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相关概念视频

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Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata...
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After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
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The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
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A Microfluidics Approach for the Functional Investigation of Signaling Oscillations Governing Somitogenesis
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控制胚胎发育的振荡控制.

Angad Singh Chandel1,2, Kemal Keseroglu1, Ertuğrul M Özbudak1,3

  • 1Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.

Development (Cambridge, England)
|May 10, 2024
PubMed
概括

基因表达振荡精确地控制胚胎发育时间. 这些生物节奏调节了关键过程,如脊椎动物的体生和干细胞分化.

关键词:
肌肉发育 (Myogenesis) 是一种肌肉发育的过程.神经新生是什么意思 神经新生是什么意思振荡的振荡 振荡的振荡胰腺是什么? 胰腺是什么?分段时钟的分段时间.

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科学领域:

  • 发展生物学 发展生物学
  • 分子生物学分子生物学
  • 遗传学 是一个遗传学.

背景情况:

  • 胚胎发育依赖于精确的遗传编程,以便及时进展.
  • 基因表达振荡是控制发育时间的关键机制.
  • 了解这些振荡对于破译发育过程至关重要.

研究的目的:

  • 审查基因表达振荡如何编码脊椎动物胚胎发育中的时间信息.
  • 检查somitogenesis,神经发生,肌发生和胰腺发育中的振荡.
  • 为了比较关键调节基因的空间和时间表达模式.

主要方法:

  • 关于胚胎发育中的基因表达振荡现有文献的综述.
  • 对His/Her基因和目标的基因表达模式 (同步/异步,时间尺度) 的分析.
  • 对这些振荡的功能作用的实验证据的总结.

主要成果:

  • 基因表达振荡起着各种各样的作用,控制体形成期和干细胞分化.
  • 在Hes/Her基因的空间和时间表达模式的相似性和差异在各个组织中被确定.
  • 实验数据支持这些振荡在发育过程中的功能意义.

结论:

  • 基因表达振荡是脊椎动物胚胎发育中的时间控制的基础.
  • 这些振荡表现出取决于背景的功能,影响着不同的发育事件.
  • 需要进一步的研究来解决有关振荡机制和作用的悬而未决的问题.