Lumican regulates collagen fibril assembly: skin fragility and corneal opacity in the absence of lumican.

Lumican regulates collagen fibril assembly: skin fragility and corneal opacity in the absence of lumican.
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DOI:
10.1083/jcb.141.5.1277
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发表时间:
1998-06-01
影响因子:
7.8
通讯作者:
Carroll, H
Carroll, H
中科院分区:
生物学1区
文献类型:
--
作者:
Chakravarti, S;Magnuson, T;Lass, JH;Jepsen, KJ;LaMantia, C;Carroll, H

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Lumican是一种原型富含亮氨酸的蛋白聚糖,具有硫酸角质素侧链,是角膜、真皮和肌肉结缔组织的主要成分。Lumican无效突变纯合子小鼠显示皮肤松弛和脆弱,类似于某些类型的Ehlers-Danlos综合征。此外,突变小鼠出现双侧角膜混浊。纯合突变体中潜在的结缔组织缺陷是胶原纤维生长失调,如透射电子显微镜所示,皮肤和角膜中有显著比例的异常厚的胶原纤维。在这些突变小鼠中,正常角膜典型的高度组织化和规则间隔的胶原纤维基质也缺失。本研究确定了Lumican在调节胶原蛋白组装成各种结缔组织中的原纤维中的关键作用。最重要的是,这些结果提供了在高度组织化的胶原基质的形成中使用Lumican的必要性与角膜透明度之间的明确联系。
Lumican, a prototypic leucine-rich proteoglycan with keratan sulfate side chains, is a major component of the cornea, dermal, and muscle connective tissues. Mice homozygous for a null mutation in lumican display skin laxity and fragility resembling certain types of Ehlers-Danlos syndrome. In addition, the mutant mice develop bilateral corneal opacification. The underlying connective tissue defect in the homozygous mutants is deregulated growth of collagen fibrils with a significant proportion of abnormally thick collagen fibrils in the skin and cornea as indicated by transmission electron microscopy. A highly organized and regularly spaced collagen fibril matrix typical of the normal cornea is also missing in these mutant mice. This study establishes a crucial role for lumican in the regulation of collagen assembly into fibrils in various connective tissues. Most importantly, these results provide a definitive link between a necessity for lumican in the development of a highly organized collagenous matrix and corneal transparency.
DOI: 10.1007/bf00272296
发表时间: 1978-01-01
期刊: HUMAN GENETICS
影响因子: 5.3
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DOI: 10.1038/ng0397-247
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影响因子: 30.8
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缺乏血小板反应蛋白 2 的小鼠表现出结缔组织异常,这与胶原纤维生成紊乱、血管密度增加和出血素质有关。
DOI: 10.1083/jcb.140.2.419
发表时间: 1998-01-26
影响因子: 7.8
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Kyriakides, T R;Zhu, Y H;Smith, L T;Bain, S D;Yang, Z;Lin, M T;Danielson, K G;Iozzo, R V;LaMarca, M;McKinney, C E;Ginns, E I;Bornstein, P
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