Mesomere-derived glutamate decarboxylase-expressing blastocoelar mesenchyme cells of sea urchin larvae
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چکیده
منابع مشابه
The 5-HT receptor cell is a new member of secondary mesenchyme cell descendants and forms a major blastocoelar network in sea urchin larvae
A gene encoding the serotonin (5-hydroxytryptamine, 5-HT) receptor (5-HT-hpr) was identified from the sea urchin, Hemicentrotus pulcherrimus. Partial amino acid sequence deduced from the cDNA showed strong similarity to Aplysia californica 5-HT2 receptor. Immunoblotting analysis of this 5-HT-hpr protein (5-HT-hpr) with an antibody raised against a deduced peptide showed two bands. Their relativ...
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At gastrulation the primary mesenchyme cells of sea urchin embryos lose contact with the extracellular hyaline layer and with neighboring blastomeres as they pass through the basal lamina and enter the blastocoel. This delamination process was examined using a cell-binding assay to follow changes in affinities between mesenchyme cells and their three substrates: hyalin, early gastrula cells, an...
متن کاملThe role of secondary mesenchyme cells during sea urchin gastrulation studied by laser ablation.
It has long been thought that traction exerted by filopodia of secondary mesenchyme cells (SMCs) is a sufficient mechanism to account for elongation of the archenteron during sea urchin gastrulation. The filopodial traction hypothesis has been directly tested here by laser ablation of SMCs in gastrulae of the sea urchin, Lytechinus pictus. When SMCs are ablated at the onset of secondary invagin...
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The primary mesenchyme cells (PMCs) of the sea urchin embryo have been an important model system for the analysis of cell behavior during gastrulation. To gain an improved understanding of the molecular basis of PMC behavior, a set of 8293 expressed sequenced tags (ESTs) was derived from an enriched population of mid-gastrula stage PMCs. These ESTs represented approximately 1200 distinct protei...
متن کاملMesodermal cell interactions in the sea urchin embryo: properties of skeletogenic secondary mesenchyme cells.
An interaction between the two principal populations of mesodermal cells in the sea urchin embryo, primary and secondary mesenchyme cells (PMCs and SMCs, respectively), regulates SMC fates and the process of skeletogenesis. In the undisturbed embryo, skeletal elements are produced exclusively by PMCs. Certain SMCs also have the ability to express a skeletogenic phenotype; however, signals trans...
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ژورنال
عنوان ژورنال: Biology Open
سال: 2013
ISSN: 2046-6390
DOI: 10.1242/bio.20136882