astrocyte development
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Playing fast and loose with glutamate builds healthy circuits in the developing cortex
The construction of cortical circuits requires the precise formation of connections between excitatory and inhibitory neurons during early development. Multiple factors, including neurotransmitters, neuronal activity, and neuronal-glial interactions, shape how these critical circuits form. Disruptions of these early processes can disrupt circuit formation, leading to epilepsy and other neurodevelopmental disorders. Here, I will describe our work into understanding how prolonged post-natal astrocyte development in the cortex creates a permissive window for glutamate signaling that provides tonic activation of developing interneurons through Grin2D NMDA receptors. Experimental disruption of this pathway results in hyperexcitable cortical circuits and human mutations in the Grin2D gene, as well as other related molecules that regulate early life glutamate signaling, are associated with devastating epileptic encephalopathies. We will explore fundamental mechanisms linking early life glutamate signaling and later circuit hyperexcitability, with an emphasis on potential therapeutic interventions aimed at reducing epilepsy and other neurological dysfunction.
NEDDYLATION IS ESSENTIAL FOR ASTROCYTE DEVELOPMENT <EM>IN VITRO</EM> AND <EM>IN VIVO</EM>
FENS Forum 2026
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