Multilocus sequence typing (MLST): markers for the traceability of pathogenic Leptospira strains

Area of Science:

• Microbiology
• Genetics
• Epidemiology

Background:

• Leptospirosis is a significant global zoonotic disease.
• Traditional serological typing methods for Leptospira are laborious and time-consuming.
• Genotyping provides valuable insights into Leptospira's genetic diversity, virulence, and molecular epidemiology.

Purpose of the Study:

• To describe practical methodologies for two major multilocus sequence typing (MLST) approaches for Leptospira.
• To facilitate accurate typing and identification of pathogenic Leptospira species and strains.
• To enhance the study of host-pathogen interactions and population dynamics in Leptospira.

Main Methods:

• Detailed description of the 6L scheme using six concatenated gene loci for phylogenetic genotyping.
• Explanation of the 7L scheme employing seven housekeeping gene loci for analyzing major pathogenic Leptospira species.
• Introduction to a web-based platform for the 7L scheme, including sequence type (ST) analysis.

Main Results:

• The 6L scheme is effective for typing pathogenic and intermediate Leptospira species.
• The 7L scheme enables the analysis of seven major pathogenic Leptospira species.
• The 7L scheme offers a user-friendly, web-based approach with ST analysis capabilities.

Conclusions:

• MLST presents a robust and efficient alternative to conventional serological typing for Leptospira.
• The described 6L and 7L schemes provide standardized tools for molecular epidemiological studies of Leptospirosis.
• These genotyping methods contribute to a deeper understanding of Leptospira's genetic structure and transmission dynamics.