Decreased proteasome activity is an important pathology in Parkinson's disease (PD), which is related to cell death and Lewy body formation. In this study, we show that p53-activity may correlate with neuronal death via the mitochondrial pathway in PD model. The proteasome inhibitor, MG132, induced the accumulation of p53 in human dopaminergic neuroblastoma SH-SY5Y cells. The increased stabilization of p53 upregulated the level of Bax and mitochondrial depolarization. These events were inhibited by the p53 inhibitor, pifithrin-alpha (PFT). Cell viability analyzes demonstrated that PFT partially prevented MG132-induced cell death. These results suggest that p53 is a candidate as an intermediary between the proteasome system and mitochondria-related neuronal death in PD. (C) 2003 Elsevier Ireland Ltd. All rights reserved.
机构:
Guys Kings & St Thomas Sch Biomed Sci, Div Pharmacol & Therapeut, Neurodegenerat Dis Res Ctr, London SE1 1UL, EnglandGuys Kings & St Thomas Sch Biomed Sci, Div Pharmacol & Therapeut, Neurodegenerat Dis Res Ctr, London SE1 1UL, England
McNaught, KSP
;
Jenner, P
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机构:
Guys Kings & St Thomas Sch Biomed Sci, Div Pharmacol & Therapeut, Neurodegenerat Dis Res Ctr, London SE1 1UL, EnglandGuys Kings & St Thomas Sch Biomed Sci, Div Pharmacol & Therapeut, Neurodegenerat Dis Res Ctr, London SE1 1UL, England
机构:
Guys Kings & St Thomas Sch Biomed Sci, Div Pharmacol & Therapeut, Neurodegenerat Dis Res Ctr, London SE1 1UL, EnglandGuys Kings & St Thomas Sch Biomed Sci, Div Pharmacol & Therapeut, Neurodegenerat Dis Res Ctr, London SE1 1UL, England
McNaught, KSP
;
Jenner, P
论文数: 0引用数: 0
h-index: 0
机构:
Guys Kings & St Thomas Sch Biomed Sci, Div Pharmacol & Therapeut, Neurodegenerat Dis Res Ctr, London SE1 1UL, EnglandGuys Kings & St Thomas Sch Biomed Sci, Div Pharmacol & Therapeut, Neurodegenerat Dis Res Ctr, London SE1 1UL, England