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相关概念视频

Gastrulation01:56

Gastrulation

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 will form...
Cell Migration01:09

Cell Migration

Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
Cell Migration01:19

Cell Migration

Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
Cell Polarization by Rho Proteins01:21

Cell Polarization by Rho Proteins

Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...

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整个组织的影响在辐射神经元迁移中取代了细胞内在基因功能.

Andi H Hansen1, Florian M Pauler1, Michael Riedl1

  • 1Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria.

Oxford open neuroscience
|April 10, 2024
PubMed
概括

全组织基因效应,而不仅仅是细胞自主效应,是指导哺乳动物新皮层发育期间神经元迁移的关键. 这一发现影响了对神经发育疾病的理解.

关键词:
4D实时成像 4D实时成像细胞自主基因功能功能大脑皮层发育大脑皮层的发展.使用双标记器 (MADM) 进行马赛克分析.神经元迁移的神经元迁移非细胞自主作用的非细胞自主作用.单细胞遗传学 单细胞遗传学

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科学领域:

  • 神经科学是一个神经科学.
  • 发展生物学 发展生物学
  • 遗传学 是一个遗传学.

背景情况:

  • 哺乳动物新皮质的发育涉及精确的神经和质细胞组织成六层 (laminae).
  • 在皮质层层中发生的干扰与神经发育障碍有关.
  • 辐射投射神经元迁移对于形成皮层至关重要,但组织范围内的遗传因素与细胞自主基因功能的作用尚不清楚.

研究的目的:

  • 研究细胞自主基因功能的相对贡献和在新皮质中辐射投射神经元迁移的组织范围遗传效应.
  • 阐明组织内更广泛的遗传场景对神经元迁移表型的影响.

主要方法:

  • 使用双标记 (MADM) 技术进行马赛克分析,用于诱导,稀疏或全局的基因功能删除.
  • 采用定量单细胞表型化来分析迁移模式.
  • 集成的计算建模来解释基于MADM的基因剥离数据.

主要成果:

  • 发现,在调节辐射神经元迁移方面,全局,组织范围的基因效应在细胞自主基因功能上占主导地位,尽管这因基因而异.
  • 组织的遗传景观显著影响到单个皮质投射神经元的迁移表型.
  • 证明整个组织的影响对于理解正常皮质发育和形至关重要.

结论:

  • 新皮质中的神经元迁移受到组织的整体遗传环境的显著影响,而不仅仅是单个细胞遗传学.
  • 这些发现表明,全球组织范围的影响是皮层发育的焦点形和其他神经疾病的重要病因组成部分.
  • 强调在神经发育研究中考虑系统性遗传相互作用的重要性.