Results 101 to 110 of about 149,829 (255)

Introduction of a Double‐Headed Nucleotide Into G‐Quadruplex DNA: Position‐Dependent Stabilization and Structural Insights

Chemistry – A European Journal, EarlyView.
A double‐headed bis‐guanine (G) nucleotide (GG) was evaluated as a noncanonical building block in G‐quadruplexes (G4s). Biophysical and computational analyses reveal that GG can directly participate in G‐tetrads and strongly stabilize G4s in a position‐ and topology‐dependent manner. These findings establish design rules for using GG to engineer highly
Krista Urup, Peter Reinholdt, Kasper Munch Beck, Michael Petersen, Jean‐Louis Mergny, Poul Nielsen   +5 more
wiley   +1 more source

4′‐ThioRNA Substitution and Sense‐Strand Segmentation for the Design of Functional Fully Modified siRNAs Targeting SARS‐CoV‐2

Chemistry – A European Journal, EarlyView.
4′‐ThioRNA was broadly tolerated across multiple positions in SARS‐CoV‐2‐targeting siRNAs, but full 4'‐thio modification of both strands caused a reduction in RNAi activity. Sense‐strand segmentation improved RNAi and antiviral activity, particularly when the nick was located at position 10 from the 5′‐end of the sense strand, thereby unlocking the ...
Yuhei Nogi, Jun Tsukimoto, Noriko Saito‐Tarashima, Takaaki Koma, Masako Nomaguchi, Noriaki Minakawa   +5 more
wiley   +1 more source

Multivalent RNA‐Cleaving Agents on a Cubic Octameric Silsesquioxane Core

Chemistry – A European Journal, EarlyView.
RNA‐cleaving agents on a cubic octameric silsesquioxane core were synthesized and characterized. Several catalytic systems of these structures were screened using hexaribonucleotide models. The best systems were then further used to study their catalytic efficiency in cleaving a HER2 mRNA model sequence. The induced cleavage sites were also determined.
Hanni Haapsaari, Iris Tuomi, Pasi Virta
wiley   +1 more source

Nucleoside Triphosphate-Nucleoside Diphosphate Transphosphorylase (Nucleoside Diphosphokinase)

Journal of Biological Chemistry, 1973
Richard Palmieri, Robert H. Yue, Hans K. Jacobs, Lynn Maland, Lily Wu, Stephen A. Kuby   +5 more
openaire   +1 more source

Phosphonomethyl (Thio)Phosphonamidite Reagents for the Construction of Phosphonylmethyl Phosphono(Di)Thioate Mono‐ and Diesters

Chemistry – A European Journal, EarlyView.
A set of new phosphonomethyl (thio)phosphonamidite reagents is introduced to generate unprecedented pyrophosphate mimetics. The versatile P(III)‐P(V) reagents allow for the construction of various pyrophosphate isosteres, and the applicability of the chemistry is illustrated in the assembly of a diverse set of stabilized CDP‐glycerol and CDP‐ribitol ...
Pascal Balić, Roy Steneker, Gijsbert A. van der Marel, Jeroen D. C. Codée, Dmitri V. Filippov   +4 more
wiley   +1 more source

Nucleoside Triphosphate-Nucleoside Diphosphate Transphosphorylase (Nucleoside Diphosphokinase)

Journal of Biological Chemistry, 1964
Robert L. Ratliff, Robert H. Weaver, Henry A. Lardy, Stephen A. Kuby   +3 more
openaire   +1 more source

Uncatalyzed Guanosine Phosphorylation under Potentially Prebiotic Conditions

Chemistry – A European Journal, EarlyView.
Pyrophosphate acts as phosphorylating agent of guanosine under simple wet‐dry cycles without condensing agent and inorganic catalysts to afford cyclic guanosine monophosphate derivatives useful for oligomerization in prebiotic processes. ABSTRACT The phosphorylation of nucleosides and their subsequent polymerization are key issues in the study of the ...
Martina Proietti, Bruno Mattia Bizzarri, Elisa De Marchi, Alessandra Giorgi, Raffaele Saladino, Giovanna Costanzo   +5 more
wiley   +1 more source

Microbiome and Tumor Microenvironment Interactions: Advances From Ecological Niches to Precision Oncology

Cancer Nexus, EarlyView.
Tumor‐associated microbiota occupies spatially organized ecological niches and influence cancer progression by reshaping tumor‐cell signaling, metabolism, immunity, stromal remodeling, and therapeutic response. Integrating microbiome‐derived biomarkers, targeted microbial interventions, spatial multi‐omics, longitudinal monitoring, and AI may enable ...
Yiwen Zhang, Ji'an Liu, Jing Li, Xue Liu, Yang Su, Peng Luo, Yuhan Zhang, Zhengrui Li   +7 more
wiley   +1 more source

Transcriptomic Profiling of SLC and ABC Transporters in the Human Term Placenta

Clinical Pharmacology &Therapeutics, EarlyView.
Solute carriers (SLC) and ATP‐binding cassette (ABC) transporters are essential for placental solute exchange and fetal protection, yet their transcriptomic profiles in the human placenta remain poorly characterized. Although fetal sex influences placental development and function, its impact on transporter expression is unclear.
Elijah Marsh Jung, Nicholas Ieronimakis, Bothaina Mousa, Emily D. Sheikh, Sarah E. Ligon, Joshua W. Monson, Jennifer R. Damicis, Hillary J. Kinsman, Lydia E. Bettridge, Samuel L.M. Arnold, Edward J. Kelly, Jashvant D. Unadkat, Joanne Wang   +12 more
wiley   +1 more source

Evaluating Vaginal Microbiome Effects on Antiretroviral Exposure in the Female Genital Tract Using Pharmacometric and Machine Learning Approaches

Clinical Pharmacology &Therapeutics, EarlyView.
Antiretroviral pre‐exposure prophylaxis (PrEP) is less effective in women than expected, partly because drug exposure within the female genital tract is variable and may be influenced by the vaginal microbiome. We developed an integrated pharmacometrics and machine learning framework to evaluate associations between vaginal microbiome composition and ...
Diqin Yan, Lindsey B. Collins, Christopher Staley, Flavia Kiweewa Matovu, Pamala Jacobson, Melanie Nicol, Shen Cheng   +6 more
wiley   +1 more source