ParkinsonFranceV1, Main, Exploration, bibRecord, 000042

Copper brain protein protection against free radical-induced neuronal death: Survival ratio in SH-SY5Y neuroblastoma cell cultures.

Identifieur interne : 000042 ( Main/Exploration ); précédent : 000041; suivant : 000043

Copper brain protein protection against free radical-induced neuronal death: Survival ratio in SH-SY5Y neuroblastoma cell cultures.

Auteurs : Roger Deloncle [France] ; Bernard Fauconneau [France] ; Olivier Guillard [France] ; José Delaval [France] ; Gérard Lesage [France] ; Alain Pineau [France]

Source :

Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) [ 1878-3252 ] ; 2017.

RBID : pubmed:27908423

Abstract

In Creutzfeldt Jakob, Alzheimer and Parkinson diseases, copper metalloproteins such as prion, amyloid protein precursor and α-synuclein are able to protect against free radicals by reduction from cupric Cu(+2) to cupreous Cu(+). In these pathologies, a regional copper (Cu) brain decrease correlated with an iron, zinc or manganese (Mn) increase has previously been observed, leading to local neuronal death and abnormal deposition of these metalloproteins in β-sheet structures. In this study we demonstrate the protective effect of Cu metalloproteins against deleterious free-radical effects. With neuroblastoma SH-SY5Y cell cultures, we show that bovine brain prion protein in Cu but not Mn form prevents free radical-induced neuronal death. The survival ratio of SH-SY5Y cells has been measured after UV irradiation (free radical production), when the incubating medium is supplemented with bovine brain homogenate in native, Cu or Mn forms. This ratio, about 28% without any addition or with bovine brain protein added in Mn form, increases by as much as 54.73% with addition to the culture medium of native bovine brain protein and by as much as 95.95% if the addition is carried out in cupric form. This protective effect of brain copper protein against free radical-induced neuronal death has been confirmed with Inductively Coupled Plasma Mass Spectrometry Mn and Cu measurement in bovine brain homogenates: respectively lower than detection limit and 9.01μg/g dry weight for native form; lower than detection limit and 825.85μg/g dry weight for Cu-supplemented form and 1.75 and 68.1μg/g dry weight in Mn-supplemented brain homogenate.

DOI: 10.1016/j.jtemb.2016.07.006
PubMed: 27908423

Affiliations:

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La maladie de Parkinson en France (serveur d'exploration)

Copper brain protein protection against free radical-induced neuronal death: Survival ratio in SH-SY5Y neuroblastoma cell cultures.

Copper brain protein protection against free radical-induced neuronal death: Survival ratio in SH-SY5Y neuroblastoma cell cultures.

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Abstract

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