ArticleThe Journal of biological chemistry2025
Dysregulation of PI4P in the trans Golgi regions activates the mammalian Golgi stress response.
Article in The Journal of biological chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Spatial organization of phosphoinositide signaling.FEBS letters · 2026Review
- A coordinated transcriptional program controls de novo Golgi biogenesis.The EMBO journal · 2026Article
- Dynamic assessment of PI4P metabolism using split GFP based sensors.Scientific reports · 2025Article
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Authors and funding
14 authors.
Funding
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Abstract
The Golgi stress response is an important cytoprotective system that enhances Golgi function in response to cellular demand, while cells damaged by prolonged Golgi stress undergo cell death. OSW-1, a natural compound with anticancer activity, potently inhibits OSBP that transports cholesterol and phosphatidylinositol-4-phosphate (PI4P) at contact sites between the endoplasmic reticulum and the Golgi apparatus. Previously, we reported that OSW-1 induces the Golgi stress response, resulting in Golgi stress-induced transcription and cell death. However, the underlying molecular mechanism has been unknown. To reveal the mechanism of a novel pathway of the Golgi stress response regulating transcriptional induction and cell death (the PI4P pathway), we performed a genome-wide KO screen and found that transcriptional induction as well as cell death induced by OSW-1 was repressed by the loss of regulators of PI4P synthesis, such as PITPNB and PI4KB. Our data indicate that OSW-1 induces Golgi stress-dependent transcriptional induction and cell death through dysregulation of the PI4P metabolism in the Golgi.
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Registered trials
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