Microarray and transcript expression analysis of P. aeruginosa grown with or without bacterial (Exiguobacterium indicum SJ16) extracts

Differential expression of regulatory genes of reference strain P. aeruginosa PA01, involved in the quorum sensing was analyzed using Microarray. Total RNA was isolated from reference strain P. aeruginosa PA01, grown with or without bacterial extracts (1.0 mg/ml) using TRI reagent. Total RNA was quantified, and 10 µg RNA was converted to cDNA, fragmented and labelled by following GeneChip P. aeruginosa PA01 genome array user manual. Labelled cDNAs were hybridized with P. aeruginosa genome array gene chip, washed and stained. Hybridized chips were scanned, processed and analyzed using expression console and transcriptome analysis console.

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