Repeat-element RNAs integrate a neuronal growth circuit

Eitan Erez Zahavi, Indrek Koppel, Riki Kawaguchi, Juan A. Oses-Prieto, Adam Briner, Aboozar Monavarfeshani, Irene Dalla Costa, Erna van Niekerk, Jinyoung Lee, Samaneh Matoo, Shane Hegarty, Ryan J. Donahue, Pabitra K. Sahoo, Shifra Ben-Dor, Ester Feldmesser, Julia Ryvkin, Dena Leshkowitz, Rotem Ben Tov Perry, Yuyan Cheng, Eli FarberOfri Abraham, Nitzan Samra, Nataliya Okladnikov, Stefanie Alber, Christin A. Albus, Ida Rishal, Igor Ulitsky, Mark H. Tuszynski, Jeffery L. Twiss, Zhigang He, Alma L. Burlingame, Mike Fainzilber

Research output: Contribution to journalArticlepeer-review

Abstract

Neuronal growth and regeneration are regulated by local translation of mRNAs in axons. We examined RNA polyadenylation changes upon sensory neuron injury and found upregulation of a subset of polyadenylated B2-SINE repeat elements, hereby termed GI-SINEs (growth-inducing B2-SINEs). GI-SINEs are induced from ATF3 and other AP-1 promoter-associated extragenic loci in injured sensory neurons but are not upregulated in lesioned retinal ganglion neurons. Exogenous GI-SINE expression elicited axonal growth in injured sensory, retinal, and corticospinal tract neurons. GI-SINEs interact with ribosomal proteins and nucleolin, an axon-growth-regulating RNA-binding protein, to regulate translation in neuronal cytoplasm. Finally, antisense oligos against GI-SINEs perturb sensory neuron outgrowth and nucleolin-ribosome interactions. Thus, a specific subfamily of transposable elements is integral to a physiological circuit linking AP-1 transcription with localized RNA translation.

Original languageEnglish
JournalCell
Early online date16 May 2025
DOIs
StatePublished Online - 16 May 2025

Keywords

  • RNA localization
  • Short Interspersed Nuclear Elements
  • axon growth
  • axonal transport
  • local translation
  • nerve injury
  • neuronal length sensing
  • non-coding RNA

All Science Journal Classification (ASJC) codes

  • General Biochemistry,Genetics and Molecular Biology

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