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DNA Isolation

DNA Isolation

DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...

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Updated: May 9, 2026

DNA Methylation: Bisulphite Modification and Analysis

DNA Methylation: Bisulphite Modification and Analysis

Published on: October 21, 2011

Methylation-specific PCR.

Zhiqing Huang¹, Christopher F Bassil, Susan K Murphy

¹Division of Gynecologic Oncology, Duke University Medical Center, Durham, NC, USA.

Methods in Molecular Biology (Clifton, N.J.)

|August 6, 2013

Summary

This summary is machine-generated.

Methylation-specific PCR (MS-PCR) offers a sensitive and cost-effective method for analyzing DNA methylation patterns. This technique aids in understanding gene regulation and its role in various diseases.

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Last Updated: May 9, 2026

DNA Methylation: Bisulphite Modification and Analysis

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Published on: October 21, 2011

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Methylated DNA Immunoprecipitation

Published on: January 2, 2009

Area of Science:

Genomics
Molecular Biology
Epigenetics

Background:

DNA methylation is crucial for gene expression regulation, genomic imprinting, and X chromosome inactivation.
Aberrant DNA methylation patterns are implicated in various human diseases.
Accurate analysis of DNA methylation is essential for biological and medical research.

Purpose of the Study:

To describe the utility of Methylation-specific PCR (MS-PCR) as a tool for qualitative DNA methylation analysis.
To highlight the advantages of MS-PCR, including its sensitivity, ease of use, and cost-effectiveness.
To provide a foundational understanding of the MS-PCR methodology.

Main Methods:

Genomic DNA is modified using sodium bisulfite.
Two distinct primer sets are employed for PCR amplification: one for methylated DNA and one for unmethylated DNA.
PCR products (amplicons) are visualized via agarose gel electrophoresis and ethidium bromide staining.

Main Results:

MS-PCR allows for the detection of specific DNA methylation statuses.
The presence of amplicons of the expected size indicates the presence of methylated or unmethylated DNA in the original sample.
The assay is sensitive and capable of detecting small quantities of methylated DNA.

Conclusions:

MS-PCR is a valuable and accessible technique for qualitative DNA methylation analysis.
Its sensitivity and cost-effectiveness make it suitable for screening numerous samples.
MS-PCR facilitates the study of DNA methylation in biological processes and diseases.