Lateral line, otic and epibranchial placodes: developmental and evolutionary links?
Lateral line, otic and epibranchial placodes: developmental and evolutionary links?
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DOI：
10.1002/jez.b.21188
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发表时间：
2008-06-15
影响因子：
2.2
通讯作者：
Mccole, Ruth B.
中科院分区：
文献类型：
--
作者：
Baker, Clare V. H.;O'Neill, Paul;Mccole, Ruth B.
两个胚胎细胞群，神经嵴和颅外胚层基板，在它们之间产生了许多脊椎动物的独特特征。神经源性基板衍生物对于感知外部和内部刺激至关重要。在这篇推测性的综述中，我们讨论了通常被认为是完全独立的两个基板系列之间潜在的发育和进化关系：侧线基板，其形成前鳃侧线系统的机械感觉毛细胞和电感受毛细胞以及它们的传入神经元，和上鳃基板（膝状体、岩状体和结状体），其形成具有来自外部和内部环境的输入的Phox 2b+内脏感觉神经元。我们说明了他们的发展，我们最近获得的鲨鱼胚胎的分子数据，我们描述了他们的衍生物，包括可能膝状体基板起源的mechanosensory感觉器官与第一咽袋/裂缝（anatriote spiracular器官/anatriote paratympanic器官）。我们讨论了侧线和鳃上基板可以以不同的方式与耳基板（形成内耳及其传入神经元），以及如何两者都是重要的保护性躯体反射。最后，我们提出了一个高度推测性的建议，其进化后代今天的细胞的原始功能包括侧线，耳和上鳃基板的衍生物，即它们产生的感觉受体和神经元的Phox 2b依赖的保护反射电路。我们希望这篇综述将激发辩论，并重新审视这些看似不同和独立的基板之间可能的发展和进化关系。
Two embryonic cell populations, the neural crest and cranial ectodermal placodes, between them give rise to many of the unique characters of vertebrates. Neurogenic placode derivatives are vital for sensing both external and internal stimuli. In this speculative review, we discuss potential developmental and evolutionary relationships between two placode series that are usually considered to be entirely independent: lateral line placodes, which form the mechanosensory and electroreceptive hair cells of the anamniote lateral line system as well as their afferent neurons, and epibranchial placodes (geniculate, petrosal and nodose), which form Phox2b+ visceral sensory neurons with input from both the external and internal environment. We illustrate their development using molecular data we recently obtained in shark embryos, and we describe their derivatives, including the possible geniculate placode origin of a mechanosensory sense organ associated with the first pharyngeal pouch/cleft (the anamniote spiracular organ/amniote paratympanic organ). We discuss how both lateral line and epibranchial placodes can be related in different ways to the otic placode (which forms the inner ear and its afferent neurons), and how both are important for protective somatic reflexes. Finally, we put forward a highly speculative proposal about the original function of the cells whose evolutionary descendants today include the derivatives of the lateral line, otic and epibranchial placodes, namely that they produced sensory receptors and neurons for Phox2b-dependent protective reflex circuits. We hope this review will stimulate both debate and a fresh look at possible developmental and evolutionary relationships between these seemingly disparate and independent placodes.
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影响因子：
2.7
作者：
Alsina, B;Abelló, G;Giraldez, F
通讯作者：
Giraldez, F
DOI：
10.1073/pnas.0600805103
发表时间：
2006-06-06
影响因子：
11.1
作者：
Dufour, Heloise D.;Chettouh, Zoubida;Brunet, Jean-Francois
通讯作者：
Brunet, Jean-Francois
影响因子：
1.2
作者：
Braun, CB;Northcutt, RG
通讯作者：
Northcutt, RG
影响因子：
56.9
作者：
BARRY, MA;BOORD, RL
通讯作者：
BOORD, RL
影响因子：
2.9
作者：
Freitas, R;Zhang, GJ;Cohn, MJ
通讯作者：
Cohn, MJ