相关实验视频
Updated: Jul 1, 2025

09:52
Visualizing Neuroblast Cytokinesis During C. elegans Embryogenesis
Published on: March 12, 2014
11.9K
高度保存和极其可进化的:BMP信号在二次轴模式的Cnidaria和双
David Mörsdorf1, Paul Knabl1,2, Grigory Genikhovich3
1Dept. Neurosciences and Developmental Biology, University of Vienna, UBB, Djerassiplatz 1, 1030, Vienna, Austria.
Development genes and evolution
|March 13, 2024
概括
骨形态遗传蛋白 (BMP) 信号模式在双胞胎中指导背腹轴. 本综述强调了动物之间多样化的BMP信号机制,揭示了不同物种中显著的进化性,甚至是核心组件的丧失.
科学领域:
- 发育生物学 发展生物学
- 进化生物学 进化生物学
- 动物生理学 动物生理学
背景情况:
- 双胞胎,包括大多数动物类,表现出双边对称性,有明显的前后和背内轴.
- 骨形态遗传蛋白 (BMP) 信号传递对于在动物中建立背腹 (DV) 轴至关重要.
- 在Drosophila和Xenopus等模型生物中进行的初步研究表明,BMP在DV模式中保留了信号作用.
研究的目的:
- 审查和强调BMP信号的多样化机制,以控制各种动物物种之间的双边性.
- 探索BMP依赖的轴向模式的可变性,包括其核心组件.
- 讨论Bilateria以外的物种的发现,扩大BMP信号作用的范围.
主要方法:
- 文献综述综合了来自各种模型生物和物种的发现.
- 对BMP信号通路及其在轴向模式中的功能作用进行比较分析.
- 遗传学采样以了解BMP信号的进化趋势和变化.
主要成果:
- 在不同双边物种中,BMP信号表现出 DV 模式的潜在机制的相当多样性.
- 取决于BMP的轴向模式系统具有高度可变性,核心组件可以以不同的方式部署或丢失.
- 即使在远距离相关的物种中也观察到BMP信号机制的变异,并延伸到一些非双边动物.
结论:
- 在建立双边关系方面,BMP信号的作用比以前认为的更加多样化和可变.
- 要了解BMP依赖的轴向模式可变性的极限,需要进一步研究,结合功能分析和建模.
- 跨越更广泛的遗传学范围进行比较研究对于全面了解BMP信号演变至关重要.
更多相关视频
相关概念视频
Microtubules in Signaling
1.7K
The primary cilium, made up of microtubules, acts as antennae on the cell surfaces for relaying external stimuli into the cells. These fine hair-like structures are present, generally one per cell. These are non-motile cilia in a 9+0 microtubules arrangement, where the central pair of microtubules are absent. The primary cilia arise from the basal body embedded in the cell membrane. Intraflagellar transport (IFT) carries requisite proteins from the cytoplasm to the cilium because the primary...
1.7K
Non-Canonical Wnt Signaling Pathways
7.3K
Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
7.3K
Neurulation
41.9K
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...
41.9K
Notch Signaling Pathway
4.3K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
4.3K
Cytoskeletal Coordination in Cell Migration
4.8K
A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
4.8K
Cell Motility through Blebbing
1.9K
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...
1.9K

