Neuronal cell type specific roles for Nprl2 in neurodevelopmental disorder-relevant behaviors.

Loss of function in the subunits of the GTPase-activating protein (GAP) activity toward Rags-1 (GATOR1) complex, an amino-acid sensitive negative regulator of the mechanistic target of rapamycin complex 1 (mTORC1), is implicated in both genetic familial epilepsies and Neurodevelopmental Disorders (NDDs) (Baldassari et al., 2018). Previous studies have found seizure phenotypes and increased activity resulting from conditional deletion of GATOR1 function from forebrain excitatory neurons (Yuskaitis et al.

Increased glycine contributes to synaptic dysfunction and early mortality in Nprl2 seizure model.

Targeted therapies for epilepsies associated with the mTORC1 signaling negative regulator GATOR1 are lacking. NPRL2 is a subunit of the GATOR1 complex and mutations in GATOR1 subunits, including , are associated with epilepsy. To delineate the mechanisms underlying NPRL2-related epilepsies, we created a mouse () model with neocortical loss of .