Journal
CELL CYCLE
Volume 4, Issue 12, Pages 1758-1760Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/cc.4.12.2153
Keywords
aneuploidy; neurons; Alzheimer's disease; stem cells; progenitor cells; fluorescence in situ hybridization
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Funding
- Intramural NIH HHS Funding Source: Medline
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Neurons, once committed, exit the cell cycle and undergo maturation that promote specialized activity and are believed to operate upon a stable genome. We used fluorescence in situ hybridization, selective cell microdissection, and loss of heterozygosity analysis to assess degree of aneuploidy in patients with a neurodegenerative disease and in normal controls. We found that aneuploidy occurs in approximately 40% of mature, adult human neurons in health or disease and may be a physiological mechanism that maintains neuronal fate and function; it does not appear to be an unstable state. The fact that neuronal stem cells can be identified in adult humans and that somatic mosaicism may be found in neuronal precursor cells deserves further investigation before using adult neural stem cells to treat human disease.
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