Ventral tail bud mesenchyme is a signaling center for tail paraxial mesoderm induction
نویسندگان
چکیده
منابع مشابه
no tail integrates two modes of mesoderm induction.
During early zebrafish development the nodal signalling pathway patterns the embryo into three germ layers, in part by inducing the expression of no tail (ntl), which is essential for correct mesoderm formation. When nodal signalling is inhibited ntl fails to be expressed in the dorsal margin, but ventral ntl expression is unaffected. These observations indicate that ntl transcription is under ...
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Using lectin histochemistry, we have previously shown that there are alterations in the distribution of glycoconjugates in the tail bud of chick embryos that parallel the developmental sequence of the caudal axis. If glycoconjugates or the cells bearing them play a role in caudal axial development, then, restriction of their availability by binding with lectins would be expected to produce abno...
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BACKGROUND Although as humans we lose our tails in the second month of embryonic development, a persistent tail is a prominent structural feature of most adult vertebrates. Indeed, the post-anal tail is part of the definition of a chordate. The internal organization of the developing tail--with neural tube, notochord and paired somites--is the same as that of the main body axis, so it can be ex...
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We have developed a new assay to identify factors promoting formation and outgrowth of the tail bud. A piece of animal cap filled with the test mRNAs is grafted into the posterior region of the neural plate of a host embryo. With this assay we show that expression of a constitutively active Notch (Notch ICD) in the posterior neural plate is sufficient to produce an ectopic tail consisting of ne...
متن کامل03-P017 Common progenitors for neurectoderm and mesoderm are present from gastrulation to tail bud stage in mouse
Here we show that Ephrin–Eph signaling regulates Xenopus gastrulation via mediating tissue separation. XEph receptor is exclusively expressed in the involuting mesoderm, whereas XEphrin ligand is localized in the ectoderm region during Xenopus gastrulaiton. At the beginning of gastrulation, XEph expressing mesoderm is around blastopore lip, and XEphrin ligand expressing ecotoderm is placed righ...
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ژورنال
عنوان ژورنال: Developmental Dynamics
سال: 2004
ISSN: 1058-8388,1097-0177
DOI: 10.1002/dvdy.20017