Dna Lesion Detection
Dna Lesion Detection - Related Videos
10:59
Atomic Force Microscopy Investigations of DNA Lesion Recognition in Nucleotide Excision Repair
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Cited by 2 •
2017
Here, the study of different DNA lesion recognition approaches via single molecule AFM imaging is demonstrated with the nucleotide excision repair system as an example. The procedures of DNA and protein sample preparations and experimental as well as analytical details for the AFM experiments are described.
12:43
Advanced Confocal Microscopy Techniques to Study Protein-protein Interactions and Kinetics at DNA Lesions
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Cited by 8 •
2017
Laser microirradiation is a useful tool for studies of DNA repair in living cells. A methodological approach for the use of UVA lasers to induce various DNA lesions is shown. We have optimized a method for local microirradiation that maintains the normal cell cycle; thus, irradiated cells proceed through mitosis.
06:19
Comet Assay for DNA Damage Detection in Cells
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2025
The video demonstrates the comet assay for detecting DNA damage following exposure to harmful agents. Under alkaline conditions, the DNA unwinds and denatures, and upon electrophoresis, the undamaged and damaged DNA migrate differently in the agarose gel, forming a comet-shaped structure. The slowly migrating undamaged DNA forms the circular comet head, while the rapidly migrating damaged DNA fragments form the elongated comet tail.
08:16
Comparative Lesions Analysis Through a Targeted Sequencing Approach
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2019
This article describes a method to identify clonal and subclonal alterations among different specimens from a given patient. Although the experiments described here focus on a specific tumor type, the approach is broadly applicable to other solid tumors.
09:32
ampliPHOX Colorimetric Detection on a DNA Microarray for Influenza
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Cited by 4 •
2011
ampliPHOX colorimetric detection technology is presented as an inexpensive alternative to fluorescence detection for microarrays. Based on photopolymerization, ampliPHOX produces solid polymer spots visible to the naked eye in just a few minutes. Results are then imaged and automatically interpreted with a simple yet powerful software package.
FAQs
Damage-sensing proteins respond to specific changes in DNA, including altered bases, breaks in the DNA backbone, and distortions of the double helix. These structural or chemical differences provide recognition signals that help cells identify compromised genetic material. Distinguishing lesion types is important because it connects the initial damage signal with the cellular repair response and the preservation of genome stability.
Recognition provides the cellular starting point for responding to damaged DNA. Once altered structures are detected, repair pathways can address lesions that might otherwise interfere with genetic information or increase mutation risk. Studying this early step helps explain how cells maintain genome stability and how failures in damage sensing may contribute to persistent DNA damage.
Cellular sensing relies on proteins that recognize abnormal DNA structures inside biological systems, whereas laboratory assays measure lesion formation or repair through detectable changes in DNA structure or sequence. The two approaches answer related but different questions: protein recognition reveals how cells respond, while assays provide experimental measurements for comparing damage and repair under defined research conditions.
Researchers can use lesion measurements to characterize how radiation, reactive chemicals, or replication stress affect DNA and cellular responses. Comparing structural or sequence changes after these conditions helps reveal whether damage forms and whether repair pathways respond. This makes detection useful for connecting a specific stressor with genome injury and the biological processes that follow.
Laboratory assays can indicate whether DNA damage has formed and whether it is subsequently repaired by tracking changes in DNA structure or sequence. These measurements help distinguish the presence of lesions from the response to them. As a result, experiments can evaluate how effectively biological systems preserve genetic information after damaging conditions.
Lesion detection supports genotoxicity evaluation by showing how drugs or environmental exposures affect DNA integrity. It also contributes to cancer research because abnormal damage responses can be examined alongside genome stability and repair pathways. These findings can help characterize harmful exposures and inform investigations of targeted therapies that address cancer-related biological processes.