A ubiquitin-like protein encoded by the “noncoding” RNA TINCR promotes keratinocyte proliferation and wound healing

Akihiro Nita, Akinobu Matsumoto, Ronghao Tang, Chisa Shiraishi, Kazuya Ichihara, Daisuke Saito, Mikita Suyama, Tomoharu Yasuda, Gaku Tsuji, Masutaka Furue, Bumpei Katayama, Toshiyuki Ozawa, Teruasa Murata, Teruki Dainich, Kenji Kabashima, Atsushi Hatano, Masaki Matsumoto, Keiichi I. Nakayama

Research output: Contribution to journalArticlepeer-review

Abstract

Although long noncoding RNAs (lncRNAs) are transcripts that do not encode proteins by definition, some lncRNAs actually contain small open reading frames that are translated. TINCR (terminal differentiation-induced ncRNA) has been recognized as a lncRNA that contributes to keratinocyte differentiation. However, we here show that TINCR encodes a ubiquitin-like protein that is well conserved among species and whose expression was confirmed by the generation of mice harboring a FLAG epitope tag sequence in the endogenous open reading frame as well as by targeted proteomics. Forced expression of this protein promoted cell cycle progression in normal human epidermal keratinocytes, and mice lacking this protein manifested a delay in skin wound healing associated with attenuated cell cycle progression in keratinocytes. We termed this protein TINCR-encoded ubiquitin-like protein (TUBL), and our results reveal a role for TINCR in the regulation of keratinocyte proliferation and skin regeneration that is dependent on TUBL.

Original languageEnglish
Article numbere1009686
JournalPLoS genetics
Volume17
Issue number8
DOIs
Publication statusPublished - Aug 5 2021

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Molecular Biology
  • Genetics
  • Genetics(clinical)
  • Cancer Research

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