MATH5 controls the acquisition of multiple retinal cell fates.

MATH5 controls the acquisition of multiple retinal cell fates.
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DOI:
10.1186/1756-6606-3-36
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发表时间:
2010-11-18
期刊:
影响因子:
3.6
通讯作者:
Gan L
Gan L
中科院分区:
医学3区
文献类型:
--
作者:
Feng L;Xie ZH;Ding Q;Xie X;Libby RT;Gan L

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Math 5无效突变导致视网膜神经节细胞(RGC)的丧失以及无长突细胞和视锥细胞的同时增加。然而,目前尚不清楚是否有一个Math 5谱系细胞的细胞命运开关在Math 5的情况下,以及是否Math 5细胞自主调节上述视网膜神经元的分化。在这里,我们使用由Math 5-Cre敲入等位基因激活的条件性GFP报告基因(Z/EG)对发育中的小鼠视网膜中的Math 5表达细胞进行了谱系分析。我们表明,在正常视网膜发生过程中,Math 5谱系细胞主要发育为RGCs、水平细胞、视锥光感受器、视杆光感受器和无长突细胞。有趣的是,Math 5谱系细胞的无长突细胞主要是GABA能、胆碱能和A2亚型,表明Math 5在无长突亚型的特化中起作用。在缺乏Math 5的情况下,更多的Math 5谱系细胞经历从RGC到上述视网膜细胞亚型的细胞命运转换,偶尔也会转换为锥双极细胞和Müller细胞。这种细胞命运选择的变化伴随着NEUROD 1、RXRγ和BHLHB 5的上调,这些转录因子是视网膜细胞(而不是RGCs)分化所必需的。此外,Math 5的缺失导致早期祖细胞无法退出细胞周期,并导致保留在细胞周期中的Math 5谱系细胞显著增加。总的来说,这些数据表明Math 5在视网膜发生过程中通过不同的机制调节多种视网膜细胞类型的产生。
Math5-null mutation results in the loss of retinal ganglion cells (RGCs) and in a concurrent increase of amacrine and cone cells. However, it remains unclear whether there is a cell fate switch of Math5-lineage cells in the absence of Math5 and whether MATH5 cell-autonomously regulates the differentiation of the above retinal neurons. Here, we performed a lineage analysis of Math5-expressing cells in developing mouse retinas using a conditional GFP reporter (Z/EG) activated by a Math5-Cre knock-in allele. We show that during normal retinogenesis, Math5-lineage cells mostly develop into RGCs, horizontal cells, cone photoreceptors, rod photoreceptors, and amacrine cells. Interestingly, amacrine cells of Math5-lineage cells are predominately of GABAergic, cholinergic, and A2 subtypes, indicating that Math5 plays a role in amacrine subtype specification. In the absence of Math5, more Math5-lineage cells undergo cell fate conversion from RGCs to the above retinal cell subtypes, and occasionally to cone-bipolar cells and Müller cells. This change in cell fate choices is accompanied by an up-regulation of NEUROD1, RXRγ and BHLHB5, the transcription factors essential for the differentiation of retinal cells other than RGCs. Additionally, loss of Math5 causes the failure of early progenitors to exit cell cycle and leads to a significant increase of Math5-lineage cells remaining in cell cycle. Collectively, these data suggest that Math5 regulates the generation of multiple retinal cell types via different mechanisms during retinogenesis.
DOI: 10.1016/0896-6273(88)90205-x
发表时间: 1988-03-01
期刊: NEURON
影响因子: 16.2
作者:
HOLT, CE;BERTSCH, TW;HARRIS, WA
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DOI: 10.1523/jneurosci.5237-08.2009
发表时间: 2009-04-01
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子: --
作者:
Ding Q;Chen H;Xie X;Libby RT;Tian N;Gan L
通讯作者: Gan L
DOI: 10.1016/s0092-8674(00)80439-0
发表时间: 1997-11-14
期刊: CELL
影响因子: 64.5
作者:
Furukawa, T;Morrow, EM;Cepko, CL
通讯作者: Cepko, CL