期刊
CONGENITAL ANOMALIES
卷 50, 期 1, 页码 1-7出版社
WILEY
DOI: 10.1111/j.1741-4520.2009.00266.x
关键词
GCPS; Gli3; PAP-A; Pdn; PHS; Xt
类别
资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan [20591297]
GLI3 is the gene responsible for Greig cephalopolysyndactyly syndrome (GCPS), Pallister-Hall syndrome (PHS) and Postaxial polydactyly type-A (PAP-A). Genetic polydactyly mice such as Pdn/Pdn (Polydactyly Nagoya), XtH/XtH (Extra toes) and XtJ/XtJ (Extra toes Jackson) are the mouse homolog of GCPS, and Gli3tmlUrtt/Gli3tmlUrt is produced as the mouse homolog of PHS. In the present review, relationships between mutation points of GLI3 and Gli3, and resulting phenotypes in humans and mice are described. It has been confirmed that mutation in the upstream or within the zinc finger domain of the GLI3 gene induces GCPS; that in the post-zinc finger region including the protease cleavage site induces PHS; and that in the downstream of the GLI3 gene induces PAP-A. A mimicking phenomenon was observed in the mouse homolog. Therefore, human GLI3 and mouse Gli3 genes have a common structure, and it is suggested here that mutations in the same functional regions produce similar phenotypes in human and mice. The most important issue might be that GCPS and PHS exhibit an autosomal dominant trait, but mouse homologs, such as Pdn/Pdn, XtH/XtH, XtJ/XtJ and Gli3tmlUrt/Gli3tmlUrt, are autosomal recessive traits in the manifestation of similar phenotypes to human diseases. It is discussed here how the reduced amounts of the GLI3 protein, or truncated mutant GLI3 protein, disrupt development of the limbs, head and face.
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