6533b838fe1ef96bd12a48e6
RESEARCH PRODUCT
Bruce/apollon promotes hippocampal neuron survival and is downregulated by kainic acid
Johanna AaltonenDan LindholmAnna-leena SokkaLaura KorhonenNatale BelluardoG Mudòsubject
MaleKainic acidCell SurvivalBiophysicsExcitotoxicityBruce/apollon Hippocampus Kainic acid Excitotoxicity Neuronal death Caspase-3 Cytochrome cDown-RegulationHippocampusStimulationBiologyHippocampal formationmedicine.disease_causeHippocampusBiochemistrychemistry.chemical_compoundDownregulation and upregulationmedicineAnimalsRats WistarMolecular BiologyCells CulturedNeuronsKainic AcidDose-Response Relationship DrugNeurodegenerationGlutamate receptorCell Biologymedicine.diseaseRatsCell biologynervous systemchemistryBiochemistryUbiquitin-Conjugating Enzymeshuman activitiescirculatory and respiratory physiologydescription
Prolonged or excess stimulation of excitatory amino acid receptors leads to seizures and the induction of excitotoxic nerve cell injury. Kainic acid acting on glutamate receptors produces degeneration of vulnerable neurons in parts of the hippocampus and amygdala, but the exact mechanisms are not fully understood. We have here investigated whether the anti-apoptotic protein Bruce is involved in kainic acid-induced neurodegeneration. In the rat hippocampus and cortex, Bruce was exclusively expressed by neurons. The levels of Bruce were rapidly downregulated by kainic acid in hippocampal neurons as shown both in vivo and in cell culture. Caspase-3 was activated in neurons exhibiting low levels of Bruce causing cell death. Likewise, downregulation of Bruce using antisense oligonucleotides decreased viability and enhanced the effect of kainic acid in the hippocampal neurons. The results show that Bruce is involved in neurodegeneration caused by kainic acid and the downregulation of the protein promotes neuronal death.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-12-01 |