A novel 13 base pair insertion in the sonic hedgehog ZRS limb enhancer (ZRS/LMBR1) causes preaxial polydactyly with triphalangeal thumb.
A novel 13 base pair insertion in the sonic hedgehog ZRS limb enhancer (ZRS/LMBR1) causes preaxial polydactyly with triphalangeal thumb.
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DOI:
10.1002/humu.22097
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发表时间:
2012-07
期刊:
影响因子:
3.9
通讯作者:
Nordgren, Ann
中科院分区:
文献类型:
--
作者:
Laurell, Tobias;VanderMeer, Julia E.;Wenger, Aaron M.;Grigelioniene, Giedre;Nordenskjold, Agneta;Arner, Marianne;Ekblom, Anna Gerber;Bejerano, Gill;Ahituv, Nadav;Nordgren, Ann
Mutations in the Sonic Hedgehog limb enhancer, the zone of polarizing activity regulatory sequence (LMBR1, commonly called the ZRS), cause limb malformations. In humans, three classes of mutations have been proposed based on the limb phenotype; single base changes throughout the region cause preaxial polydactyly, single base changes at one specific site cause Werner mesomelic syndrome and large duplications cause polysyndactyly. This study presents a novel mutation– a small insertion. In a Swedish family with autosomal dominant preaxial polydactyly, we found a 13 base pair insertion within the ZRS, ZRS603ins13 (NG-009240.1:g.106934_106935ins13). Computational transcription factor binding site predictions suggest that this insertion creates new binding sites and a mouse enhancer assay shows that this insertion causes ectopic gene expression. This study is the first to discover a small insertion in an enhancer that causes a human limb malformation and suggests a potential mechanism that could explain the ectopic expression caused by this mutation.
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影响因子:
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通讯作者:
Bezieau, S.
影响因子:
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Ahituv, Nadav
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Dobbs, Matthew B.
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de Graaff, E
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通讯作者:
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