Results 101 to 110 of about 2,038,987 (238)

Hippocampal Adult Neurogenesis Is Maintained by Neil3-Dependent Repair of Oxidative DNA Lesions in Neural Progenitor Cells

Cell Reports, 2012
Accumulation of oxidative DNA damage has been proposed as a potential cause of age-related cognitive decline. The major pathway for removal of oxidative DNA base lesions is base excision repair, which is initiated by DNA glycosylases.
Christine Elisabeth Regnell, Gunn Annette Hildrestrand, Yngve Sejersted, Tirill Medin, Olve Moldestad, Veslemøy Rolseth, Silje Zandstra Krokeide, Rajikala Suganthan, Luisa Luna, Magnar Bjørås, Linda H. Bergersen   +10 more
doaj   +1 more source

Oxidative Stress: Molecular Mechanisms, Diseases, and Therapeutic Targets

MedComm, Volume 7, Issue 2, February 2026.
Oxidative stress occurs when the reactive oxygen species (ROS) production overwhelms the ROS scavenging, which lead to genomic instability, epigenetic regulation, proteostasis imbalance, and lipid peroxidation, subsequently causing the occurrence and development of numerous diseases. ABSTRACT Although the physiological level of reactive oxygen species (
Yi Qin, Chen Qian, Wenhao Li, Qihan Wang, Qifeng Sheng, Zheqing Chen, Wei Zhang, Wenming Li, Gaoran Ge, Zhanjun Yan, Dechun Geng   +10 more
wiley   +1 more source

Structural basis for human OGG1 processing 8-oxodGuo within nucleosome core particles

Nature Communications
Base excision repair (BER) is initialized by DNA glycosylases, which recognize and flip damaged bases out of the DNA duplex into the enzymes active site, followed by cleavage of the glycosidic bond.
Mengtian Ren, Fabian Gut, Yilan Fan, Jingke Ma, Xiajing Shan, Aysenur Yikilmazsoy, Mariia Likhodeeva, Karl-Peter Hopfner, Chuanzheng Zhou   +8 more
doaj   +1 more source

5-Hydroxy-5-methylhydantoin DNA lesion, a molecular trap for DNA glycosylases

Nucleic Acids Research, 2011
DNA base-damage recognition in the base excision repair (BER) is a process operating on a wide variety of alkylated, oxidized and degraded bases. DNA glycosylases are the key enzymes which initiate the BER pathway by recognizing and excising the base ...
Y. Le Bihan, Maria Angeles Izquierdo, F. Coste, P. Aller, F. Culard, T. Gehrke, K. Essalhi, T. Carell, B. Castaing   +8 more
semanticscholar   +1 more source

A Novel Human Cellular System for Studying Normal Aging and for Anti‐Aging Discovery

Aging Cell, Volume 25, Issue 2, February 2026.
This study introduces a human cellular aging model using placental trophoblasts (hTSC‐STBs) that mimics key aging features like senescence and genomic instability. It aligns with human tissue aging and responds to anti‐aging treatments, offering a scalable platform to screen potential therapies and bridge lab findings to clinical applications ...
Zhen Feng, Cheuk Shuen Li, Haifeng Fu, Wenxin Jiang, Weiyu Zhang, Yingzhang Huang, Yunying Huang, Timothy Theodore Ka Ki Tam, Yang Li, Fang Liu, Liming Lu, Yin Lau Lee, William Shu Biu Yeung, Gordon Dougan, Pentao Liu   +14 more
wiley   +1 more source

Repair of Oxidized Bases in DNA Bubble Structures by Human DNA Glycosylases NEIL1 and NEIL2*

Journal of Biological Chemistry, 2003
Repair of oxidatively damaged bases in the genome via the base excision repair pathway is initiated with excision of these lesions by DNA glycosylases with broad substrate range.
H. Dou, S. Mitra, T. Hazra
semanticscholar   +1 more source

Uracil-DNA glycosylase. Purification and properties of uracil-DNA glycosylase from Micrococcus luteus.

Journal of Biological Chemistry, 1982
A uracil-DNA-glycosylase from Micrococcus luteus has been purified more than 3,000-fold. The enzyme preparation appears homogeneous, according to the results of sodium dodecyl sulfate-polyacrylamide gel electrophoresis. It is devoid of nonspecific endonucleases, specific endonucleases for apurinic and apyrimidinic sites, 3-methyladenine or 7 ...
J P, Leblanc, B, Martin, J, Cadet, J, Laval   +3 more
openaire   +2 more sources

Effect of prolonged voluntary wheel running on oxidative stress and defence mechanisms in cortex and hippocampus of healthy female rats

Experimental Physiology, Volume 111, Issue 2, Page 449-463, 1 February 2026.
Abstract Physical exercise promotes brain health and cognitive function possibly through mechanisms that include strengthened resistance to oxidative stress. However, limited research has explored the cumulative effects of regular voluntary exercise on both oxidative stress and defence mechanisms in hippocampus and cortex, two regions essential for ...
Camilla Myrup Holst, Iria Esperon‐Abril, Frederik Bryske Juhl, Jesper Emil Jakobsgaard, Jonas B. Kristiansen, Kristian Vissing, Tinna Stevnsner   +6 more
wiley   +1 more source

DNA damage measurements within tissue samples with Repair Assisted Damage Detection (RADD)

Current Research in Biotechnology, 2019
Exposures to genotoxic carcinogens and reactive species result in strand breaks and a spectrum of covalent modifications to DNA that can induce mutations and contribute to the initiation and progression of cancer. Measurements of DNA damage within tissue
Kevin J. Lee, Elise Mann, Luciana Madeira da Silva, Jennifer Scalici, Natalie R. Gassman   +4 more
doaj   +1 more source

Endocytic Programming via Porous Silicon Nanoparticles Enhances TLR4 Nanoagonist Potency for Macrophage‐Mediated Immunotherapy

Advanced Functional Materials, Volume 36, Issue 5, 15 January 2026.
Porous silicon nanoparticles (PSiNPs) reprogram macrophage endocytosis of manganese@albumin‐based TLR4 nanoagonists, driving TRIF‐biased TLR4 signaling, eliciting robust proinflammatory responses, and potentiating macrophage‐mediated immunotherapeutic effects against NSCLC.
Xiaomei Zhang, Huiying Li, Shuodan Huang, Linxuan Zhang, Yan Gao, Ruoran Wang, Xiaoyu Wang, Hélder A. Santos, Zhenyu Yin, Bing Xia   +9 more
wiley   +1 more source