OpenLooper (OLP)


Previous research efforts have advanced our understanding of specific chromosomal events, such as DNA transcription,replication, recombination, partitioning, and epigenetic modification. One of the major future challenges in chromosome biology will be to provide an overall framework of how these individual activities are orchestrated and coordinated to maximize their effects in a variety of biological processes that evolve over time.

OpenLooper (OLP) collects genome-wide data on chromatin structures investigated by various high-throughput experimental assays, such as Hi-C, ChIA-PET, ChIP-seq, and RNA-seq. Simultaneously, OLP provides a platform that supports opening and sharing high-throughput sequencing datasets.
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In Focus Articles (last modified: 2019-07-12 15:37:53)

[1] Three-Dimensional Genomic Structure and Cohesin Occupancy Correlate with Transcriptional Activity du...  (Cell Rep. 2019 Jul 09;28(2):352-367.e9)

Three-Dimensional Genomic Structure and Cohesin Occupancy Correlate with Transcriptional Activity during Spermatogenesis.


Vara C, Paytuví-Gallart A, Cuartero Y, Le Dily F, Garcia F, Salvà-Castro J, Gómez-H L, Julià E, Moutinho C, Aiese Cigliano R, Sanseverino W, Fornas O, Pendás AM, Heyn H, Waters PD, Marti-Re... (Cell Rep. 2019 Jul 09;28(2):352-367.e9)
Mammalian gametogenesis involves dramatic and tightly regulated chromatin remodeling, whose regulatory pathways remain largely unexplored. Here, we generate a comprehensive high-resolution structural and functional atlas of mouse spermatogenesis by combining in situ chromosome conformation capture sequencing (Hi-C), RNA sequencing (RNA-seq), and chromatin immunoprecipitation sequencing (ChIP-seq) ......
PubMed:31291573
[2] CTCF-Mediated Chromatin Loops between Promoter and Gene Body Regulate Alternative Splicing across In...  (Cell Syst. 2017 12 27;5(6):628-637.e6)

CTCF-Mediated Chromatin Loops between Promoter and Gene Body Regulate Alternative Splicing across Individuals.


Ruiz-Velasco M, Kumar M, Lai MC, Bhat P, Solis-Pinson AB, Reyes A, Kleinsorg S, Noh KM, Gibson TJ, Zaugg JB (Cell Syst. 2017 12 27;5(6):628-637.e6)
The CCCTC-binding factor (CTCF) is known to establish long-range DNA contacts that alter the three-dimensional architecture of chromatin, but how the presence of CTCF influences nearby gene expression is still poorly understood. Here, we analyze CTCF chromatin immunoprecipitation sequencing, RNA sequencing, and Hi-C data, together with genotypes from a healthy human cohort, and measure statistical......
PubMed:29199022
[3] A draft genome for Spatholobus suberectus.  (Sci Data. 2019 Jul 04;6(1):113)

A draft genome for Spatholobus suberectus.


Qin S, Wu L, Wei K, Liang Y, Song Z, Zhou X, Wang S, Li M, Wu Q, Zhang K, Hui Y, Wang S, Miao J, Zhang Z (Sci Data. 2019 Jul 04;6(1):113)
Spatholobus suberectus Dunn (S. suberectus), which belongs to the Leguminosae, is an important medicinal plant in China. Owing to its long growth cycle and increased use in human medicine, wild resources of S. suberectus have decreased rapidly and may be on the verge of extinction. De novo assembly of the whole S. suberectus genome provides us a critical potential resource towards biosynthesis of ......
PubMed:31273216
[4] Finding Friends in the Crowd: Three-Dimensional Cliques of Topological Genomic Domains.  (Front Genet. 2019;10:602)

Finding Friends in the Crowd: Three-Dimensional Cliques of Topological Genomic Domains.


Collas P, Liyakat Ali TM, Brunet A, Germier T (Front Genet. 2019;10:602)
The mammalian genome is intricately folded in a three-dimensional topology believed to be important for the orchestration of gene expression regulating development, differentiation and tissue homeostasis. Important features of spatial genome conformation in the nucleus are promoter-enhancer contacts regulating gene expression within topologically-associated domains (TADs), short- and long-range in......
PubMed:31275364
[5] Chromatin interaction networks revealed unique connectivity patterns of broad H3K4me3 domains and su...  (Sci Rep. 2017 10 31;7(1):14466)

Chromatin interaction networks revealed unique connectivity patterns of broad H3K4me3 domains and super enhancers in 3D chromatin.


Thibodeau A, Márquez EJ, Shin DG, Vera-Licona P, Ucar D (Sci Rep. 2017 10 31;7(1):14466)
Broad domain promoters and super enhancers are regulatory elements that govern cell-specific functions and harbor disease-associated sequence variants. These elements are characterized by distinct epigenomic profiles, such as expanded deposition of histone marks H3K27ac for super enhancers and H3K4me3 for broad domains, however little is known about how they interact with each other and the rest o......
PubMed:29089515