Monica Pomaville (@pomavillem.bsky.social)

mRNA export factors store nascent transcripts within nuclear speckles as an adaptive response to transient global inhibition of transcription Transcription inhibitors also disrupt nuclear export. Here, Williams et al. reveal that mRNA export factors sense transcription inhibition and adapt by storing mature export-competent mRNA in nuclear speckles. This enables rapid release when transcription resumes and ensures retention of cellular identity and viability during a transient global transcription insult. https://www.cell.com/molecular-cell/abstract/S1097-2765(24)01004-9