The Unresolved Problem of DNA Bridging.pdf (2.56 MB)
The unresolved problem of DNA bridging
journal contribution
posted on 2023-06-09, 23:50 authored by María Fernández CasanasMaría Fernández Casanas, Kok-Lung ChanKok-Lung ChanAccurate duplication and transmission of identical genetic information into offspring cells lies at the heart of a cell division cycle. During the last stage of cellular division, namely mitosis, the fully replicated DNA molecules are condensed into X-shaped chromosomes, followed by a chromosome separation process called sister chromatid disjunction. This process allows for the equal partition of genetic material into two newly born daughter cells. However, emerging evidence has shown that faithful chromosome segregation is challenged by the presence of persistent DNA intertwining structures generated during DNA replication and repair, which manifest as so-called ultra-fine DNA bridges (UFBs) during anaphase. Undoubtedly, failure to disentangle DNA linkages poses a severe threat to mitosis and genome integrity. This review will summarize the possible causes of DNA bridges, particularly sister DNA inter-linkage structures, in an attempt to explain how they may be processed and how they influence faithful chromosome segregation and the maintenance of genome stability.
Funding
Elucidating the mechanisms of centromere protection and disjunction in genome stability maintenance; G2743; WELLCOME TRUST; 104178/Z/14/A
Molecular basis of inheritable DNA lesions on genome transformation; G1408; WELLCOME TRUST; 104178/Z/14/Z
History
Publication status
- Published
File Version
- Published version
Journal
GenesISSN
2073-4425Publisher
MDPIExternal DOI
Issue
12Volume
9Page range
1-16Article number
a623Event location
SwitzerlandDepartment affiliated with
- Sussex Centre for Genome Damage Stability Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2021-05-12First Open Access (FOA) Date
2021-05-12First Compliant Deposit (FCD) Date
2021-05-12Usage metrics
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