Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Aspergillus fumigatus Af293 response to lactic acid bacteria antifungal activity

ABSTRACT: The effect of cell free supernatant from the antifungal strain Lactobacillus plantarum 16 on the growth of Aspergillus fumigatus Af293 was assessed. Transcriptome analysis of the genome was performed after ten minutes exposure to antifungal supernatant in order to determine the molecular targets involved in inhibtion.

ORGANISM(S): Aspergillus fumigatus

SUBMITTER: Sarah Crowley

PROVIDER: E-MTAB-1701 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Transcriptomic and morphological profiling of Aspergillus fumigatus Af293 in response to antifungal activity produced by Lactobacillus plantarum 16.

Crowley Sarah S Mahony Jennifer J Morrissey John P JP van Sinderen Douwe D

Microbiology (Reading, England) 20130722 Pt 10

The morphological effects of an antifungal activity produced by Lactobacillus plantarum 16, a malt-production steep water isolate, on two food-associated fungi were examined microscopically. Spore germination was completely inhibited in Aspergillus fumigatus and Rhizopus stolonifer upon treatment with concentrated cell-free supernatant (cCFS) of strain 16. Furthermore, addition of antifungal cCFS to germ tubes and hyphae halted further development compared to untreated controls. Transcriptome an ...[more]

PMID: 23876797

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Project description:We examined the antifungal activity of artemisinin against Aspergillus fumigatus (A. fumigatus), a pathogenic filamentous fungus responsible for allergic and invasive aspergillosis in humans and analyzed transcript profiles of the fungus on exposure to Artemisinin. A. fumigatus spores were cultured for 48 h and then treated with artemisinin (at MIC50 concentration) or solvent control (DMSO) for 3 h to study its transcriptomic profiles. Total RNA (7 M-BM-5g) from A. fumigatus treated with solvent control (DMSO) or artemisinin was reverse transcribed separately using fluorescein-labeled dCTP or biotin-labeled dCTP from Micromax TSA labeling kit (Cy3 or Cy5 dyes are differentially deposited to these labeled cDNAs, post-hybridization, using tyramide signal amplification (TSA) protocol). Labeled cDNAs from test and control sample were mixed in equal amount and hybridized to microarray slide(s). After hybridization, the slides were processed as per the protocol of the Micromax TSA labeling kit and scanned in both the Cy3 and the Cy5 channels with a model 4200 Axon Instruments scanner with a 10-M-BM-5m resolution. Each of the signals was converted into a resolution of 16 bits per pixel. A dye swap experiment with a biological replicate was performed to ensure the reproducibility of each gene expression pattern.TIFF images were analyzed using GenePix Pro 6.0 software. The signal intensity value of each spot was reduced by the local background level for each spot. Diagnosis and normalization of microarray data (DNMAD) program was used for print-tip loess normalization of microarray data and for merging the data from dye-swap experiments . M-values obtained from this program were converted to log ratio (test/reference) and fold modulation. Genes having less than 3 spots in 2 dye swap slides were discarded and only those having their all fold change values (from 3 or 4 replicates in 2 slides; as each target is spotted twice on the slide) within a coefficient of variation M-BM-1 0.5 were used for analysis. Gene expression ratios of M-bM-^IM-%2 (fold upregulation or downregulation) in both replicates (dye swap) were considered to be differentially expressed genes.

Dataset Information

Aspergillus fumigatus Af293 response to lactic acid bacteria antifungal activity

Publications

Transcriptomic and morphological profiling of Aspergillus fumigatus Af293 in response to antifungal activity produced by Lactobacillus plantarum 16.

Similar Datasets

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