Bifidobacterium breve UCC2003 was grown in modified de Man, Rogosa and Sharpe (mMRS) medium (De Man, J. C., A. Rogosa & M. E. Sharpe, (1960) A medium for the cultivation of lactobacilli. J. Appl. Bacteriol. 23: 130-135), made from first principles, supplemented with 0.05% (w/v) L-cysteine-HCl (Sigma-Aldrich, Steinhein, Germany) and 1% (w/v) of Lactose, LNT, LNnT, LNB Lactosamine HCl or Ribose as the sole carbon source. Strain was grown under anaerobic conditions in a Modular Atmosphere Controlled System (Davidson & Hardy Ltd., Dublin, Ireland) untill OD600 was 0.5. Method for cell disruption was performed as described previously (van Hijum, S. A. F. T., J. A. De, R. J. Baerends, H. A. Karsens, N. E. Kramer, R. Larsen, C. D. den Hengst, C. J. Albers, J. Kok & O. P. Kuipers, (2005) A generally applicable validation scheme for the assessment of factors involved in reproducibility and quality of DNA-microarray data. BMC.Genomics 6: 77).
Extracted molecule
total RNA
Extraction protocol
RNA isolation, RNA quality control and complementary DNA synthesis was performed as described previously (van Hijum, S. A. F. T., J. A. De, R. J. Baerends, H. A. Karsens, N. E. Kramer, R. Larsen, C. D. den Hengst, C. J. Albers, J. Kok & O. P. Kuipers, (2005) A generally applicable validation scheme for the assessment of factors involved in reproducibility and quality of DNA-microarray data. BMC.Genomics 6: 77).
Label
cy3
Label protocol
Labelling was performed as described previously (van Hijum, S. A. F. T., J. A. De, R. J. Baerends, H. A. Karsens, N. E. Kramer, R. Larsen, C. D. den Hengst, C. J. Albers, J. Kok & O. P. Kuipers, (2005) A generally applicable validation scheme for the assessment of factors involved in reproducibility and quality of DNA-microarray data. BMC.Genomics 6: 77).
Bifidobacterium breve UCC2003 was grown in modified de Man, Rogosa and Sharpe (mMRS) medium (De Man, J. C., A. Rogosa & M. E. Sharpe, (1960) A medium for the cultivation of lactobacilli. J. Appl. Bacteriol. 23: 130-135), made from first principles, supplemented with 0.05% (w/v) L-cysteine-HCl (Sigma-Aldrich, Steinhein, Germany) and 1% (w/v) of Lactose, LNT, LNnT, LNB Lactosamine HCl or Ribose as the sole carbon source. Strain was grown under anaerobic conditions in a Modular Atmosphere Controlled System (Davidson & Hardy Ltd., Dublin, Ireland) untill OD600 was 0.5. Method for cell disruption was performed as described previously (van Hijum, S. A. F. T., J. A. De, R. J. Baerends, H. A. Karsens, N. E. Kramer, R. Larsen, C. D. den Hengst, C. J. Albers, J. Kok & O. P. Kuipers, (2005) A generally applicable validation scheme for the assessment of factors involved in reproducibility and quality of DNA-microarray data. BMC.Genomics 6: 77).
Extracted molecule
total RNA
Extraction protocol
RNA isolation, RNA quality control and complementary DNA synthesis was performed as described previously (van Hijum, S. A. F. T., J. A. De, R. J. Baerends, H. A. Karsens, N. E. Kramer, R. Larsen, C. D. den Hengst, C. J. Albers, J. Kok & O. P. Kuipers, (2005) A generally applicable validation scheme for the assessment of factors involved in reproducibility and quality of DNA-microarray data. BMC.Genomics 6: 77).
Label
cy5
Label protocol
Labelling was performed as described previously (van Hijum, S. A. F. T., J. A. De, R. J. Baerends, H. A. Karsens, N. E. Kramer, R. Larsen, C. D. den Hengst, C. J. Albers, J. Kok & O. P. Kuipers, (2005) A generally applicable validation scheme for the assessment of factors involved in reproducibility and quality of DNA-microarray data. BMC.Genomics 6: 77).
Hybridization protocol
Labelled cDNA was hybridized using the Agilent Gene Expression hybridization kit (part number 5188-5242) as described in the Agilent Two-Color Microarray-Based Gene Expression Analysis v4.0 manual (G4140-90050).
Scan protocol
Following hybridization, all microarrays were washed in accordance with Agilent’s standard procedures and scanned using an Agilent DNA microarray scanner (model G2565A).
Description
Biological replicate 1
Data processing
Generated scans were converted to data files with Agilent's Feature Extraction software (Version 9.5). DNA-microarray data were processed as previously described (Garcia De La Nava, J., D. F. Santaella, J. C. Alba, J. M. Carazo, O. Trelles & A. Pascual-Montano, (2003) Engene: the processing and exploratory analysis of gene expression data. Bioinformatics 19: 657-658., van Hijum, S. A. F. T., J. Garcia De La Nava, O. Trelles, J. Kok & O. P. Kuipers, (2003) MicroPreP: a cDNA microarray data pre-processing framework. Appl. Bioinformatics. 2: 241-244., van Hijum, S. A. F. T., J. A. De, R. J. Baerends, H. A. Karsens, N. E. Kramer, R. Larsen, C. D. den Hengst, C. J. Albers, J. Kok & O. P. Kuipers, (2005) A generally applicable validation scheme for the assessment of factors involved in reproducibility and quality of DNA-microarray data. BMC.Genomics 6: 77). Data were Lowess normalized. The VALUE column contains normalized log10 LNT or LNnT or LNB or lactosamine HCl or lactose/ribose ratios from a single array experiment.
