Kwon Deborah Y, Zhou Zhaolan
Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
EMBO Mol Med. 2014 Aug;6(8):993-4. doi: 10.15252/emmm.201404324.
Despite genetic evidence implicating as the only overlapping gene between various 2q23.1 microdeletions, the function of MBD5 and its causality to 2q23.1 microdeletion syndrome, a disorder characterized by developmental delay and autistic features, has yet to be determined. In this issue of , Camarena generate an gene-trap mouse model and show for the first time that mice with reduced MBD5 expression develop behavioral abnormalities with neuronal function deficits, mimicking symptoms in 2q23.1 microdeletion syndrome, thus supporting a causal role for haploinsufficiency in the disorder.
尽管有遗传学证据表明MBD5是各种2q23.1微缺失之间唯一的重叠基因,但MBD5的功能及其与2q23.1微缺失综合征(一种以发育迟缓及自闭症特征为特点的疾病)的因果关系尚未确定。在本期《 》中,卡马雷纳等人构建了一个MBD5基因陷阱小鼠模型,并首次表明MBD5表达降低的小鼠会出现行为异常和神经元功能缺陷,类似于2q23.1微缺失综合征的症状,从而支持了MBD5单倍剂量不足在该疾病中的因果作用。