|
| Status |
Public on Jul 27, 2017 |
| Title |
Slide 345107 |
| Sample type |
RNA |
| |
|
| Channel 1 |
| Source name |
∆tpxD mutant with H2O2
|
| Organism |
Streptococcus pneumoniae D39 |
| Characteristics |
strain/background: D39
genotype/variation: ∆tpxD
treatment: 1mM H2O2
|
| Treatment protocol |
With or without 1mM H2O2 for 40mins.
|
| Growth protocol |
Streptococcus pneumoniae D39∆tpxD were grown in THY medium till OD620=0.25 and then treated with 0mM and 1mM H2O2 for 40mins.
|
| Extracted molecule |
total RNA |
| Extraction protocol |
RNA was isolated and purified using the High Pure RNA isolation kit (Roche Diagnostics) as described (Kloosterman et al., 2006). Contaminating genomic DNA was removed by treatment with RNase-free DNase I (Roche Diagnostics). RNA was isolated from three replicate cultures.
|
| Label |
Cy3
|
| Label protocol |
Total RNA was incubated for 16 h at 42°C in the presence of 400 U Superscript III RNase H reverse transcriptase (Invitrogen), 0.2 mM aminoallyl dUTP (Amersham), 0.5 mM dATP, 0.5 mM dCTP, 0.5 mM dGTP, 0.3 mM dTTP, and 3.2 g random nonamers. The synthesized cDNA was then labeled by coupling either Cy3 or Cy5 to the dUTP aminoallyl reactive group (CyScribe Post-labeling kit; Amersham Biosciences) and was purified using a GFX PCR, DNA, and gel band purification kit (Amersham Biosciences).
|
| |
|
| Channel 2 |
| Source name |
∆tpxD mutant without H2O2
|
| Organism |
Streptococcus pneumoniae D39 |
| Characteristics |
strain/background: D39
genotype/variation: ∆tpxD
treatment: 0mM H2O2
|
| Treatment protocol |
With or without 1mM H2O2 for 40mins.
|
| Growth protocol |
Streptococcus pneumoniae D39∆tpxD were grown in THY medium till OD620=0.25 and then treated with 0mM and 1mM H2O2 for 40mins.
|
| Extracted molecule |
total RNA |
| Extraction protocol |
RNA was isolated and purified using the High Pure RNA isolation kit (Roche Diagnostics) as described (Kloosterman et al., 2006). Contaminating genomic DNA was removed by treatment with RNase-free DNase I (Roche Diagnostics). RNA was isolated from three replicate cultures.
|
| Label |
Cy5
|
| Label protocol |
Total RNA was incubated for 16 h at 42°C in the presence of 400 U Superscript III RNase H reverse transcriptase (Invitrogen), 0.2 mM aminoallyl dUTP (Amersham), 0.5 mM dATP, 0.5 mM dCTP, 0.5 mM dGTP, 0.3 mM dTTP, and 3.2 g random nonamers. The synthesized cDNA was then labeled by coupling either Cy3 or Cy5 to the dUTP aminoallyl reactive group (CyScribe Post-labeling kit; Amersham Biosciences) and was purified using a GFX PCR, DNA, and gel band purification kit (Amersham Biosciences).
|
| |
|
| |
| Hybridization protocol |
The protocol was performed as described in Kloosterman et al., 2006 and Shafeeq et al., 2011.
|
| Scan protocol |
Scanning was done using the GenePix 4200AL laser scanner.
|
| Data processing |
Dual-channel array images were analyzed with GenePix 6. Spots were screened visually to identify those of low quality. Slide data were processed with MicroPreP software. Prior to analysis, automatically and manually flagged spots and spots with very low background subtracted signal intensity (5% of the weakest spots [sum of Cy3 and Cy5 net signals]) were filtered out of all data sets. Net signal intensities were calculated by grid-based background subtraction. A grid-based Lowess transformation was performed for slide normalization, negative and empty values were removed, and outliers were removed by the deviation test. Expression ratios were calculated. Further analysis was performed with a Cyber-T Student T-test for paired data.
|
| |
|
| Submission date |
Jan 21, 2015 |
| Last update date |
Jul 28, 2017 |
| Contact name |
Sulman Shafeeq |
| E-mail(s) |
[email protected]
|
| Organization name |
Karolinska Institutet
|
| Department |
MTC
|
| Street address |
nobel vag 16
|
| City |
STOCKHOLM |
| ZIP/Postal code |
17177 |
| Country |
Sweden |
| |
|
| Platform ID |
GPL11484 |
| Series (2) |
| GSE65156 |
Transcriptome comparison of the Streptococcus pneumoniae D39∆tpxD treated with 1mM to 0mM H2O2 |
| GSE65157 |
TpxD is a global sensor and transcriptional regulator for pneumococcal response to H2O2, and is regulated by CodY |
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