ArticleFASEB journal : official publication of the Federation of American Societies for Experimental Biology2026
Maternal Choline Supplementation in a Mouse Model of Down Syndrome and Alzheimer's Disease Generates Unique Expression Profile Mosaics Within Three Hippocampal Excitatory Neuronal Populations.
Article in FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 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
Individuals with Down syndrome (DS) are at risk for early-onset Alzheimer's disease (AD), marked by neurodegeneration in hippocampal and basal forebrain circuits. Early-life interventions offer therapeutic potential, including maternal choline supplementation (MCS). MCS improves cognitive outcomes and neuroplasticity in rodent models of neurodevelopmental and neurodegenerative disorders, yet cell-type specific molecular effects remain unknown. We investigated the effect of MCS upon the onset of septohippocampal degeneration at 6 months of age in the Ts65Dn mouse model of DS/AD. Using laser capture microdissection and single population RNA-sequencing, transcriptomic changes were profiled within hippocampal CA1 and CA3 pyramidal neurons and dentate gyrus granule cells comparing trisomic and disomic offspring. Bioinformatic analysis revealed MCS-mediated downregulation of apoptotic pathways and upregulation of cognition-related functions across all populations, alongside cell-specific responses. These findings highlight MCS as a promising strategy for modulating disease-relevant pathways in a hippocampal cell-type-specific manner during early neurodegeneration in DS/AD.
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