Results 101 to 110 of about 133,661 (356)

RNAi and Heterochromatin Assembly [PDF]

open access: yesCold Spring Harbor Perspectives in Biology, 2015
The involvement of RNA interference (RNAi) in heterochromatin formation has become clear largely through studies in the fission yeast Schizosaccharomyces pombe and plants like Arabidopsis thaliana. This article discusses how heterochromatic small interfering RNAs are produced and how the RNAi machinery participates in the formation and function of ...
Danesh Moazed, Robert A. Martienssen
openaire   +2 more sources

FISH mapping and molecular organization of the major repetitive sequences of tomato [PDF]

open access: yes, 2008
This paper presents a bird's-eye view of the major repeats and chromatin types of tomato. Using fluorescence in-situ hybridization (FISH) with Cot-1, Cot-10 and Cot-100 DNA as probes we mapped repetitive sequences of different complexity on pachytene ...
Chang, S.B.   +10 more
core   +2 more sources

Nortriptyline Inhibits Lysosomal Exocytosis‐Mediated SASP During Gastric Cancer Progression via Targeting HOXA1‐PITX2 Phase Separation

open access: yesAdvanced Science, EarlyView.
This study identifies that HOXA1 facilitates transcriptional activity of PITX2 in liquid condensates, resulting in up‐regulation of MCOLN1 and RAB3A followed by lysosomal exocytosis of LGALS1 and IGFBP7 from senescent cells, thus activating AKT signaling and EMT.
Yi Zhou   +10 more
wiley   +1 more source

HP1a-mediated heterochromatin formation inhibits high dietary sugar-induced tumor progression

open access: yesCell Death and Disease, 2021
High dietary sugar (HDS) is a modern dietary concern that involves excessive consumption of carbohydrates and added sugars, and increases the risk of metabolic disorders and associated cancers.
Che-Wei Chang   +2 more
doaj   +1 more source

TFIIIC Localizes Budding Yeast ETC Sites to the Nuclear Periphery [PDF]

open access: yes, 2012
Peer reviewedPublisher ...
Botsios, Sotirios   +3 more
core   +2 more sources

Comprehensive Mapping of Functional Enhancers in Chinese Hamster Ovary Cells

open access: yesBiotechnology and Bioengineering, EarlyView.
In this study, the authors identified regions with enhancer activity in the CHO cell genome using genome‐wide and targeted STARR‐seq. The analysis revealed thousands of newly identified enhancer sequences, where some of the most active sequences could drive transgene expression at levels similar to or higher than strong viral enhancers.
María Santos   +9 more
wiley   +1 more source

Correlative light and soft X-ray tomography of in situ mesoscale heterochromatin structure in intact cells

open access: yesScientific Reports
Heterochromatin organization is critical to many genome-related programs including transcriptional silencing and DNA repair. While super-resolution imaging, electron microscopy, and multiomics methods have provided indirect insights into the ...
Rajshikhar Gupta   +5 more
doaj   +1 more source

Somatic Pairing in Drosophila virilis Mitosis [PDF]

open access: yes, 1975
In neuroblast cells homologous chromosomes tend to pair during prophase of mitosis. Heterochromatic elements of homologous chromosomes are widely separated in very early prophase, at which time the euchromatin is poorly stained.
Guest, William C.
core   +2 more sources

Gene regulation and epigenotype in Friedreich's ataxia [PDF]

open access: yes, 2008
Friedreich??????s ataxia (FRDA) is known to be provoked by an abnormal GAA-repeat expansion located in the first intron of the FXN gene. As a result of the GAA expansion, patients exhibit low levels of FXN mRNA, leading to FRDA.
Rothe, Nadine, Rothe, Nadine
core   +2 more sources

The Aging Gut–Brain Axis: Effects of Dietary Polyphenols and Metal Exposure

open access: yesChronic Diseases and Translational Medicine, EarlyView.
The influence of gut microbiota on brain health ABSTRACT Diet provides essential metals, which are required for the growth, development, and well‐functioning of the body. Nonetheless, some natural and human activities add toxic heavy metals to the diet, consequently introducing them to our bodies, resulting in several disorders and death. The intestine,
Luqi Cao   +7 more
wiley   +1 more source

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