DNA Barcoding Supports Mitochondrial Lineage Structure in the Genus Macaca With Implications for Biomedical Research...

Area of Science:

• Primatology
• Genetics
• Biomedical Research

Background:

• Cynomolgus macaques are vital models in biomedical research.
• Hybridization between M. f. fascicularis and M. f. aurea, and introgression from M. mulatta, can impact research findings.

Purpose of the Study:

• To investigate the genetic relationships among cynomolgus macaque subspecies and M. mulatta.
• To assess the utility of DNA barcoding for differentiating these taxa and managing laboratory populations.

Main Methods:

• DNA barcoding of the COI mtDNA gene.
• Phylogenetic, pairwise distance, and statistical analyses.
• Sequencing of new and public DNA barcodes from 17 Macaca taxa.

Main Results:

• DNA barcoding successfully delineated Macaca taxa, revealing significant genetic distinctions.
• Genetic differences between M. f. fascicularis and M. f. aurea were greater than between M. f. fascicularis and M. mulatta.
• Geographical populations were also delineated, highlighting the need for individual verification and genetic management.

Conclusions:

• DNA barcoding is a rapid and cost-effective method for verifying laboratory macaques.
• Ensuring appropriate genetic selection and management of macaques is essential for reproducible research outcomes.
• Genetic variations can influence disease susceptibility and drug trial results in macaque models.