Conservation of EMT transcription factor function in controlling pluripotent adult stem cell migration in vivo in planarians

Conservation of EMT transcription factor function in controlling pluripotent adult stem cell migration in vivo in planarians
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EMT转录因子在控制涡虫体内多能成体干细胞迁移中的功能保守

DOI:
10.1101/080853
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发表时间:
2016
期刊:
--
影响因子:
--
通讯作者:
Abnave P
Abnave P
中科院分区:
--
文献类型:
--
作者:
Abnave P

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干细胞的迁移是所有后生动物生理学的基本过程。为了维持组织,稳态信号机制必须允许干细胞或其后代到达正确的位置并分化为替代细胞。这种需要在由创伤或病原性感染引起的组织损伤后甚至更加迫切。致瘤性癌症干细胞及其后代在成人中的不适当迁移也是转移形成的基础。尽管如此,很少有机制研究解决成人组织损伤后修复过程中的干细胞迁移。在这里,我们提出了一个屏蔽的X射线照射试验,使我们能够观看细胞迁移的高度再生的涡虫模型系统。我们证明,我们可以仔细观察迁移行为,并揭示新的现象,有关迁移,以前没有观察到的Planarians。这些包括在没有损伤的情况下观察细胞迁移,特别是在向前的方向。我们证明了这种稳态迁移需要极性决定因素,迁移干细胞的形态和分布暗示了与上皮向间质转化(EMT)相关的机制。与此一致,我们发现,一个涡虫蜗牛家族转录因子是必要的干细胞和干细胞后代迁移到伤口部位,并建立迁移形态。总体而言,我们的数据建立了Planarians作为进一步深入研究细胞迁移的合适模型,有可能产生与人类生物学相关的新见解,包括癌症进展期间的增生。
The migration of stem cells is an essential process underpinning the physiology of all metazoan animals. In order for tissues to be maintained, homeostatic signaling mechanisms must allow stem cells or their progeny to arrive at the correct position and differentiate into replacement cells. This need is even more acute after tissue damage by wounding or pathogenic infections. Inappropriate migration of tumorigenic cancer stem cells and their progeny in adults also underpins the formation of metastases. Despite this, few mechanistic studies address stem cell migration during repair after injury in adult tissues. Here we present a shielded X-ray irradiation assay that allows us to watch cell migration in the highly regenerative planarian model system. We demonstrate that we can carefully observe migratory behavior and reveal new phenomena concerning migration, not previously observed in planarians. These include observation of cell migration specifically in an anterior direction in the absence of injury. We demonstrate that this homeostatic migration requires the polarity determinantnotum.The morphology and distribution of migrating stem cells implicates mechanisms associated with epithelial to mesenchymal transition (EMT). In agreement with this we find that a planarian Snail family transcription factor is necessary for stem cell and stem cell progeny migration to wound sites and for the establishment of migratory morphology. Overall our data establish planarians as a suitable model for further in depth study of cell migration, with the potential to yield novel insights relevant to human biology including hyperplasia during cancer progression.
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发表时间: 2015-12-15
期刊: DEVELOPMENT
影响因子: 4.6
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期刊: Oncogene 23
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DOI: --
发表时间: 2016
影响因子: --
作者:
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