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Species Typing of Trypanosomatids Using Amplicon-Based Sequencing
Cristian Canizales-Silva1, Luz Helena Patiño1, Juan David Ramírez2,3
1Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), School of Sciences and Engineering, Universidad del Rosario, Bogotá, Colombia.
Methods in Molecular Biology (Clifton, N.J.)
|November 3, 2025
Summary
This study details protocols for identifying Leishmania and Trypanosoma species using amplicon sequencing of HSP70 and 18S rRNA genes. The methods enhance pathogen detection accuracy and assess genetic diversity in trypanosomatids.
Area of Science:
- Molecular Biology
- Parasitology
- Genomics
Background:
- Amplicon-based sequencing offers high sensitivity and specificity for microorganism identification.
- Accurate identification of parasitic species like Leishmania and Trypanosoma is crucial for diagnostics.
Purpose of the Study:
- To detail amplification and sequencing protocols for HSP70 and 18S rRNA genes.
- To establish a comprehensive workflow for pathogen detection and genetic diversity assessment.
Main Methods:
- Optimization of Polymerase Chain Reaction (PCR) conditions for robust gene amplification.
- Sequencing using Oxford Nanopore Technologies for long-read, real-time data generation.
- Bioinformatics pipeline including quality control and phylogenetic analysis for data processing.
Main Results:
- Successful amplification and sequencing of target genetic markers (HSP70 and 18S rRNA).
- High-resolution taxonomic assignments achieved through long-read sequencing.
- Accurate pathogen detection and detailed assessment of genetic diversity.
Conclusions:
- The described workflow enhances accuracy in identifying Leishmania and Trypanosoma species.
- This approach facilitates in-depth analysis of genetic diversity within trypanosomatids.
- Amplicon sequencing provides a powerful tool for molecular diagnostics and microbial characterization.
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