Checkpoint and Coordinated Cellular Responses to DNA Damage

Author(s):  
Xiaohong H. Yang ◽  
Lee Zou
2016 ◽  
Vol 27 (24) ◽  
pp. 3791-3799 ◽  
Author(s):  
Hafida Sellou ◽  
Théo Lebeaupin ◽  
Catherine Chapuis ◽  
Rebecca Smith ◽  
Anna Hegele ◽  
...  

Chromatin relaxation is one of the earliest cellular responses to DNA damage. However, what determines these structural changes, including their ATP requirement, is not well understood. Using live-cell imaging and laser microirradiation to induce DNA lesions, we show that the local chromatin relaxation at DNA damage sites is regulated by PARP1 enzymatic activity. We also report that H1 is mobilized at DNA damage sites, but, since this mobilization is largely independent of poly(ADP-ribosyl)ation, it cannot solely explain the chromatin relaxation. Finally, we demonstrate the involvement of Alc1, a poly(ADP-ribose)- and ATP-dependent remodeler, in the chromatin-relaxation process. Deletion of Alc1 impairs chromatin relaxation after DNA damage, while its overexpression strongly enhances relaxation. Altogether our results identify Alc1 as an important player in the fast kinetics of the NAD+- and ATP-dependent chromatin relaxation upon DNA damage in vivo.


2009 ◽  
Vol 37 (9) ◽  
pp. e68-e68 ◽  
Author(s):  
Xiangduo Kong ◽  
Samarendra K. Mohanty ◽  
Jared Stephens ◽  
Jason T. Heale ◽  
Veronica Gomez-Godinez ◽  
...  

1998 ◽  
pp. 395-442 ◽  
Author(s):  
KumKum Khanna ◽  
Richard Gatti ◽  
Patrick Concannon ◽  
Corry M. R. Weemaes ◽  
Merl F. Hoekstra ◽  
...  

PLoS ONE ◽  
2017 ◽  
Vol 12 (3) ◽  
pp. e0170358 ◽  
Author(s):  
Tao Lu ◽  
Ye Zhang ◽  
Yared Kidane ◽  
Alan Feiveson ◽  
Louis Stodieck ◽  
...  

2020 ◽  
Vol 14 (6) ◽  
pp. 1185-1206
Author(s):  
Ariel Bensimon ◽  
Jonas P. Koch ◽  
Paola Francica ◽  
Selina M. Roth ◽  
Rahel Riedo ◽  
...  

1995 ◽  
Vol 5 (1) ◽  
pp. 32-40 ◽  
Author(s):  
Antony M. Carr ◽  
Merl F. Hoekstra

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