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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4D 成像揭示体节形态发生过程中阶段依赖性随机和定向细胞运动

DOI:
10.1101/280883
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发表时间:
2018
期刊:
--
影响因子:
--
通讯作者:
McColl J
McColl J
中科院分区:
--
文献类型:
--
作者:
McColl J

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体节是在脊椎动物发育过程中由未分割的中胚层按规则顺序形成的成对的胚胎节。虽然是短暂的结构,但它们具有根本的重要性,因为它们在躯干中产生肌肉骨骼系统的细胞谱系,如软骨、肌腱、骨、内皮细胞和骨骼肌。令人惊讶的是,很少有人知道体节分化过程中的形态学转变的细胞动力学基础。在这里,我们解决这个问题,通过检查细胞重排和形态发生在分化体节使用活的多光子成像的转基因鸡胚,其中所有的细胞表达膜结合的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,以研究广泛的形态学转变。此外,通过使用定量分析和细胞跟踪,我们第一次捕捉到了定向运动的dermomyotomal祖细胞对rostro-medial域的dermomyotome,骨骼肌形成启动。
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.
在外轴初级肌节形态发生过程中,不对称细胞分裂集中在真皮肌节背内侧唇中
DOI: --
发表时间: 2005
期刊: Anatomy and Embryology
影响因子: --
作者:
S. Venters;C. Ordahl
通讯作者: C. Ordahl
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期刊: Development (Cambridge, England)
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发表时间: 1988-01-01
期刊: ANATOMY AND EMBRYOLOGY
影响因子: --
作者:
KAEHN, K;JACOB, HJ;POELMANN, RE
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