Cell-cycle responses to DNA damage in G2

Andrew R. Cuddihy, Matthew J. O'Connell

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

Cellular reproduction, at its basic level, is simply the passing of genetic information from a single parent cell into two daughter cells. As the cellular genome encodes all the information that defines a cell, it is crucial that the genome be accurately replicated. Furthermore, the duplicated genome must be properly segregated so that each daughter cell contains the exact same information as the parent cell. The processes by which this occurs is known as the cell cycle. The failure of either duplication or segregation of the genome can have disastrous consequences for an organism, including cancer and death. This article discusses what is known about checkpoints, the surveillance mechanisms that monitor both the fidelity and accuracy of DNA replication and segregation. Specifically, we will focus on the G2 checkpoint that is responsible for ensuring proper segregation of the duplicated genome into the daughter cells and how this checkpoint functions to arrest entry into mitosis in response to DNA damage.

Original languageEnglish
Pages (from-to)99-140
Number of pages42
JournalInternational Review of Cytology
Volume222
DOIs
StatePublished - 2003
Externally publishedYes

Keywords

  • Cell cycle
  • Checkpoints
  • DNA damage
  • Genomic stability

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