Results 121 to 130 of about 452,870 (322)
Advanced Functional Materials, EarlyView.Oct4‐nanoscript, a biomimetic nanoparticle‐based artificial transcription factor, precisely regulates cellular rejuvenation by activating Oct4 target genes, restoring epigenetic marks, and reducing DNA damage. In a progeria model, it effectively rescued aging‐associated pathologies and extended lifespan.
Hongwon Kim +8 more
wiley +1 more source
Molecular Systems Biology, 2017 Polycomb repression in mouse embryonic stem cells (ESCs) is tightly associated with promoter co‐occupancy of RNA polymerase II (RNAPII) which is thought to prime genes for activation during early development. However, it is unknown whether RNAPII poising
Carmelo Ferrai +11 more
doaj +1 more source
Understanding how chromatin folding and enzyme competition affect rugged epigenetic landscapes [PDF]
arXivEpigenetics plays a key role in cellular differentiation and maintaining cell identity, enabling cells to regulate their genetic activity without altering the DNA sequence. Epigenetic regulation occurs within the context of hierarchically folded chromatin, yet the interplay between the dynamics of epigenetic modifications and chromatin architecture ...
arxiv
Classification of Saccharomyces cerevisiae promoter regions into distinct chromatin classes reveals the existence of nucleosome-depleted hotspots of transcription factor occupancy [PDF]
arXiv, 2010 Transcription factors (TF) play an essential role in the cell as locus- and condition-specific recruiters of transcriptional machinery or chromatin-modifying complexes. However, predicting the in vivo profile of TF occupancy along the genome, which depends on complex interactions with other chromatin-associated proteins, from the DNA sequence remains a
arxiv
Advanced Healthcare Materials, EarlyView.The PVA‐GA hydrogel is formed through hydrogen bonding between PVA hydroxyl groups and GA galloyl units, enabling sustainable GA release and its extended biological activity. The hydrogel scavenges ROS to reduce oxidative stress, preventing mitochondrial damage from excessive ROS, mitigating hADSC senescence, and preserving VEGF secretion, offering a ...
Yiduo Zhou +11 more
wiley +1 more source
Methylation-dependent regulation of HIF-1α stability restricts retinal and tumour angiogenesis
Nature Communications, 2016 HIF-1α is a pivotal protein involved in angiogenesis and is known to be regulated posttranslationally. Here, the authors show that HIF-1α is methylated by Set7/9 methyltransferase, which reduces protein stability and contributes to reduced angiogenesis.
Yunho Kim +12 more
doaj +1 more source
Phase transitions in chromatin: mesoscopic and mean-field approaches [PDF]
arXivBy means of a minimal physical model, we investigate the interplay of two phase transitions at play in chromatin organization: (1) liquid-liquid phase separation (LLPS) within the fluid solvating chromatin, resulting in the formation of biocondensates, and (2) the coil-globule crossover of the chromatin fiber, which drives the condensation or extension
arxiv
Advanced Healthcare Materials, EarlyView.Minimal residual disease (MRD) leads to cancer relapse and poor survival in ovarian cancer. The lack of representative 3D models limits therapy development. The microfluidics‐based high throughput 3D microtumor platform described here generates clinically‐relevant MRD models. The 3D microtumors recapitulate the molecular signatures of MRD from patients.
Xingyun Yang +14 more
wiley +1 more source
An annotated list of bivalent chromatin regions in human ES cells: a new tool for cancer epigenetic research [PDF]
Oncotarget, Impact journals, 2017, 8, pp.4110 - 4124, 2018 CpG islands (CGI) marked by bivalent chromatin in stem cells are believed to be more prone to aberrant DNA methylation in tumor cells. The robustness and genome-wide extent of this instructive program in different cancer types remain to be determined.
arxiv