The chromosome conformation capture (3C) technique is fundamental to many population-based methods investigating chromatin dynamics and organization in eukaryotes. Here, we provide a modified quantitative 3C (3C-qPCR) protocol for improved quantitative analyses of intra-chromosomal contacts. We also describe an algorithm for data normalization which allows more accurate comparisons between contact profiles.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/7651_2015_269 | DOI Listing |
Nat Commun
December 2024
Division of Experimental Parasitology, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, 82152, Planegg-Martinsried, Germany.
The eukaryotic nucleus exhibits a highly organized 3D genome architecture, with RNA transcription and processing confined to specific nuclear structures. While intra-chromosomal interactions, such as promoter-enhancer dynamics, are well-studied, the role of inter-chromosomal interactions remains poorly understood. Investigating these interactions in mammalian cells is challenging due to large genome sizes and the need for deep sequencing.
View Article and Find Full Text PDFbioRxiv
December 2024
Department of Biochemistry and Molecular Biology, University Park, PA 16802, USA.
The genome-wide chromosome conformation capture method, Hi-C, has greatly advanced our understanding of genome organization. However, its quantitative properties, including sensitivity, bias, and linearity, remain challenging to assess. Measuring these properties is difficult due to the heterogenous and dynamic nature of chromosomal interactions.
View Article and Find Full Text PDFbioRxiv
September 2024
Department of Genome Sciences, University of Washington, Seattle, WA, USA.
Three-dimensional nuclear DNA architecture comprises well-studied intra-chromosomal () folding and less characterized inter-chromosomal () interfaces. Current predictive models of 3D genome folding can effectively infer pairwise -chromatin interactions from the primary DNA sequence but generally ignore contacts. There is an unmet need for robust models of -genome organization that provide insights into their underlying principles and functional relevance.
View Article and Find Full Text PDFMammalian genomes are subdivided into euchromatic A compartments that contain mostly active chromatin, and inactive, heterochromatic B compartments. However, it is unknown how A and B genome compartments are established and maintained. Here we studied SMCHD1, an SMC-like protein in human male myoblasts.
View Article and Find Full Text PDFbioRxiv
September 2023
Molecular Biotechnology Center "Guido Tarone", Dept. of Molecular Biotechnology and Health Sciences, University of Turin, Torino, Italy.
Most studies of genome organization have focused on intra-chromosomal () contacts because they harbor key features such as DNA loops and topologically associating domains. Inter-chromosomal () contacts have received much less attention, and tools for interrogating potential biologically relevant structures are lacking. Here, we develop a computational framework to identify sets of loci that jointly interact in from Hi-C data.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!