期刊
EUROPEAN JOURNAL OF HUMAN GENETICS
卷 17, 期 11, 页码 1423-1431出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ejhg.2009.91
关键词
chromosome inversion; chromosome translocation; PROX1; hypoplastic left heart; position effect
资金
- Guy's and St Thomas' Charitable Foundation
- Wellcome Trust
- Health Foundation
- British Heart Foundation
- Little Heart Matters
- Muscular Dystrophy Campaign
Hypoplastic left heart (HLH) occurs in at least 1 in 10 000 live births but may be more common in utero. Its causes are poorly understood but a number of affected cases are associated with chromosomal abnormalities. We set out to localize the breakpoints in a patient with sporadic HLH and a de novo translocation. Initial studies showed that the apparently simple 1q41;3q27.1 translocation was actually combined with a 4-Mb inversion, also de novo, of material within 1q41. We therefore localized all four breakpoints and found that no known transcription units were disrupted. However we present a case, based on functional considerations, synteny and position of highly conserved non-coding sequence elements, and the heterozygous Prox1(+/-) mouse phenotype (ventricular hypoplasia), for the involvement of dysregulation of the PROX1 gene in the aetiology of HLH in this case. Accordingly, we show that the spatial expression pattern of PROX1 in the developing human heart is consistent with a role in cardiac development. We suggest that dysregulation of PROX1 gene expression due to separation from its conserved upstream elements is likely to have caused the heart defects observed in this patient, and that PROX1 should be considered as a potential candidate gene for other cases of HLH. The relevance of another breakpoint separating the cardiac gene ESRRG from a conserved downstream element is also discussed. European Journal of Human Genetics (2009) 17, 1423-1431; doi:10.1038/ejhg.2009.91; published online 27 May 2009
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据