Development of a MLST-biased SNP microarray for Candida albicans.
Timothy J Lott1, Robin T Scarborough
1National Center for Zoonotic, Vectorborne and Enteric Diseases, Division of Foodborne, Bacterial and Mycotic Diseases, Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA. tjl1@cdc.gov
Fungal Genetics and Biology : FG & B
|March 13, 2008
Summary
A new single nucleotide polymorphism (SNP) microarray for Candida albicans offers a powerful tool for tracking the pathogen. This SNP array complements multi-locus sequence typing (MLST), enhancing our understanding of C. albicans epidemiology and genetics.
Area of Science:
- Microbiology
- Genetics
- Bioinformatics
Background:
- Candida albicans is a significant human pathogen.
- Accurate typing methods are crucial for understanding its epidemiology and genetics.
- Existing methods like multi-locus sequence typing (MLST) can be supplemented for improved resolution.
Purpose of the Study:
- To develop a novel single nucleotide polymorphism (SNP) detection microarray for Candida albicans.
- To incorporate informative SNPs from both established MLST loci and additional genomic regions.
- To optimize the array design by reducing redundant polymorphisms through linkage and matched-set analyses.
Main Methods:
- Design and fabrication of a custom SNP microarray using synthetic oligonucleotides on microscope slides.
- Selection of 79 SNPs from 19 loci across all eight chromosomes of C. albicans.
- Inclusion of 57 SNPs from seven genes within the MLST consensus scheme.
- Identification of 22 additional SNPs from 12 loci distributed across the genome.
- Linkage and matched-set analyses to reduce informatively redundant mutations.
Main Results:
- Development of a comprehensive SNP microarray for C. albicans.
- The array targets 79 informative SNPs, including those relevant to MLST.
- Statistical analyses successfully reduced redundant SNP data, increasing array efficiency.
- The array design facilitates detailed genetic and epidemiological studies.
Conclusions:
- The developed SNP microarray is a valuable tool for C. albicans research.
- This array serves as an effective supplement to traditional MLST typing.
- It will enhance the study of C. albicans epidemiology and population genetics.
