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- W4386498382 endingPage "3313.e6" @default.
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- W4386498382 abstract "Cells respond to intrinsic and extrinsic stresses by reducing global protein synthesis and activating gene programs necessary for survival. Here, we show that the integrated stress response (ISR) is driven by the non-canonical cap-binding protein eIF3d that acts as a critical effector to control core stress response orchestrators, the translation factor eIF2α and the transcription factor ATF4. We find that during persistent stress, eIF3d activates the translation of the kinase GCN2, inducing eIF2α phosphorylation and inhibiting general protein synthesis. In parallel, eIF3d upregulates the m6A demethylase ALKBH5 to drive 5′ UTR-specific demethylation of stress response genes, including ATF4. Ultimately, this cascade converges on ATF4 expression by increasing mRNA engagement of translation machinery and enhancing ribosome bypass of upstream open reading frames (uORFs). Our results reveal that eIF3d acts in a life-or-death decision point during chronic stress and uncover a synergistic signaling mechanism in which translational cascades complement transcriptional amplification to control essential cellular processes." @default.
- W4386498382 created "2023-09-07" @default.
- W4386498382 creator A5008142262 @default.
- W4386498382 creator A5040115761 @default.
- W4386498382 creator A5061038599 @default.
- W4386498382 date "2023-09-01" @default.
- W4386498382 modified "2023-10-17" @default.
- W4386498382 title "eIF3d controls the persistent integrated stress response" @default.
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