相关实验视频
Updated: Apr 10, 2026

09:52
Visualizing Neuroblast Cytokinesis During C. elegans Embryogenesis
Published on: March 13, 2014
12.5K
一种镜子对称的细胞分裂,可以调节神经上皮质形态发生
Marcel Tawk1, Claudio Araya, Dave A Lyons
1Anatomy and Developmental Biology, UCL, Gower Street, London WC1E 6BT, UK.
Nature
|March 30, 2007
概括
科学家在斑马鱼胚胎中发现了一种新型的细胞分裂. 神经前的这种镜面对称的细胞分裂组织了胚胎组织的发育和模式形成.
科学领域:
- 发育生物学是发展生物学.
- 细胞生物学 细胞生物学
- 神经科学是一个神经科学.
背景情况:
- 细胞极性对于胚胎的组织发育和形态发生至关重要.
- 定向细胞分裂显著影响组织形态发生,特别是在上皮组织.
研究的目的:
- 确定和描述斑马鱼发育中的神经管中极化细胞分裂的新型模式.
- 研究这种细胞分裂对胚胎组织组织和模式形成的影响.
主要方法:
- 观察斑马鱼胚胎发育中的细胞分裂.
- 在神经祖先中追踪极性蛋白Pard3的遗传.
- 在神经发育过程中诱导子宫外细胞分裂,以评估形态遗传的影响.
主要成果:
- 发现了一种新的两极分化的细胞分裂模式,产生了镜子对称的神经原始体.
- 极性蛋白Pard3在神经管发育过程中以镜面对称的方式被子细胞遗传.
- 宫外镜像对称的划分诱导了镜像模式的形成和宫外神经管的产生.
结论:
- 镜形对称的细胞分裂是组织神经前和胚胎组织的关键机制.
- 帕德3遗传驱动子细胞集成到神经管的相反侧面.
- 这种分裂模式具有显著的形态遗传能力,能够编排复杂的模式形成.
相关概念视频
Neurulation
47.6K
Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the...
47.6K
Determining the Plane of Cell Division
4.1K
Positioning the cell division plane is a critical step during development and cell differentiation, particularly during mitosis when the plane is essential for determining the size of the two daughter cells. The cell division plane is perpendicular to the plane of chromosome segregation, but different types of organisms have different cell division mechanisms to suit their morphology and function.
Animal cells
In animal cells, the cleavage furrow forms along the plane of cell division...
Animal cells
In animal cells, the cleavage furrow forms along the plane of cell division...
4.1K
Cell Motility through Blebbing
2.7K
Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
Blebbing Through the Matrix
In multicellular...
2.7K

