Monocilia in the embryonic mouse heart suggest a direct role for cilia in cardiac morphogenesis.

Monocilia in the embryonic mouse heart suggest a direct role for cilia in cardiac morphogenesis.
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DOI:
10.1002/dvdy.21669
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发表时间:
2008-09
影响因子:
2.5
通讯作者:
Brueckner, Martina
Brueckner, Martina
中科院分区:
生物学3区
文献类型:
--
作者:
Slough, Jennifer;Cooney, Laura;Brueckner, Martina

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初级纤毛是许多充满液体的器官中信号传导、化学传感和机械传感所必需的,因此纤毛也可能在心脏发育中起直接作用。它们通过在胚胎组织者(节点)的功能对心脏LR不对称的发展至关重要。我们发现,纤毛被发现在小鼠胚胎心脏在e9.5-e12.5。我们证明了在缺乏纤毛的e9.5小鼠胚胎中内膜垫(ECCs)和致密心肌(CM)的异常发育。相比之下,心脏胚胎异常LR发展由于瘫痪,但结构正常,节点纤毛显示不太严重的ECC缺陷和正常CM。这些观察结果表明,一个被称为心脏纤毛的纤毛子集在心脏发育中是必需的,独立于它们在LR发育中的功能。心脏纤毛的一个可能的功能是作为机械传感器,整合流量,心脏功能和形态发生。
Primary cilia are required for signaling, chemosensing and mechanosensing in many fluid-filled organs, thus cilia could also have a direct role in heart development. They are essential to the development of cardiac LR asymmetry via their function at the embryonic organizer (node). We show that cilia are found in the mouse embryo heart at e9.5 – e12.5. We demonstrate abnormal development of the endocardial cushions (ECCs) and compact myocardium (CM) in e9.5 mouse embryos with absent cilia. In contrast, hearts from embryos with abnormal LR development due to paralyzed, but structurally normal, node cilia show less severe ECC defects and normal CM. These observations suggest that a subset of cilia called cardiac cilia are required in cardiac development independently from their function in LR development. One possible function of cardiac cilia is as mechanosensors, integrating flow, cardiac function and morphogenesis.
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