Predictive polymer modeling reveals coupled fluctuations in chromosome conformation and transcription.
Predictive polymer modeling reveals coupled fluctuations in chromosome conformation and transcription.
复制标题
预测聚合物建模揭示了染色体构象和转录中的波动耦合。
DOI:
10.1016/j.cell.2014.03.025
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发表时间:
2014-05-08
期刊:
影响因子:
64.5
通讯作者:
Heard E
中科院分区:
文献类型:
--
作者:
Giorgetti L;Galupa R;Nora EP;Piolot T;Lam F;Dekker J;Tiana G;Heard E
A new level of chromosome organization, Topologically Associating Domains (TADs), was recently uncovered by chromosome-confirmation-capture (3C) techniques. To explore TAD structure and function, we developed a polymer model that can extract the full repertoire of chromatin conformations within TADs from population-based 3C data. This model predicts actual physical distances and to what extent chromosomal contacts vary between cells. It also identifies interactions within single TADs that stabilize boundaries between TADs and allows us to identify and genetically validate key structural elements within TADs. Combining the model’s predictions with high-resolution DNA FISH and quantitative RNA FISH for TADs within the X-inactivation center (Xic), we dissect the relationship between transcription and spatial proximity to cis-regulatory elements. We demonstrate that contacts between potential regulatory elements occur in the context of fluctuating structures rather than stable loops and propose that such fluctuations may contribute to asymmetric expression in the Xic during X inactivation.
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影响因子:
46.9
作者:
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--
影响因子:
64.5
作者:
Masui O;Bonnet I;Le Baccon P;Brito I;Pollex T;Murphy N;Hupé P;Barillot E;Belmont AS;Heard E
通讯作者:
Heard E
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64.5
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Corces VG
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通讯作者:
Merkenschlager M
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Hou, Chunhui;Li, Li;Qin, Zhaohui S.;Corces, Victor G.
通讯作者:
Corces, Victor G.