Stemness Activity Underlying Whole Brain Regeneration in a Basal Chordate.

Stemness Activity Underlying Whole Brain Regeneration in a Basal Chordate.
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DOI:
10.3390/cells11233727
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发表时间:
2022-11-22
期刊:
影响因子:
6
通讯作者:
Shenkar, Noa
Shenkar, Noa
中科院分区:
生物学2区
文献类型:
--
作者:
Gordon, Tal;Zaquin, Tal;Kowarsky, Mark Alec;Voskoboynik, Yotam;Hendin, Noam;Wurtzel, Omri;Caicci, Federico;Manni, Lucia;Voskoboynik, Ayelet;Shenkar, Noa

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了解损伤后神经元如何再生仍然是再生医学的核心挑战。成年哺乳动物在中枢神经系统(CNS)中再生新神经元的能力非常有限。相比之下,基部脊索动物Polycarpa mytiligera可以在完全移除后的7天内再生其整个CNS。转录组测序、细胞标记和体内增殖试验表明,CNS再生是由新形成的神经子代和与增强的干细胞活性相关的神经发育途径的激活介导的。分析239个活化途径的表达,使定量了解基因集富集模式在关键再生阶段。这项研究揭示的控制再生能力的分子和细胞机制可用于开发创新方法,以增强包括人类在内的密切相关的脊索动物物种的神经发生。
Understanding how neurons regenerate following injury remains a central challenge in regenerative medicine. Adult mammals have a very limited ability to regenerate new neurons in the central nervous system (CNS). In contrast, the basal chordate Polycarpa mytiligera can regenerate its entire CNS within seven days of complete removal. Transcriptome sequencing, cellular labeling, and proliferation in vivo essays revealed that CNS regeneration is mediated by a newly formed neural progeny and the activation of neurodevelopmental pathways that are associated with enhanced stem-cell activity. Analyzing the expression of 239 activated pathways enabled a quantitative understanding of gene-set enrichment patterns at key regeneration stages. The molecular and cellular mechanisms controlling the regenerative ability that this study reveals can be used to develop innovative approaches to enhancing neurogenesis in closely-related chordate species, including humans.
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