Nucleosome destabilization by nuclear non-coding RNAs

Risa Fujita, Tatsuro Yamamoto, Yasuhiro Arimura, Saori Fujiwara, Hiroaki Tachiwana, Yuichi Ichikawa, Yuka Sakata, Liying Yang, Reo Maruyama, Michiaki Hamada, Mitsuyoshi Nakao, Noriko Saitoh, Hitoshi Kurumizaka

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In the nucleus, genomic DNA is wrapped around histone octamers to form nucleosomes. In principle, nucleosomes are substantial barriers to transcriptional activities. Nuclear non-coding RNAs (ncRNAs) are proposed to function in chromatin conformation modulation and transcriptional regulation. However, it remains unclear how ncRNAs affect the nucleosome structure. Eleanors are clusters of ncRNAs that accumulate around the estrogen receptor-α (ESR1) gene locus in long-term estrogen deprivation (LTED) breast cancer cells, and markedly enhance the transcription of the ESR1 gene. Here we detected nucleosome depletion around the transcription site of Eleanor2, the most highly expressed Eleanor in the LTED cells. We found that the purified Eleanor2 RNA fragment drastically destabilized the nucleosome in vitro. This activity was also exerted by other ncRNAs, but not by poly(U) RNA or DNA. The RNA-mediated nucleosome destabilization may be a common feature among natural nuclear RNAs, and may function in transcription regulation in chromatin.

本文言語English
論文番号60
ジャーナルCommunications Biology
3
1
DOI
出版ステータスPublished - 2020 12 1

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Medicine (miscellaneous)

フィンガープリント 「Nucleosome destabilization by nuclear non-coding RNAs」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル