期刊
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
卷 107, 期 -, 页码 147-160出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.semcdb.2020.07.010
关键词
Boundary formation; Boundary maintenance; Segmentation; Germband extension; Convergence and extension; Extended germband; Wingless signalling; Wnt signalling; Cell affinities; Differential adhesion hypothesis; Differential interfacial tension hypothesis
资金
- BBSRC-DTP studentship [BB/M011194/1]
- Wellcome Trust Investigator Award [207553/Z/17/Z]
- Wellcome Trust [207553/Z/17/Z] Funding Source: Wellcome Trust
The regionalisation of growing tissues into compartments that do not mix is thought to be a common motif of animal development. Compartments and compartmental boundaries were discovered by lineage studies in the model organism Drosophila. Since then, many compartment boundaries have been identified in developing tissues, from insects to vertebrates. These are important for animal development, because boundaries localize signalling centres that control tissue morphogenesis. Compartment boundaries are boundaries of lineage restriction, where specific mechanisms keep boundaries straight and cells segregated. Here, we review the mechanisms of cell sorting at boundaries found in early Drosophila embryos. The parasegmental boundaries, separating anterior from posterior compartments in the embryo, keep cells segregated by increasing actomyosin contractility at boundary cell-cell interfaces. Differential actomyosin contractility in turn promotes fold formation and orients cell division. Earlier in development, actomyosin differentials are also important for cell sorting during axis extension. Specific cell surface asymmetries and signalling pathways are required to initiate and maintain these actomyosin differentials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据