6533b7d3fe1ef96bd1261430
RESEARCH PRODUCT
Mitochondrial compartment: a possible target of cadmium effects on breast epithelial cells.
Giuseppe CanninoAnna Maria RinaldiElisa FerruggiaClaudio Luparellosubject
Clinical chemistryCadmium - Mitochondria - Stress - Breast EpithelialClinical BiochemistryCell RespirationMitochondrionBiologyCell LineElectron Transport Complex IVHeat shock proteinmedicineHumansHSP70 Heat-Shock ProteinsBreastCytotoxicityMolecular BiologyMembrane Potential MitochondrialMessenger RNAMembranesDose-Response Relationship DrugEpithelial CellsCell BiologyGeneral MedicineChaperonin 60EpitheliumCell biologyHsp70Mitochondriamedicine.anatomical_structureGene Expression RegulationHSP60FemaleCadmiumdescription
Cadmium–breast epithelial cell interactions were studied by analyzing some mitochondria-related aspects of stress response. We treated immortalized non-tumor breast cells with 5 or 50 μM CdCl2 for 24 or 96 h demonstrating that the exposure did not cause a significant mitochondrial proliferation, while it induced a significant increase in the respiratory activity and mitochondrial polarization. In addition, we found that hsp60 was up-regulated while hsp70 and COXII and COXIV were down-regulated. The mRNA for hsp70 remained constant and only the inducible form of the 70-kDa heat shock protein was over expressed. The mRNAs for COXII and COXIV remained constant after 24 h and increased after longer incubations while the respective proteins decreased. These findings provide additional information on the cellular and molecular aspects of the interaction between Cd and epithelial cells, and on alterations of mitochondria as early events in Cd cytotoxicity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-01-09 |