Germline Chd8 haploinsufficiency alters brain development in mouse
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- Univ. of California, Davis, CA (United States). Dept. of Psychiatry and Behavioral Sciences. Dept. of Neurobiology, Physiology and Behavior
- The Hospital for Sick Children, Toronto, ON (Canada). Mouse Imaging Centre
- Univ. of California, Davis, CA (United States). Dept. of Psychiatry and Behavioral Sciences. MIND Inst. School of Medicine
- Univ. of California, Davis, Sacramento, CA (United States). Dept. of Pathology and Laboratory Medicine. Shriners Hospitals for Children. Inst. for Pediatric Regenerative Medicine
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Functional Genomics Dept.
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Functional Genomics Dept.; USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States); Univ. of California, Merced, CA (United States). School of Natural Sciences
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Functional Genomics Dept.; USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
- The Hospital for Sick Children, Toronto, ON (Canada). Mouse Imaging Centre; Univ. of Toronto, ON (Canada). Dept. of Medical Biophysics
The chromatin remodeling gene CHD8 represents a central node in neurodevelopmental gene networks implicated in autism. In this paper, we examined the impact of germline heterozygous frameshift Chd8 mutation on neurodevelopment in mice. Chd8+/del5 mice displayed normal social interactions with no repetitive behaviors but exhibited cognitive impairment correlated with increased regional brain volume, validating that phenotypes of Chd8+/del5 mice overlap pathology reported in humans with CHD8 mutations. We applied network analysis to characterize neurodevelopmental gene expression, revealing widespread transcriptional changes in Chd8+/del5 mice across pathways disrupted in neurodevelopmental disorders, including neurogenesis, synaptic processes and neuroimmune signaling. We identified a co-expression module with peak expression in early brain development featuring dysregulation of RNA processing, chromatin remodeling and cell-cycle genes enriched for promoter binding by Chd8, and we validated increased neuronal proliferation and developmental splicing perturbation in Chd8+/del5 mice. Finally, this integrative analysis offers an initial picture of the consequences of Chd8 haploinsufficiency for brain development.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Canadian Inst. for Health Research (CIHR); National Council for Scientific and Technological Development (CNPq) (Brazil); National Inst. of Health (NIH) (United States); USDOE; Univ. of California, Davis (United States)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1436635
- Journal Information:
- Nature Neuroscience, Journal Name: Nature Neuroscience Journal Issue: 8 Vol. 20; ISSN 1097-6256
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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