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Related Concept Videos

DNA Isolation01:24

DNA Isolation

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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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DNA Agarose Gel Electrophoresis02:35

DNA Agarose Gel Electrophoresis

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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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Related Experiment Video

Updated: Jul 5, 2025

Membrane-SPINE: A Biochemical Tool to Identify Protein-protein Interactions of Membrane Proteins In Vivo
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RNA Extraction from Gram-Positive Bacteria Membrane Vesicles Using a Polymer-Based Precipitation Method.

Paul Briaud1, Ronan K Carroll2,3,4

  • 1Department of Biological Sciences, Ohio University, Athens, OH, USA. briaudpaul@ohio.edu.

Methods in Molecular Biology (Clifton, N.J.)
|January 13, 2024
PubMed
Summary

Researchers developed a polymer-based method to efficiently isolate bacterial extracellular vesicles and their RNA cargo from Staphylococcus aureus. This technique aids in understanding how these vesicles impact host cell interactions.

Keywords:
ExtractionGram-positiveMVMembrane vesicleOMVRNAStaphylococcus

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Biochemistry

Background:

  • Bacterial extracellular vesicles (EVs) are increasingly studied for their roles in host-microbe interactions.
  • EVs mediate functions like antibiotic resistance and immune modulation.
  • Efficient isolation of EVs is crucial for functional studies.

Purpose of the Study:

  • To develop a high-yield method for isolating bacterial EVs and their RNA cargo.
  • To enable further investigation into the biological functions of Staphylococcus aureus EVs.

Main Methods:

  • A novel polymer-based precipitation technique was employed.
  • Isolation was performed on the Gram-positive bacterium Staphylococcus aureus.

Main Results:

  • The method allows for high-yield isolation of extracellular vesicles.
  • RNA cargo within the vesicles can also be isolated.

Conclusions:

  • This polymer-based precipitation method provides an effective means to isolate bacterial EVs and RNA.
  • Facilitates research into the biological roles of Staphylococcus aureus EVs in host interactions.