ArticleNature communications2026
Glycine-modulating Slc6a20a-ASO restores NMDA receptor function in SHANK2 and SHANK3-mutant mice and cortical organoids.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Suppressed NMDA receptor (NMDAR) function contributes to multiple brain disorders, including schizophrenia, autism spectrum disorder (ASD), and NMDAR encephalitis. Previous attempts to restore NMDAR activity by increasing ambient glycine, a critical co-agonist, through GlyT1 inhibition have yielded mixed outcomes, partly due to GlyT1's extensive expression in essential brainstem regions. Slc6a20a, a glycine transporter widely expressed in cognition-relevant regions such as the cortex and hippocampus, offers a targeted alternative. Here we show that antisense oligonucleotide (ASO)-mediated Slc6a20a inhibition (Slc6a20a-ASO) normalizes ASD-related phenotypes in male Shank2- and Shank3-mutant mice, with model-dependent rescue profiles. Slc6a20a-ASO rescues NMDAR hypofunction and synaptic phospho-proteomic profiles in the prefrontal cortex. Furthermore, ASO targeting human SLC6A20 rescues suppressed NMDAR function in cortical organoids harboring SHANK2 or SHANK3 mutations. These findings underscore the potential and limitations of Slc6a20a/SLC6A20-ASO for treating disorders characterized by NMDAR hypofunction.
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