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Cell Cycle Phase Transitions: Signposts for Aberrant Cell Cycle Reentry in Dying Mature Neurons | OMICS International | Abstract
ISSN: 2157-7099

Journal of Cytology & Histology
Open Access

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Editorial

Cell Cycle Phase Transitions: Signposts for Aberrant Cell Cycle Reentry in Dying Mature Neurons

Da Zhi Liu* and Bradley P Ander

Department of Neurology and the M.I.N.D. Institute, University of California at Davis, Sacramento, California 95817, USA

*Corresponding Author:
Da-Zhi Liu
Department of Neurology and the M.I.N.D. Institute
University of California at Davis
Sacramento, California 95817, USA
Tel: +1- 916- 703- 0384
E-mail: [email protected]

Received Date: June 20, 2011; Accepted Date: June 23, 2011; Published Date: June 23, 2011

Citation: Liu DZ, Ander BP (2011) Cell Cycle Phase Transitions: Signposts for Aberrant Cell Cycle Reentry in Dying Mature Neurons. J Cytol Histol 2:e101. doi:10.4172/2157-7099.1000e101

Copyright: © 2011 Liu DZ, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The last two decades have brought forth compelling new findings showing that aberrant cell cycle reentry results in death of mature neurons [1-3]. The cell cycle is an irreversible, ordered set of events [4], that normally leads to cellular division [5-7]. The release of cells from a quiescent state (G0) results in their entry into the first gap phase (G1), during which the cells prepare for DNA replication in the synthetic phase (S). This is followed by the second gap phase (G2) and mitosis phase (M). After the cell has split into its two daughter cells, the cell enters either G1 or G0. Mature neurons normally maintain themselves in G0 resting phase. Although they are unable to divide once differentiated, mature neurons do reenter cell cycle in certain pathological conditions. However, these mature neurons that reenter cell cycle neither revert to the earlier G0 nor advance to a new G0 phase. This presents a critical dilemma from which death may be an unavoidable, but necessary, outcome for these critical cells.

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