Results 21 to 30 of about 29,743 (315)

A G-Quadruplex-Binding Small Molecule and the HDAC Inhibitor SAHA (Vorinostat) Act Synergistically in Gemcitabine-Sensitive and Resistant Pancreatic Cancer Cells

open access: yesMolecules, 2020
The stabilisation of G-quadruplexes (G4s) by small-molecule compounds is an effective approach for causing cell growth arrest, followed by cell death. Some of these compounds are currently being developed for the treatment of human cancers.
Ahmed Abdullah Ahmed, Stephen Neidle
doaj   +1 more source

Detection of Pathogens and Antimicrobial Resistance Genes at Low Concentration via Electrochemical Oligonucleotide Tags

open access: yesEngineering Proceedings, 2023
Pathogens can be detected electrochemically by measuring guanine oxidation signals generated from RNA or DNA hybridized to a biosensor working electrode. However, the associated limit of detection (LOD) is not sufficiently low for widespread clinical use.
Neil Gordon, Raj Bawa, Garry Palmateer
doaj   +1 more source

Quantitative Visualization of DNA G-quadruplex Structures in Human Cells

open access: yesNature Chemistry, 2013
Four-stranded G-quadruplex nucleic acid structures have been of great interest as their high thermodynamic stability under near-physiological conditions suggests that they could form in cells.
Giulia Biffi   +3 more
semanticscholar   +1 more source

Quadruplex DNA: sequence, topology and structure

open access: yesNucleic Acids Research, 2006
G-quadruplexes are higher-order DNA and RNA structures formed from G-rich sequences that are built around tetrads of hydrogen-bonded guanine bases. Potential quadruplex sequences have been identified in G-rich eukaryotic telomeres, and more recently in ...
Sarah W. Burge   +4 more
semanticscholar   +1 more source

Quadruplex Folding Promotes the Condensation of Linker Histones and DNAs via Liquid-Liquid Phase Separation.

open access: yesJournal of the American Chemical Society, 2021
Liquid-liquid phase separation (LLPS) of proteins and DNA has recently emerged as a possible mechanism underlying the dynamic organization of chromatin.
M. Mimura   +7 more
semanticscholar   +1 more source

G-Quadruplex Structures and G-Quadruplex-Interactive Compounds [PDF]

open access: yes, 2011
G-quadruplexes are noncanonical secondary structures formed in DNA sequences containing consecutive runs of guanines. DNA G-quadruplexes have recently emerged as attractive cancer therapeutic targets. It has been shown that the 3' G-rich single-stranded overhangs of human telomeres can form G-quadruplex structures.
Raveendra I, Mathad, Danzhou, Yang
openaire   +2 more sources

On the Road to Fight Cancer: The Potential of G-Quadruplex Ligands as Novel Therapeutic Agents

open access: yesInternational Journal of Molecular Sciences, 2021
Nucleic acid sequences able to adopt a G-quadruplex conformation are overrepresented within the human genome. This evidence strongly suggests that these genomic regions have been evolutionary selected to play a pivotal role in several aspects of cell ...
Irene Alessandrini   +3 more
semanticscholar   +1 more source

Theoretical Assessment of the Ligand/Metal/Quadruplex Recognition in the Non-Canonical Nucleic Acids Structures

open access: yesMolecules, 2023
Quadruplexes (GQs), peculiar DNA/RNA motifs concentrated in specific genomic regions, play a vital role in biological processes including telomere stability and, hence, represent promising targets for anticancer therapy. GQs are formed by folding guanine-
Nikoleta Kircheva   +5 more
doaj   +1 more source

DNA and RNA Quadruplex ligands [PDF]

open access: yesNucleic Acids Symposium Series, 2008
Guanine-rich nucleic acids can adopt unusual structures called guanine quadruplexes (G4) based on stacked guanine quartets. Both RNA and DNA backbones are compatible with G4 formation. As RNA and DNA quadruplexes may be recognized by ligands, it is important to understand the rules that govern the stability and specificity of these complexes.
De Cian, Anne   +11 more
openaire   +3 more sources

Activity of Human Apurinic/Apyrimidinic Endonuclease APE1 Toward Damaged DNA and Native RNA With Non-canonical Structures

open access: yesFrontiers in Cell and Developmental Biology, 2020
The primary role of apurinic/apyrimidinic (AP) endonuclease APE1 in human cells is the cleavage of the sugar phosphate backbone 5′ to an AP site in DNA to produce a single-strand break with a 5′-deoxyribose phosphate and 3′-hydroxyl end groups.
Anastasia T. Davletgildeeva   +4 more
doaj   +1 more source

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