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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...

DNA Isolation

DNA Isolation

DNA from cells is required for many biotechnology and research applications, such as molecular cloning. To remove and purify DNA from cells, researchers use various methods of DNA extraction. While the specifics of different protocols may vary, some general concepts underlie the process of DNA extraction.

DNA Agarose Gel Electrophoresis

DNA Agarose Gel Electrophoresis

Agarose gel electrophoresis is a laboratory technique commonly used to separate DNA fragments by size. However, it can also be used to isolate and purify DNA fragments using a gel extraction protocol.
Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA.
In cloning experiments, both the insert and vector DNA...

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Updated: Jun 2, 2026

DNA Extraction from Paraffin Embedded Material for Genetic and Epigenetic Analyses

DNA Extraction from Paraffin Embedded Material for Genetic and Epigenetic Analyses

Published on: March 26, 2011

DNA extraction techniques for use in education.

R P Hearn¹, K E Arblaster

¹Institute of Cell and Molecular Biosciences, University of Newcastle Upon Tyne, UK. r@rhearn.com.

Biochemistry and Molecular Biology Education : a Bimonthly Publication of the International Union of Biochemistry and Molecular Biology

|May 14, 2011

Summary

This summary is machine-generated.

This study presents a simple, cost-effective DNA extraction protocol using readily available materials. The optimized method enhances DNA yield and is ideal for classroom settings, providing students with practical experience.

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Small-Scale Extraction of Caenorhabditis elegans Genomic DNA

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Area of Science:

Molecular Biology
Biotechnology Education

Background:

DNA extraction is a fundamental technique for biological studies.
Hands-on DNA extraction enhances student engagement and practical understanding.
Existing protocols may be costly or complex for educational settings.

Purpose of the Study:

To develop a cost-effective, simple, and reliable DNA extraction protocol.
To optimize each stage of DNA extraction for maximum yield and quality.
To validate the protocol in a classroom setting for student use.

Main Methods:

Utilized buccal mucosal epithelial cells for non-invasive sample collection.
Optimized cell harvest, lysis (TE + 1% SDS), protein digestion (Proteinase K), and precipitation (NaCl, ethanol).
Adapted a fast-boiling protocol for specific stages and validated using Lucozade Hydro Active Fitness Water (HAFW).

Main Results:

The optimized protocol demonstrated increased DNA yield.
Achieved lower per capita cost compared to other methods.
Protocol proved user-friendly, reliable, and time-efficient in a student setting.

Conclusions:

A simple, cost-effective DNA extraction protocol was successfully developed and validated.
The protocol is suitable for educational purposes, offering practical experience and high DNA yield.
This method provides an accessible way to introduce students to DNA extraction and analysis.