Journal
BIOESSAYS
Volume 25, Issue 2, Pages 168-173Publisher
COMPANY OF BIOLOGISTS LTD
DOI: 10.1002/bies.10227
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Taking advantage of the fact that they need not replicate their DNA, terminally differentiated neurons only repair their expressed genes and largely dispense with the burden of removing damage from most of their genome. However, they may pay a heavy price for this laxity if unforeseen circumstances, such as a pathological condition like Alzheimer's disease, cause them to re-enter the cell cycle. The lifetime accumulation of unrepaired lesions in the silent genes of neurons is likely to be significant and may result in aborting the mitotic process and triggering cell death if the cells attempt to express these dormant genes and resume DNA replication. (C) 2003 Wiley Periodicals, Inc.
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