Results 41 to 50 of about 161,459 (317)

Role of Base Excision Repair Pathway in the Processing of Complex DNA Damage Generated by Oxidative Stress and Anticancer Drugs

open access: yesFrontiers in Cell and Developmental Biology, 2021
Chemical alterations in DNA induced by genotoxic factors can have a complex nature such as bulky DNA adducts, interstrand DNA cross-links (ICLs), and clustered DNA lesions (including double-strand breaks, DSB).
Yeldar Baiken   +10 more
doaj   +1 more source

Clustered DNA Damages induced by 0.5 to 30 eV Electrons [PDF]

open access: yesInternational Journal of Molecular Sciences, 2019
Low-energy electrons (LEEs) of energies ≤30 eV are generated in large quantities by ionizing radiation. These electrons can damage DNA; particularly, they can induce the more detrimental clustered lesions in cells. This type of lesions, which are responsible for a large portion of the genotoxic stress generated by ionizing radiation, is described in ...
Yi Zheng, Léon Sanche
openaire   +2 more sources

Repair of clustered abasic DNA damages

open access: yesThe FASEB Journal, 2007
Abasic clusters‐‐two or more abasic sites on opposing strands within one helical turn‐‐are induced in DNA by ionizing radiation. AP sites are recognized by AP endonucleases, which incise the DNA at the modified site and initiate further repair. Previous studies show the action of these enzymes on one or two lesions.
Brigitte Katrin Paap, Betsy M Sutherland
openaire   +1 more source

Coupling Radiation Transport and Track-Structure Simulations: Strategy Based on Analytical Formulas Representing DNA Damage Yields

open access: yesFrontiers in Physics, 2021
Existing radiation codes for biomedical applications face the challenge of dealing with largely different spatial scales, from nanometer scales governing individual energy deposits to macroscopic scales of dose distributions in organs and tissues in ...
Pavel Kundrát   +4 more
doaj   +1 more source

Genomic stability in response to high versus low linear energy transfer radiation in Arabidopsis thaliana. [PDF]

open access: yes, 2014
Low linear energy transfer (LET) gamma rays and high LET HZE (high atomic weight, high energy) particles act as powerful mutagens in both plants and animals.
Britt, Anne B   +4 more
core   +1 more source

Studying DNA Double-Strand Break Repair: An Ever-Growing Toolbox [PDF]

open access: yes, 2020
To ward off against the catastrophic consequences of persistent DNA double-strand breaks (DSBs), eukaryotic cells have developed a set of complex signaling networks that detect these DNA lesions, orchestrate cell cycle checkpoints and ultimately lead to ...
Almeida, Sérgio F. de   +3 more
core   +4 more sources

Site-specific targeting of a light activated dCas9-KillerRed fusion protein generates transient, localized regions of oxidative DNA damage.

open access: yesPLoS ONE, 2020
DNA repair requires reorganization of the local chromatin structure to facilitate access to and repair of the DNA. Studying DNA double-strand break (DSB) repair in specific chromatin domains has been aided by the use of sequence-specific endonucleases to
Nealia C M House   +3 more
doaj   +1 more source

Molecular Mechanisms of Specific Cellular DNA Damage Response and Repair Induced by the Mixed Radiation Field During Boron Neutron Capture Therapy

open access: yesFrontiers in Oncology, 2021
The impact of a mixed neutron-gamma beam on the activation of DNA damage response (DDR) proteins and non-coding RNAs (ncRNAs) is poorly understood.
Kamila Maliszewska-Olejniczak   +5 more
doaj   +1 more source

Genomic, Pathway Network, and Immunologic Features Distinguishing Squamous Carcinomas [PDF]

open access: yes, 2018
This integrated, multiplatform PanCancer Atlas study co-mapped and identified distinguishing molecular features of squamous cell carcinomas (SCCs) from five sites associated with ...
Abdel-Rahman, Mohamed H.   +784 more
core   +2 more sources

Visualization of complex DNA damage along accelerated ions tracks

open access: yesEPJ Web of Conferences, 2018
The most deleterious DNA lesions induced by ionizing radiation are clustered DNA double-strand breaks (DSB). Clustered or complex DNA damage is a combination of a few simple lesions (single-strand breaks, base damage etc.) within one or two DNA helix ...
Kulikova Elena   +5 more
doaj   +1 more source

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