Mitotic activation: a convergent mechanism for a cohort of neurodegenerative diseases
Identifieur interne : 001C04 ( Main/Exploration ); précédent : 001C03; suivant : 001C05Mitotic activation: a convergent mechanism for a cohort of neurodegenerative diseases
Auteurs : J. W. Husseman [États-Unis] ; D. Nochlin [États-Unis] ; I. Vincent [États-Unis]Source :
- Neurobiology of Aging [ 0197-4580 ] ; 2000.
English descriptors
- KwdEn :
- Alzheimer’s disease, Cell cycle, Corticobasal degeneration, Cyclin B1, Frontotemporal dementia, H5, MPM-2, Mitosis, Neurodegeneration, Neurofibrillary tangles, Neuronal death, Niemann Pick disease type C, Parkinson-amyotrophic lateral sclerosis of Guam, Pick’s disease, Progressive supranuclear palsy, TG-3, cdc2.
Abstract
Previous evidence from our lab and others has implicated the mitotic cdc2/cyclin B1 kinase in the neurofibrillary degeneration of Alzheimer’s disease. To examine the specificity of this relationship, and define conditions leading to atypical activation of mitotic kinase in postmitotic neurons, we have applied antibodies specific for the cdc2 kinase, its activator, cyclin B1, and three cdc2 produced phosphoepitopes: the TG-3 phosphoepitope in tau and nucleolin, the MPM-2 phosphoepitope in a variety of substrates, and the H5 phosphoepitope in RNA polymerase II, to affected brain regions from a spectrum of neurodegenerative disorders. Our results demonstrate that neurons containing characteristic lesions in a subset of diseases including Down Syndrome (DS), Frontotemporal Dementia linked to chromosome 17 (FTD-17), Progressive Supranuclear Palsy (PSP), Corticobasal Degeneration (CBD), Parkinson-Amyotrophic Lateral Sclerosis of Guam (GP-ALS), Niemann Pick disease type C (NPDC), and Pick’s disease, display mitotic indices, implicating diverse etiologies in mitotic activation. The convergence of various degenerative schemes into a unified mitotic kinase-driven pathway provides a common target for therapeutic treatment of these different disorders.
Url:
DOI: 10.1016/S0197-4580(00)00221-9
Affiliations:
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To examine the specificity of this relationship, and define conditions leading to atypical activation of mitotic kinase in postmitotic neurons, we have applied antibodies specific for the cdc2 kinase, its activator, cyclin B1, and three cdc2 produced phosphoepitopes: the TG-3 phosphoepitope in tau and nucleolin, the MPM-2 phosphoepitope in a variety of substrates, and the H5 phosphoepitope in RNA polymerase II, to affected brain regions from a spectrum of neurodegenerative disorders. Our results demonstrate that neurons containing characteristic lesions in a subset of diseases including Down Syndrome (DS), Frontotemporal Dementia linked to chromosome 17 (FTD-17), Progressive Supranuclear Palsy (PSP), Corticobasal Degeneration (CBD), Parkinson-Amyotrophic Lateral Sclerosis of Guam (GP-ALS), Niemann Pick disease type C (NPDC), and Pick’s disease, display mitotic indices, implicating diverse etiologies in mitotic activation. 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