MicroRNA-mediated conversion of human fibroblasts to neurons.

MicroRNA-mediated conversion of human fibroblasts to neurons.
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DOI:
10.1038/nature10323
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发表时间:
2011-07-13
期刊:
影响因子:
64.8
通讯作者:
Crabtree, Gerald R.
Crabtree, Gerald R.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Yoo, Andrew S.;Sun, Alfred X.;Li, Li;Shcheglovitov, Aleksandr;Portmann, Thomas;Li, Yulong;Lee-Messer, Chris;Dolmetsch, Ricardo E.;Tsien, Richard W.;Crabtree, Gerald R.

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已发现神经源转录因子和进化上保守的信号通路有助于神经元的形成。然而,microRNA (miRNA) 在神经发生中的指导作用仍有待探索。我们最近发现 miR-9* 和 miR-124 指导 SWI/SNF 样 BAF 染色质重塑复合物的组成变化,这是一个对神经元分化和功能很重要的过程。在神经祖细胞接近有丝分裂退出时,miR-9* 和 miR-124 抑制神经祖细胞 (np)BAF 染色质重塑复合物的 BAF53a 亚基。有丝分裂退出后,BAF53a 被 BAF53b 取代,BAF45a 被 BAF45b 和 BAF45c 取代,然后并入有丝分裂后功能所必需的神经元特异性 (n)BAF 复合物中。由于 miR-9/9* 和 miR-124 还控制调节神经元分化和功能的多个基因,因此我们提出这些 miRNA 可能有助于神经元的命运。在这里,我们表明,人成纤维细胞中 miR-9/9* 和 miR-124 (miR-9/9*-124) 的表达诱导其转化为神经元,这一过程由 NEUROD2 促进。进一步添加神经源性转录因子 ASCL1 和 MYT1L 可增强转化率和转化神经元的成熟,而在没有 miR-9/9*-124 的情况下单独表达这些转录因子是无效的。这些研究表明,涉及 miR-9/9*-124 的遗传回路可以在神经命运决定中发挥指导作用。
Neurogenic transcription factors and evolutionarily conserved signalling pathways have been found to be instrumental in the formation of neurons. However, the instructive role of microRNAs (miRNAs) in neurogenesis remains unexplored. We recently discovered that miR-9* and miR-124 instruct compositional changes of SWI/SNF-like BAF chromatin-remodelling complexes, a process important for neuronal differentiation and function. Nearing mitotic exit of neural progenitors, miR-9* and miR-124 repress the BAF53a subunit of the neural-progenitor (np)BAF chromatin-remodelling complex. After mitotic exit, BAF53a is replaced by BAF53b, and BAF45a by BAF45b and BAF45c, which are then incorporated into neuron-specific (n)BAF complexes essential for post-mitotic functions. Because miR-9/9* and miR-124 also control multiple genes regulating neuronal differentiation and function, we proposed that these miRNAs might contribute to neuronal fates. Here we show that expression of miR-9/9* and miR-124 (miR-9/9*-124) in human fibroblasts induces their conversion into neurons, a process facilitated by NEUROD2. Further addition of neurogenic transcription factors ASCL1 and MYT1L enhances the rate of conversion and the maturation of the converted neurons, whereas expression of these transcription factors alone without miR-9/9*-124 was ineffective. These studies indicate that the genetic circuitry involving miR-9/9*-124 can have an instructive role in neural fate determination.
通过确定的因素将成纤维细胞直接转化为功能性神经元。
DOI: 10.1038/nature08797
发表时间: 2010-02-25
期刊: NATURE
影响因子: 64.8
作者:
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发表时间: 2008-12-31
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
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发表时间: 2006-04-01
期刊: STEM CELLS
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发表时间: 1999-08-17
影响因子: 11.1
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发表时间: 2007-10-04
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