RGD Reference Report - Copper deficiency induces the upregulation of the copper chaperone for Cu/Zn superoxide dismutase in weanling male rats. - Rat Genome Database

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Copper deficiency induces the upregulation of the copper chaperone for Cu/Zn superoxide dismutase in weanling male rats.

Authors: Bertinato, J  Iskandar, M  L'Abbe, MR 
Citation: Bertinato J, etal., J Nutr 2003 Jan;133(1):28-31.
RGD ID: 634854
Pubmed: PMID:12514262   (View Abstract at PubMed)

The most commonly used indices for determining copper deficiency in humans are reduced serum/plasma copper concentration and decreased activity of ceruloplasmin and Cu/Zn superoxide dismutase (SOD1). However, these indicators are influenced by many factors unrelated to copper status and lack the sensitivity required to detect marginal deficiency, limiting their usefulness in many situations. In vivo, the insertion of copper into SOD1 is dependent on the copper chaperone for SOD1 (CCS). In this study, we explored the possibility that the expression level of CCS may reflect copper status and thus serve as a useful marker of copper nutriture. Weanling male Wistar rats were fed either a normal (5.3 mg Cu/kg diet), moderately deficient (0.84 mg Cu/kg diet) or deficient (0.34 mg Cu/kg diet) copper diet for 6 wk. Rats fed moderate and deficient diets showed differences (P < 0.05) in several hematological measurements, indicating varying degrees of copper deficiency in these groups. Copper-deficient rats had reduced (P < 0.05) liver and erythrocyte SOD1 activity and body weight. Western blot analysis revealed a dose-dependent increase (P < 0.05) in CCS expression in liver and erythrocytes of copper-deficient rats. We report CCS protein level as a novel marker for assessing copper status.



Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Sod1Rathydrogen peroxide biosynthetic process  IDA  RGD 
Sod1Ratremoval of superoxide radicals  IDA  RGD 
Sod1Ratresponse to copper ion  IEP  RGD 
Sod1Ratsuperoxide metabolic process  IDA  RGD 

Molecular Function

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Sod1Ratcopper ion binding  IMP  RGD 
Sod1Ratsuperoxide dismutase activity  IDA  RGD 
CcsRatsuperoxide dismutase copper chaperone activity  TAS  RGD 

Objects Annotated

Genes (Rattus norvegicus)
Ccs  (copper chaperone for superoxide dismutase)
Sod1  (superoxide dismutase 1)


Additional Information