Results 61 to 70 of about 39,529 (294)

Synapsable quadruplex-mediated fibers [PDF]

open access: yesNanoscale Research Letters, 2013
We have fabricated a DNA-based nanofiber created by self-assembly of guanine quadruplex (Hoogsteen base pairing) and double-stranded DNA (Watson-Crick base pairing). When duplexes containing a long stretch of contiguous guanines and single-stranded overhangs are incubated in potassium-containing buffer, the preformed duplexes create high molecular ...
Mendez, Miguel, Szalai, Veronika A
openaire   +2 more sources

The neural crest‐associated gene ERRFI1 is involved in melanoma progression and resistance toward targeted therapy

open access: yesMolecular Oncology, EarlyView.
ERRFI1, a neural crest (NC)‐associated gene, was upregulated in melanoma and negatively correlated with the expression of melanocytic differentiation markers and the susceptibility of melanoma cells toward BRAF inhibitors (BRAFi). Knocking down ERRFI1 significantly increased the sensitivity of melanoma cells to BRAFi.
Nina Wang   +8 more
wiley   +1 more source

Characterization of G-Quadruplexes in Enterovirus A71 Genome and Their Interaction with G-Quadruplex Ligands

open access: yesMicrobiology Spectrum, 2022
Human enteroviruses cause many diseases; however, there is no specific therapeutic drug. G-quadruplex is an atypical secondary structure formed in the guanine rich region of DNA or RNA, which can exist in the viral genome.
Lu Lv, Leiliang Zhang
doaj   +1 more source

Sequence and ionic requirements of pUG fold quadruplexes

open access: yesRNA Biology
Poly(UG) repeats or pUG RNAs can fold into a left-handed parallel quadruplex, the pUG fold. The pUG fold directs the epigenetic amplification of RNAi in Caenorhabditis elegans, and pUG sequences are abundant in eukaryotic transcriptomes.
Saeed Roschdi   +6 more
doaj   +1 more source

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

open access: yesMolecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix   +13 more
wiley   +1 more source

Elevated levels of G-quadruplex formation in human stomach and liver cancer tissues.

open access: yesPLoS ONE, 2014
Four-stranded G-quadruplex DNA secondary structures have recently been visualized in the nuclei of human cultured cells. Here, we show that BG4, a G-quadruplex-specific antibody, can be used to stain DNA G-quadruplex structures in patient-derived tissues
Giulia Biffi   +4 more
doaj   +1 more source

Interactions Between Spermine-Derivatized Tentacle Porphyrins And The Human Telomeric DNA G-Quadruplex [PDF]

open access: yes, 2018
G-rich DNA sequences have the potential to fold into non-canonical G-Quadruplex (GQ) structures implicated in aging and human diseases, notably cancers.
Chen, Jessica, , \u2717   +5 more
core   +1 more source

G-quadruplex formation of FXYD1 pre-mRNA indicates the possiblity of regulating expression of its protein product [PDF]

open access: yes, 2014
G-quadruplexes are higher-order nucleic acid structures formed of square-planar arrangements of four guanine bases held together by Hoogsteen-type hydrogen bonds. Stacks of guanine tetrads are stabilised by intercalating potassium ions. FXYD1 encodes for
Baydoun, A. R.   +2 more
core   +1 more source

Simultaneous G‐Quadruplex DNA Logic [PDF]

open access: yesChemistry – A European Journal, 2018
AbstractA fundamental principle of digital computer operation is Boolean logic, where inputs and outputs are described by binary integer voltages. Similarly, inputs and outputs may be processed on the molecular level as exemplified by synthetic circuits that exploit the programmability of DNA base‐pairing.
Antoine Bader, Scott L. Cockroft
openaire   +3 more sources

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

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