The animal-vegetal axis of the oocyte of Xenopus laevis is recognizable not only by the pattern of surface pigmentation, but also by the distribution of yolk platelets, with the largest platelets (14 渭m in diameter) and 70% of the total yolk protein localized in the vegetal hemisphere. We...
One of the central and conserved molecular signaling pathways involved in regulating both axis formation and germ-layer segregation in bilaterians is the Wnt/β-catenin, or canonical Wnt, signaling pathway. In several deuterostome embryos, egg polarity is translated into the axial polarity of the ...
The border of this domain, which is orthogonal to the primordial animal-vegetal axis, is shifted towards the animal pole in Li+-treated embryos. Exogenous micromeres implanted at the animal...关键词: Body Patterning Ca2+ Calmodulin Dependent Protein Kinase metabolism Protein-Serine-Threonine Kinases...
专业医学词典 动、植物极 与"animal-vegetal"相近的词条 ...
The animal-vegetal (A-V) axis is already set in unfertilized eggs. It plays crucial roles in coordinating germ-layer formation. However, how the A-V axis i... H Nishida,M Tokuhisa,M Muto - 《Mechanisms of Development》 被引量: 0发表: 2017年 Dual mechanism controls asymmetric spindle ...
Furthermore, we consider in detail only the first steps in the specification of major regions of the embryo--PMCs, SMCs, endoderm, and ectoderm--whose anlage are arranged in that order along the axis from vegetal to animal. We begin with the VSM that is required to specify mesoderm and ...
animal-vegetal axisastacinblastulaembryonic axishatching enzymein situ hybridizationmicromeressea urchinzygotic gene expressionWe have analyzed a gene, designated VEB4 , that is expressed transiently in very early blastulae of the sea urchin, Strongylocentrotus purpuratus . Sequence analysis of the ...
Symmetry-breaking events triggered by the fertilizing sperm remodel this primary animal–vegetal (a–v) axis to establish the embryonic (D–V, A–P) axes. To understand how this radial a–v polarity of eggs is established, we have analyzed the distribution of mitochondria, mRNAs, microtubules ...
Based on our analysis of bucky ball mutants, we postulate that Bucky ball regulates animal–vegetal polarity and directs mRNA localization along the animal–vegetal oocyte axis in zebrafish, in part through mediating Balbiani body formation. The Balbiani body has been postulated to select the ...
Asymmetric developmental potential along the animal-vegetal axis in the anthozoan cnidarian, Nematostella vectensis, is mediated by Dishevelled. The relationship between egg polarity and the adult body plan is well understood in many bilaterians . However, the evolutionary origins of embryonic polar......