TY - JOUR A1 - Lin, Yu A1 - Li, Jing A1 - Gu, Yiren A1 - Jin, Long A1 - Bai, Jingyi A1 - Zhang, Jiaman A1 - Wang, Yujie A1 - Liu, Pengliang A1 - Long, Keren A1 - He, Mengnan A1 - Li, Diyan A1 - Liu, Can A1 - Han, Ziyin A1 - Zhang, Yu A1 - Li, Xiaokai A1 - Zeng, Bo A1 - Lu, Lu A1 - Kong, Fanli A1 - Sun, Ying A1 - Fan, Yongliang A1 - Wang, Xun A1 - Wang, Tao A1 - Jiang, An'an A1 - Ma, Jideng A1 - Shen, Linyuan A1 - Zhu, Li A1 - Jiang, Yanzhi A1 - Tang, Guoqing A1 - Fan, Xiaolan A1 - Liu, Qingyou A1 - Li, Hua A1 - Wang, Jinyong A1 - Chen, Li A1 - Ge, Liangpeng A1 - Li, Xuewei A1 - Tang, Qianzi A1 - Li, Mingzhou T1 - Haplotype-resolved 3D chromatin architecture of the hybrid pig Y1 - 2024/02/01 JF - Genome Research JO - Genome Research SP - 310 EP - 325 DO - 10.1101/gr.278101.123 VL - 34 IS - 2 UR - http://genome.cshlp.org/content/34/2/310.abstract N2 - In diploid mammals, allele-specific three-dimensional (3D) genome architecture may lead to imbalanced gene expression. Through ultradeep in situ Hi-C sequencing of three representative somatic tissues (liver, skeletal muscle, and brain) from hybrid pigs generated by reciprocal crosses of phenotypically and physiologically divergent Berkshire and Tibetan pigs, we uncover extensive chromatin reorganization between homologous chromosomes across multiple scales. Haplotype-based interrogation of multi-omic data revealed the tissue dependence of 3D chromatin conformation, suggesting that parent-of-origin-specific conformation may drive gene imprinting. We quantify the effects of genetic variations and histone modifications on allelic differences of long-range promoter–enhancer contacts, which likely contribute to the phenotypic differences between the parental pig breeds. We also observe the fine structure of somatically paired homologous chromosomes in the pig genome, which has a functional implication genome-wide. This work illustrates how allele-specific chromatin architecture facilitates concomitant shifts in allele-biased gene expression, as well as the possible consequential phenotypic changes in mammals. ER -