Fiche publication
Date publication
mars 2025
Journal
Science advances
Auteurs
Membres identifiés du Cancéropôle Est :
Dr REINA-SAN-MARTIN Bernardo
,
Dr TORA Laszlo
,
Dr MOLINA Nacho
,
Dr MENDOZA Manuel
Tous les auteurs :
Forouzanfar F, Moreno DF, Plassard D, Furst A, Oliveira KA, Reina-San-Martin B, Tora L, Molina N, Mendoza M
Lien Pubmed
Résumé
Transcript buffering entails reciprocal modulation of mRNA synthesis and degradation to maintain stable RNA levels under varying cellular conditions. Current models depict a global connection between mRNA synthesis and degradation, but underlying mechanisms remain unclear. Here, we show that changes in RNA metabolism following depletion of TIP60/KAT5, the acetyltransferase subunit of the NuA4 transcriptional coactivator complex, reveal that transcript buffering occurs at a gene-specific level. By combining RNA sequencing of nuclear, cytoplasmic, and newly synthesized transcript fractions with biophysical modeling in mouse embryonic stem cells, we demonstrate that transcriptional changes caused by TIP60 depletion are offset by corresponding changes in RNA nuclear export and cytoplasmic stability, indicating gene-specific buffering. Disruption of the unrelated ATAC coactivator complex also causes gene-specific transcript buffering. We propose that cells dynamically adjust RNA splicing, export, and degradation in response to individual RNA synthesis alterations, thereby sustaining cellular homeostasis.
Mots clés
Animals, Mice, RNA, Messenger, genetics, Histone Acetyltransferases, metabolism, RNA Stability, RNA Splicing, Mouse Embryonic Stem Cells, metabolism, Humans, Transcription, Genetic, Cell Nucleus, metabolism, Cytoplasm, metabolism, Gene Expression Regulation
Référence
Sci Adv. 2025 03 21;11(12):eadr1492
