TGF-β Signaling Regulates the Differentiation of Motile Cilia.

TGF-β Signaling Regulates the Differentiation of Motile Cilia.
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DOI:
10.1016/j.celrep.2015.04.025
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发表时间:
2015-05-19
期刊:
影响因子:
8.8
通讯作者:
Kato Y
Kato Y
中科院分区:
生物学1区
文献类型:
--
作者:
Tözser J;Earwood R;Kato A;Brown J;Tanaka K;Didier R;Megraw TL;Blum M;Kato Y

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纤毛是一种具有运动和/或感觉相关功能的小细胞器,在发育和稳态过程中起着至关重要的作用。虽然已经报道了许多控制纤毛组装的分子或信号转导途径,但纤毛长度控制的机制仍然是个谜。在这里,我们报告Smad 2依赖性TGF-β信号传导影响爪蟾左右(LR)组织者,胃腔顶板(GRP)以及神经管和表皮的运动纤毛长度。阻断TGF-β信号传导导致表皮多纤毛细胞(MCC)中纤毛的过渡区蛋白B 9D 1/MSKR-1缺失。有趣的是,这种TGF-β活性不是由纤毛发生的已知主要调节因子Multicilin,Foxj 1和RFX 2介导的。这些数据表明,TGF-β信号传导对于过渡区的功能至关重要,这反过来又可能影响纤毛长度的调节。
The cilium is a small cellular organelle with motility and/or sensory related functions that plays a crucial role during developmental and homeostatic processes. Although many molecules or signal transduction pathways that control cilia assembly have been reported, the mechanisms of ciliary length control have remained enigmatic. Here we report that Smad2-dependent TGF-β signaling impacts on the length of motile cilia at the Xenopus left-right (LR) organizer, the gastrocoel roof plate (GRP), as well as at the neural tube and the epidermis. Blocking TGF-β signaling resulted in the absence of the transition zone protein B9D1/MSKR-1 from cilia in multi-ciliated cells (MCCs) of the epidermis. Interestingly, this TGF-β activity is not mediated by the known major regulators of ciliogenesis, Multicilin, Foxj1 and RFX2. These data indicate that TGF-β signaling is crucial for the function of the transition zone, which in turn may affect the regulation of cilia length.
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