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- W2020553654 abstract "Recent evidence suggests that DNA double strand breaks (DSBs) are introduced in neurons during the course of normal development, and that repair of such DSBs is essential for neuronal survival. Here we describe a non-homologous DNA end joining (NHEJ) system in the adult rat brain that may be used to repair DNA DSBs. In the brain NHEJ system, blunt DNA ends are joined with lower efficiency than cohesive or non-matching protruding ends. Moreover, brain NHEJ is blocked by DNA ligase inhibitors or by dATP and can occur in the presence or absence of exogenously added ATP. Comparison of NHEJ activities in several tissues showed that brain and testis share similar mechanisms for DNA end joining, whereas the activity in thymus seems to utilize different mechanisms than in the nervous system. The developmental profile of brain NHEJ showed increasing levels of activity after birth, peaking at postnatal day 12 and then gradually decreasing along with age. Brain distribution analysis in adult animals showed that NHEJ activity is differentially distributed among different regions. We suggest that the DNA NHEJ system may be utilized in the postnatal brain for the repair of DNA double strand breaks introduced within the genome in the postnatal brain." @default.
- W2020553654 created "2016-06-24" @default.
- W2020553654 creator A5045652155 @default.
- W2020553654 creator A5065010513 @default.
- W2020553654 date "2002-03-06" @default.
- W2020553654 modified "2023-10-18" @default.
- W2020553654 title "Non-homologous DNA end joining in the mature rat brain" @default.
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- W2020553654 doi "https://doi.org/10.1046/j.0022-3042.2002.00776.x" @default.
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