Abstract
Mammalian DNA topoisomerase IIbeta; is a type II DNA topoisomerase that catalyses topological transformations of genomic DNA by the transport of one DNA double helix through another. The IIβ enzyme is highly expressed in cells that have undergone the final cell division and committed to differentiate into neuronal cells. The IIβ enzyme in the differentiating neuronal cells is located in the nucleoplasm and is actively engaged in its catalytic reaction in vivo. When enzyme action is interfered with a specific inhibitor in vitro, transcriptional induction of a subset of genes fails to occur during neuronal differentiation. Detailed analyses of developing rat cerebellum and the cerebrum of mice with disrupted IIβ genes have revealed that DNA topoisomerase IIβ is necessary for the developmentally regulated expression of certain genes in cells committed to a neuronal fate after the final division. Herein, we review a dynamic aspect of DNA topoisomerase IIβ in the brain with special emphasis on developing cerebellar neurons.
| Original language | English |
|---|---|
| Pages (from-to) | 156-163 |
| Number of pages | 8 |
| Journal | Anatomical Science International |
| Volume | 81 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Sep 2006 |
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Keywords
- Brain
- Cell differentiation
- Cerebellum
- Gene expression regulation
- Type II DNA topoisomerases
ASJC Scopus subject areas
- Anatomy
Cite this
Expression dynamics and functional implications of DNA topoisomerase IIβ in the brain. / Tsutsui, Kimiko M.; Sano, Kuniaki; Hosoya, Osamu; Tsutsui, Ken.
In: Anatomical Science International, Vol. 81, No. 3, 09.2006, p. 156-163.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Expression dynamics and functional implications of DNA topoisomerase IIβ in the brain
AU - Tsutsui, Kimiko M.
AU - Sano, Kuniaki
AU - Hosoya, Osamu
AU - Tsutsui, Ken
PY - 2006/9
Y1 - 2006/9
N2 - Mammalian DNA topoisomerase IIbeta; is a type II DNA topoisomerase that catalyses topological transformations of genomic DNA by the transport of one DNA double helix through another. The IIβ enzyme is highly expressed in cells that have undergone the final cell division and committed to differentiate into neuronal cells. The IIβ enzyme in the differentiating neuronal cells is located in the nucleoplasm and is actively engaged in its catalytic reaction in vivo. When enzyme action is interfered with a specific inhibitor in vitro, transcriptional induction of a subset of genes fails to occur during neuronal differentiation. Detailed analyses of developing rat cerebellum and the cerebrum of mice with disrupted IIβ genes have revealed that DNA topoisomerase IIβ is necessary for the developmentally regulated expression of certain genes in cells committed to a neuronal fate after the final division. Herein, we review a dynamic aspect of DNA topoisomerase IIβ in the brain with special emphasis on developing cerebellar neurons.
AB - Mammalian DNA topoisomerase IIbeta; is a type II DNA topoisomerase that catalyses topological transformations of genomic DNA by the transport of one DNA double helix through another. The IIβ enzyme is highly expressed in cells that have undergone the final cell division and committed to differentiate into neuronal cells. The IIβ enzyme in the differentiating neuronal cells is located in the nucleoplasm and is actively engaged in its catalytic reaction in vivo. When enzyme action is interfered with a specific inhibitor in vitro, transcriptional induction of a subset of genes fails to occur during neuronal differentiation. Detailed analyses of developing rat cerebellum and the cerebrum of mice with disrupted IIβ genes have revealed that DNA topoisomerase IIβ is necessary for the developmentally regulated expression of certain genes in cells committed to a neuronal fate after the final division. Herein, we review a dynamic aspect of DNA topoisomerase IIβ in the brain with special emphasis on developing cerebellar neurons.
KW - Brain
KW - Cell differentiation
KW - Cerebellum
KW - Gene expression regulation
KW - Type II DNA topoisomerases
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U2 - 10.1111/j.1447-073X.2006.00146.x
DO - 10.1111/j.1447-073X.2006.00146.x
M3 - Article
VL - 81
SP - 156
EP - 163
JO - Anatomical Science International
JF - Anatomical Science International
SN - 1447-6959
IS - 3
ER -