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Expression profiling of planarians shed light on a dual role of programmed cell death during the regeneration

机译:平面图的表达分析在再生期间编程细胞死亡的双重作用

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Abstract Most animals hold the ability to regenerate damaged cells, tissues, and even any lost part of their bodies. To date, there is little known about the precise regulatory mechanism of regeneration and many fundamental questions remain unanswered. To further understand the precise regulatory mechanism of regeneration, we used planarian Dugesia japonica as a model and sequenced the transcriptomes of their regenerated tissues at different regeneration stages. Through de novo assembly and expression profiling, we found that Heat shock protein and MAPK pathway were involved into early response of regeneration in D. japonica . In addition, immune response, cell proliferation, and migration were activated during regeneration. Of notes, our results revealed a specific functional role of programmed cell death (PCD) in regeneration of D. japonica . PCD may not only remove the damaged and superfluous tissues for further patterning with regenerated tissues, but also provide signals to trigger neoblasts proliferation and differentiation directly. Together, our results revealed Heat shock protein and MAPK pathway mediated early response of regeneration and found a dual role of PCD in regeneration D. japonica . Meanwhile, we constructed regulatory networks of apoptosis, autophagy, and related signaling pathways and proposed a schematic model, which provided a global landscape of regeneration.
机译:摘要大多数动物都持有能够再生受损细胞,组织,甚至任何丢失的身体。迄今为止,关于再生的精确监管机制,许多基本问题仍然存在毫无疑问。为了进一步了解再生的精确调节机制,我们将胰岛病毒鲨粳杂志用作模型,并在不同再生阶段测序其再生组织的转录组。通过De Novo组装和表达分析,我们发现热休克蛋白和MAPK途径涉及再生在D. japonica中的早期反应。此外,在再生期间激活免疫应答,细胞增殖和迁移。作者:王莹,概述揭示了编程细胞死亡(PCD)在D. japonica的再生中的特定功能作用。 PCD不仅可以去除受再生组织的进一步图案化的损坏和多余的组织,还可以提供直接引发新细胞增殖和分化的信号。我们的结果揭示了热休克蛋白和MAPK途径介导的再生早期反应,发现PCD在再生D.粳稻中的双重作用。同时,我们构建了凋亡,自噬和相关信号通路的调节网络,提出了一种示意图,提供了全球再生景观。

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