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To better understand DNA's 3D folding in cell nuclei, researchers developed chromosome capture methods such as Hi-C that measure the contact frequencies between all DNA segment pairs across the genome. As Hi-C data sets often are massive,…

Biological Physics · Physics 2023-11-14 Anton Holmgren , Dolores Bernenko , Ludvig Lizana

Researchers developed chromosome capture methods such as Hi-C to better understand DNA's 3D folding in nuclei. The Hi-C method captures contact frequencies between DNA segment pairs across the genome. When analyzing Hi-C data sets, it is…

Physics and Society · Physics 2023-11-14 Dolores Bernenko , Sang Hoon Lee , Ludvig Lizana

Chromosome conformation capture experiments such as Hi-C are used to map the three-dimensional spatial organization of genomes. One specific feature of the 3D organization is known as topologically associating domains (TADs), which are…

Applications · Statistics 2019-10-18 Y. X. Rachel Wang , Purnamrita Sarkar , Oana Ursu , Anshul Kundaje , Peter J. Bickel

We discuss a polymer model for the 3D organization of human chromosomes. A chromosome is represented by a string of beads, with each bead being "colored" according to 1D bioinformatic data (e.g., chromatin state, histone modification, GC…

Biological Physics · Physics 2020-10-15 C. A. Brackley , D. Michieletto , F. Mouvet , J. Johnson , S. Kelly , P. R. Cook , D. Marenduzzo

The probability of two loci, separated by a certain genome length, being in contact can be inferred using the Chromosome Conformation Capture (3C) method and related Hi-C experiments. How to go from the contact map, a matrix listing the…

Soft Condensed Matter · Physics 2021-03-24 Guang Shi , D. Thirumalai

Community detection (CD) algorithms are applied to Hi-C data to discover new communities of loci in the 3D conformation of human and mouse DNA. We find that CD has some distinct advantages over pre-existing methods: (1) it is capable of…

Genomics · Quantitative Biology 2015-09-18 Irineo Cabreros , Emmanuel Abbe , Aristotelis Tsirigos

Chromatin is a polymer complex of DNA and proteins that regulates gene expression. The three-dimensional structure and organization of chromatin controls DNA transcription and replication. High-throughput chromatin conformation capture…

Chromosome capture techniques like Hi-C have expanded our understanding of mammalian genome 3D architecture and how it influences gene activity. To analyze Hi-C data sets, researchers increasingly treat them as DNA-contact networks and use…

Biological Physics · Physics 2024-05-10 Lucas Hedström , Antón Carcedo Martínez , Ludvig Lizana

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…

Quantitative Methods · Quantitative Biology 2016-01-13 Chris A Brackley , Jill M Brown , Dominic Waithe , Christian Babbs , James Davies , Jim R Hughes , Veronica J Buckle , Davide Marenduzzo

Background: The nucleus of eukaryotic cells spatially packages chromosomes into a hierarchical and distinct segregation that plays critical roles in maintaining transcription regulation. High-throughput methods of chromosome conformation…

Applications · Statistics 2021-04-20 Haipeng Xing , Yingru Wu , Yong Chen , Michael Zhang

Understanding the three-dimensional (3D) structure of the genome is essential for elucidating vital biological processes and their links to human disease. To determine how the genome folds within the nucleus, chromosome conformation capture…

To understand the nature of a cell, one needs to understand the structure of its genome. For this purpose, experimental techniques such as Hi-C detecting chromosomal contacts are used to probe the three-dimensional genomic structure. These…

Quantitative Methods · Quantitative Biology 2019-09-23 Andreas Hofmann , Fatema Zahra Rashid , Frédéric Crémazy , Remus T. Dame , Dieter W. Heermann

The 3D organisation of the genome in interphase cells is not a randomly folded polymer. Rather, experiments show that chromosomes arrange into a network of 3D compartments that correlate with biological processes, such as transcription,…

Biological Physics · Physics 2018-11-06 Kumar Rajendra , Ludvig Lizana , Per Stenberg

Modern biological techniques such as Hi-C permit to measure probabilities that different chromosomal regions are close in space. These probabilities can be visualised as matrices called contact maps. In this paper, we introduce a…

Biomolecules · Quantitative Biology 2020-10-21 Simone Pigolotti , Mogens H. Jensen , Yinxiu Zhan , Guido Tiana

The 3D folding of a mammalian gene can be studied by a polymer model, where the chromatin fibre is represented by a semiflexible polymer which interacts with multivalent proteins, representing complexes of DNA-binding transcription factors…

Biological Physics · Physics 2023-12-20 Andrea Bonato , Dom Corbett , Sergey Kitaev , Davide Marenduzzo , Alexander Morozov , Enzo Orlandini

Three-dimensional (3D) chromatin structure is closely related to genome function, in particular transcription. However, the folding path of the chromatin fiber in the interphase nucleus is unknown. Here, we systematically measured the 3D…

One of the most important tasks in understanding the complex spatial organization of the genome consists in extracting information about this spatial organization, the function and structure of chromatin topological domains from existing…

Biological Physics · Physics 2016-01-07 Alexander P. Moscalets , Leonid I. Nazarov , Mikhail V. Tamm

Three-Dimensional (3D) chromatin interactions, such as enhancer-promoter interactions (EPIs), loops, Topologically Associating Domains (TADs), and A/B compartments play critical roles in a wide range of cellular processes by regulating gene…

Genomics · Quantitative Biology 2024-03-07 Brydon P. G. Wall , My Nguyen , J. Chuck Harrell , Mikhail G. Dozmorov

The three dimensional structure of DNA in the nucleus (chromatin) plays an important role in many cellular processes. Recent experimental advances have led to high-throughput methods of capturing information about chromatin conformation on…

Genomics · Quantitative Biology 2015-11-05 Kevin Emmett , Benjamin Schweinhart , Raul Rabadan

Three-dimensional interphase organization of metazoan genomes has been linked to cellular identity. However, the principles governing 3D interphase genome architecture and its faithful transmission through disruptive events of cell-cycle,…

Subcellular Processes · Quantitative Biology 2016-04-12 Davide Michieletto , Davide Marenduzzo , Ajazul H. Wani
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