Dna Synthesis Detection
Dna Synthesis Detection - Related Videos
02:54
DNA Synthesis Assay: A Technique to Assess DNA Synthesis in Proliferating Cells Using Radioactive Tritiated Thymidine Incorporation
0 Views •
2023
In this video, we determine the proliferative capacity of neuronal progenitor cells by measuring the incorporation of radioactive tracer tritiated thymidine into the DNA of cells. This technique can be used to study cell proliferation after treatment with certain drugs and growth factors.
09:10
Synthesis of Indoxyl-glycosides for Detection of Glycosidase Activities
0 Views •
Cited by 4 •
2015
Indoxyl glycosides are well-established and widely used tools for enzyme screening and enzyme activity monitoring. Especially for glucose type structures previous syntheses proved to be challenging and low yielding. Our novel approach employs indoxylic acid esters as precious intermediates to yield a considerable number of indoxyl glycosides in good yields.
01:28
Inhibitors of Bacterial DNA Synthesis
0 Views •
2026
Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...
08:14
Kinetics of Lagging-strand DNA Synthesis In Vitro by the Bacteriophage T7 Replication Proteins
0 Views •
Cited by 3 •
2017
We describe sensitive, gel-based discontinuous assays to examine the kinetics of lagging-strand initiation using the replication proteins of bacteriophage T7.
06:19
Comet Assay for DNA Damage Detection in Cells
0 Views •
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.
FAQs
DNA synthesis detection depends on a detectable nucleotide or nucleotide analog being available while cells produce DNA. Replication machinery incorporates that labeled building block into nascent strands, creating a signal associated with newly formed DNA rather than the preexisting genome. Researchers can then visualize labeled material or measure it quantitatively to assess replication activity in the biological sample.
The timing of the signal helps identify when genome replication occurs, while its location shows which cells or cellular regions are actively producing DNA. Examining these patterns can connect replication with cell-cycle activity and developmental processes. It also allows investigators to compare replication behavior across biological conditions rather than treating the entire sample as uniformly active.
Quantitative measurements of label incorporation provide a way to compare replication activity between conditions, including genetic or environmental stress. A stronger or weaker measured signal can indicate a change in replication rate or activity. These comparisons help investigators connect altered DNA production with responses to mutations, treatments, or other experimental conditions.
A typical workflow begins by supplying cells with a detectable nucleotide or nucleotide analog. The label is incorporated as DNA is produced, after which researchers detect it through visualization or quantitative measurement. They can then examine where and when the signal appears and compare its amount across samples to assess replication patterns.
The method can compare untreated and drug-exposed cells, different genetic backgrounds, or samples experiencing distinct environmental stresses. It can also be applied across developmental settings or cell-cycle states. Comparing label-based measurements across these groups helps identify changes in DNA replication and relate them to cellular behavior, rather than observing replication as an isolated molecular event.
By showing how replication changes under genetic or environmental stress, drug exposure, or mutation, DNA synthesis detection connects genome replication with cellular behavior. These measurements can support studies of proliferation, development, and DNA repair while also helping researchers examine how replication-related changes contribute to disease mechanisms and responses to experimental treatments.