Altered translation elongation contributes to key hallmarks of aging in the killifish brain

• 成果类型: Article
• 署名作者: Di Fraia, Domenico; Marino, Antonio; Lee, Jae Ho; Kelmer Sacramento, Erika; Baumgart, Mario; Bagnoli, Sara; Balla, Till; Schalk, Felix; Kamrad, Stephan; Guan, Rui; Caterino, Cinzia; Giannuzzi, Chiara; Tomaz da Silva, Pedro; Sahu, Amit Kumar; Gut, Hanna; Siano, Giacomo; Tiessen, Max; Terzibasi-Tozzini, Eva; Fornasiero, Eugenio F.; Gagneur, Julien; Englert, Christoph; Patil, Kiran R.; Correia-Melo, Clara; Nedialkova, Danny D.; Frydman, Judith; Cellerino, Alessandro; Ori, Alessandro
• 署名单位: Leibniz Association; Leibniz Institut fur Alternsforschung - Fritz-Lipmann-Institut (FLI); Stanford University; Scuola Normale Superiore di Pisa; Max Planck Society; University of Cambridge; Technical University of Munich; Stazione Zoologica Anton Dohrn; University of Gottingen; UNIVERSITY GOTTINGEN HOSPITAL; University of Trieste; Helmholtz Association; Helmholtz-Center Munich - German Research Center for Environmental Health; Technical University of Munich; Friedrich Schiller University of Jena; Technical University of Munich; Stanford University
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-10502
• DOI: 10.1126/science.adk3079
• 发表日期: 2025-07-31
• 关键词: complex-i; rna; protein; transcriptome; identification; activation; RESOLUTION; proteomics; STABILITY; modifier

摘要

Aging is a major risk factor for neurodegeneration and is characterized by diverse cellular and molecular hallmarks. To understand the origin of these hallmarks, we studied the effects of aging on the transcriptome, translatome, and proteome in the brain of short-lived killifish. We identified a cascade of events in which aberrant translation pausing led to altered abundance of proteins independently of transcriptional regulation. In particular, aging caused increased ribosome stalling and widespread depletion of proteins enriched in basic amino acids. These findings uncover a potential vulnerable point in the aging brain's biology-the biogenesis of basic DNA and RNA binding proteins. This vulnerability may represent a unifying principle that connects various aging hallmarks, encompassing genome integrity, proteostasis, and the biosynthesis of macromolecules.