811-ATF4 Regulates DNA Repair in CUX2 Neuron Expansion

Paper Talk · Apr 18, 2026 · 18m

This paper explores how the protein ATF4 serves as a vital protector of genome stability during the development of the mammalian brain. The study identifies that CUX2+ neurons, which occupy the upper layers of the cerebral cortex, are uniquely dependent on this factor to manage the stress of rapid cell replication. By utilizing conditional-knockout mice, the authors demonstrate that a lack of ATF4 leads to catastrophic DNA damage and widespread cell death specifically within these upper-layer neurons. While deeper cortical layers remain relatively unaffected, the absence of this protein…