DNA damage alters nuclear mechanics through chromatin reorganization.
DNA damage alters nuclear mechanics through chromatin reorganization.
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DOI:
10.1093/nar/gkaa1202
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发表时间:
2021-01-11
影响因子:
14.9
通讯作者:
Toseland CP
中科院分区:
文献类型:
--
作者:
Dos Santos Á;Cook AW;Gough RE;Schilling M;Olszok NA;Brown I;Wang L;Aaron J;Martin-Fernandez ML;Rehfeldt F;Toseland CP
DNA double-strand breaks drive genomic instability. However, it remains unknown how these processes may affect the biomechanical properties of the nucleus and what role nuclear mechanics play in DNA damage and repair efficiency. Here, we have used Atomic Force Microscopy to investigate nuclear mechanical changes, arising from externally induced DNA damage. We found that nuclear stiffness is significantly reduced after cisplatin treatment, as a consequence of DNA damage signalling. This softening was linked to global chromatin decondensation, which improves molecular diffusion within the organelle. We propose that this can increase recruitment for repair factors. Interestingly, we also found that reduction of nuclear tension, through cytoskeletal relaxation, has a protective role to the cell and reduces accumulation of DNA damage. Overall, these changes protect against further genomic instability and promote DNA repair. We propose that these processes may underpin the development of drug resistance.
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Gustafsson, Mats G. L.
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DOI:
10.1083/jcb.200704140
发表时间:
2007-09-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Murga M;Jaco I;Fan Y;Soria R;Martinez-Pastor B;Cuadrado M;Yang SM;Blasco MA;Skoultchi AI;Fernandez-Capetillo O
通讯作者:
Fernandez-Capetillo O
DOI:
10.1073/pnas.1814965116
发表时间:
2019-04-09
影响因子:
11.1
作者:
Lou, Jieqiong;Scipioni, Lorenzo;Hinde, Elizabeth
通讯作者:
Hinde, Elizabeth