利用生物信息学数据和聚合物模型预测哺乳动物基因组顺式调控区的三维折叠
Predicting the three-dimensional folding of cis-regulatory regions in mammalian genomes using bioinformatic data and polymer models
摘要：
染色体的三维结构可以使用Capture-C等方法进行探测。然而，目前还不清楚这些群体水平的数据如何与单个细胞内的组织相关，导致观察到的相互作用的机制在很大程度上仍然不清楚。我们提出了一个聚合物建模方案的基础上的假设，染色体结构是由蛋白质桥，形成染色质环。为了测试模型，我们进行FISH实验，并与Capture-C数据进行比较。仅仅从蛋白质结合位点的位置开始，我们的模型准确地预测了实验观察到的染色质相互作用，揭示了一个人口的3D构象。
英文摘要：
The three-dimensional organisation of chromosomes can be probed using methods such as Capture-C. However it is unclear how such population level data relates to the organisation within a single cell, and the mechanisms leading to the observed interactions are still largely obscure. We present a polymer modelling scheme based on the assumption that chromosome architecture is maintained by protein bridges which form chromatin loops. To test the model we perform FISH experiments and also compare with Capture-C data. Starting merely from the locations of protein binding sites, our model accurately predicts the experimentally observed chromatin interactions, revealing a population of 3D conformations.
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