ArticleNature communications2025
4EHP and NELF-E regulate physiological ATF4 induction and proteostasis in disease models of Drosophila.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Article
- The Drosophila CEBPG homolog Irbp18 partners with crc (ATF4) to mediate the integrated stress response in degenerative disease models.Cell reports · 2026Article
- The regulation of Xrp1 expression by uORFs and main ORF sequences and its function in Drosophila disease models.PLoS genetics · 2026Article
- CHOP promotes the transition to chronic integrated stress response signaling with suppression of hepatocyte identity.bioRxiv : the preprint server for biology · 2026Article
- Effects of the combination of brefeldin A and tunicamycin on endoplasmic reticulum stress and apoptosis in human normal hepatocytes.Current research in toxicology · 2026Article
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6 authors.
Funding
Abstract
Cells adapt to proteostatic and metabolic stresses, in part, through stress activated eIF2α kinases that stimulate the translation of ATF4. Stress-induced ATF4 translation is regulated through elements at ATF4 mRNA's 5' leader. In addition to eIF2α kinases, ATF4 induction requires other regulators that remain poorly understood. Here, we report an ATF4 regulatory network consisting of eIF4E-Homologous Protein (4EHP), NELF-E, the 40S ribosome, and eIF3 subunits. Specifically, we found that the mRNA cap-binding protein, 4EHP, was required for ATF4 signaling in the Drosophila larval fat body and in disease models associated with abnormal ATF4 signaling. NELF-E mRNA, encoding a regulator of pol II-mediated transcription, was identified as a top interactor of 4EHP in a TRIBE (Targets of RNA Binding through Editing) screen. Quantitative proteomics analysis revealed that the knockdown of NELF-E or 4EHP commonly reduced several subunits of the 40S ribosome (RpS) and the eIF3 translation initiation factor. Moreover, reduction of NELF-E, 4EHP, RpS12, eIF3l, or eIF3h suppressed the expression of ATF4 and its target genes. These results uncover a previously unrecognized ATF4 regulatory network consisting of 4EHP and NELF-E that impacts proteostasis during normal development and in disease models.
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