Use of specific glycosidases to probe cellular interactions in the sea urchin embryo
| Autor: | Stan Metzenberg, Edward J. Carroll, Steven B. Oppenheimer, Virginia Hutchins-Carroll, Haike Ghazarian, Brian Idoni |
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| Rok vydání: | 2010 |
| Předmět: |
Cell signaling
Glycan Protease Embryo Nonmammalian biology Glycoside Hydrolases medicine.medical_treatment Embryo Cell Biology Cell Communication Article Gastrulation Biochemistry Polysaccharides biology.animal Sea Urchins embryonic structures medicine biology.protein Cell Adhesion Animals alpha-Amylases Archenteron Polyacrylamide gel electrophoresis Sea urchin |
| Zdroj: | Experimental cell research. 316(13) |
| ISSN: | 1090-2422 |
| Popis: | We present an unusual and novel model for initial investigations of a putative role for specifically conformed glycans in cellular interactions. We have used alpha- and ss-amylase and alpha- and ss-glucosidase in dose-response experiments evaluating their effects on archenteron organization using the NIH designated sea urchin embryo model. In quantitative dose-response experiments, we show that defined activity levels of alpha-glucosidase and ss-amylase inhibited archenteron organization in living Lytechinus pictus gastrula embryos, whereas all concentrations of ss-glucosidase and alpha-amylase were without substantial effects on development. Product inhibition studies suggested that the enzymes were acting by their specific glycosidase activities and polyacrylamide gel electrophoresis suggested that there was no detectable protease contamination in the active enzyme samples. The results provide evidence for a role of glycans in sea urchin embryo cellular interactions with special reference to the possible structural conformation of these glycans based on the differential activities of the alpha- and ss-glycosidases. |
| Databáze: | OpenAIRE |
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