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Sample GSM357375 Query DataSets for GSM357375
Status Public on Apr 01, 2009
Title NPYR biological replicate 4
Sample type RNA
 
Channel 1
Source name NPYR 100mM 24h
Organism Homo sapiens
Characteristics Caco-2 (Human colonic adenocarcinoma cells)
Treatment protocol Caco-2 cells were treated for 24 hours with one of the following six NOC: MNNG (1μM), MNU (1mM), NDEA (50mM), NDMA (100mM), NPIP (40mM) and NPYR (100mM)
Growth protocol Caco-2 cell cultures were transferred weekly by trypsinization and incubated at 37 ºC in a humidified incubator containing 5% CO2
Extracted molecule total RNA
Extraction protocol RNA was isolated from TRIzol® suspended cells according to the manufacturer’s protocol with minor modifications, followed by a clean up, using an RNeasy Mini Kit (Qiagen, Venlo, The Netherlands) with DNase treatment.
Label Cy3
Label protocol The Two-Color Microarray-Based Gene Expression Analysis kit from Agilent Technologies (Amstelveen, The Netherlands) was used to generate Cyanine (Cy) labelled cRNA according to the manufacturer’s protocol.
 
Channel 2
Source name Control for NPYR 24h
Organism Homo sapiens
Characteristics Caco-2 (Human colonic adenocarcinoma cells)
Treatment protocol Caco-2 cells were treated for 24 hours with one of the following six NOC: MNNG (1μM), MNU (1mM), NDEA (50mM), NDMA (100mM), NPIP (40mM) and NPYR (100mM)
Growth protocol Caco-2 cell cultures were transferred weekly by trypsinization and incubated at 37 ºC in a humidified incubator containing 5% CO2
Extracted molecule total RNA
Extraction protocol RNA was isolated from TRIzol® suspended cells according to the manufacturer’s protocol with minor modifications, followed by a clean up, using an RNeasy Mini Kit (Qiagen, Venlo, The Netherlands) with DNase treatment.
Label Cy5
Label protocol The Two-Color Microarray-Based Gene Expression Analysis kit from Agilent Technologies (Amstelveen, The Netherlands) was used to generate Cyanine (Cy) labelled cRNA according to the manufacturer’s protocol.
 
 
Hybridization protocol Hybridization according to Agilent instructions.
Scan protocol Slides were scanned on a GenePix® 4000B Microarray Scanner (Molecular Devices, Sunnyvale, USA). Cy3 and Cy5 were excited at wavelengths of 532 and 635 nm, respectively. Laser power was set to 100%. The photo multiplier tube gain was set to a saturation tolerance of 0.02% to minimize background and saturated spots. Photomultiplier gain was set to 587 (Cy3) and 705 (Cy5) for replicates 1 and 2, and 628 (Cy3) and 560 (Cy5) for replicates 3 and 4, based on automatic establishment of ideal scan settings. The images obtained (resolution 5 micron, 16 bit tiff image) were processed with Imagene 8.0.1 software (Biodiscovery, El Segundo, USA) to measure mean signal intensities for spots and local backgrounds followed by a quality control in Microsoft Excel.
Description Biological replicate 4 of 4
Data processing Data preparations were performed in GeneSight software (BioDiscovery) and included in chronological order: background subtraction, omission of bad spots (controls and irregularly shaped spots), LOWESS normalization, log (base=2) transformations, calculation of difference of test compound versus respective vehicle control.
 
Submission date Jan 05, 2009
Last update date Jan 05, 2009
Contact name Dennie Hebels
E-mail(s) d.hebels@maastrichtuniversity.nl
Phone 0031-43-3881088
Fax 0031-43-3884146
URL http://www.grat.nl
Organization name Maastricht University
Department Health Risk Analysis and Toxicology
Street address Universiteitssingel 50
City Maastricht
ZIP/Postal code 6200MD
Country Netherlands
 
Platform ID GPL6480
Series (1)
GSE14284 Molecular signatures of N-nitroso compounds in Caco-2 cells: implications for colon carcinogenesis

Data table header descriptions
ID_REF
VALUE Background corrected, LOWESS normalized log2 ratio (test compound/control)

Data table
ID_REF VALUE
A_23_P100001 -1.2168
A_23_P100011 0.7886
A_23_P100022
A_23_P100056 -0.2426
A_23_P100074 -0.8156
A_23_P100092 1.2289
A_23_P100103 0.1993
A_23_P100111 0.5545
A_23_P100127 0.6073
A_23_P100133 1.2978
A_23_P100141 -0.6344
A_23_P100156 -1.3678
A_23_P100177 0.7997
A_23_P100189
A_23_P100196 0.1445
A_23_P100203 -0.3361
A_23_P100220 -2.3748
A_23_P100240 -1.2502
A_23_P10025
A_23_P100263 -0.0747

Total number of rows: 41000

Table truncated, full table size 739 Kbytes.




Supplementary file Size Download File type/resource
GSM357375_Cy3.txt.gz 4.2 Mb (ftp)(http) TXT
GSM357375_Cy5.txt.gz 4.2 Mb (ftp)(http) TXT
Processed data included within Sample table

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