What's left in asymmetry?

What's left in asymmetry?
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DOI:
10.1002/dvdy.21560
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发表时间:
2008-12
影响因子:
2.5
通讯作者:
Levin, Michael
Levin, Michael
中科院分区:
生物学3区
文献类型:
--
作者:
Aw, Sherry;Levin, Michael
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左右模式是形态发生的一个有趣的问题,它将进化和细胞信号机制联系在一起,跨越了许多组织水平。在过去的15年里,在几个模式物种的胚胎中阐明这一过程的分子细节方面取得了巨大的进展。虽然该领域外的许多人似乎认为这一途径的基本方面现在已经得到解决,但研究不对称的工作者在具体机制的细节上面临着相当大的不确定性,整个门类的机制缺乏概念上的统一,以及任何流行的模型系统都没有研究的重要问题。在这里,我们认为来自临床症状、隐匿性不对称和双侧雌雄不对称的数据,虽然没有在关于下丘脑不对称的主流工作中突出地出现,但指出了关于不对称的关键和根本的知识差距。我们确定了12个大问题,这些问题为该领域的根本性新进展提供了令人兴奋的机会。
Left-right patterning is a fascinating problem of morphogenesis, linking evolutionary and cellular signaling mechanisms across many levels of organization. In the last 15 years, enormous progress has been made in elucidating the molecular details of this process in embryos of several model species. While many outside the field seem to believe that the fundamental aspects of this pathway are now solved, workers on asymmetry are faced with considerable uncertainties over the details of specific mechanisms, a lack of conceptual unity of mechanisms across phyla, and important questions that are not being pursued in any of the popular model systems. Here, we suggest that data from clinical syndromes, cryptic asymmetries, and bilateral gynandromorphs, while not figuring prominently in the mainstream work on LR asymmetry, point to crucial and fundamental gaps of knowledge about asymmetry. We identify 12 big questions that provide exciting opportunities for fundamental new advances in this field.
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