The effect of Rosovitine on mPSM explants: a real time analysis

The effect of Rosovitine on mPSM explants: a real time analysis
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Rosovitine 对 mPSM 外植体的影响:实时分析

DOI:
10.1101/789446
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发表时间:
2019
期刊:
--
影响因子:
--
通讯作者:
Moya L
Moya L
中科院分区:
--
文献类型:
--
作者:
Moya L

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先前我们使用固定组织技术表明,用一系列药理学抑制剂处理鸡胚产生增加的NICD水平、增加的NICD半衰期和更长的片段(Wiederman等人,2015)。在这里,我们测量的药理学扰动(Roscovtine)的影响,使用一个真实的时间报告的体节发生时钟。在使用经验模式分解处理报告信号后,我们测量了mPSM外植体中的振荡器周期,并发现与先前的研究一致,分割时钟的周期在Roscovitine治疗后增加。然而,我们也有新的发现,mPSM组织的分化率也在Roscovitine治疗后增加。回到以前的研究,我们发现,只有当波前速度也增加时,体节大小和振子周期的测量增加才与时钟和波前模型一致。
Previously we showed, using fixed tissue techniques, that treatment of chick embryos with a family of pharmacological inhibitors yields increased levels of NICD, an increased NICD half life and longer segments (Wiederman et al., 2015). Here we measure the effect of one of the pharmacological perturbations (Roscovtine) using a real time reporter of the somitogenesis clock. After processing the reporter signal using empirical mode decomposition, we measure the oscillator period in mPSM explants and find, in agreement with the previous study, that the period of the segmentation clock increases upon Roscovitine treatment. However, we also make the novel discovery that the differentiation rate of the mPSM tissue also increases upon Roscovitine treatment. Returning to the previous study, we find that the measured increases in somite size and oscillator period are only consistent with the clock and wavefront model if the wavefront velocity also increased.
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