Results 51 to 60 of about 36,245 (244)

Spatially Resolved Multiomics Reveals Metabolic Remodeling and Autophagy Activation in Adamantinomatous Craniopharyngiomas

open access: yesAdvanced Science, EarlyView.
Multiomics integration analysis reveals the “cystic fluid–tumor cell” metabolic coupling that mediates active choline/ethanolamine uptake of tumor cells from cystic fluid and PC/PE synthesis pathways reprogramming that mediating autophagy pathway activation within ACP. ABSTRACT Adamantinomatous craniopharyngioma (ACP), a benign yet highly recurrent and
Dongting Chen   +9 more
wiley   +1 more source

A Straightforward Diphenylmethyl Protection Method and Deprotection of Some Pyrimidine Nucleosides

open access: yesMolecules, 2013
Benzhydryl protection of primary and secondary alcohols has been reported previously via reaction with metal alcoholates. Our aim was to find generally useful and very mild conditions for the alcoholic protection and deprotection of nucleosides with the ...
Arthur van Aerschot, Milind Saudi
doaj   +1 more source

Pan2‐Pan3 Complex‐Mediated Deadenylation Enforces mRNA Quality Control for Infection of the Rice Blast Fungus

open access: yesAdvanced Science, EarlyView.
Discovery that deadenylation, rather than transcription, acts as the rate‐limiting step for developmental timing in a plant pathogen. Evidence that P‐body integrity and mRNA decay are mechanistically coupled to rapid cellular differentiation under environmental stress. Identification of Pan2‐Pan3 as a pathogen‐specific “meta‐virulence factor” absent in
Ziwei Lv   +6 more
wiley   +1 more source

Harnessing Methyltransferase‐Guided Targeting for Sequence‐Specific Proximity Labeling of DNA

open access: yesAngewandte Chemie, EarlyView.
A novel methyltransferase‐mediated approach leveraging rationally designed S‐adenosyl‐L‐methionine (SAM) analogues was developed to achieve sequence‐specific DNA labeling but in proximity to the natural transfer site, addressing key limitations of previously established methods, including ligand instability and methylation‐sensitive labeling.
Xiong Chen   +8 more
wiley   +2 more sources

1,3-Dipolar Cycloaddition (Part I): Synthesis of 1,2,3-Triazole Derivatives in Nucleoside Chemistry [PDF]

open access: yesKemija u Industriji, 2015
Copper catalysed Huisgen 1,3-dipolar cycloaddition of azides and alkynes which leads to 1,4-disubstituted-1,2,3-triazoles is a frequently used method in synthetic organic chemistry.
Saftić D.   +3 more
doaj   +1 more source

A Programmable Nanoreactor Orchestrates Cascade of DNA Sensing to Amplify cGAS‐STING Activation for Cancer Immunotherapy

open access: yesAdvanced Science, EarlyView.
A programmable nanoreactor was engineered for precise cGAS‐STING pathway activation in cancer immunotherapy. This strategy bridges targeted tumor DNA damage with DC immunomodulation, providing a translatable platform to unlock innate and adaptive antitumor immunity.
Shuang Liang   +14 more
wiley   +1 more source

Synthesis and Biological Activity of Reversed Pyrimidine Nucleosides

open access: yesCroatica Chemica Acta, 2015
An efficient approach to reversed nucleosides which enables their synthesis in gram quantities is described. N-1′-Pyrimidine reversed nucleosides were prepared by treating of the sodium salt of pyrimidine bases with protected 5-tosyl ribose ...
Nataša Župančić   +5 more
doaj   +1 more source

Inhibition of Tyrosyl-DNA Phosphodiesterase 1 by Lipophilic Pyrimidine Nucleosides

open access: yesMolecules, 2020
Inhibition of DNA repair enzymes tyrosyl-DNA phosphodiesterase 1 and poly(ADP-ribose)polymerases 1 and 2 in the presence of pyrimidine nucleoside derivatives was studied here. New effective Tdp1 inhibitors were found in a series of nucleoside derivatives
Alexandra L. Zakharenko   +8 more
doaj   +1 more source

Elevated TRIM25 Impairs Poly (ADP‐ribose) Metabolism via PARG Degradation and Mediates Compression‐Induced Intervertebral Disc Degeneration

open access: yesAdvanced Science, EarlyView.
TRIM25 acts as a multifunctional hub driving intervertebral disc degeneration under mechanical stress. Mechanical compression significantly upregulates TRIM25 expression, establishing it as a key E3 ubiquitin ligase platform. TRIM25 targets PARG and Ku80 via distinct molecular interfaces, triggering their ubiquitination and degradation.
Zhangrong Cheng   +9 more
wiley   +1 more source

Synthesis and Antiviral Activity of a Series of 2′-C-Methyl-4′-thionucleoside Monophosphate Prodrugs

open access: yesMolecules, 2020
The NS5B RNA-dependent RNA polymerase of the hepatitis C virus (HCV) is a validated target for nucleoside antiviral drug therapy. We endeavored to synthesize and test a series of 4′-thionucleosides with a monophosphate prodrug moiety for their antiviral ...
Zackery W. Dentmon   +2 more
doaj   +1 more source

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