Abstract
Phosphatidylinositol 5-phosphate 4-kinases (PI5P4Ks), a family of three members in mammals (α, β and γ), have emerged as potential therapeutic targets due to their role in regulating many important cellular signaling pathways. In comparison to the PI5P4Kα and PI5P4Kβ, which usually have similar expression profiles across cancer cells, PI5P4Kγ exhibits distinct expression patterns, and pathological functions for PI5P4Kγ have been proposed in the context of cancer and neurodegenerative diseases. PI5P4Kγ has very low kinase activity and has been proposed to inhibit the PI4P5Ks through scaffolding function, providing a rationale for developing a selective PI5P4Kγ degrader. Here, we report the development and characterization of JWZ-1-80, a first-in-class PI5P4Kγ degrader. JWZ-1-80 potently degrades PI5P4Kγ via the ubiquitin-proteasome system and exhibits proteome-wide selectivity and is therefore a useful tool compound for further dissecting the biological functions of PI5P4Kγ.
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