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The methyl binding domain containing protein MBD5 is a transcriptional regulator responsible for 2q23.1 deletion syndrome.


ABSTRACT: 2Iq23.1 microdeletion syndrome is a recently described rare disease that includes intellectual disability, motor delay, autistic-like behaviors, and craniofacial abnormalities. Dosage insufficiency of the methyl-CpG-binding domain protein 5 (MBD5) gene was suggested as the genetic cause, since all the described patients carry a partial or total heterozygous deletion of MBD5. We reported the generation and characterization of a mouse model with haploinsufficiency for Mbd5 that confirmed this hypothesis. As in human 2q23.1 microdeletion syndrome, the MBD5 (+/GT) mouse model exhibited abnormal social behavior, cognitive impairment, and motor and craniofacial abnormalities, supporting a causal role for MBD5 in 2q23.1 microdeletion syndrome. The use of mouse neuronal cultures uncovered a deficiency in neurite outgrowth, suggesting the participation of MBD5 in neuronal processes. The study of the MBD5 (+/GT) mouse advanced our understanding of the abnormal brain development associated with behavioral and cognitive symptoms.

PROVIDER: S-EPMC4755234 | BioStudies | 2014-01-01

REPOSITORIES: biostudies

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