2026-07-23 理化学研究所,新潟大学
脳が活発に働くときにつくられるタンパク質を調べる本研究の概要
＜関連情報＞
- https://www.riken.jp/press/2026/20260723_1/index.html
- https://www.nature.com/articles/s41467-026-74968-z
活動依存的なリボソームプロファイリングにより、脳組織における標準的および非標準的翻訳の全体像が明らかになる Activity-dependent ribosome profiling reveals the landscape of canonical and non-canonical translation in brain tissue
Nayan Suryawanshi,Hitoshi Uchida,Ryo Endo,Kai Sato,Daisuke Satoh,Kazuya Tsumagari,Koshi Imami,Takayasu Mikuni & Motomasa Tanaka
Nature Communications Published:23 July 2026
DOI:https://doi.org/10.1038/s41467-026-74968-z
Abstract
Neural activity-dependent translation is essential for synaptic plasticity and diverse brain functions. Translation involves not only canonical main open reading frames (mORFs) but also upstream ORFs (uORFs), which may regulate mORF expression. However, due to technical limitations, systematic investigation of activity-dependent uORFs and mORFs in brain tissues remains challenging. Here, we developed a ribosome tagging and purification strategy that bypasses the prolonged turnover of ribosomal proteins, enabling ribosome profiling with one-hour temporal resolution after neural stimulation. Applying this strategy to mouse hippocampal slices undergoing long-term potentiation, we identify hundreds of activity-induced mORFs and uORFs, including a previously unknown uORF from Egr1. We demonstrate that this Egr1-uORF translation is tightly regulated by neuronal activity, and its encoded peptide interacts with peroxisomal machinery, suggesting a potential link between synaptic stimulus and peroxisome biology. This study provides a useful technique and resources for deciphering molecular mechanisms underlying activity- and translation-dependent brain functions in health and disease.
