...
首页> 外文期刊>Neuron >A Conserved Regulatory Logic Controls Temporal Identity in Mouse Neural Progenitors
【24h】

A Conserved Regulatory Logic Controls Temporal Identity in Mouse Neural Progenitors

机译:保守的调节逻辑控制小鼠神经祖细胞中的时间身份。

获取原文
获取原文并翻译 | 示例
           

摘要

Neural progenitors alter their output over time to generate different types of neurons and glia in specific chronological sequences, but this process remains poorly understood in vertebrates. Here we show that Casz1, the vertebrate ortholog of the Drosophila temporal identity factor castor, controls the production of mid-/late-born neurons in the murine retina. Casz1 is expressed from mid/late stages in retinal progenitor cells (RPCs), and conditional deletion of Casz1 increases production of early-born retinal neurons at the expense of later-born fates, whereas precocious misexpression of Casz1 has the opposite effect. In both cases, cell proliferation is unaffected, indicating that Casz1 does not control the timing of cell birth but instead biases RPC output directly. Just as Drosophila castor lies downstream of the early temporal identity factor hunchback, we find that the hunchback ortholog Ikzf1 represses Casz1. These results uncover a conserved strategy regulating temporal identity transitions from flies to mammals.
机译:神经祖细胞会随时间改变其输出,以特定的时间顺序生成不同类型的神经元和神经胶质,但在脊椎动物中对此过程了解甚少。在这里,我们显示Casz1,果蝇时间同一性因子蓖麻的脊椎动物直系同源基因,控制鼠视网膜中/晚期出生神经元的产生。 Casz1在视网膜祖细胞(RPCs)的中晚期进行表达,有条件地删除Casz1会增加早期视网膜神经元的产生,但会以后期出生的命运为代价,而过早的Casz1错误表达则具有相反的作用。在这两种情况下,细胞增殖均不受影响,表明Casz1不控制细胞出生的时间,而是直接偏置RPC输出。正如果蝇蓖麻位于早期时间同一性因子驼背的下游一样,我们发现驼背直向同源物Ikzf1抑制了Casz1。这些结果揭示了一种保守的策略,该策略调节了从蝇到哺乳动物的时间身份转变。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号