Neuronal cell cycle: the neuron itself and its circumstances.
Neuronal cell cycle: the neuron itself and its circumstances.
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DOI:
10.1080/15384101.2015.1004937
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Ovejero-Benito MC
中科院分区:
文献类型:
--
作者:
Frade JM;Ovejero-Benito MC
Neurons are usually regarded as postmitotic cells that undergo apoptosis in response to cell cycle reactivation. Nevertheless, recent evidence indicates the existence of a defined developmental program that induces DNA replication in specific populations of neurons, which remain in a tetraploid state for the rest of their adult life. Similarly, de novo neuronal tetraploidization has also been described in the adult brain as an early hallmark of neurodegeneration. The aim of this review is to integrate these recent developments in the context of cell cycle regulation and apoptotic cell death in neurons. We conclude that a variety of mechanisms exists in neuronal cells for G1/S and G2/M checkpoint regulation. These mechanisms, which are connected with the apoptotic machinery, can be modulated by environmental signals and the neuronal phenotype itself, thus resulting in a variety of outcomes ranging from cell death at the G1/S checkpoint to full proliferation of differentiated neurons.
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