DNA breaks and chromosome pulverization from errors in mitosis.
DNA breaks and chromosome pulverization from errors in mitosis.
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DOI:
10.1038/nature10802
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发表时间:
2012-01-18
期刊:
影响因子:
64.8
通讯作者:
Pellman, David
中科院分区:
文献类型:
--
作者:
Crasta, Karen;Ganem, Neil J.;Dagher, Regina;Lantermann, Alexandra B.;Ivanova, Elena V.;Pan, Yunfeng;Nezi, Luigi;Protopopov, Alexei;Chowdhury, Dipanjan;Pellman, David
Whether whole-chromosome aneuploidy promotes tumorigenesis has been controversial, in large part because of the paucity of insight into underlying mechanisms. Here we identify a mechanism by which mitotic chromosome segregation errors generate DNA breaks via the formation of structures called micronuclei. Whole chromosome-containing micronuclei form when mitotic errors produce lagging chromosomes. We tracked the fate of newly generated micronuclei and found that they undergo defective and asynchronous DNA replication, resulting in DNA damage and frequently pulverization of the chromosome in the micronucleus. Micronuclei can persist in cells over several generations but the chromosome in the micronucleus can also be distributed to daughter nuclei. Thus, chromosome segregation errors potentially lead to mutations and chromosome rearrangements that can integrate into the genome. Pulverization of chromosomes in micronuclei may also be one explanation for “chromothripsis” in cancer and developmental disorders, where isolated chromosomes or chromosome arms undergo massive local DNA breakage and rearrangement.
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影响因子:
3.3
作者:
Kline-Smith, SL;Khodjakov, A;Walczak, CE
通讯作者:
Walczak, CE
DOI:
10.1083/jcb.200510130
发表时间:
2006-04-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Bekker-Jensen S;Lukas C;Kitagawa R;Melander F;Kastan MB;Bartek J;Lukas J
通讯作者:
Lukas J
影响因子:
64.8
作者:
JOHNSON, RT;RAO, PN
通讯作者:
RAO, PN
DOI:
10.1083/jcb.119.3.493
发表时间:
1992-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Gavrieli Y;Sherman Y;Ben-Sasson SA
通讯作者:
Ben-Sasson SA
影响因子:
6
作者:
Gisselsson, D;Björk, J;Mandahl, N
通讯作者:
Mandahl, N