6533b827fe1ef96bd1287250
RESEARCH PRODUCT
EGTA treatment causes the synthesis of heat shock proteins in sea urchin embryos.
Cinzia TipaCaterina CasanoMaria Carmela RoccheriKaroly Onoratosubject
Embryo NonmammalianbiologyEthylenediaminetetraacetic acidbiology.organism_classificationParacentrotus lividuschemistry.chemical_compoundEGTAchemistryBiochemistrybiology.animalHeat shock proteinSea UrchinsProtein biosynthesisBiophysicsAnimalsChelationElectrophoresis Gel Two-DimensionalMolecular BiologySea urchinIncubationEgtazic AcidEdetic AcidHeat-Shock ProteinsChelating Agentsdescription
Paracentrotus lividus embryos, at post-blastular stage, when subjected to a rise in temperature from physiologic (20 degrees C) to 31 degrees C, synthesize a large group of heat shock proteins (hsps), and show a severe inhibition of bulk protein synthesis. We show, by mono- and two-dimensional electrophoresis, that also EGTA (ethylene glycol-bis[beta-aminoethyl ether] tetraacetic acid) treatment induces in sea urchin embryos both marked inhibition of bulk protein synthesis and the synthesis of the entire set of hsps. Furthermore, EGTA-treated sea urchin embryos are able to survive at a temperature otherwise lethal (35 degrees C) becoming thermotolerant. Because incubation with a different calcium-chelator, EDTA (ethylenediaminetetraacetic acid), or in calcium-free medium did not induce hsps synthesis we conclude that the stress response caused by EGTA is not related to its calcium chelator function.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-05-01 | Molecular cell biology research communications : MCBRC |