Evolution of the let-7 microRNA family.

Evolution of the let-7 microRNA family.
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Let-7 microRNA家族的演变。

DOI:
10.4161/rna.18974
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发表时间:
2012-03
期刊:
影响因子:
4.1
通讯作者:
Stadler PF
Stadler PF
中科院分区:
生物学3区
文献类型:
--
作者:
Hertel J;Bartschat S;Wintsche A;Otto C;Students of the Bioinformatics Computer Lab;Stadler PF

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早期两侧对称动物进化中身体结构复杂性的增加与 microRNA 的出现和多样化相关。这些小RNA通过调节涉及细胞命运选择以及多能性和分化之间转变的基因表达的时间转变来指导动物发育。 mir-100 是两种已知的 microRNA 之一,其起源可以追溯到两侧对称动物的祖先之前。在双边对称动物中,它似乎在多顺反子转录本中与发育的两个关键调节因子 let-7 和 mir-125 稳定相关。在脊椎动物中,这三个 microRNA 家族已经扩展形成一个复杂的发育调节系统。在这篇文章中,我们解开了let-7基因座的进化历史,该基因座在线虫、扁形动物和后口动物中独立重组。脊椎动物和尾索动物的共同祖先中第二个let-7基因座的建立早于脊椎动物特异性基因组复制,这导致了let-7家族的快速扩张。
The increase of bodyplan complexity in early bilaterian evolution is correlates with the advent and diversification of microRNAs. These small RNAs guide animal development by regulating temporal transitions in gene expression involved in cell fate choices and transitions between pluripotency and differentiation. One of the two known microRNAs whose origins date back before the bilaterian ancestor is mir-100. In Bilateria, it appears stably associated in polycistronic transcripts with let-7 and mir-125, two key regulators of development. In vertebrates, these three microRNA families have expanded to form a complex system of developmental regulators. In this contribution, we disentangle the evolutionary history of the let-7 locus, which was restructured independently in nematodes, platyhelminths, and deuterostomes. The foundation of a second let-7 locus in the common ancestor of vertebrates and urochordates predates the vertebrate-specific genome duplications, which then caused a rapid expansion of the let-7 family.
对箭虫腹侧神经中枢的新认识:对毛颌动物(箭虫)系统发育位置和两侧对称动物神经系统进化的影响。
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发表时间: 2007-05-18
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DOI: 10.1007/s00239-004-2613-z
发表时间: 2004-08-01
影响因子: 3.9
作者:
Hoegg, S;Brinkmann, H;Meyer, A
通讯作者: Meyer, A