Epigenetic changes, neuronal dysregulation and metabolomic abnormalities in Zmym2 mutant mice, a genetic model of schizophrenia and neurodevelopmental disorders
Huang, W.-C.; Mandell, K. P.; Aryal, S.; Song, B. J.; Valle-Tojeiro, A.; Goble, N.; Geng, C.; Asan, A. S.; Liu, X.-M.; Dennis, C.; Dailey, L.; Deik, A.; Inunciaga, L.; Mashin, E.; Farsi, Z.; Wang, Y.; Pan, J. Q.; Clish, C. B.; Keshishian, H.; Carr, S. A.; Sheng, M.
Show abstract
Loss-of-function mutations in ZMYM2 are associated with an increased risk of schizophrenia (SCZ) and neurodevelopmental disorders (NDD). ZMYM2 interacts with proteins involved in histone modification and gene regulation, including LSD1 and ADNP; however, its specific roles in the brain remain poorly understood. In this multi-omics study, we demonstrate that heterozygous knockout of Zmym2 in mice results in widespread disturbances in gene expression affecting diverse molecular pathways, including those related to histone modifications and neuronal activity. Proteomic analysis of synapses reveals dysregulation of lipid metabolism and neurofilament-associated pathways, while metabolomic profiling identifies alterations in sphingomyelin and ceramide levels. Furthermore, Zmym2 mutant mice exhibit abnormal brain oscillation patterns on EEG and locomotor hyperactivity in the open field test. Collectively, these findings underscore the critical role of ZMYM2 in brain development and function and highlight Zmym2 mutant mice as a genetic animal model for SCZ and NDD.
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