ArticleCell reports2025
ER stress tolerance is regulated by copper-dependent PERK kinase activity.
Article in Cell reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed.
- Balancing cellular copper levels via the post-translational regulation of copper transport.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026Review
- Organelle homeostasis disruption: A driving force in the progression of cardiomyopathy (Review).Experimental and therapeutic medicine · 2026Review
- Cuproptosis: Biomarkers, Mechanisms and Treatments in Diseases.Molecules (Basel, Switzerland) · 2026Review
- Distinct signaling mechanisms and proteome phenotypes are elicited by compartment-specific genetic defects of copper homeostasis.bioRxiv : the preprint server for biology · 2026Article
- Copper homeostasis and organelle-dependent mechanisms in bone metabolism: implications for osteoporosis therapy.Frontiers in cell and developmental biology · 2026Review
- Cucurbitacin D Induces Apoptotic Cell Death via NOX4 and Overcomes Radioresistance in Colorectal Cancer.International journal of molecular sciences · 2025Article
Corrections and comments
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Authors and funding
10 authors.
Funding
Abstract
Pancreatic/PKR-like endoplasmic reticulum (ER) kinase (PERK) is a kinase that, in response to ER stress, mediates dual homeostatic and pro-apoptotic signaling. Thus, intricate regulation is required for physiological function. Attempts to modulate PERK activity have shown that the determinants of adaptive vs. maladaptive signaling remain ambiguous. Here, with purified protein, we provide evidence that PERK binds copper, identifies residues required for interaction, and demonstrates that copper is necessary for kinase activity. Furthermore, cellular PERK activity can be modulated via copper availability, and this regulatory relationship can be manipulated to dictate ER stress tolerance. Critically, these phenomena translate to phenotypes in vivo, as C. elegans harboring a "PERK-copper mutant" exhibit exacerbated ER-stress sensitivity. The copper-PERK paradigm suggests that copper homeostasis, as a regulator of PERK, may constitute a critical factor in resolving the long-standing ambiguity in endeavors to therapeutically target PERK.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.