DNA damage alters nuclear mechanics through chromatin reorganization.

DNA damage alters nuclear mechanics through chromatin reorganization.
复制标题

DOI:
10.1093/nar/gkaa1202
复制
发表时间:
2021-01-11
影响因子:
14.9
通讯作者:
Toseland CP
Toseland CP
中科院分区:
生物学2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

文献摘要

参考文献

被引文献

相似文献

DNA双链断裂导致基因组不稳定。然而,这些过程如何影响细胞核的生物力学性质以及核力学在DNA损伤和修复效率中起什么作用仍然是未知的。在这里,我们使用原子力显微镜来研究核机械的变化,所产生的外部诱导的DNA损伤。我们发现,顺铂治疗后,核硬度显着降低,作为DNA损伤信号传导的结果。这种软化与整体染色质去凝聚有关,这改善了细胞器内的分子扩散。我们认为这可以增加修复因子的招募。有趣的是,我们还发现,通过细胞骨架松弛降低核张力对细胞具有保护作用,并减少DNA损伤的积累。总的来说,这些变化可以防止进一步的基因组不稳定性,并促进DNA修复。我们认为这些过程可能是耐药性发展的基础。
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.
DOI: 10.1038/nmeth.2277
发表时间: 2013-01
期刊: NATURE METHODS
影响因子: 48
作者:
Abrahamsson, Sara;Chen, Jiji;Hajj, Bassam;Stallinga, Sjoerd;Katsov, Alexander Y.;Wisniewski, Jan;Mizuguchi, Gaku;Soule, Pierre;Mueller, Florian;Darzacq, Claire Dugast;Darzacq, Xavier;Wu, Carl;Bargmann, Cornelia I.;Agard, David A.;Dahan, Maxime;Gustafsson, Mats G. L.
通讯作者: Gustafsson, Mats G. L.
DOI: 10.1002/cpcb.88
发表时间: 2019-06-01
影响因子: --
作者:
Aaron, Jesse;Wait, Eric;Chew, Teng-Leong
通讯作者: Chew, Teng-Leong
DOI: 10.1128/mcb.01830-08
发表时间: 2009-05-15
影响因子: 5.3
作者:
Fragkos, Michalis;Jurvansuu, Jaana;Beard, Peter
通讯作者: Beard, Peter
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