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Probing DNA G-quadruplex and i-Motif Structures via a Fluorescent Nucleoside Analogue: 4-Cyanoindole-2'-Deoxyribonucleoside.
Chembiochem
January 2025
Peking University, College of Chemistry and Molecular Engineering, No. 292 Chengfu Road, Haidian District, 100871, Beijing, CHINA.
Since the building blocks of DNA are nonfluorescent, various external fluorescence reporters have been employed to investigate the structure, dynamics, and function of DNA G-quadruplexes (GQs) and i-motifs (iMs), which play an important role in gene regulation and expression. However, most of those fluorescence reporters lack the ability to provide site-specific structural information of interest. Therefore, it is necessary to develop fluorescent nucleoside analogues that can be covalently inserted into oligonucleotides, which not only serve this purpose, but minimize any potential perturbation towards the native structure of the DNA systems in question.
View Article and Find Full Text PDFBackground: Molnupiravir (MOV) is an orally bioavailable ribonucleoside with antiviral activity against all tested SARS-CoV-2 variants. We describe the demographic, clinical, and treatment characteristics of non-hospitalized Danish patients treated with MOV and their clinical outcomes following MOV initiation.
Method: Among all adults (>18 years) who received MOV between 16 December 2021 and 30 April 2022 in an outpatient setting in Denmark, we summarized their demographic and clinical characteristics at baseline and post-MOV outcomes using descriptive statistics.
Deciphering the pseudouridine nucleobase modification in human diseases: From molecular mechanisms to clinical perspectives.
Clin Transl Med
January 2025
Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, China.
RNA pseudouridylation, a dynamic and reversible post-transcriptional modification found in diverse RNA species, is crucial for various biological processes, including tRNA homeostasis, tRNA transport, translation initiation regulation, pre-mRNA splicing, enhancement of mRNA translation, and translational fidelity. Disruption of pseudouridylation impairs cellular homeostasis, contributing to pathological alterations. Recent studies have highlighted its regulatory role in human diseases, particularly in tumourigenesis.
View Article and Find Full Text PDFMethyltransferase-like 7B participates in bladder cancer via ACSL3 mA modification in a ferroptosis manner.
Biol Direct
January 2025
Department of Urology, The First Hospital of China Medical University, 155 North Nanjing Street, Heping District, Shenyang, Liaoning, China.
Background: Bladder cancer (BC) is a malignant tumor. Methyltransferase-like 7B (MEETL7B) is a methyltransferase and its role in BC has not yet been revealed.
Method: Stable METTL7B knockdown or overexpression were achieved by lentiviral transduction in SW780 and TCCSUP cell lines.
Beyond destruction: emerging roles of the E3 ubiquitin ligase Hakai.
Cell Mol Biol Lett
January 2025
Epithelial Plasticity and Metastasis Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas, Universidade da Coruña (UDC), Xubias de Arriba 84, 15006, A Coruña, Spain.
Hakai protein (CBLL1 gene) was identified as an E3 ubiquitin ligase of E-cadherin complex, inducing its ubiquitination and degradation, thus inducing epithelial-to-mesenchymal transition. Most of the knowledge about the protein was associated to its E3 ubiquitin ligase canonical role. However, important recent published research has highlighted the noncanonical role of Hakai, independent of its E3 ubiquitin ligase activity, underscoring its involvement in the N-methyladenosine (mA) writer complex and its impact on the methylation of RNA.
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