Cytosine Deamination Detection
Cytosine Deamination Detection - Related Videos
07:13
Detection of Modified Forms of Cytosine Using Sensitive Immunohistochemistry
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Cited by 8 •
2016
Herein we describe a sensitive immunochemical method for mapping the spatial distribution of 5mC oxidation derivatives based on the use of peroxidase-conjugated secondary antibodies and tyramide signal amplification.
04:28
Multiplex Droplet Polymerase Chain Reaction to Detect DNA Methylation in Leukocytes
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2025
This video demonstrates the multiplex droplet polymerase chain reaction technique for the simultaneous quantification of methylated DNA regions in different white blood cell populations as an early biomarker for clinical diagnosis and prognosis.
10:41
Wild-type Blocking PCR Combined with Direct Sequencing as a Highly Sensitive Method for Detection of Low-Frequency Somatic Mutations
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Cited by 5 •
2017
Wild-type blocking PCR followed by direct sequencing offers a highly sensitive method of detection for low frequency somatic mutations in a variety of sample types.
07:19
High Sensitivity 5-hydroxymethylcytosine Detection in Balb/C Brain Tissue
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Cited by 56 •
2011
The EpiMark 5-hmC and 5-mC Analysis Kit can be used to analyze and quantitate 5-methylcytosine and 5-hydroxymethylcytosine within a spe cific locus. The kit distinguishes 5-mC from 5-hmC by the addition of glucose to the hydroxyl group of 5-hmC via an enzymatic reaction utilizing β-glucosyltransferase (T4-BGT). When 5-hmC occurs In the context of CCGG, this modification converts a cleavable MspI site to a non-cleavable site.
07:16
Rapid and Efficient Spatiotemporal Monitoring of Normal and Aberrant Cytosine Methylation within Intact Zebrafish Embryos
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Cited by 3 •
2022
This paper describes a protocol for the rapid and efficient spatiotemporal monitoring of normal and aberrant cytosine methylation within intact zebrafish embryos.
FAQs
The lesion changes how the affected DNA base pairs. Uracil pairs with adenine, so replication can convert the original cytosine position into a C-to-T substitution. This relationship allows researchers to connect a chemical DNA lesion with a sequence-level outcome and helps distinguish deamination-associated mutations from other types of genetic change.
Deamination of 5-methylcytosine produces thymine directly, whereas unmodified cytosine produces uracil. That distinction matters because thymine is a normal DNA base, while uracil represents an abnormal base in DNA. Detection strategies must therefore account for whether the starting cytosine was methylated when interpreting sequence changes or chemical-treatment results.
Researchers can combine uracil-sensitive enzymes, chemical treatments, and sequencing-pattern analysis. Enzymes provide a way to recognize uracil-containing DNA, while chemical approaches can reveal differences between modified and unmodified cytosines. Sequencing extends the analysis to characteristic base substitutions, allowing lesion detection to be connected with mutation patterns across DNA.
Uracil-sensitive enzymes act as targeted indicators of the uracil produced after cytosine deamination. Their use helps distinguish DNA containing this lesion from DNA lacking it, complementing chemical and sequencing-based approaches. In a broader workflow, enzymatic evidence can support interpretation of whether observed sequence changes reflect deamination-related damage rather than an unrelated alteration.
Bisulfite-based methods use differential chemical behavior to separate methylated from unmethylated cytosines during analysis. The resulting sequence information helps researchers assess cytosine methylation while also considering deamination-related changes. This makes the approach useful when the experimental goal includes both identifying cytosine modification states and interpreting how those states affect sequence reads.
Ancient DNA studies can examine characteristic deamination-associated sequencing patterns as evidence of molecular damage. These patterns help researchers assess whether recovered DNA has the expected history of degradation rather than treating every sequence difference as a genuine biological variant. The approach therefore supports authentication and improves interpretation of damaged genetic material.
The method supports investigations of DNA damage, mutation formation, genome stability, and epigenetic regulation. It can also help examine disease-associated mutational processes by linking cytosine chemistry with recurring sequence changes. Because the analysis connects molecular lesions, methylation status, and genetic outcomes, it provides context for understanding how DNA damage can influence biological information.