Search results for " DECILIATION"

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Hsp40 Is Involved in Cilia Regeneration in Sea Urchin Embryos

2003

In a previous paper we demonstrated that, in Paracentrotus lividus embryos, deciliation represents a specific kind of stress that induces an increase in the levels of an acidic protein of about 40 kD (p40). Here we report that deciliation also induces an increase in Hsp40 chaperone levels and enhancement of its ectodermal localization. We suggest that Hsp40 might play a chaperoning role in cilia regeneration.

0301 basic medicineEmbryo NonmammalianHistologyParacentrotus lividus03 medical and health sciences0302 clinical medicineStress PhysiologicalCulture Techniquesbiology.animalEctodermBotanyAnimalsRegenerationElectrophoresis Gel Two-DimensionalCiliaSettore BIO/06 - Anatomia Comparata E CitologiaSea urchinHeat-Shock ProteinsCentrosomebiologyCiliumEmbryoHSP40 Heat-Shock ProteinsSea urchin embryobiology.organism_classificationHsp40 deciliation sea urchinCell biology030104 developmental biologySea UrchinsAnatomy030217 neurology & neurosurgeryMolecular Chaperones
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Sea urchin deciliation induces thermoresistance and activates the p38 mitogen-activated protein kinase pathway.

2003

In this study, we demonstrate by a variety of approaches (ie, morphological analysis, Western blots, immunolocalization, and the use of specific antibodies) that hyperosmotic deciliation stress of sea urchin embryos induces a thermotolerant response. Deciliation is also able to activate a phosphorylation signaling cascade the effector of which might be the p38 stress-activated protein kinase because we found that the administration of the p38 inhibitor SB203580 to sea urchin deciliated gastrula embryos makes the hyperosmotic deciliation stress lethal.

animal structuresHot TemperaturePyridinesp38 mitogen-activated protein kinasesSEA URCHIN DECILIATION p38MAP KINASEBiochemistryp38 Mitogen-Activated Protein KinasesEnzyme activatorStress Physiologicalbiology.animalAnimalsCiliaSettore BIO/06 - Anatomia Comparata E CitologiaPhosphorylationProtein kinase ASea urchinbiologyEffectorImidazolesAntibodies MonoclonalCell BiologyGastrulaOriginal ArticlesMolecular biologyBlotEnzyme ActivationSea Urchinsembryonic structuresPhosphorylationElectrophoresis Polyacrylamide GelSignal transductionMitogen-Activated Protein KinasesSignal TransductionCell stresschaperones
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