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Updated: Aug 9, 2025

Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing

Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing

Published on: July 28, 2017

Mitochondrial DNA Enrichment for Sensitive Next-Generation Sequencing.

Shilan Wu¹, Matthew J Longley¹, Scott A Lujan²

¹Genome Integrity and Structural Biology Laboratory, Mitochondrial DNA Replication Group, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA.

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

|February 22, 2023

Summary

This summary is machine-generated.

We developed LostArc, a new DNA sequencing method to detect rare mitochondrial DNA (mtDNA) deletions in small samples. This cost-effective approach enhances the study of mitochondrial diseases and aging.

Keywords:

DNA deletions Mitochondrial DNA Mitochondrial DNA Replication Mitochondrial disease Next-Generation Sequencing POLG

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Area of Science:

Genomics
Molecular Biology
Biochemistry

Background:

Mitochondrial DNA (mtDNA) mutations and deletions accumulate with age and are implicated in mitochondrial diseases.
Improper maintenance of mtDNA leads to progressive loss of cellular respiration and mitochondrial dysfunction.
Understanding the mechanisms of mtDNA deletion formation and propagation is crucial for disease research.

Purpose of the Study:

To develop a sensitive and cost-effective next-generation DNA sequencing pipeline for detecting rare mtDNA deletions.
To investigate the molecular mechanisms underlying the creation and propagation of mtDNA deletions.
To enable high-depth sequencing of mtDNA from small tissue samples.

Main Methods:

Developed the LostArc sequencing pipeline, which minimizes PCR amplification of mtDNA.
Enriched mtDNA by selective enzymatic destruction of nuclear DNA.
Prepared libraries for unbiased next-generation sequencing of mtDNA, achieving high sensitivity.

Main Results:

The LostArc pipeline can detect one mtDNA deletion per million mtDNA circles.
Demonstrated cost-effective, high-depth sequencing of mtDNA.
Provided detailed protocols for DNA isolation, mtDNA enrichment, and library preparation.

Conclusions:

LostArc is a sensitive tool for detecting and quantifying rare mtDNA deletions in small samples.
This method facilitates research into the molecular basis of mitochondrial diseases and aging.
The detailed protocols enable wider application of this technique in biological research.