Repairing DNA damages in neurodegenerative diseases

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Parkin gene mutant failed to ubiquitinate cyclin E, leading to cell cycle deregulation. We has uncovered the nuclear pathway by which the Parkin mutant ubiqutinates cyclin E and may thus control the cell cycle, contributing to cell survival. Our observations may provide a molecular basis for the development of an antisense-mediated therapeutic procedure that would be specific, rational, and genetically based. In spinocerebellar ataxia (SCA14), causative gene mutant ProteinkinaseCγcaused to inhibit the nuclear entry of recessive-ataxia-related aprataxin. Decreased nuclear aprataxin increased oxidative stress-induced DNA damage and cell death.