Multiple and simultaneous detection of specific bacteria in enriched bacterial communities using a DNA microarray chip with randomly generated genomic DNA probes

Byoung Chan Kim, Ji Hyun Park, Man Bock Gu

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A DNA microarray chip for detecting the presence of specific bacterial strains was developed using random genomic probes derived from genomic DNA, i.e., without any sequence information. Thirteen bacteria from different genuses were selected as targets. For the fabrication of the random genomic probes, genomic DNA from pure cultures of each bacterium was fractionated using several pairs of restriction endonucleases. After size fractionation of the genomic DNA fragments, random genomic libraries for each bacterium were constructed. From the library, specific probes were amplified by PCR and the probes were affixed to a slide glass to fabricate the DNA microarray chip. The results from tests with pure and mixed cultures of the bacteria used in the fabrication of the chips showed specific responses and only a small portion of cross-hybridization. This DNA microarray chip was also tested to detect the presence of specific bacteria in mixed populations. In these tests, it was demonstrated that this system provided a fast and specific response to the presence of bacterial species in mixed samples, even in activated sludge samples. This indicates that any DNA microarray chip for the detection of specific bacteria can be fabricated using the same protocols as presented in this study without requiring any genus level sequence information from pure isolates.

Original languageEnglish
Pages (from-to)2311-2317
Number of pages7
JournalAnalytical Chemistry
Volume77
Issue number8
DOIs
Publication statusPublished - 2005 Apr 15

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DNA Probes
Microarrays
Bacteria
DNA
Fabrication
Genomic Library
DNA Restriction Enzymes
Fractionation
Glass

ASJC Scopus subject areas

  • Analytical Chemistry

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Multiple and simultaneous detection of specific bacteria in enriched bacterial communities using a DNA microarray chip with randomly generated genomic DNA probes. / Kim, Byoung Chan; Park, Ji Hyun; Gu, Man Bock.

In: Analytical Chemistry, Vol. 77, No. 8, 15.04.2005, p. 2311-2317.

Research output: Contribution to journalArticle

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