Increased RNA editing in maternal immune activation model of neurodevelopmental disease

Hadas Tsivion-Visbord, Eli Kopel, Ariel Feiglin, Tamar Sofer, Ran Barzilay, Tali Ben-Zur, Orly Yaron, Daniel Offen*, Erez Y. Levanon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The etiology of major neurodevelopmental disorders such as schizophrenia and autism is unclear, with evidence supporting a combination of genetic factors and environmental insults, including viral infection during pregnancy. Here we utilized a mouse model of maternal immune activation (MIA) with the viral mimic PolyI:C infection during early gestation. We investigated the transcriptional changes in the brains of mouse fetuses following MIA during the prenatal period, and evaluated the behavioral and biochemical changes in the adult brain. The results reveal an increase in RNA editing levels and dysregulation in brain development-related gene pathways in the fetal brains of MIA mice. These MIA-induced brain editing changes are not observed in adulthood, although MIA-induced behavioral deficits are observed. Taken together, our findings suggest that MIA induces transient dysregulation of RNA editing at a critical time in brain development.

Original languageEnglish
Article number5236
JournalNature Communications
Issue number1
StatePublished - 1 Dec 2020


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