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与COL11A1基因座剪接缺陷相关的马歇尔综合征。

Marshall syndrome associated with a splicing defect at the COL11A1 locus.

作者信息

Griffith A J, Sprunger L K, Sirko-Osadsa D A, Tiller G E, Meisler M H, Warman M L

机构信息

Department of Human Genetics, University of Michigan, Ann Arbor, MI, USA.

出版信息

Am J Hum Genet. 1998 Apr;62(4):816-23. doi: 10.1086/301789.

Abstract

Marshall syndrome is a rare, autosomal dominant skeletal dysplasia that is phenotypically similar to the more common disorder Stickler syndrome. For a large kindred with Marshall syndrome, we demonstrate a splice-donor-site mutation in the COL11A1 gene that cosegregates with the phenotype. The G+1-->A transition causes in-frame skipping of a 54-bp exon and deletes amino acids 726-743 from the major triple-helical domain of the alpha1(XI) collagen polypeptide. The data support the hypothesis that the alpha1(XI) collagen polypeptide has an important role in skeletal morphogenesis that extends beyond its contribution to structural integrity of the cartilage extracellular matrix. Our results also demonstrate allelism of Marshall syndrome with the subset of Stickler syndrome families associated with COL11A1 mutations.

摘要

马歇尔综合征是一种罕见的常染色体显性遗传性骨骼发育不良疾病,其表型与更为常见的斯-利二氏综合征相似。对于一个患有马歇尔综合征的大家族,我们在COL11A1基因中发现了一个剪接供体位点突变,该突变与表型共分离。G+1→A转换导致一个54bp外显子的框内跳跃,并从α1(XI)胶原多肽的主要三螺旋结构域中删除了氨基酸726 - 743。这些数据支持了这样一种假说,即α1(XI)胶原多肽在骨骼形态发生中具有重要作用,其作用超出了它对软骨细胞外基质结构完整性的贡献。我们的结果还证明了马歇尔综合征与与COL11A1突变相关的斯-利二氏综合征家族亚群的等位性。

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