Asymmetry of DNA replication fork progression in Werner's syndrome
Asymmetry of DNA replication fork progression in Werner's syndrome
复制标题
沃纳综合征 DNA 复制叉进展的不对称性
DOI:
10.1046/j.1474-9728.2002.00002.x
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发表时间:
2002
期刊:
影响因子:
7.8
通讯作者:
L. Cox
中科院分区:
文献类型:
--
作者:
A. Rodriguez;D. Jackson;F. Iborra;L. Cox
Human aging is associated with accumulation of cells that have undergone replicative senescence. The rare premature aging Werner's syndrome (WS) provides a phenocopy of normal human aging and WS patient cells recapitulate the aging phenotype in culture as they rapidly lose the ability to proliferate or replicate their DNA. WS is associated with loss of functional WRN protein. Although the biochemical properties of WRN protein, which possesses both helicase and exonuclease activities, suggest an involvement in DNA metabolism, its action in cells is not clear. Here, we provide experimental evidence for a role of the WRN protein in DNA replication in normally proliferating cells. Most importantly, we demonstrate that in the absence of functional WRN protein, replication forks from origins of bidirectional replication fail to progress normally, resulting in marked asymmetry of bidirectional forks. We propose that WRN acts in normal DNA replication to prevent collapse of replication forks or to resolve DNA junctions at stalled replication forks, and that loss of this capacity may be a contributory factor in premature aging.
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DOI:
--
发表时间:
1998
期刊:
2018 25th IEEE International Conference on Image Processing (ICIP)
影响因子:
--
作者:
A. Kamath-Loeb;Jiang-Cheng Shen;L. Loeb;M. Fry
通讯作者:
A. Kamath-Loeb;Jiang-Cheng Shen;L. Loeb;M. Fry
影响因子:
14.9
作者:
Orren,DK;Machwe,A;Karmakar,P;Piotrowski,J;Cooper,MP;Bohr,VA
通讯作者:
Bohr,VA
影响因子:
3.7
作者:
POOT, M;HOEHN, H;MARTIN, GM
通讯作者:
MARTIN, GM
影响因子:
14.9
作者:
Shen, JC;Gray, MD;Loeb, LA
通讯作者:
Loeb, LA
DOI:
10.1126/science.7569932
发表时间:
1995
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Yan,H;Newport,J
通讯作者:
Newport,J