Genetic analysis of a severe case of Dowling-Meara epidermolysis bullosa simplex.

Genetic analysis of a severe case of Dowling-Meara epidermolysis bullosa simplex.
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一例严重的Dowling-Meara单纯性大疱性表皮松解症的遗传分析。

DOI:
10.1111/1523-1747.ep12342985
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发表时间:
1996
期刊:
The Journal of investigative dermatology
影响因子:
--
通讯作者:
Fuchs,E
Fuchs,E
中科院分区:
--
文献类型:
--
作者:
Chan,YM;Cheng,J;Gedde-DahlJr,T;Niemi,KM;Fuchs,E

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表皮具有重要的保护功能,它通过产生广泛的细胞骨架结构来表现,其独特特征是角蛋白丝。通过从单纯性大疱性表皮病(EBS)开始,现在扩展到一组常染色体显性人类水疱性皮肤病的研究,发现角蛋白基因的缺陷会导致细胞在机械创伤后脆性和变性。在大多数EBS病例中,点突变发生在表皮基底层中表达的角蛋白5(KS)和K14基因中。突变的精确位置和它在细丝组装中引起扰动的程度与疾病的严重程度相关。在本研究中,我们研究了一个案例的EBS,这在临床上是在道林-米拉EBS的频谱的严重端,并显示角蛋白丝凝集在基底上以及基底细胞。我们发现两个K14等位基因中的一个具有单点取代,导致Y129 D突变。该突变位于R125 C/H热点内部的4个残基,已知该热点是大多数Dowling-Meara病例的原因。我们提供了功能和结构的证据,以表明为什么YI 29 D突变可能是他能够创造这样一个严重的形式的EBS。
The epidermis serves an important protective function, which it manifests by producing an extensive cytoskeletal architecture, the unique feature of which are keratin filaments. Through studies that began with epidermolysis bullosa simplex (EBS) and now extend to a group of autosomal dominant human blistering skin disorders, it was discovered that defects in the keratin genes lead to cell fragility and degeneration upon mechanical trauma. In most cases of EBS, point mutations occur in the keratin 5 (KS) and K14 genes expressed in the basal layer of the epidermis. The precise location of the mutation and the degree to which it causes perturbations in filament assembly correlate with disease severity. In the present study, we examine a case of EBS, which clinically lies at the severe end of the spectrum of Dowling-Meara EBS and which shows keratin filament clumping in suprabasal as well as basal cells. We show that one of the two K14 alleles has a single point substitution, giving rise to a Y129D mutation. This mutation resides 4 residues internal to the R125C/H hotspot known to account for the majority of Dowling-Meara cases. We provide functional and structural evidence to suggest why the YI29D mutation may he capable of creating such a severe form of EBS.
不同形式的大疱性表皮松解症中三种基底膜成分的免疫组织学定位
DOI: 10.1111/j.1600-0560.1982.tb01068.x
发表时间: 1982
影响因子: 1.7
作者:
M. Kero;L. Peltonen;J. Foidart;E. Savolainen
通讯作者: E. Savolainen
单纯性大疱性表皮松解症(Dowling-Meara 型)是一种遗传性疾病,其特征是涉及角蛋白 K5 和 K14 的角蛋白丝网络异常。
DOI: --
发表时间: 1991
影响因子: 6.5
作者:
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DOI: 10.1073/pnas.90.15.7414
发表时间: 1993-08-01
影响因子: 11.1
作者:
CHAN, YM;YU, QC;FUCHS, E
通讯作者: FUCHS, E
单纯性大疱性表皮松解症(表皮内大疱性表皮松解症)及相关病症
DOI: 10.1007/978-1-4899-7190-6_14
发表时间: 1990
影响因子: 3.5
作者:
T. Gedde
通讯作者: T. Gedde
DOI: 10.1111/j.1365-2133.1992.tb11813.x
发表时间: 1992-05-01
影响因子: 10.3
作者:
MCGRATH, JA;ISHIDAYAMAMOTO, A;EADY, RAJ
通讯作者: EADY, RAJ