Molecular genetics of ameloblast cell lineage.

Molecular genetics of ameloblast cell lineage.
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成釉细胞谱系的分子遗传学。

DOI:
10.1002/jez.b.21261
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发表时间:
2009-07-15
影响因子:
2.2
通讯作者:
Bei, Marianna
Bei, Marianna
中科院分区:
生物学4区
文献类型:
--
作者:
Bei, Marianna

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晚期牙齿形态发生的特点是一系列的事件,决定冠形态和组织分化的上皮细胞成釉分泌成釉细胞和间充质细胞成牙本质分泌成牙本质细胞。功能性成釉细胞是一种高柱状极化细胞,能合成和分泌釉特异性蛋白。沉积全层釉基质后,成釉细胞尺寸缩小并调节釉成熟。釉质发育异常(AI)是一组异质性的遗传性釉质形成缺陷。在临床上,AI表现为一系列釉质畸形,根据釉质的厚度和硬度,其被分类为发育不全、钙化不足或发育不良类型。不同类型的AI是遗传的,无论是X连锁,常染色体显性或常染色体隐性性状。最近,几种基因突变已被确定为导致AI亚型。然而,这些基因如何协调它们的功能来控制釉质形成尚不清楚。在这篇综述中,我们讨论的作用,发挥决定性作用的基因决定成釉细胞的命运和生命周期,在转基因动物的研究基础上。
Late tooth morphogenesis is characterized by a series of events that determine crown morphogenesis and the histodifferentiation of epithelial cells into enamel-secreting ameloblasts and of mesenchymal cells into dentin-secreting odontoblasts. Functional ameloblasts are tall, columnar, polarized cells that synthesize and secrete a number of enamel-specific proteins. After depositing the full thickness of enamel matrix, ameloblasts shrink in size and regulate enamel maturation. Amelogenesis imperfecta (AI) is a heterogeneous group of inherited defects in enamel formation. Clinically, AI presents as a spectrum of enamel malformations that are categorized as hypoplastic, hypocalcified, or hypomaturation types, based upon the thickness and hardness of the enamel. The different types of AI are inherited, either as X-linked, autosomal dominant or autosomal recessive traits. Recently, several gene mutations have identified to cause the subtypes of AI. How these genes, however, coordinate their function to control amelogenesis is not understood. In this review, we discuss the role of genes that play definitive role on the determination of ameloblast cell fate and life cycle, based on studies in transgenic animals.
DOI: 10.1159/000091380
发表时间: 2005-01-01
影响因子: 2.7
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期刊: DIFFERENTIATION
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发表时间: 2004-12-01
影响因子: 7.6
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发表时间: 2002-12-01
期刊: DEVELOPMENT
影响因子: 4.6
作者:
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通讯作者: McMahon, AP