Imputation-free reconstructions of three-dimensional chromosome architectures in human diploid single-cells using allele-specified contacts.
Imputation-free reconstructions of three-dimensional chromosome architectures in human diploid single-cells using allele-specified contacts.
复制标题
使用等位基因指定的接触在人类二倍体单细胞中进行三维染色体结构的无插补重建。
DOI:
10.1038/s41598-022-15038-4
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发表时间:
2022-07-11
影响因子:
4.6
通讯作者:
Ohta, Kunihiro
中科院分区:
文献类型:
--
作者:
Hirata, Yoshito;Oda, Arisa H. H.;Motono, Chie;Shiro, Masanori;Ohta, Kunihiro
Single-cell Hi-C analysis of diploid human cells is difficult because of the lack of dense chromosome contact information and the presence of homologous chromosomes with very similar nucleotide sequences. Thus here, we propose a new algorithm to reconstruct the three-dimensional (3D) chromosomal architectures from the Hi-C dataset of single diploid human cells using allele-specific single-nucleotide variations (SNVs). We modified our recurrence plot-based algorithm, which is suitable for the estimation of the 3D chromosome structure from sparse Hi-C datasets, by newly incorporating a function of discriminating SNVs specific to each homologous chromosome. Here, we eventually regard a contact map as a recurrence plot. Importantly, the proposed method does not require any imputation for ambiguous segment information, but could efficiently reconstruct 3D chromosomal structures in single human diploid cells at a 1-Mb resolution. Datasets of segments without allele-specific SNVs, which were considered to be of little value, can also be used to validate the estimated chromosome structure. Introducing an additional mathematical measure called a refinement further improved the resolution to 40-kb or 100-kb. The reconstruction data supported the notion that human chromosomes form chromosomal territories and take fractal structures where the dimension for the underlying chromosome structure is a non-integer value.
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影响因子:
1.5
作者:
Disteche CM;Berletch JB
通讯作者:
Berletch JB
影响因子:
2.6
作者:
Mirny, Leonid A.
通讯作者:
Mirny, Leonid A.
影响因子:
2.8
作者:
Hirata, Yoshito;Horai, Shunsuke;Aihara, Kazuyuki
通讯作者:
Aihara, Kazuyuki
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2.6
作者:
Tanio, Masaaki;Hirata, Yoshito;Suzuki, Hideyuki
通讯作者:
Suzuki, Hideyuki
影响因子:
4.3
作者:
Paulsen, Jonas;Gramstad, Odin;Collas, Philippe
通讯作者:
Collas, Philippe