4D imaging reveals stage dependent random and directed cell motion during somite morphogenesis.

4D imaging reveals stage dependent random and directed cell motion during somite morphogenesis.
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DOI:
10.1038/s41598-018-31014-3
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发表时间:
2018-08-23
期刊:
影响因子:
4.6
通讯作者:
Münsterberg A
Münsterberg A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
McColl J;Mok GF;Lippert AH;Ponjavic A;Muresan L;Münsterberg A

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体节是在脊椎动物发育过程中从不分节的中胚层按规则序列形成的成对胚胎节段。虽然是短暂结构,但它们具有根本重要性,因为它们在躯干中产生肌肉骨骼系统的细胞谱系,例如软骨、肌腱、骨骼、内皮细胞和骨骼肌。令人惊讶的是,人们对体节分化过程中形态转变背后的细胞动力学知之甚少。在这里,我们通过使用转基因鸡胚胎的活体多光子成像来检查分化体节的细胞重排和形态发生来解决这个问题,其中所有细胞都表达膜结合的 GFP。我们特别关注体节内两个主要区域(内侧和外侧区域)的动态细胞变化,以研究广泛的形态转变。此外,通过使用定量分析和细胞追踪,我们首次捕获了皮肌节祖细胞向皮肌节的鼻内侧区域的定向运动,骨骼肌形成的起始处。
Somites are paired embryonic segments that form in a regular sequence from unsegmented mesoderm during vertebrate development. Although transient structures they are of fundamental importance as they generate cell lineages of the musculoskeletal system in the trunk such as cartilage, tendon, bone, endothelial cells and skeletal muscle. Surprisingly, very little is known about cellular dynamics underlying the morphological transitions during somite differentiation. Here, we address this by examining cellular rearrangements and morphogenesis in differentiating somites using live multi-photon imaging of transgenic chick embryos, where all cells express a membrane-bound GFP. We specifically focussed on the dynamic cellular changes in two principle regions within the somite, the medial and lateral domains, to investigate extensive morphological transformations. Furthermore, by using quantitative analysis and cell tracking, we capture for the first time a directed movement of dermomyotomal progenitor cells towards the rostro-medial domain of the dermomyotome, where skeletal muscle formation initiates.
DOI: 10.1111/joa.12353
发表时间: 2015-09
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影响因子: 2.4
作者:
Berti F;Nogueira JM;Wöhrle S;Sobreira DR;Hawrot K;Dietrich S
通讯作者: Dietrich S
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期刊: ANATOMY AND EMBRYOLOGY
影响因子: --
作者:
KAEHN, K;JACOB, HJ;POELMANN, RE
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