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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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Related Experiment Video

Updated: Mar 18, 2026

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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A Microbiome DNA Enrichment Method for Next-Generation Sequencing Sample Preparation.

Erbay Yigit1, George R Feehery1, Bradley W Langhorst1

  • 1New England Biolabs, Ipswich, Massachusetts.

Current Protocols in Molecular Biology
|July 2, 2016
PubMed
Summary

This study presents a novel method to enrich microbial DNA by selectively removing host DNA. This improves sequencing depth and reduces costs for microbiome analysis.

Keywords:
DNA sequencingNGGmetagenomics DNA enrichmentmethylationmicrobiomenext-generation sequencingtarget enrichment

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Area of Science:

  • Microbiology
  • Genomics
  • Bioinformatics

Background:

  • Microbiome analysis is crucial for understanding microbial communities.
  • Host DNA contamination in samples is a significant challenge.
  • Removing host DNA enhances sequencing depth for microbial targets.

Purpose of the Study:

  • To describe a novel method for microbial DNA enrichment.
  • To selectively remove methylated host DNA from samples.
  • To improve the efficiency and reduce the cost of microbiome sequencing.

Main Methods:

  • Selective binding and separation of methylated host DNA.
  • Utilizing a novel enrichment technique before next-generation sequencing (NGS) library construction.
  • Application to samples containing human genomic DNA.

Main Results:

  • Achieved a higher fraction of microbial sequencing reads.
  • Observed improved read quality in sequencing data.
  • Demonstrated a reduction in downstream data generation and analysis costs.

Conclusions:

  • The described method effectively enriches microbial DNA.
  • This technique enhances microbiome analysis by reducing host DNA interference.
  • The approach offers a cost-effective solution for microbiome research.