HIFI: estimating DNA-DNA interaction frequency from Hi-C data at restriction-fragment resolution

Autor: Christopher JF Cameron, Josée Dostie, Mathieu Blanchette
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Genome Biology, Vol 21, Iss 1, Pp 1-15 (2020)
Druh dokumentu: article
ISSN: 1474-760X
DOI: 10.1186/s13059-019-1913-y
Popis: Abstract Hi-C is a popular technique to map three-dimensional chromosome conformation. In principle, Hi-C’s resolution is only limited by the size of restriction fragments. However, insufficient sequencing depth forces researchers to artificially reduce the resolution of Hi-C matrices at a loss of biological interpretability. We present the Hi-C Interaction Frequency Inference (HIFI) algorithms that accurately estimate restriction-fragment resolution Hi-C matrices by exploiting dependencies between neighboring fragments. Cross-validation experiments and comparisons to 5C data and known regulatory interactions demonstrate HIFI’s superiority to existing approaches. In addition, HIFI’s restriction-fragment resolution reveals a new role for active regulatory regions in structuring topologically associating domains.
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