Measurement of replication structures at the nanometer scale using super-resolution light microscopy.
Measurement of replication structures at the nanometer scale using super-resolution light microscopy.
复制标题
使用超分辨率光显微镜在纳米尺度上测量复制结构。
DOI:
10.1093/nar/gkp901
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发表时间:
2010-01
影响因子:
14.9
通讯作者:
Cardoso MC
中科院分区:
文献类型:
--
作者:
Baddeley D;Chagin VO;Schermelleh L;Martin S;Pombo A;Carlton PM;Gahl A;Domaing P;Birk U;Leonhardt H;Cremer C;Cardoso MC
DNA replication, similar to other cellular processes, occurs within dynamic macromolecular structures. Any comprehensive understanding ultimately requires quantitative data to establish and test models of genome duplication. We used two different super-resolution light microscopy techniques to directly measure and compare the size and numbers of replication foci in mammalian cells. This analysis showed that replication foci vary in size from 210 nm down to 40 nm. Remarkably, spatially modulated illumination (SMI) and 3D-structured illumination microscopy (3D-SIM) both showed an average size of 125 nm that was conserved throughout S-phase and independent of the labeling method, suggesting a basic unit of genome duplication. Interestingly, the improved optical 3D resolution identified 3- to 5-fold more distinct replication foci than previously reported. These results show that optical nanoscopy techniques enable accurate measurements of cellular structures at a level previously achieved only by electron microscopy and highlight the possibility of high-throughput, multispectral 3D analyses.
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影响因子:
3.1
作者:
Muck, Joscha;Zink, Daniele
通讯作者:
Zink, Daniele
DOI:
10.1083/jcb.149.2.271
发表时间:
2000-04-17
期刊:
The Journal of cell biology
影响因子:
--
作者:
Leonhardt H;Rahn HP;Weinzierl P;Sporbert A;Cremer T;Zink D;Cardoso MC
通讯作者:
Cardoso MC
影响因子:
4
作者:
Koberna, K;Ligasová, A;Berezney, R
通讯作者:
Berezney, R
影响因子:
56.9
作者:
Schermelleh, Lothar;Carlton, Peter M.;Sedat, John W.
通讯作者:
Sedat, John W.
DOI:
10.1159/000070464
发表时间:
2003-01-01
期刊:
ComPlexUs
影响因子:
--
作者:
Failla, A. V.;Albrecht, B.;Cremer, C.
通讯作者:
Cremer, C.