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Sample GSM149631 Query DataSets for GSM149631
Status Public on Feb 11, 2007
Title 1_hypothalamus_12hrs_sleep_#18
Sample type RNA
 
Source name hypothalamus; 12 hrs of undisturbed sleep; sacrificed at 7 PM
Organism Mus musculus
Characteristics Strain: C57/BL6/J
Gender: male
Age: 10 weeks of age ±1 week
Tissue: hypothalamus
Biomaterial provider Miroslaw (Mirek) Mackiewicz, Ph.D.; University of Pennsylvania School of Medicine
Treatment protocol Mice were sacrificed at 7 PM after 12 hrs of undisturbed sleep.
Growth protocol Experiments were performed on male mice (C57/BL6/J), 10 weeks of age ±1 week. Animals were housed in a light/dark cycle of 12 hrs, in a pathogen free, temperature- and humidity-controlled room (22ºC and 45-55%, respectively) with water available ad libitum. Food was accessible for 12 hrs only during the active period. Animals were subjected to 14 days of acclimatization during which a nighttime feeding pattern was established. This was done to avoid differential food intake between mice that were subsequently sleep deprived during the lights on period and those allowed to sleep.
Extracted molecule total RNA
Extraction protocol Mice were sacrificed by cervical dislocation. Brain sectioning was performed according to the mouse brain atlas of Franklin and Paxinos, and broadly defined regions and zones of the hypothalamus were sampled. RNA was isolated with Trizol (Invitrogen) and further purified using RNeasy columns (Qiagen) as per the manufacturer’s instructions.
Label biotin/streptavidin
Label protocol Target preparation were performed as described by the Affymetrix GeneChip Expression Analysis Technical Manual (http://www.affymetrix.com), and were conducted at the University of Pennsylvania Microarray Core Facility. Briefly, 5 ug of total RNA was converted to first-strand cDNA using Superscript II reverse transcriptase primed by a poly(T) oligomer that incorporated the T7 promoter. Second-strand cDNA synthesis was followed by in vitro transcription for linear amplification of each transcript and incorporation of biotinylated CTP and UTP.
 
Hybridization protocol Hybridization and post-hybridization procedures were performed as described by the Affymetrix GeneChip Expression Analysis Technical Manual (http://www.affymetrix.com), and were conducted at the University of Pennsylvania Microarray Core Facility. The cRNA products were fragmented to 200 nucleotides or less, heated at 99ºC for 5 min and hybridized for 16 h at 45ºC. The microarrays were then washed at low (6X SSPE) and high (100mM MES, 0.1M NaCl) stringency and stained with streptavidin-phycoerythrin. Fluorescence was amplified by adding biotinylated anti-streptavidin and an additional aliquot of streptavidin-phycoerythrin stain.
Scan protocol A confocal scanner was used to collect fluorescence signal at 3um resolution after excitation at 570 nm. The average signal from two sequential scans was calculated for each microarray feature.
Description none
Data processing Affymetrix Microarray Suite 5.0 was used to quantitate expression levels for targeted genes; default values provided by Affymetrix were applied to all analysis parameters. Border pixels were removed, and the average intensity of pixels within the 75th percentile was computed for each probe. The average of the lowest 2% of probe intensities occurring in each of 16 microarray sectors was set as background and subtracted from all features in that sector. Probe pairs were scored positive or negative for detection of the targeted sequence by comparing signals from the perfect match and mismatch probe features. The number of probe pairs meeting the default discrimination threshold (tau = 0.015) was used to assign a call of absent, present or marginal for each assayed gene, and a p-value was calculated to reflect confidence in the detection call. A weighted mean of probe fluorescence (corrected for nonspecific signal by subtracting the mismatch probe value) was calculated using the One-step Tukey's Biweight Estimate. This Signal value, a relative measure of the expression level, was computed for each assayed gene. Global scaling was applied to allow comparison of gene Signals across multiple microarrays: after exclusion of the highest and lowest 2%, the average total chip Signal was calculated and used to determine what scaling factor was required to adjust the chip average to an arbitrary target of 150. All Signal values from one microarray were then multiplied by the appropriate scaling factor.
 
Submission date Dec 11, 2006
Last update date Aug 28, 2018
Contact name Miroslaw Mackiewicz
E-mail(s) mirekmm@mail.med.upenn.edu
Phone (215) 746-4805
Fax (215) 746-4814
Organization name University of Pennsylvania
Department Medicine
Lab Division of Sleep Medicine
Street address 2124 TRL 125S 31st Street
City Philadelphia
State/province PA
ZIP/Postal code 19104-3403
Country USA
 
Platform ID GPL1261
Series (1)
GSE6514 Gene expression in the mouse brain during spontaneous sleep and prolonged wakefulness
Relations
Reanalyzed by GSE119085

Data table header descriptions
ID_REF
VALUE gene expression measures MAS5 derived
ABS_CALL present or absent call based on detection p value
DETECTION P-VALUE probability values (statistical significance) associated with detection and comparison calls

Data table
ID_REF VALUE ABS_CALL DETECTION P-VALUE
AFFX-BioB-5_at 110 P 0.00141
AFFX-BioB-M_at 173.8 P 0.000109
AFFX-BioB-3_at 74.7 P 0.000446
AFFX-BioC-5_at 301.3 P 0.000169
AFFX-BioC-3_at 254.1 P 0.000044
AFFX-BioDn-5_at 338.9 P 0.000052
AFFX-BioDn-3_at 1369.7 P 0.000169
AFFX-CreX-5_at 4191.7 P 0.000052
AFFX-CreX-3_at 4497.6 P 0.000044
AFFX-DapX-5_at 157.7 P 0.000081
AFFX-DapX-M_at 334.4 P 0.00141
AFFX-DapX-3_at 315 P 0.00006
AFFX-LysX-5_at 21 P 0.00039
AFFX-LysX-M_at 64.1 M 0.058444
AFFX-LysX-3_at 87.1 P 0.000081
AFFX-PheX-5_at 30.3 M 0.050229
AFFX-PheX-M_at 29.6 P 0.020022
AFFX-PheX-3_at 40.7 P 0.033677
AFFX-ThrX-5_at 21.7 P 0.036569
AFFX-ThrX-M_at 49.6 P 0.00762

Total number of rows: 45101

Table truncated, full table size 1200 Kbytes.




Supplementary file Size Download File type/resource
GSM149631.CEL.gz 4.0 Mb (ftp)(http) CEL

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