Analysis of Whole Mitogenomes from Ancient Samples

Area of Science:

• Paleogenomics
• Molecular Archaeology
• Ancient DNA Analysis

Background:

• Ancient mitochondrial DNA (mtDNA) analysis is crucial for paleontology and archaeology, historically relying on short DNA fragments.
• Traditional methods using PCR and Sanger sequencing limit the scope of ancient DNA studies.
• Advancements in high-throughput sequencing and enrichment technologies have simplified the recovery of complete ancient mitochondrial genomes (mitogenomes).

Purpose of the Study:

• To present an optimized protocol for generating high-throughput sequencing libraries from ancient DNA extracts.
• To detail a method for enriching ancient mitogenomes using array-based capture.
• To improve the recovery of short DNA fragments from degraded ancient samples cost-effectively.

Main Methods:

• Building ancient DNA extracts into Illumina high-throughput sequencing libraries.
• Employing Agilent array-based capture for mitogenome enrichment.
• Incorporating protocol improvements to maximize short DNA fragment recovery.

Main Results:

• The presented protocol facilitates the recovery of full ancient mitogenomes.
• Improvements enhance the yield of short DNA fragments from ancient specimens.
• The protocol is designed for degraded samples but adaptable for other genomic applications.

Conclusions:

• The developed protocol offers a cost-effective and efficient method for ancient mitogenome recovery.
• This technique advances population dynamics and domestication studies of extinct species.
• The protocol's adaptability extends its utility to whole-genome shotgun sequencing and other genomic enrichments.