| Autor: |
AlHaj Abed, Jumana, Erceg, Jelena, Goloborodko, Anton, Nguyen, Son C., McCole, Ruth B., Saylor, Wren, Fudenberg, Geoffrey, Lajoie, Bryan R., Dekker, Job, Mirny, Leonid A., Wu, C.-ting |
| Předmět: |
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| Zdroj: |
Nature Communications; 10/3/2019, Vol. 10 Issue 1, pN.PAG-N.PAG, 1p |
| Abstrakt: |
Trans-homolog interactions have been studied extensively in Drosophila, where homologs are paired in somatic cells and transvection is prevalent. Nevertheless, the detailed structure of pairing and its functional impact have not been thoroughly investigated. Accordingly, we generated a diploid cell line from divergent parents and applied haplotype-resolved Hi-C, showing that homologs pair with varying precision genome-wide, in addition to establishing trans-homolog domains and compartments. We also elucidate the structure of pairing with unprecedented detail, observing significant variation across the genome and revealing at least two forms of pairing: tight pairing, spanning contiguous small domains, and loose pairing, consisting of single larger domains. Strikingly, active genomic regions (A-type compartments, active chromatin, expressed genes) correlated with tight pairing, suggesting that pairing has a functional implication genome-wide. Finally, using RNAi and haplotype-resolved Hi-C, we show that disruption of pairing-promoting factors results in global changes in pairing, including the disruption of some interaction peaks. Trans-homolog interactions, such as homolog pairing, are highly structured and associated with gene function in Drosophila cells. Here, the authors use haplotype-resolved Hi-C to identify genome-wide trans-homolog interactions in a Drosophila hybrid cell line and investigate their patterns and functional roles. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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