Schizophrenia Risk Gene Linked to Hyper-Excitable Neurons

Researchers at King’s College London have uncovered how the schizophrenia-associated gene ZNF804A alters neuronal function during critical brain development. Using CRISPR-Cas9 gene editing, the team suppressed ZNF804A in developing cortical neurons, revealing its role in regulating protein production and synaptic signaling. The study identified that ZNF804A peaks in activity during the second trimester of neurodevelopment, specifically within glutamatergic neurons. When ZNF804A was disrupted, neurons exhibited accelerated local protein translation, with excess ribosomes accumulating at dendrite tips. This led to heightened synaptic protein density and increased electrical excitability, linking genetic risk to tangible neurobiological changes. Schizophrenia is highly heritable, with 287 genetic risk loci identified, yet the mechanisms connecting these variants to brain function remained unclear. This research bridges that gap by demonstrating how ZNF804A’s activity shapes neuronal structure and signaling, providing a potential target for future therapies. The findings were published in *Science Advances* by neuroscientists at the Institute of Psychiatry, Psychology & Neuroscience (IoPPN). Professor Deepak Srivastava, a joint senior author, emphasized the need for precision functional genomics to determine gene activity timing and cellular expression patterns in psychiatric disorders. This work offers a critical step toward understanding schizophrenia’s neurobiological roots and developing interventions. By isolating ZNF804A’s effects on glutamatergic neurons, the study highlights how genetic risk factors manifest in brain development, paving the way for targeted treatments.