Genetic Disruption of Anoctamin 5 in Mice Replicates Human Gnathodiaphyseal Dysplasia (GDD)

Genetic Disruption of Anoctamin 5 in Mice Replicates Human Gnathodiaphyseal Dysplasia (GDD)
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Anoctamin 5 的基因破坏小鼠复制了人类颌骨发育不良 (GDD)

DOI:
10.1007/s00223-019-00528-x
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发表时间:
2019-02
影响因子:
4.2
通讯作者:
胡颖
胡颖
中科院分区:
医学3区
文献类型:
--
作者:
王小予;董蕊;梁超;Ernst Reichenberger;胡颖

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颌干发育不良(GDD; OMIM#166260)是一种罕见的骨骼疾病,其主要特征是下颌骨的牙骨质-骨质病变、骨脆性、管状骨弯曲和骨干硬化。GDD是由Anoctamin-5(ANO 5)的点突变引起的;然而,疾病机制仍不清楚。在这里,我们使用CRISPR/Cas 9方法产生了Ano 5敲除(KO)小鼠,以研究GDD突变的功能丧失方面。纯合子Ano 5敲除小鼠(Ano 5-/-)复制了人类GDD的一些典型特征,包括巨大的颌骨、弯曲的胫骨、股骨和胫骨骨干的硬化和皮质增厚。血清碱性磷酸酶(ALP)水平升高Ano 5-/-小鼠GDD患者。颅盖衍生的Ano 5-/-成骨细胞培养物显示成骨细胞生成增加,这与我们先前的体外观察结果一致。骨基质是高矿化的,骨形成相关因子的表达在Ano 5-/-小鼠中增强,这表明成骨异常来自Ano 5的遗传破坏。我们相信这种新的小鼠模型将在细胞和分子水平上揭示GDD骨骼异常的发展。
Gnathodiaphyseal dysplasia (GDD; OMIM#166260) is a rare skeletal disorder which is mainly characterized by cemento-osseous lesions in mandibles, bone fragility, bowing and diaphyseal sclerosis of tubular bones. GDD is caused by point mutations in Anoctamin-5 (ANO5); however, the disease mechanisms remain unclear. Here we generated Ano5-knockout (KO) mice using a CRISPR/Cas 9 approach to study loss of function aspects of GDD mutations. Homozygous Ano5 knockout mice (Ano5-/-) replicate some typical traits of human GDD including massive jawbones, bowing tibia, sclerosis and cortical thickening of femoral and tibial diaphyses. Serum alkaline phosphatase (ALP) levels were elevated in Ano5-/-mice as in GDD patients. Calvaria-derived Ano5-/-osteoblast cultures show increased osteoblastogenesis, which is consistent with our previous in vitro observations. Bone matrix is hypermineralized, and the expression of bone formation-related factors is enhanced in Ano5-/-mice, suggesting that the osteogenic anomaly arises from a genetic disruption of Ano5. We believe this new mouse model will shed more light on the development of skeletal abnormalities in GDD on a cellular and molecular level.
DOI: 10.1007/978-3-662-48986-4_2322
发表时间: 2019
期刊: Springer Reference Medizin
影响因子: --
作者:
S. Holdenrieder
通讯作者: S. Holdenrieder
DOI: 10.1007/s00415-012-6502-x
发表时间: 2012-04
影响因子: 6
作者:
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通讯作者: I. Pénisson‐Besnier;J. Saint-André;D. Hicks;A. Sarkozy;A. Croué;J. Hudson;Hanns Lochmüller;F. Dubas
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发表时间: 2001-12-01
期刊: HUMAN GENETICS
影响因子: 5.3
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Campos-Xavier, AB;Saraiva, JM;Cormier-Daire, V
通讯作者: Cormier-Daire, V
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发表时间: 2001-07
期刊: The Journal of nutrition
影响因子: --
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发表时间: 2013-05
影响因子: 6
作者:
N. Witting;M. Duno;Helle Petri;T. Krag;H. Bundgaard;L. Køber;J. Vissing
通讯作者: N. Witting;M. Duno;Helle Petri;T. Krag;H. Bundgaard;L. Køber;J. Vissing