Unknown,Transcriptomics,Genomics,Proteomics

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Simultaneous quantification of multiple bacteria by the BactoChip microarray designed to target species-specific marker genes

ABSTRACT: We have designed and experimentally validated the BactoChip, a 60-mer oligonucleotide microarray for simultaneous detection and quantification of multiple bacterial species of clinical interest. The Bactochip microarray targets a novel set of high-resolution marker genes, those genes that most unequivocally characterized each bacterial species. The accuracy of the BactoChip microarray was evaluated using the labeled total DNA of single bacterial species at different concentrations (from 65ng to more than 250ng). The specificity of the developed array was further validated using mixed cultures containing up to 15 different bacterial species in even or staggered amount. We employed the Agilent 'Custom HD-CGH 8x15k Array" (catalogue number: G4427A) and the Agilent'Genomic DNA ULS labeling Kit" (catalogue number: 5190-0419). The microarray successfully distinguished among bacterial species from 21 different genera. The BactoChip additionally proved accurate in determining species-level relative abundances over a 10-fold dynamic range in complex bacterial communities. In combination with the continually increasing number of sequenced bacterial genomes, future iterations of the technology could enable to highly accurate clinically-oriented tools for rapid assessment of bacterial community composition and relative abundances.

ORGANISM(S): Corynebacterium jeikeium

SUBMITTER: Nicola Segata

PROVIDER: E-MEXP-3420 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Simultaneous quantification of multiple bacteria by the BactoChip microarray designed to target species-specific marker genes

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