Results 101 to 110 of about 800,836 (279)

RNAP II antagonizes mitotic chromatin folding and chromosome segregation by condensin

Cell Reports
Summary: Condensin shapes mitotic chromosomes by folding chromatin into loops, but whether it does so by DNA-loop extrusion remains speculative. Although loop-extruding cohesin is stalled by transcription, the impact of transcription on condensin, which ...
Jérémy Lebreton, Léonard Colin, Elodie Chatre, Pascal Bernard   +3 more
doaj   +1 more source

CTCF Binding Polarity Determines Chromatin Looping

Molecular Cell, 2015
CCCTC-binding factor (CTCF) is an architectural protein involved in the three-dimensional (3D) organization of chromatin. In this study, we assayed the 3D genomic contact profiles of a large number of CTCF binding sites with high-resolution 4C-seq. As recently reported, our data also suggest that chromatin loops preferentially form between CTCF binding
de Wit, Elzo, Vos, Erica S M, Holwerda, Sjoerd J B, Valdes-Quezada, Christian, Verstegen, Marjon J A M, Teunissen, Hans, Splinter, Erik, Wijchers, Patrick J, Krijger, Peter H L, de Laat, Wouter   +9 more
openaire   +3 more sources

Targeting CD300a Signaling With a Phosphatidylserine‐Presenting Hydrogel Rescues Macrophage Dysfunction and Accelerates Diabetic Wound Healing

Advanced Healthcare Materials, EarlyView.
Schematic illustration of the proposed mechanism: PEG/RGD‐PSLs mimic apoptotic cells to engage PS receptors (notably CD300a), transducing an inhibitory signal that suppresses the MyD88/NF‐κB pathway, leading to global anti‐inflammatory and pro‐reparative effects.
Lele Wu, Xuetong Hao, Yang Zou, Xinglin Chen, Junyan Kong, Chunning Gu, Wenjie Ma, Zhongjun Yang, Huifen Liu, Mengmeng Liu, Xin Tong   +10 more
wiley   +1 more source

Characterizing meiotic chromosomes' structure and pairing using a designer sequence optimized for Hi‐C

Molecular Systems Biology, 2018
In chromosome conformation capture experiments (Hi‐C), the accuracy with which contacts are detected varies due to the uneven distribution of restriction sites along genomes.
Héloïse Muller, Vittore F Scolari, Nicolas Agier, Aurèle Piazza, Agnès Thierry, Guillaume Mercy, Stéphane Descorps‐Declere, Luciana Lazar‐Stefanita, Olivier Espeli, Bertrand Llorente, Gilles Fischer, Julien Mozziconacci, Romain Koszul   +12 more
doaj   +1 more source

Hierarchical cooperation of transcription factors from integration analysis of DNA sequences, ChIP-Seq and ChIA-PET data

BMC Genomics, 2019
Background Chromosomal architecture, which is constituted by chromatin loops, plays an important role in cellular functions. Gene expression and cell identity can be regulated by the chromatin loop, which is formed by proximal or distal enhancers and ...
Ruimin Wang, Yunlong Wang, Xueying Zhang, Yaliang Zhang, Xiaoyong Du, Yaping Fang, Guoliang Li   +6 more
doaj   +1 more source

ESCO1 and CTCF enable formation of long chromatin loops by protecting cohesinSTAG1 from WAPL

eLife, 2020
Eukaryotic genomes are folded into loops. It is thought that these are formed by cohesin complexes via extrusion, either until loop expansion is arrested by CTCF or until cohesin is removed from DNA by WAPL.
Gordana Wutz, Rene Ladurner, Brian Glenn St Hilaire, Roman R Stocsits, Kota Nagasaka, Benoit Pignard, Adrian Sanborn, Wen Tang, Csilla Várnai, Miroslav P Ivanov, Stefan Schoenfelder, Petra van der Lelij, Xingfan Huang, Gerhard Dürnberger, Elisabeth Roitinger, Karl Mechtler, Iain Finley Davidson, Peter Fraser, Erez Lieberman-Aiden, Jan-Michael Peters   +19 more
doaj   +1 more source

Topological Spectra and Entropy of Chromatin Loop Networks

Physical Review Letters
The 3D folding of a mammalian gene can be studied by a polymer model, where the chromatin fiber is represented by a semiflexible polymer which interacts with multivalent proteins, representing complexes of DNA-binding transcription factors and RNA polymerases. This physical model leads to the natural emergence of clusters of proteins and binding sites,
Bonato, Andrea, Chiang, Michael, Corbett, Dom, Kitaev, Sergey, Marenduzzo, Davide, Morozov, Alexander, Orlandini, Enzo   +6 more
openaire   +5 more sources

Dual Role of Tamoxifen in Enhancing STING and CEACAM1 Expression to Prime a Favorable Tumor Microenvironment for Anti‐TIM3 Immunotherapy

Advanced Science, EarlyView.
Anti‐PD‐1/PD‐L1 blockade has revolutionized cancer immunotherapy, but is ineffective against endocrine‐treated (i.e., Tamoxifen), relapsed ER+ breast cancer (BC) patients. This study provides insight into the sub‐optimal response of ER+BCs to anti‐PD‐1/PD‐L1 blockade – highlighting the induction of STING and the CEACAM1/TIM3 axis after chronic ...
Marvin Angelo E Aberin, Saurabh Singh, Soumya Chatterjee, Guang‐Zhi Sui, Yi‐Fu Wang, Ya‐Ting Lu, Yu‐Ling Lee, Kun‐Yuan Lin, Joy Khag, Ta‐Yu Liu, Shao‐Han Chang, Wai‐Mui Cheung, Hsiao‐Chin Hong, Ren‐Jun Hsu, Chen‐Yang Shen, Chia‐Wei Li, Weng‐Lang Yang, Yao‐Ming Chang, Shih‐Yu Chen, Chandan Guha, Shu‐Ping Wang   +20 more
wiley   +1 more source

TRAIP Mediates Alcohol‐Induced Liver Injury through Regulating β‐catenin Ubiquitin Degradation via Direct Interaction

Advanced Science, EarlyView.
This study reveals that NF‐κB1‐driven TRAIP upregulation in ALD correlates with disease severity. Mechanistically, TRAIP directly binds β‐catenin via its CC domain and promotes its K48‐linked ubiquitination and degradation, which is independent of the GSK3β/β‐TrCP pathway.
Zhan Wu, Mingjiang Liu, Lijuan Liao, Zhaohong Mo, Wenli Xu, Linfeng Mao, Yubing Chen, Qiuli Xie, Ming Yao, Shilian Chen, Stephen Tomlinson, Sebastian Mueller, Songqing He, Guandou Yuan   +13 more
wiley   +1 more source

Auto‐Downregulation of the Florigen FT Production Prevents Precocious Flowering in Plants

Advanced Science, EarlyView.
This study shows that the leaf vein‐expressed FD complexes with the florigen FT to bind DNA motifs in FT promoter, which antagonizes CONSTANS‐mediated FT activation to feedback down‐regulate FT expression. This prevents an excessive induction of FT expression by inductive photoperiods, thereby precluding precocious transition to flowering in ...
Shu Tian, Xiao Luo, Bowen Cui, Yuehui He
wiley   +1 more source