Planar cell movements and oriented cell division during early primitive streak formation in the mammalian embryo
نویسندگان
چکیده
منابع مشابه
Rho kinase activity controls directional cell movements during primitive streak formation in the rabbit embryo
During animal gastrulation, the specification of the embryonic axes is accompanied by epithelio-mesenchymal transition (EMT), the first major change in cell shape after fertilization. EMT takes place in disparate topographical arrangements, such as the circular blastopore of amphibians, the straight primitive streak of birds and mammals or in intermediate gastrulation forms of other amniotes su...
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Cell movements are a fundamental feature during the development of multi-cellular organisms. In amniote gastrulation, cells ingress through the primitive streak, which identifies the anterior-posterior axis of the embryo. We investigated the cytoskeletal architecture during these morphogenetic processes and characterized microtubule organisation in whole chick embryos. This revealed the distrib...
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We have investigated the patterns of tissue flow underlying the formation of the primitive streak in the chick embryo. Analysis of time-lapse sequences of brightfield images to extract the tissue velocity field and of fluorescence images of small groups of DiI-labelled cells have shown that epiblast cells move in two large-scale counter-rotating streams, which merge at the site of streak format...
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ژورنال
عنوان ژورنال: Developmental Dynamics
سال: 2011
ISSN: 1058-8388
DOI: 10.1002/dvdy.22687