Genetic and functional dissection of HTRA1 and LOC387715 in age-related macular degeneration.

Genetic and functional dissection of HTRA1 and LOC387715 in age-related macular degeneration.
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HTRA1 和 LOC387715 在年龄相关性黄斑变性中的遗传和功能解析

DOI:
10.1371/journal.pgen.1000836
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发表时间:
2010-02-05
期刊:
影响因子:
4.5
通讯作者:
Zhang K
Zhang K
中科院分区:
生物学2区
文献类型:
--
作者:
Yang Z;Tong Z;Chen Y;Zeng J;Lu F;Sun X;Zhao C;Wang K;Davey L;Chen H;London N;Muramatsu D;Salasar F;Carmona R;Kasuga D;Wang X;Bedell M;Dixie M;Zhao P;Yang R;Gibbs D;Liu X;Li Y;Li C;Li Y;Campochiaro B;Constantine R;Zack DJ;Campochiaro P;Fu Y;Li DY;Katsanis N;Zhang K

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10 q26上的一个常见单倍型影响年龄相关性黄斑变性(AMD)的风险,包括两个基因,LOC 387715和HTRA 1。最近的数据表明,LOC 387715的丢失,介导的插入/缺失(in/del),使其信息不稳定,与疾病的因果关系。在这里,我们发现LOC 387715的缺失不足以解释AMD的易感性,因为该基因中导致其信息丢失的无义突变(R38 X)存在于保护性单倍型中。同时,由in/del和rs 11200638标记的常见疾病单倍型对相邻基因HTRA 1的转录上调有影响。这些数据暗示了AMD发病机制中HTRA 1表达的增加,并强调了探索赋予复杂性状易感性的单倍型中等位基因的多功能后果的重要性。
A common haplotype on 10q26 influences the risk of age-related macular degeneration (AMD) and encompasses two genes, LOC387715 and HTRA1. Recent data have suggested that loss of LOC387715, mediated by an insertion/deletion (in/del) that destabilizes its message, is causally related with the disorder. Here we show that loss of LOC387715 is insufficient to explain AMD susceptibility, since a nonsense mutation (R38X) in this gene that leads to loss of its message resides in a protective haplotype. At the same time, the common disease haplotype tagged by the in/del and rs11200638 has an effect on the transcriptional upregulation of the adjacent gene, HTRA1. These data implicate increased HTRA1 expression in the pathogenesis of AMD and highlight the importance of exploring multiple functional consequences of alleles in haplotypes that confer susceptibility to complex traits.
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