Treatment of human respiratory tract epithelial cells with H2O2 led to concentration-dependent DNA strand breakage that was highly-correlated with multiple chemical modifications of all four DNA bases, suggesting that damage is due to hydroxyl radical, OH. However, the major base damage occurred to adenine. Hence, conclusions made about the occurrence and the extent of oxidative DNA damage on the basis only of changes in 8-hydroxyguanine should be approached with caution.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0014-5793(95)01117-w | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Study of the interaction between alkaline phosphatase and biomacromolecule substrates.
Anal Bioanal Chem
January 2025
Gene Engineering and Biotechnology of Beijing Key Laboratory, College of Life Sciences, Beijing Normal University, Beijing, 100875, China.
Alkaline phosphatase (ALP) is a nonspecific phosphatase, and its interaction with substrates mainly depends on the recognition of phosphate groups on the substrate. Previous enzymatic research has focused mainly on the enzymatic reaction kinetics of the inorganic small molecule p-nitrophenol phosphate (pNPP) as a substrate, but its interaction with biomacromolecule substrates has not been reported. In current scientific research, ALP is often used for molecular cloning, such as removing the 5' termini of nucleic acids.
View Article and Find Full Text PDFTargeting FOXM1 condensates reduces breast tumour growth and metastasis.
Nature
January 2025
Frontiers Medical Center, Tianfu Jincheng Laboratory, Chengdu, China.
Identifying phase-separated structures remains challenging, and effective intervention methods are currently lacking. Here we screened for phase-separated proteins in breast tumour cells and identified forkhead (FKH) box protein M1 (FOXM1) as the most prominent candidate. Oncogenic FOXM1 underwent liquid-liquid phase separation (LLPS) with FKH consensus DNA element, and compartmentalized the transcription apparatus in the nucleus, thereby sustaining chromatin accessibility and super-enhancer landscapes crucial for tumour metastatic outgrowth.
View Article and Find Full Text PDFThe first complete mitochondrial genome of Sumatran striped rabbit Nesolagus netscheri (Schlegel, 1880), and its phylogenetic relationship with other Leporidae.
Sci Rep
January 2025
Department of Biology, Faculty of Mathematics and Natural Science, University of Sriwijaya, Jalan Raya Prabumulih Km 32, Ogan Ilir, South Sumatera, 30682, Indonesia.
Nesolagus netscheri, a Sumatran striped rabbit, is one of the rarest rabbits in the Leporidae family, and its genetic information is still limited. This study provides the first mitochondrial genome and molecular systematic characterization of the Sumatran striped rabbit, Nesolagus netscheri, Indonesia's rarest rabbit. It consists of a circular double-stranded DNA of 16,709 bp.
View Article and Find Full Text PDFIntramolecular DNA Wheel Construction for Highly Sensitive Electrochemical Detection of miRNA.
Nano Lett
January 2025
Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China.
Accurate and reliable quantification of disease-related biomolecules is essential for clinical diagnosis. In this study, a novel electrochemical approach is developed based on a target triggered DNA nanostructural switch from a hairpin dimer to a double-stranded wheel. During the process, electrochemical species get closer to the electrode interface, and the multiple intramolecular strand displacements are beneficial to low abundant target analysis.
View Article and Find Full Text PDFOngoing chromothripsis underpins osteosarcoma genome complexity and clonal evolution.
Cell
January 2025
European Molecular Biology Laboratory, European Bioinformatics Institute, Hinxton CB10 1SA, UK. Electronic address:
Osteosarcoma is the most common primary cancer of the bone, with a peak incidence in children and young adults. Using multi-region whole-genome sequencing, we find that chromothripsis is an ongoing mutational process, occurring subclonally in 74% of osteosarcomas. Chromothripsis generates highly unstable derivative chromosomes, the ongoing evolution of which drives the acquisition of oncogenic mutations, clonal diversification, and intra-tumor heterogeneity across diverse sarcomas and carcinomas.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!