line fate following stresses and on tRNA cleavage. We show that Alkbh1 impact on cell fate and tRNA cleavage is a stress specific process that is impacted by the demethylating capacity of the cellular stress in question. We also show that not all tRNAs are cleaved equally following Alkbh1 manipulation and stress, and that Alkbh1 KD fails to rescue tRNAs from cleavage following demethylating stresses. These findings shed a light on the specificity and higher regulation of tRNA cleavage and should act as a guide for future work exploring the utility of Alkbh1 as a therapeutic target for cancers or ischaemic insult.

リンク情報
DOI
https://doi.org/10.1080/15476286.2020.1779492
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/32521209
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7549645
ID情報
  • DOI : 10.1080/15476286.2020.1779492
  • PubMed ID : 32521209
  • PubMed Central 記事ID : PMC7549645

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