Lee SY, Kweon H, Kang H, Kim E. Age-differential sexual dimorphisms in CHD8-S62X-mutant mouse synapses and transcriptomes.
Front Mol Neurosci 2023;
16:1111388. [PMID:
36873104 PMCID:
PMC9978779 DOI:
10.3389/fnmol.2023.1111388]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/18/2023] [Indexed: 02/18/2023] Open
Abstract
Chd8+/N2373K mice with a human C-terminal-truncating mutation (N2373K) display autistic-like behaviors in juvenile and adult males but not in females. In contrast, Chd8+/S62X mice with a human N-terminal-truncating mutation (S62X) display behavioral deficits in juvenile males (not females) and adult males and females, indicative of age-differential sexually dimorphic behaviors. Excitatory synaptic transmission is suppressed and enhanced in male and female Chd8+/S62X juveniles, respectively, but similarly enhanced in adult male and female mutants. ASD-like transcriptomic changes are stronger in newborn and juvenile (but not adult) Chd8+/S62X males but in newborn and adult (not juvenile) Chd8+/S62X females. These results point to age-differential sexual dimorphisms in Chd8+/S62X mice at synaptic and transcriptomic levels, in addition to the behavioral level.
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