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Mutations in a synaptic organizing pathway contribute to autism. Autism-associated mutations in MDGA2 (MAM domain containing glycosylphosphatidylinositol anchor 2) are thought to reduce excitatory/inhibitory transmission. However, we show that mutation of Mdga2 elevates excitatory transmission, and that MDGA2 blocks neuroligin-1 interaction with neurexins and suppresses excitatory synapse development...
The spatiotemporal activities of astrocyte Ca 2+ signaling in mature neuronal circuits remain unclear. We used genetically encoded Ca 2+ and glutamate indicators as well as pharmacogenetic and electrical control of neurotransmitter release to explore astrocyte activity in the hippocampal mossy fiber pathway. Our data revealed numerous localized, spontaneous Ca 2+ signals in...
Lowering mutant Huntingtin is a consensus therapeutic strategy for Huntington's disease. In this issue of Neuron, Kordasiewicz et al. (2012) show the benefit of transient antisense oligonucleotide (ASO) therapy to degrade Huntingtin mRNA and elicit sustained therapeutic benefit in HD mice.
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